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3 years ago

13

Figure out the x and y inverse

1 answer:

12345 [234]3 years ago

5 0

Answer:

9 = <u>22.5</u>

0=<u>0</u>

<u>11</u>=27.5

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Find the endpoint of the segment with the endpoint of (-4, 5) and midpoint of (7, -9)

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Answer -4+X/2=7

-4+X=14

X=18

5+Y/2=-9

5+Y=-18

Y=-23

18,-23

Step-by-step explanation:

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Find the measure of the angle indicated

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3 Lizzie buys 3 clocks for a total cost of £50 at a car boot sale.

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Answer:

28% She didn't make a profit over 30%

Step-by-step explanation:

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19. When baking a cake, you have a choice of the following pans:

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What is vaule of y when x=4'5

Degger [83]

Answer:

$y = 2.096$ or $y = \frac{2\sqrt5+6}{5}}$

Step-by-step explanation:

Given

$y = \frac{4}{x} + \sqrt x + 0.2 - 5x$

$x = \frac{4}{5}$

Required

Find y

$y = \frac{4}{x} + \sqrt x + 0.2 - 5x$

Substitute $x = \frac{4}{5}$

$y = \frac{4}{4/5} + \sqrt{4/5} + 0.2 - 5 * 4/5$

$y = 5 + \sqrt{4/5} + 0.2 - 4$

Collect like terms

$y = \sqrt{4/5} + 5 + 0.2 - 4$

$y = \sqrt{\frac{4}{5}} + 1.2$

Split the surd

$y = \frac{\sqrt4}{\sqrt5}} + 1.2$

$y = \frac{2}{\sqrt5}} + 1.2$

Rationalize

$y = \frac{2\sqrt5}{\sqrt5*\sqrt5}} + 1.2$

$y = \frac{2\sqrt5}{5}} + 1.2$

Take LCM and add

$y = \frac{2\sqrt5+1.2*5}{5}}$

$y = \frac{2\sqrt5+6}{5}}$

or solve as:

$y = \frac{2*2.24+6}{5}}$

$y = \frac{10.48}{5}$

$y = 2.096$

7 0

3 years ago