I need the answer for 9 and 10

I Need The Answer For 9 And 10

Answers

Answer 1
9.) Using elimination:

3x+6y=27

x+2y=11

The idea of elimination is to eliminate (cancel out) a variable so that only one variable exists. For example, if x is eliminated, then y is being solved, and if y is eliminated, then x is being solved. We must pick a variable in the system (x or y) and find a LCM that is the additive inverse, meaning the variables cancel out. Some example of an additive inverse: -5+5=0 and 6-6=0; it is the inverse (opposite) of addition (so subtraction) in which undoes the operation to cancel it out to zero. Likewise for subtraction to addition. So, let’s choose a variable, identify the LCM of the two same variables in both equations, and either negate or add the variables together so they cancel out to 0.

Let’s choose x:

The LCM of 3 and 1 is 3, so we only need to multiply the second equation by a factor. 1•-3=-3, so we’ll multiply the entire second equation by 3, and 3-3=0:

3x+6y=27

-3(x+2y)=-3(11)

Distribute and multiply:

-3x-6y=-33

Here is the new set:

3x+6y=27

-3x-6y=11

Now, simply add or subtract the two equations:

(3x-3x)+(6-6)=27+11

Simplify:

0+0=38

0=38

This is a false statement, and thus the system does not have any solutions, meaning the lines are parallel.

So, the answer is: No Solutions


Related Questions

Determine the perimeter of the right triangle shown.

24 units
10 units
8 units
6 units

Answers

Answer:

A)  24 units

----------------------------------

Find the legs first:

5 - (-3) = 8 units,4 - (-2) = 6 units.

Find the hypotenuse using Pythagorean:

[tex]\sqrt{8^2+6^2} =\sqrt{64+36} =\sqrt{100} =10\ units[/tex]

Find the perimeter:

P = 8 + 6 + 10 = 24 units

Correct choice is A.

Answer:

A)  24 units

Step-by-step explanation:

The perimeter of a triangle is the sum of its side lengths.

From inspection of the given right triangle:

Base = 8 unitsHeight = 6 units

As the given triangle is a right triangle, we can use Pythagoras Theorem to calculate the length of the hypotenuse:

[tex]\implies c^2=a^2+b^2[/tex]

[tex]\implies c^2=8^2+6^2[/tex]

[tex]\implies c^2=64+36[/tex]

[tex]\implies c^2=100[/tex]

[tex]\implies c=\sqrt{100}[/tex]

[tex]\implies c=10[/tex]

Therefore, the perimeter of the given triangle is:

[tex]\implies 8+6+10=24 \; \rm units[/tex]

Math Kangaroo Brazil 2020 Grade 7-8 Question. Please Solve both question 25 and 26

Answers

According to the information, Jonas realized that the four-digit sequence showing the distance traveled was the same sequence showing the time at 22h10min (question 25). Also, Lady Josephine removed 1/2 of impurities of the package of beans (question 26).

How to calculate at what time Jonas realized the sequences of distance, and time were the same (Question 25)?

To calculate at what time Jonas realized the sequences of distance and time were the same we have to perform the following mathematics operation:

21h00min - 22h10min = 1h10min = 70 min1 min = 0.016h70 min = 1.16h1.16h + 21h = 22.1h = 22h10min

How to calculate what fraction of the total amount of impurities was removed from the package (question 26)?

To calculate what fraction of the total amount of impurities was removed from package we have to perform the following mathematical operation:

Total impurities in package: 8%Impurities removed from the package: 4%

8 / 2 = 4

According to the above, we can infer that 4% of impurities equals 50% or 1/2 of the total impurities in the package.

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Please answer correctly. I will give brainliest.
A packing operator can assemble 4 cardboard boxes in 5 minutes. At this rate, how many boxes can she assemble in 25 minutes?
A.
12
B.
24
C.
20
D.
28

Answers

Answer:

C=20

Step-by-step explanation:

1. 25÷5=5

2. 5×4=20

I hope this helped☺

help me please with this​

Answers

Answer:

a) (0,-2)

b) [tex]\frac{1-(-2)}{3-0}[/tex]= 1

c) -3  or 9

Step-by-step explanation:

What is the area of the triangle?

