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lyudmila [28]
3 years ago
14

If AC = 4x-60 and BD = 30-x, find BD (GIVING BRAINLIEST) The figure given is a rectangle

Mathematics
1 answer:
Ray Of Light [21]3 years ago
4 0

Answer:

12

Step-by-step explanation:

AC = BD (as the diagonal of the rectangle)

4x-60=30-x

4x+x = 30+60

5x = 90

x = 90/5

x = 18

=> BD = 30-18 = 12

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9.52% ( to 2 dec. places )

Step-by-step explanation:

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percent increase = \frac{increase}{original} × 100%

increase = 46 - 42 = 4, hence

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Step-by-step explanation:

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3 years ago
Which situation represents a proportional relationship?
Natalka [10]

Answer:

B) Jack biked 5 miles in 25 minutes and 8 miles in 40 minutes.

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form y=kx

The ratio between the two variables is a constant called constant of proportionality k

k=y/x

<u><em>Verify each case</em></u>

A) Julie sold 4 necklaces for $12 and 9 necklaces for $25.

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Multiply in cross

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Is not true

therefore

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B) Jack biked 5 miles in 25 minutes and 8 miles in 40 minutes.

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Multiply in cross

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Is true

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Multiply in cross

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Multiply in cross

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therefore

The situation not represent a proportional relationship

7 0
3 years ago
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