Help will give thanks to the first to answer

Answer:

Hi, Victoria. When you are dealing with a system of equations in three variables, you want to see first if there is anyway that you can eliminate two variables in one fell swoop. Remember that for any one given equation, you can multiply both sides by the same number without making the equation untrue. Also, remember that you can add or subtract two equations.

If we add the first and second equations, we will eliminate both the x and the y.

(2x + y + z) + (2x - y - z) = (3) + (9)

Answer:

Good credit will give you a better career.

Answer:

[tex]D)~~ 5a^2 +20a -5a -5[/tex]

Step-by-step explanation:

[tex]5a^2 +20a -5a -5 = 5a^2 +15a -5[/tex]

Answer:

D

Step-by-step explanation:

5a2 is same, -5 is same and 20a - 5a is same as 15a

Answer:

$860(860×12×8×1190÷100)

81872_860

=$81012

Answer:

Step-by-step explanation:

x^2 + 3

The domain is All Real x and the range is f(x) ≥ 3.

Find its inverse:

y = x^2 + 3

x^2 = y - 3

x = √(y - 3)

So f-1(x) = √(x - 3)

The domain is x  ≥ 3  and range is f(x) ≥ 0.

The joint frequency with the most flights in the given two-way frequency table is: yellow jet, going east.

A two-way frequency table is a table that displays joint frequency of two categorical variables using rows and columns to represent each.

Looking at the two-way table given, yellow jet, going east is the cell with the most flight. So, the joint frequency with the most flights is: yellow jet, going east.

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Answer:

c

Step-by-step explanation:

Answer:

The triangles are similar.

Step-by-step explanation:

The reason for this is because they both share two pairs of angles that are the same: 40 degrees and 60 degrees. If these are equal, then that must mean the third angle for both triangles is also the same, making both triangles equal in proportion. Therefore, they must be similar.

Answer:

Yes

Step-by-step explanation:

(i) By AA similarity

(ii) By SSS similarity

Answer:

2/3

Step-by-step explanation:

cup of sugar used for 3/4 cup of flour = 1/2

cup of sugar used for 1 cup of flour = 1/2*4/3 =2/3

The area of the composite figure involving rectangle and trapezium is 810.5cm².

The area can be found by adding the area of the rectangle and trapezium. This goes thus:

Area of rectangle = Length × Width = 15 × 23 = 345cm²

Area of trapezium = 1/2(a + b)h

= 1/2(15 + 34) × 19

= 1/2 × 49 × 19

= 465.5cm²

The area will now be:

= 345cm² + 465.5cm²

= 810.5cm²

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Answer:

Answer c is the correct one

The absolute value parent function is typically denoted as f(x) = |x|.

None of the given options matches the absolute value parent function.

A function has an input and an output.

A function can be one-to-one or onto one.

It simply indicated the relationships between the input and the output.

Example:

f(x) = 2x + 1

f(1) = 2 + 1 = 3

f(2) = 2 x 2 + 1 = 4 + 1 = 5

The outputs of the functions are 3 and 5

The inputs of the function are 1 and 2.

We have,

The absolute value parent function is typically denoted as f(x) = |x|. Therefore, none of the given options matches the absolute value parent function exactly.

f(x) = [x], represents the greatest integer function, also known as the floor function, which returns the largest integer less than or equal to x.

f(x) = 1/x, is a rational function, which has a horizontal asymptote at y=0 and a vertical asymptote at x=0.

f(x) = x, is a linear function, which has a constant slope of 1.

f(x) = (x-1), is a linear function with a slope of 1, but it is shifted to the right by 1 unit.

Therefore,

The absolute value parent function is f(x) = |x|.

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Answer:

c

Step-by-step explanation:

I can do this so fast I know I am a high school

Answer:

(a)  3, 2, -3, -7, -12, -18, -25, -33 etc.