A triangle with a base of 45 inches, height of 33 inches, and side length of 45 inches.
123 inches squared
742.5 inches squared
1,012.5 inches squared
1,485 inches squared

Answers

742.5 inches squared
First multiply 45 x 33 (BxH) then divide by 2

Answer:

742.5 inches squared

Step-by-step explanation:

What is the area of the triangle?

A triangle with a base of 45 inches, height of 33 inches, and side length of 45 inches.

123 inches squared

742.5 inches squared

1,012.5 inches squared

1,485 inches squared

you want to make five-letter codes that use the letters A, F, E, R, and M without repeating any letter. What is the probability that a randomly chosen code starts with M and ends with E?
A. 0.01
B. 0.02
C. 0.05
D. 0.10

Answers

Answer:

its C. 0.05 #edmentumgang

Step-by-step explanation:

Answer:

Option C is the correct anwer for plato

Step-by-step explanation:

C.  0.05

which points are separated by 3 units?

Answers

2,4 & 2,7 since 6,3 & 6,1 is only separated by two units :)

-2(t+7)=-4t+12 what is the value of t

Answers

9514 1404 393

Answer:

  13

Step-by-step explanation:

  -2(t +7) = -4t +12

  t +7 = 2t -6 . . . . . . . divide by -2

  13 = t . . . . . . . . . . . . add 6-t

The diameter of a circle measures 18yd . What is the circumference of the circle? Use3.14 for pie , and do not round your answer. Be sure to include the correct unit in your answer.

Answers

Solution

Given ,

The diameter of a circle measures 18yd

To Find : The Circumference of a circle

Radius can be the determined by the formula

[tex]r = \frac{d}{2} \\r = \frac{18}{2} \\r = 9yd[/tex]

Now we can apply the formula of the circumference of a circle which is,

[tex]Circumference = 2\pi r[/tex]

[tex]Circumference = 2X3.14X9[/tex]

[tex]Circumference = 56.52[/tex]

Hence , the Circumference of a circle is 56.52yd

In what quadrant does the angle 9pi/ 5 terminate?

Answers

the angle 4pi/5 in quadrent 2

9514 1404 393

Answer:

  9π/5 terminates in Quadrant IV

Step-by-step explanation:

The attached shows the terminal ray (OP) of the angle with measure 9π/5 ≈ 5.65 radians. It lies in the 4th quadrant.

if x=1−sin a and y= 1+cos a, Express y in terms of x and a only ​

Answers

Answer:

Step-by-step explanation:

Given

[tex]x=1-sin(a)\\y=1+cos(a)[/tex]

Solve for [tex]a[/tex] in the second equation.

[tex]y=1+cos(a)[/tex]

[tex]y-1=cos(a)[/tex]

[tex]a=cos^{-1}( y-1)[/tex]

Insert our answer for [tex]a[/tex] into the first equation.

[tex]x=1-sin(a)[/tex]

[tex]x=1-sin(cos^{-1}( y-1))[/tex]

[tex]cos^{-1}=arccos[/tex]

[tex]x=1-sin(arccos( y-1))[/tex]

Lets simplify [tex]1-sin(arccos( y-1))[/tex]

A piece of graph paper would be helpful in my opinion.

Here is how I would go about doing so

Draw a triangle in the plane with vertices [tex](y-1,\sqrt{1^2-(y-1)^2}),(y-1,0)[/tex] and the origin.

[tex]arccos(y-1)[/tex] is is the angle between the positive x-axis and the ray beginning at the origin and passing through [tex](y-1,\sqrt{1^2-(y-1)^2})[/tex]. Therefore [tex]sin(arccos(y-1))[/tex] is [tex]\sqrt{1-(y-1)^2}[/tex]

Now we have

[tex]x-1-\sqrt{1-(y-1)^2}\\a=arccos(y-1)[/tex]

We can write [tex]1[/tex] as [tex]1^2[/tex]. Since both terms are now perfect squares, we can factor using the difference of squares formula.

