Answer:
THE ANSWER IS -6.246
Step-by-step explanation:
y = 2x - 3 and x = 7
Answer:
y = 11
Step-by-step explanation:
y = 2(7) - 3
y = 14 -3
y = 11
i need help with this?
Answer:
y = 3( [tex]0.5^{x}[/tex] )
Step-by-step explanation:
Exponential function has the form f(x) = k [tex]b^{x}[/tex] where b > 0 and b ≠ 1
~~~~~~
3 = k × [tex]b^{0}[/tex] ⇒ k = 3
1.5 = 3( [tex]b^{1}[/tex] ) ⇒ b = 0.5
Thus, y = 3( [tex]0.5^{x}[/tex] )
A cuboid with a volume of 924cm^3 has dimensions 4cm, (x+1)cm and (x+11)cm.
Show clearly that x^2+12x-220=0
Solve by factorisation, making sure you show the factorisation. Find the dimensions of the cuboid.
Answer:
Dimensions = 4cm, 11cm and 21cm
OR
Dimensions = 4cm, -21cm and -11cm
Step-by-step explanation:
Solving the quadratic equation by using the factorization method;
x² + 12x - 220 = 0
Factors = 22 and -10
x² + 22x - 10x - 220 = 0
x(x + 22) - 10(x + 220) = 0
(x - 10)(x + 22) = 0
Therefore, x = 10 or x = -22
Given the following data;
Length of one side = (x + 1)cm
When x = 10
Length of one side = (10 + 1)cm
Length of one side = 11cm.
When x = -22
Length of one side = (-22 + 1)cm
Length of one side = -21cm
Length of the other side = (x + 11)cm
When x = 10
Length of the other side = (10 + 11)cm
Length of the other side = 21cm
When x = -22
Length of the other side = (-22 + 11)cm
Length of the other side = -11cm
Check;
Volume of a cuboid = L*L*L
Volume of a cuboid = 4 * 11 * 21
Volume of a cuboid = 924cm³
x + y = 8
Let x = -1. What is y?
Enter the correct answer
DONE
Il?
Answer:
y = 9
Step-by-step explanation:
x + y = 8
-1 + y = 8
y - 1 = 8
Add one to both sides to isolate y.
y = 9
Have a great day!
Which expression is equivalent to
Answer:
B
Step-by-step explanation:
Yin wants to create figure Y′ that is similar to figure Y. Yin begins by reflecting figure Y across the y-axis.
Which of the following should Yin do next to get a figure similar to figure Y?
A. Yin should rotate the figure 90°.
B. Yin should dilate the figure by a scale factor of 2.
C. Yin should reflect the figure across the x-axis.
D. Yin should translate the figure 3 units to the left.
Answer: B) Dilate by scale factor of 2
====================================================
Explanation:
Your teacher isn't saying this directly, but I'm assuming s/he wants you to find a similar figure that isn't congruent to the original. Informally, your teacher seems to want you to find a figure that is the same shape but not the same size as the original.
If so, then any dilation will shrink or enlarge the image depending on the scale factor. So the new image will not be the same as the old one. In this case, a dilation with scale factor 2 means the new figure is twice as large (each side is twice as long). But the old image is similar to the new image. The angles keep their values and therefore we get the same shape. This is why choice B is the answer. Again this is assuming what I mentioned in the first paragraph.
Choices A, C, and D are all known as rigid transformations and they preserve the same size of the figure. Applying any of those operations will lead to the same figure (just rotated, reflected or shifted somehow). In other words, applying operations A,C, or D will have us get two congruent triangles. If two triangles are congruent, then they are automatically similar, but not vice versa. This is why we can rule out A,C, and D.
Answer:
B
Step-by-step explanation:
dave says:
the only quadrilateral with two lines of symmetry is a rectangle
is dave correct
explain your answer
There are 2 symmetry lines of a rectangle which are from its length and breadth. These two lines cut the rectangle in two similar halves which are mirror images of each other. If a rectangle is folded along its line of symmetry, it superimposes perfectly.
I WILL GIVE THE REST OF MY POINTS (100 SOMETHING) TO THE PERSON WHO ANSWERS THIS RIGHT BY CREATING A NEW QUESTION AND ALSO WILL GIVE BRANLIEST
Mr. Townsend needs to make 13 pairs of butterfly wings for costumes for a play.
Each pair of wings is made with yard of fabric. The fabric costs $8 per yard.
