3 years ago

Help me on 13 14 15 a chart is in the corner

1 answer:

8 0

13. is 40 mins
14. is 60 mins
15. is 120

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Leno4ka [110]

Answer:

$\sqrt{55}$

Step-by-step explanation:

Based off of what we do know, if we can find length DB we can use the pythagorous theorem (I will be assigning the variable z)

$x^{2} =36+z^{2} \\\\y^{2}=25+z^2\\\\x^{2} +y^2=121\\\\$

First equation is for triangle ABD

Second is for BCD

And the last one is for ACD

Substitute $x^{2}$ and $y^2$

$36+z^2+25+z^2=121\\\\61+2z^2=121\\\\2z^2=60\\\\z^2=30\\\\z=\sqrt{30}$

As discovered before

$y^2=25+z^2\\\\y^2=25+30\\\\y^2=55\\\\y=\sqrt{55}$

8 0

3 years ago

Inessa [10]

Provided that the length is 3.25 ft:

Area = L x W
= 3.25 ft x 2.75 ft
= 8.94 sq ft

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3 years ago

galben [10]

-3, -1 3/4, 1/10, 1 1/4

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2 years ago

san4es73 [151]

I belive that its C

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3 years ago

Eddi Din [679]

Carol has 15 feet of ribbon

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3 years ago