[tex]a^2-b^2=(a+b)(a-b)[/tex] where [tex]a=1[/tex] and [tex]b=y-1[/tex]

[tex]x=1-\sqrt{(1+y-1)(1-(y-1))}[/tex]

After simplifying we get

[tex]x=-\sqrt{y(-y+2)}+1[/tex]

[tex]x=-\sqrt{y(-y+2)}+1[/tex]

[tex]a=arccos(y-1)[/tex]

I think this is what your question was. If not let me know.

The union for a particular industry has determined that the standard deviation of the daily wages of its workers is $20. A random sample of 90 workers in this industry has a mean daily wage of $122. Find a 90% confidence interval for the true mean daily wage of all union workers in the industry. Then give its lower limit and upper limit. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.)

Answers

Answer:

The 90% confidence interval for the true mean daily wage of all union workers in the industry is ($118.6, $125.4). The lower limit is $118.6 and the upper limit is $125.4.

Step-by-step explanation:

We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:

[tex]\alpha = \frac{1 - 0.9}{2} = 0.05[/tex]

Now, we have to find z in the Ztable as such z has a pvalue of [tex]1 - \alpha[/tex].

That is z with a pvalue of [tex]1 - 0.05 = 0.95[/tex], so Z = 1.645.

Now, find the margin of error M as such

[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]

In which [tex]\sigma[/tex] is the standard deviation of the population and n is the size of the sample.

[tex]M = 1.645\frac{20}{\sqrt{90}} = 3.4[/tex]

The lower end of the interval is the sample mean subtracted by M. So it is 122 - 3.4 = $118.6

The upper end of the interval is the sample mean added to M. So it is 122 + 3.4 = $125.4

The 90% confidence interval for the true mean daily wage of all union workers in the industry is ($118.6, $125.4). The lower limit is $118.6 and the upper limit is $125.4.

what is m=5 n=3 mn+9

Answers

Answer = 2

Since m = 5 and n = 3, mn means multiply the values together.
5(3) = 15

Now add 9
15 + 9 = 24

Answer: 24

Step-by-step explanation:

Given that m=5 and n=3, we can plug our values into the given expression to evaluate.

(5)(3)+9                  [multiply]

15+9                        [add]

24

The reason we multiplied before we added was due to the order of operations. Order of operations tells us to always multiply or divide first before we add or subtract. In this case, the multiplication happens to come first so we multiply, then add.


Before the trip, Tyler read 24 pages of his Philadelphia guidebook in an hour. The guidebook is 84 pages long. If he continued to read it at the same
rate, how long did it take Tyler to finish reading the guidebook before his family's trip?

Equation:
Solution X:

Answers

Answer:

3.5 hours to read

Step-by-step explanation:

Before the trip, Tyler read 24 pages of his Philadelphia guidebook in an hour. The guidebook is 84 pages long. If he continued to read it at the same rate, how long did it take Tyler to finish reading the guidebook before his family's trip?

total pages / reading rate per hour

Equation: 84/24

Solution:  = 3.5 hours


PLEASE HELP 30 POINTS

Answers

the answer is yes i believe

What is the volume of a right rectangular prism that measures 4 inches
long, 3 inches wide, and 6 inches high?
A
75 inches3
B.
13
1 inches
C.
72 inches
D
81 inches 3

Answers

Answer:

It’s c, 72 inches

Step-by-step explanation:

Volume is length x width x height so it’d be
4 x 3 x 6 which equals 72

Answer:

72

Step-by-step explanation:

you multiply length x width x height and you get your answer

Find the volume of the pyramid

Answers

Hopes this helps:

Answer: 800

Please mark as brainlist if it’s right.

