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Harlamova29_29 [7]
3 years ago
7

If k is parallel to l find the value of a and the value of b.

Mathematics
1 answer:
kipiarov [429]3 years ago
3 0

Answer:

a = 30

b = 40

C

Step-by-step explanation:

This requires that you use a proportion.

a / (a + 15) = 40 / 60

The small triangle's sides are in proportion to the large triangles sides.

Reduce the right. Divide top and bottom by 20

a/(a + 15) = 40/20 // 60/20

a/(a + 15) = 2/3                    

Cross multiply

3a = 2(a + 15)            Remove the brackets on the right.

3a = 2a + 30

Subtract 2a from both sides

3a-2a = 30

a = 30

Find B

b is done exactly the same way.

b/(b+20) = 2/3

3b = 2b + 40

3b - 2b = 40

b = 40

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Sarah and Bryan went shopping and spent a total of $47.50 Bry an spent $15.50 less than what Sarah spent how much did bryan spen
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Since Bryan spent $15.50 less than Sarah, you would start by dividing the total amount they spent together in half.

$47.50 ÷ 2 = $23.75

Then you would take Bryan's 1/2 of the total and subtract $15.50.

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So, it looks like Bryan spent $8.25.

Check step:

If you add it all back together:

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3 years ago
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Answer:

a) AB = 17 m

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Step-by-step explanation:

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AB^2 = (26-11)^2 + 8^2

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AC^2 = 433

AC = 20.8 m

7 0
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Step-by-step explanation:

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