You'll apply properties of multiplication in the following steps to find the total cost of the fabric.
1. Use multiplication to write an expression for the amount of fabric needed to make 13 pairs of wings.
2. Multiply the amount of fabric by the price per yard to find an expression for the total cost.
3. Use the associative and commutative properties to rearrange the terms in the expression to make it easier to calculate. Explain why the rearranged expression is easier to work with.
4. Simplify your expression to find the total cost. Show your work
Step-by-step explanation to answer:
So, the unit rate is $8 per yard of fabric now we need a expression which will be 13 times 8. 8 times 10 is 80 and 8 times 3 is 24. 80+24 is 104. We did associative, now we need communative. We will still get the answer to the question as we did with associative which will be 8 times 3 is 24 and 8 times 10 is 80. add that and we will get 104.
Vera owns 17 pairs of socks how many socks does have in all
We know that 2 socks are in a pair. Hence, the rate would be like this: 2 socks/pair. We could also represent it as a ratio and fraction. I will choose the fraction form.
x 17
2 socks = 34 socks
1 pair x 17 17 pairs
Therefore, if Vera owns 17 pairs of socks, she will have 34 socks in total.
can someone please help? the question is an equilateral triangle is sometimes/always/never similar to a scalene triangle, because we can sometimes/always/never map one onto the other using only dial actions rigid transformations.
Answer:
An equilateral triangle is never similar to a scalene triangle, because we can never map one onto the other using only dilations and rigid transformations.
======================================================
Explanation:
An equilateral triangle is one where it has all three sides the same length. "Equi" means "equal" while "lateral" means "side". Any equilateral triangle also has all three angles the same measure (we consider it equiangular). Each angle is 60 degrees.
In contrast, a scalene triangle has all of its sides different, so consequently that means all of its three angles must be different as well. If you had exactly two angles congruent to one another, then the opposite sides would be a congruent pair of sides, but then that leads to an isosceles triangle. Also, if all three angles were the same, then we'd get back to an equilateral triangle. So in short, any scalene triangle has all of its angles different.
------------------
Let's consider two cases
Case 1) The scalene triangle has one angle that is 60 degrees, while the other two angles are not 60 degrees.Case 2) The scalene triangle doesn't have any angles that are 60 degrees.If case 1 happens, then we could match up one pair of 60 degree corresponding angles between the equilateral triangle and the scalene triangle. However, we won't have any more matches. This is because the other two angles aren't 60 (if they were then the triangle isn't scalene). Therefore case 1 leads to dissimilar triangles.
If case 2 happens, then we get the same conclusion as case 1. This time we don't have any angles matching up. Similar triangles must have corresponding angles match up and be congruent. Put another way: similar triangles are the same shape but not necessarily the same size.
------------------
After completing both cases, we can see that it is impossible to have an equilateral triangle be similar to a scalene triangle. In terms of transformations, we cannot apply any of the following
TranslationReflectionRotationDilationand have one triangle turn into the other. Again, it's all because the angles do not match up. We may have one matching pair, but we need all three pairs to match.
Andrea had $43.50 to spend on groceries. After buying 4 boxes of cereal, she had $27.70 left. If each box of cereal costs the same amount, what is the price of one box of cereal?
Answer:
$3.95
Step-by-step explanation:
43.50-27.70=15.80
15.80÷4=3.95
Anna drives 45 km to work each day.
One day she drives the first 25 km at an average speed of 82 km/h. She takes 36 minutes to drive the remaining distance.
Calculate her average speed, in km/h, for the whole journey.
Answer:
Anna drove at an average speed of 49.73 km/h
Step-by-step explanation:
Average Speed
If an object moves at different speeds to cover a certain total distance dt in a total time tt, the average speed is:
[tex]\displaystyle \bar v=\frac{d_t}{t_t}[/tex]
Anna drives a total distance of dt=45 km each day. One day she drives a distance of d1=25 km at v1=82 Km/h. The time taken for that distance is:
[tex]\displaystyle t_1=\frac{d_1}{v_1}=\frac{25}{82}=0.3049\ h[/tex]
She takes t2=36 minutes to drive the remaining distance. 36 minutes is 36/60=0.6 h, thus the total time is:
[tex]t_t=0.3049\ h+0.6\ h=0.9049\ h[/tex]
The average speed is:
[tex]\displaystyle \bar v=\frac{45}{0.9049}=49.73\ km/h[/tex]
Anna drove at an average speed of 49.73 km/h
The answer choices are
16/25
-4/25
-16/5
4/5
The table below shows all of the possible outcomes for rolling two six-sided number cubes.