There are 16 ounces in 1 pound, Juan is mailing a package that weighs 96 ounces. He wants
to know the weight of the package in pounds.

Answers

Answer:

96oz = 6 pounds

Step-by-step explanation:

96 divided by 16 = 6 pounds

Assuming there are 16 ounces in 1 pound,  if he want to know the weight of the package. The weight of the package in pounds is 6 pounds.

Weight of the package in pounds

Using this formula

Weight in pounds=Weight /Ounces in 1 pound

Where:

Weight=96 ounces

Ounces in 1 pound=16 ounces

Let plug in the formula

Weight in pounds=96 ounces/16 ounces

Weight in pounds=6 pounds


Inconclusion the weight of the package in pounds is 6 pounds.

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Which graph represents the solutions to this equation?
X²+8x=-20

Answers

Answer:

The one with the vertex of (-4,4)

Step-by-step explanation:

Between 2020 and 2021, the population of a town decreased by 35%
In 2021, the population of the town was 94 900. What was the population of the town in 2020?​

Answers

Answer:

Step-by-step explanation:

if 2021 is 35% decrease of the original number then 2020 is 100% ,and 2021 = 65%.

so, we do the rule of three:

x = (94900 * 100)/ 65

x = 146000

and that is the population in 2020.

Answer:

Hey there! Based on the information provided, it seems that the population of the town decreased by 35% between 2020 and 2021. We can use this information to calculate that in 2021, the population of the town was 65% of its population in 2020. If the population of the town in 2021 was 94,900, then we can use this information to calculate that the population of the town in 2020 was 146,155. Does that make sense?

Three vertices of a rectangle are located on the coordinate plane shown below. Coordinate plane with points labeled Part A Which is the ordered pair for Point B? A. (2, 8) B. (6, 8) C. (6, 6) D. (8, 6) Part B Which point is at (8, 2)? A. A B. B C. C D. None of these Part C What are the coordinates of point A? Enter your answer in the boxes. ( , ) Part D What are the coordinates of the fourth vertex of the rectangle? Enter your answer in the boxes. ( , )
HELP!!

Answers

Answer:

Part A

Which is the ordered pair for Point B?

A. (2, 8)

 B. (6, 8)

 C. (6, 6)

 D. (8, 6)

Part B

Which point is at (8, 2)?

A. A

 B. B

 C. C

 D. None of these

Part C

What are the coordinates of point A?

Enter your answer in the boxes.

(

2

,

8

)

Part D

What are the coordinates of the fourth vertex of the rectangle?

Enter your answer in the boxes.

(

0

,

0

)Step-by-step explanation:

Which expression could be used to determine the product of –4 and 3 and one-fourth?
(negative 4) (3) times (negative 4) (one-fourth)
(negative 4) (3) + (negative 4) (one-fourth)
(3) (negative 4) times (3) (one-fourth)

Answers

The expression which could be used to determine the product of -4 and 3 and one-fourth as required is; negative 4) (3) + (negative 4) (one-fourth).

Which expression can be used to determine the product of the given word phrase?

As evident in the task content; the expression which could be used to determine the product of; -4 and 3 and one-fourth is required to be determined.

Since the given expression is; -4 and 3 and one-fourth; we have that;

-4 × 3 ¼

However, since 3 ¼ can be written as; ( 3 + ¼ ), it follows that we have;

-4 × ( 3 + ¼ )

Ultimately, the resulting expression using the distributive property is;

( -4 ) ( 3 ) + ( -4 ) ( ¼ )

Therefore, the correct answer is; (negative 4) (3) + (negative 4) (one-fourth).

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Write an equation in standard form passing through the given point and parallel to the given line: (-1,-1) y = - x - 5

A: x - y = -2
B: x + y = 0
C: x - y = 0
D: x + y = -2

Answers

Option D, x + y = -2 is the equation in standard form passing through the (-1,-1) and parallel to y = -x - 5.

What is standard form?