(b)  -44, -12, -4, 4, 12, 44

Step-by-step explanation:

Integer: whole numbers (including negatives)

To factor a quadratic in the form [tex]ax^2+bx+c[/tex]

Question (a)

Given quadratic:  [tex]kx^2+5x+2[/tex]

[tex]\implies a=k, b=5\: \textsf{and}\:c=2[/tex]

You don't have to do this, but it is helpful to first find the range of k.  To do this, use the discriminant [tex]b^2-4ac[/tex].

If the quadratic has 2 real roots then [tex]b^2-4ac > 0[/tex]

If the quadratic has 1 real root then [tex]b^2-4ac = 0[/tex]

Therefore, set the discriminant to ≥ 0

[tex]\implies 5^2-4(k)(2)\geq 0[/tex]

[tex]\implies 25-8k\geq 0[/tex]

[tex]\implies -8k\geq -25[/tex]

[tex]\implies 8k\leq 25[/tex]

[tex]\implies k\leq 3.125[/tex]

As k is an integer, [tex]k\leq 3[/tex]

Given quadratic:  [tex]kx^2+5x+2[/tex]

[tex]\implies ac=k \cdot 2=2k[/tex]

[tex]\implies d+e=5[/tex]

So we need to find pairs of numbers that sum to 5 and multiply to a (negative or positive) even number, since [tex]ac=2k[/tex]

2 + 3 = 5  and  2 · 3 = 6   ⇒  2k = 6 ⇒ k = 3

1 + 4 = 5  and  1 · 4 = 4  ⇒  2k = 4 ⇒ k = 2

-1 + 6 = 5  and  -1 · 6 = -6   ⇒  2k = -6 ⇒ k = -3

-2 + 7 = 5  and  -2 · 7 = -14   ⇒  2k = -14 ⇒ k = -7

-3 + 8 = 5  and  -3 · 8 = -24  ⇒  2k = -24 ⇒ k = -12

-4 + 9 = 5  and  -4 · 9 = -36  ⇒  2k = -36 ⇒ k = -18

-5 + 10 = 5  and  -5 · 10 = -50  ⇒  2k = -50 ⇒ k = -25

-6 + 11 = 5  and  -6 · 11 = -66  ⇒  2k = -66 ⇒ k = -33

etc.

Therefore, possible values of k are:

3, 2, -3, -7, -12, -18, -25, -33 etc.

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

Question (b)

Given quadratic:  [tex]9x^2+kx-5[/tex]

[tex]\implies a=9, b=k\: \textsf{and}\:c=-5[/tex]

[tex]\implies ac=9 \cdot -5=-45[/tex]

Find factors of -45:

As [tex]a+c=k[/tex]:

Therefore, all possible values of k are  -44, -12, -4, 4, 12, 44

Answer:

  25 = c

Step-by-step explanation:

You had a good start on filling in the values in the Pythagorean Theorem. The work needed to be finished.

  [tex]a^2 +b^2 = c^2\\\\20^2 +15^2=c^2\\\\400+225=c^2\\\\625=c^2\\\\\sqrt{625}=\sqrt{c^2}\\\\\boxed{25=c}[/tex]

Answer:

Top Middle in the top column, rest bottom i think

Step-by-step explanation:

She sold 3 1/4 pie in the entire day, srry if i'm wrong friend.

Answer:

A: (0,-12)

Step-by-step explanation:

This chart is really helpful!

You just have to flip the coordinates and make the x value negative.

Have a great day!

Answer:

Solution 1 : 10mL with 20% acid

Solution 2 : 30mL with x% acid

Solution 3 : 40mL with 32% acid

Step-by-step explanation:

Since solution 1 + solution 2 = solution 3, let us substitute the given values we have:

10(0.2) + 30(x) = 40(0.32)

2 + 30x = 12.8

To solve for the unknown concentration x, we subtract 2 from both sides:

2 + 30x - 2 = 12.8 - 2

30x = 10.8

Dividing both sides by 30:

30x/30 = 10.8/30

x = 0.36

Therefore the unknown solution is 36% acid.

