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belka [17]
3 years ago
14

Solve for y a. 7 cmb. 20 cmc. 14 cmd. 10 cm​

Mathematics
1 answer:
Rainbow [258]3 years ago
7 0

Answer:

20 cm

Step-by-step explanation:

We can use ratios to solve

We know x = 7 since they are of equal length

x          x+7

----- = -------

10         y

7          7+7

----- = -------

10         y

Using cross products

7y = 14*10

7y = 140

Divide by 7

7y/7 = 140/7

y = 20

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Determine the x and y intercepts for the line 3x – 5y + 15 = 0. Show your work.
iragen [17]

Answer:

Step-by-step explanation:

The x and y intercepts occur when either x or y = 0

For the y intercept, x = 0

3(0) - 5y + 15 = 0

- 5y + 15 = 0                  Subtract 15 from both sides.

-5y = - 15                       Divide by - 5

-5y / -5 = - 15/-5

y = 3

For x intercept, y = 0

3x - 5(0) + 15 = 0

3x + 15 = 0                    Subtract 15 from both sides

3x = - 15                        Divide by 3

3x/3 = - 15/3

x = - 5

xintercept = (-5,0)

yintercept = (0,3)

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Determine the slope and y-intercept of the graph:<br> 2x + 5y = 10
FinnZ [79.3K]

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Step-by-step explanation:

  • Step 1: Write the equation in slope-intercept form y = mx + b

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y = -2/5 x + 10/5

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  • Step 2: Find the slope and y-intercept from the equation.

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