The process of expressing a specific element in mathematics in the most typical way is known as standard form. Every element of mathematics, including big and small numbers, equations and lines, is designated in a standard form.

A standard form is a way of expressing a certain mathematical idea, such as an equation, number, or expression, in a way that adheres to a set of rules. The standard form is used to clearly represent extremely large or extremely small numbers.

To write an equation in standard form passing through the (-1,-1) and parallel to y = - x - 5, we need to find y-intercept form first

We know that parallel lines have same slope, so

y - y1 = m(x - x1)

y -(-1) = -1(x -(-1)

y + 1 = -x - 1

y = -x - 2

y + x = -2

Thus, Option D, x + y = -2 is the equation in standard form passing through the (-1,-1) and parallel to y = -x - 5.

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Erik deposited $3,000 into a savings account that earns 5% simple Interest.

He also deposited $3,000 into a savings account that earns 5% compound interest.

How much is the difference between the account balances after 3 years?

Answers

Answer:

3450 because 5 percent of 3000 Is 150

Answer:

Hey, the answer is 15.375

Step-by-step explanation:

UsiNg PRT/100, the simple interest of the sum of 3000 naira invested for 3yrs at 5% per annum is 450.

Meanwhile, the first year of the compound interest, the interest generated was 150

second year 157.5

and lastly, third year 157.875

Total interest = 465.375

465.375 - 450 = 15.375

In this sampling method we believe there are significant differences between groups comprising the population. Here we assign the population into groups and then try to replicate those percentages present in the population in our sample. As a result we randomly select people out of each group to try and get a representative sample from each of the groups of interest. Which sampling method is this?

Answers

Answer:

Proportionate Stratified Random Sampling.

Step-by-step explanation:

Sampling is the process of selecting a small group representative of population.

Stratified Random Sampling is used when population is too heterogeneous, ie too dissimilar. This method includes dividing population into various dissimilar groups [stratas] , similar within themselves. Then, sample is taken from each strata (group), making it good representative of population variety.

If sampling structure is such that - sample units are selected from each strata, in proportion to the strata's presence in population - It is called Proportionate Stratified Random Sampling.

Eg : Dividing population in gender (men, women, other) stratas & taking sample from each strata - in proportion to particular gender in population

Graph the solution to this inequality on the number line.
The

Answers

Using a straight line and either an open circle or a closed circle to indicate the end points, we can depict inequalities on a number line by displaying the range of integers.

How do you identify inequalities?

By drawing a straight line and designating the end points with either an open circle or a closed circle, we can depict inequalities on a number line by illustrating the range of integers. An open circle indicates that it excludes the value. A closed circle indicates that it does contain the value.

Both equations and inequalities are mathematical phrases created by connecting two expressions. The equal sign (=) in an equation denotes that the two expressions are regarded as equal. In contrast, an inequality indicates that the two phrases are not always equal by using the symbols >,,, or.

With regard to the inequality expression

-3m + 5 > 14

5 from each side is subtracted.

-3m + 5 - 5 > 14 - 5

-3m > 9

Subtract -3 from both sides.

-3m/-3 < 9/-3

m < -3

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Please help in this question. I WILL mark brainliest. NO LINKS

Answers

Answer:

B, you are correct

Area of the bigger trapezoid = (6 + 2) x 1/2 x 6 = 8 x 1/2 x 6 = 4 x 6 = 24

Area of the smaller trapezoid = (4 + 2) x 1/2 x 3 = 6 x 1/2 x 3 = 3 x 3 = 9

Area of the shaded area = 24 - 9 = 15

Hope that helps! :)

Hope that helps! :)

-Aphrodite

Step-by-step explanation:

no links please
The elevator in the newest skyscraper downtown goes from the top floor down to the lowest level of the underground parking garage. If the building is 380 feet tall and the elevator descends 420 feet from top to bottom, how far underground does the parking garage go?