A table with 36 possible outcomes. There are 9 desired outcomes.
What is the probability of rolling an even number first and an odd number second?
1/9
1/6
1/4
1/2
C. 1/4
There is a table with 36 possible outcomes. 9 of them are desired outcomes because they have an even number rolled first and then an odd number rolled second (a few random examples from the table would be 2,1, 2,3, 4,1, 4,5, 6,3 etc.)
All we have to do is make a fraction of the desired outcomes over the total number of possible outcomes. 9/36. That can be simplified into 1/4 and voilà, there is your answer.
Hope this helped ッ
My Answer:
The of getting an even number in first and an odd number second is 1/4.
That would be option C.
I just took the quiz in math on edge 2020/2021
I hope this helps!
:)
A company sells widgets. The amount of profit, y, made by the company, is related to
the selling price of each widget, x, by the given equation. Using this equation, find out
the maximum amount of profit the company can make, to the nearest dollar.
y = -8x2 + 242x – 1056
Answer:
774 dollars
Step-by-step explanation:
Given the amount of profit, y, made by the company, is related to
the selling price of each widget, x, by the given equation
y = -8x^2 + 242x – 1056
The company made her maximum profit when dy/dx = 0
dy/dx = -16x + 242
0 = -16x + 242
16x = 242
x = 242/16
x = 15.125
Get the maximum amount of the profit
Substituting x = 15.125 into the function we have:
y = -8(15.125)^2 + 242(15.125) – 1056
y = -8(228.77)+3,660.25-1056
y = -1,830.09+3,660.25-1056
y = 773.91
Hence the maximum amount of profit the company can make, to the nearest dollar is 774 dollars
which expression is equivalent to the expression shown below?
-1/2(-3/2x + 6x + 1) - 3x
A) 3/2x - 1/2
B) 6 3/4x - 1/2
C) -3/4x + 1/2
D) -5 1/4x - 1/2
Answer:
vcbnvjhgbvnhtrgbhj hy6tyuk
Step-by-step explanation:
The correct answer is: [D]: " (-5 )x − " .
_________________________________________________________
Explanation:
_________________________________________________________
" -1/2(-3/2x + 6x + 1) − 3x " ;
= (-1/2 * -3/2 x) + (-1/2 * 6x) + (-1/2 * 1) − 3x ;
= [ (-1 *-3) /(2*2)] x + (-3x) + (-1/2) ] − 3x ;
= [ (3/4)x − 3x − (1/2) ] − 3x ;
= (3/4)x − 3x − (1/2) − 3x ;
= ?? ; → Combine the "like terms" ;
→ "(3/4)x − 3x − 3x " = ?? ;
→ "(3/4)x − 3x = "(-9/4)x";
→ "(-9/4)x − 3x = "(-21/4)x " = " (-5 )x " ;
→ The answer is: " (-5 )x − " ;
___________________________________________________
→ which is:
___________________________________________________
→ Answer choice: [D]: " (-5 )x − " .
___________________________________________________
Enny is selling candles for $3 each at a fund-raiser. If she starts selling with $4 to help her make change, how many candles, x, will she have to sell to end up with $19?
Answer:
5 candles
Step-by-step explanation:
Enny is selling candles for $3 at a fund raiser
She starts selling $4 to help her make change
Therefore the number of candles x that will be sold to get $19 can be calculated as follows
3x + 4= 19
3x = 19-4
3x= 15
x = 15/3
x= 5
Hence 5 candles must be sold to get $19
Lana has 6 bags with 3 candy bars in each bag. Markus has 3 bags with 4 candy bars in each bag. How many more candy bars does Lana have?
Answer:
Lana has 6 more candy bars than Markus.
Step-by-step explanation:
Lana has 6 bags, each with 3 candy bars. To find the total amount you multiply 6 by 3 which is 18. Markus has 3 bags, each with 4 candy bars, to find the total amount you also multiply 3 by 4 which is 12. Now you subtract: 18-12=6. So Lana has 6 more candy bars than Markus.
