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BaLLatris [955]
3 years ago
12

Is 1/4(8y-12) equivalent to 2y-12 explain why or why not

Mathematics
1 answer:
Vanyuwa [196]3 years ago
8 0

Answer:

No

Step-by-step explanation:

First simplify the first expression.

Distribute.

1/4(8y-12) = 1/4 * 8y + 1/4 * -12

8y * 1/4 = 8y / 4 = 2y

-12 * 1/4 = -12 / 4 = -3

1/4(8y-12) = 2y - 3

2y - 12 != 2y - 3

So it is not equivalent.

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Elanso [62]

Answer: Im pretty sure its 143 if it was degrees but yeah

Step-by-step explanation:

7 0
2 years ago
Find the value of b. Then find the angle measures of the pentagon.
melamori03 [73]

Answer:

b = 90

Step-by-step explanation:

Sum the interior angles of the pentagon and equate to 540

Starting from the top and going clockwise

b + b + 45 + 90 + 2b - 90 + \frac{3}{2} b = 540 ← simplify left side

\frac{11}{2} b + 45 = 540 ( multiply through by 2 to clear the fraction )

11b + 90 = 1080 ( subtract 90 from both sides )

11b = 990 ( divide both sides by 11 )

b = 90

Thus

b + 45 = 90 + 45 = 135

2b - 90 = 2(90) - 90 = 180 - 90 = 90

\frac{3}{2} b = \frac{3}{2} × 90 = 135

The angle measure from the top clockwise are

90°, 135°, 90°, 90°, 135°

7 0
3 years ago
What is the answer?<br> 12 x 4 1/2<br> =
mina [271]

Answer:

54

Step-by-step explanation:

4.5 ×12 and then you get the answer

8 0
3 years ago
Read 2 more answers
Find the mean and median of the data set.
zhuklara [117]

Answer:

Mean: 50.8 or 51 (rounded)

Median: 51.5 or 52 (rounded)

Step-by-step explanation:

To find the mean I added all the numbers then divides my sum but the number of numbers.

To find the median I listed the numbers from least to greatest.There are two middle numbers so I added the two numbers and divided the same by 2.

3 0
3 years ago
3x + y = 8<br><br> -x + y = -4<br> Solve the system. Write your answer as an ordered pair (x, y)
timurjin [86]
I hope this helps you



x=y+4



3 (y+4)+y=8


3y+12+y=8


4y= -4


y= -1


x= -1+4


x=3


(3, -1)
8 0
3 years ago
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