A.
40 feet

B.
790 feet

C.
30 feet

D.
800 feet

Answers

Answer: A 40 feet

Explanation:
If a building is 380 feet tall and the elevator has to descend 420 feet to get to the underground parking garage. So 420 - 380 to remove the height of the building from the equation. This would give us 40 feet underground left until the elevator reaches its desired destination.

‼️PLEASE HELP ASAP!!!!‼️
Select the table that represents a linear function. (Graph them if necessary.)

Answers

Answer = A
Check image below
For explanation

Which statements are true? Select three options.
and are parallel.

Answers

Answer: line AB and RS are parallel because their lines do not interact anywhere on the model, because it is 3D. this is the only one i am sure of, you may have to ask another person to get the other two.

Answer:

A. Line AB and Line CG are parallel, C. Line CG and Line RS are perpendicular, and E. Line CG lies in plane X

Step-by-step explanation:

A. Line AB and Line CG are parallel is true because the arrows are pointing in the same directions and do intersect or cross each other.

B. Line AB and Line RS are parallel is false because although they do not intersect, they also do not go in the same direction. These are also not perpendicular lines because they do not intersect other, even though they make a right angle.

C. Line CG and Line RS are perpendicular is true because these lines intersect at exactly 90° angle (as shown by the square).

D. Line AB and Line RS must intersect is false because Line AB does not intersect Line CG (which is the line that does intersect Line RS).

E. Line CG lies in plane X is true because point C and point G are in plane X.

F. Line RS lies in plane X is false because point r and point 2 are in plane Y.

Other Questions
Describe your academic and career plans and any special interests (e.g., undergraduate research, academic interests, leadership opportunities, etc.) that you are eager to pursue as an undergraduate at Indiana University. If you encountered any unusual circumstances, challenges, or obstacles in completing your education, share those experiences and how you overcame them. Which two pieces of evidence from the passage best supports the idea that Evan likes to help animals in need In contract law, intent is determined by the personal or subjective intent, or belief, of a party.true/false What forms from the union of the sperm cell and the egg cell?A.zygoteB.haploid cellC.gamete Joint education can be broadly parsed into three categories: Joint Professional Military Education (JPME), Enlisted Joint Professional Military Education (EJPME), other Joint Education. Jessie sorted the coins in her bank she made 7 stacks of 6 dimes and 8 stacks of 5 nickels. She then found 1 dime and 1 nickel. How many dimes and nickels does jessie have in all a. 84 b. 82 c. 80 d. 28 Dr. Martin gave a memory test to a group of 60-year-olds in 1990 and then to the same people again in 2000 when they were 70 years old. He found that their memory scores improved as they got older. The research design used here was: ________. Write the word sentence as an equation. Then solve the equation84 is 99 fewer than a number c. BRAINLY GRANTED FOR CORRECT ANS PLEASE HELP How does wellness affect our daily lives? what is the largest state in the us? Audrey has been having fatty stools and pains after eating, especially after eating high fat meals. Which of the following is most likely the cause What groups were omitted when the Declaration of Independence was written? If a coin is tossed 4 times, the odds of it coming up either heads every time or tails every time are 1:7.What is the probability the coin comes up all heads or all tails after 4 tosses? what were some economic reasons why anti Semitism existed throughout europe 16. A car A is moving at a speed of 6m/s due north and car B is moving at a speed of 8m/s due east. Find the magnitude and direction of the velocity of car A relative to car B How deep could U-boats go? Which of the following nursing measures has the highest priority when an intrapartum woman has a prolapsed umbilical cord *** JAVA ***Retype and correct the code provided to combine two strings separated by a space.secretID.concat(spaceChar);secretID.concat(lastName);import java.util.Scanner;public class CombiningStrings {public static void main (String [] args) {String secretID = "Barry";String lastName = "Allen";char spaceChar = ' ';/* Your solution goes here */System.out.println(secretID);return;}} A town has a population of 4000 and grows at 2% every year. To the nearest year, how long will it be until the population will reach 4500?