Answer:
Lana has 6 candy bars more than Markus
Step-by-step explanation:
6 x 3 = 18
3 x 4 = 12
18 - 12 = 6
find two fraction with the same
denominator that are equivalent to 7/8 and 5/12
Answer:
21/24 and 10/24
Step-by-step explanation:
7/8 is equaivalent to 7*2/8*2 = 14/16 also to 7*3/8*3=21/24
5/12 is equivalent to 5*2/12*2= 10/24
so the denominators are 16 and 24 so are not the same so keep looking
the denominators 24 and 24 are same so your answer is
7/8 and 5/12 are same and have the same denominator to 21/24 and 10/24
Complete the description of the slope of the line that joins the points
positive
negative
0
undefined
Step-by-step explanation:
the points are undefined
yeah I gotchuuu
Help with all questions in this pic
can anyone please help i am stuck on this question?
Answer:
8/17
General Formulas and Concepts:
Trigonometry
[Right Triangles Only] cos∅ = adjacent over hypotenuseStep-by-step explanation:
Step 1: Define
We are given a right triangle. We can use trig to find the ratio.
Step 2: Identify
POV from angle S
Adjacent = 8
Hypotenuse = 17
Step 3: Write
Substitute [cosine]: cos(s) = 8/17Help I will mark brainly
Answer:
Use M A T H W A Y. It helps.
Answer:
A) -9.8 × (-23.5)
Step-by-step explanation:
negative × negative = positive
negative × positive = negative
positive × positive = positive
will mark branliest if correct:)
Answer:
If im not mistaking its b
Step-by-step explanation:
you gotta divide the nubers inside the box thing with then numbers outside it then multiply
19 dozen cookies to individual cookies
Answer:
228 individual cookies.
Step-by-step explanation:
To convert 19 dozen cookies to individual cookies, we first have to identify that:
[tex]dozen=12[/tex]
If a dozen is equal to 12, to solve, we simply must multiply the amount of dozens, which is 19, by a dozen, which is 12:
[tex]19*12=[/tex]
[tex]228[/tex]
Therefore, there are 228 individual cookies.
-
We can check our work by dividing the individual number of cookies, 228, by dividing buy the amount of dozens, 19, and a dozen, 12:
[tex]228[/tex] ÷ [tex]19=12[/tex]
[tex]228[/tex] ÷ [tex]12=19[/tex]
As you can see, our quotients are the two figures we started with, and when multiplied together, give us 228 individual cookies; therefore, our solution is correct!
Solve. W=2, p=3 ........ 5p-2w
Answer:
11
Step-by-step explanation:
w = 2
p = 3
5p - 2w
5(3) - 2(2)
15 - 4
11
Answer:
11
Step-by-step explanation:
Substituting p and w gets 5(3)-2(2). Simplifying gets 25-4 which is 21.
I need help-
if a ladder is to reach a height of 5.6m, the base must be at least 1.4m from the wall. How long should the ladder be in order to meet this safety regulations?
Answer:
≈ 5.72 mStep-by-step explanation:
Use Pythagorean as the ladder is going to be a hypotenuse of a formed right triangle with legs of 5.6 m and 1.4 m
Ladder length:
√5.6² + 1.4² = √32.76 ≈ 5.72 m rounded16a² − 25?? please help
Answer:
(4a - 5)(4a + 5)
Step-by-step explanation:
Assuming you require to factor the expression
Given
16a² - 25 ← is a difference of squares and factors in general as
a² - b² = (a - b)(a + b)
16a² - 25
= (4a)² - 5²
= (4a - 5)(4a + 5) ← in factored form
Answer100 POINTS! (50 split up) PLSSSSSTO GIVE BRAINLIEST AND FIVE STARS AND A THANKS! 6TH GRADE SCIENCE! i used all my points for this!
You measure the mass of an apple using a balance.
PLEASE HELP ME OUT I NEED THIS BY TONIGHT!!!!
A tree is 6 feet high. Each year, x, it grows 2 feet. Write an equation to model the height, y, of the tree after x years. What is the height of the tree after 7 years?
Answer:
1) y=2x+6
Step-by-step explanation:
2) y=2×7+6=20ft
Answer:
y = 2x + 6 and the height is 20 feet after seven years.
Step-by-step explanation:
Hello we meet again.
You substitute the x with 7 and then it will be 2(7)+6. 2 times 7 is 14 plus 6 equals 20 so good luck.
N EED ANSWER NOW ON TIMER PLASERA
Answer:
17/190
Step-by-step explanation:
Its correct
Answer:
D
Step-by-step explanation:
1 x 17 = 17
10 x 18=180
so it's 17/180