2 years ago

Which of the following has all the justifications Kelsey used to solve this equation?

Mathematics

1 answer:

NeX [460]2 years ago

3 0

Option A, she added the one on both sides which makes it addition property of equality

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What is 5 devided by 1/8th

RSB [31]

The answer would be 40

5 divided by 1/8

5/1 divided by 1/8
5/1 divided by 8/1
then you would multiply
5 times 8
=40/1 or 40

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3 years ago

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Find the missing b for a trapezoid with a=68, h=4, b=21

MAVERICK [17]

We will have to use the formula for the area of a trapezoid on this problem, which is ( $b_1$ and $b_2$ are the bases of the trapezoid and $h$ is the height):

$\dfrac{b_1 + b_2}{2} \cdot h$

All we need to do is substitute the information we are given into our formula:

$\dfrac{21 + b_2}{2} \cdot 4 = 68$

Now, let's just simplify the equation:

$\dfrac{21 + b_2}{2} \cdot 4 = 68$

$\dfrac{21 + b_2}{2} = 17$

$21 + b_2 = 34$

$b_2 = 13$

The missing base has a length of 13 units.

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3 years ago

What is the measure of each angle? Show your work!

nalin [4]

Answer:

pos: 99. Sor: 17. roq: 64

Step-by-step explanation:

(5x+4)+(x-2)+(3x+7)=180

we add the angles to 180 because straight lines are equal to 180

5x+4+x-2+3x+7=180

5x+x+3x+4-2+7=180

9x+9=180

9x=

9x=171

x=19

then we plug x in

5(19)+4 + (19)-2 +3(19)+7 = 180

angles (left right)

99. 17. 64.

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3 years ago

3 hamburgers cost $7.50 altogether. what is the price of 1 hamburger?

kari74 [83]

Answer:

2.5 dollars

Step-by-step explanation:

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In ΔLMN, n = 910 inches, ∠L=64° and ∠M=31°. Find the length of l, to the nearest 10th of an inch

mr_godi [17]

Answer:

821

Step-by-step explanation:

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