Answer:

The first option (30c + 10(0.2) = 40(0.32)

Answer: As a result, the angle between m and n is 45 degrees.

Let's split this problem into several steps:

Let's first put it into the point-slope form:

    ⇒ Point-slope form ⇒ [tex](y-y0)=m(x-x0)[/tex]

Consider the information given:

Let's plug the numbers in:

  [tex]y - 15=-4(x+4)\\[/tex]

To put this format into slope-intercept form, we will solve for y:

 ⇒as in, move everything else to one side and y by itself on the other

    [tex]y - 15=-4(x+4)\\y-15=-4x-16\\y = -4x-16+15\\y=-4x-1[/tex]

Thus the equation of the line is --> [tex]y = -4x - 1[/tex]

Hope that helps!

Answer:

The median, which is 90%.

Step-by-step explanation:

Mean: sum of (81, 87, 93, 89, 61, 81) / 6 = 82%

Median: Middle number from lowest to highest. Between 87 and 93 so its (87+93)/2 = 90%

Mode: Number that occured most often, 81%

Answer:

t=8

Step-by-step explanation:

t=8 is your answer

If you need solution do let me know in the comments

Answer:

Probability: The fraction you would expect to see a certain event occurring in many trials.

Ex: the probability of an event (blank) happening might be 0.75. This is more known as the normalized probability.

Chance: Chance is a synonym of probability, is usually expressed as a percentage

Ex: 100%

Odds: They are the ratios of probabilities, they can be defined in two different ways: odds in favor of an event (“odds on”) or against an event  (“odds against").

Ex: let's just say if the probability of an event occurring is 0.75, then the odds for it happening are 0.75/0.25 = 3/1 = 3 to 1 while the probability that it doesn’t occur is 1 to 3 against.

Step-by-step explanation:

Answer:

The answer is 198cm3.

Step-by-step explanation:

Since the radius is 3 and the height is 7, use V=πr^2h

V=πr^2h=π·3^2·7=197.92034

round to the nearest whole and it gives you 198cm3

Answer:

C

Step-by-step explanation:

198 cm3

HOPE I WAS ABLE TO HELP!

Answer:

b: 12

Step-by-step explanation:

24xy3 doesnt have x3 in it

So it cant be regarded as a factor

Brainliest please

Answer:

10, 5.

Step-by-step explanation:

The differences are -10, -9, -8, -7,

so the next 2 terms are 16-6 and 10 - 5

= 10, 5

Answer:

A quadratic function whose zeros are 2 and 7 is f(x) = x^2 - 9x + 14

If the zeros of a quadratic function are a and b, the quadratic function will be given as:

f(x)  =  (x  -  a)(x  -  b)

For the function f(x) whose zeros are 2 and 7:

f(x)  =  (x  -  2)(x  -  7)

Expand the equation

f(x)= x^2 - 7x - 2x + 14

f(x) = x^2 - 9x + 14

Therefore, a quadratic function whose zeros are 2 and 7 is

f(x) = x^2 - 9x + 14

Answer:

ledsen jag vet inte din fråga väldigt ledsen vara vän med dig

Answer:

the correct answer is

option b

slant height

Step-by-step explanation:

slant height of a pyramid is defined as a distance measure along a lateral face from a base of a triangle because hypotenuse of a right angle triangle is half on the base

distance from the center of the base to the point where the slant height segment

The line AB in the pyramid is the slant height of the pyramid.

A pyramid is a three-dimensional shape. A pyramid has a polygonal base and flat triangular faces, which join at a common point called the apex.

Given is a pyramid with AB labelled at one of its face, we need to determine the name for AB,

So, here AB is the slant height.

Slant height of a pyramid is defined as a distance measure along a lateral face from a base of a triangle because hypotenuse of a right angle triangle is half on the base distance from the center of the base to the point where the slant height segment.

Hence, the line AB in the pyramid is the slant height of the pyramid.

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