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3 years ago

CAN SOMEONE PLEASE HELP ME WITH MY MATH ASAP PLEASE!!!!

Mathematics

1 answer:

Ivanshal [37]3 years ago

8 0

Answer:

Step-by-step explanation:

Hello,

The two triangles are similar and x is positive, different from 0, so we can write.

$\dfrac{x}{9}=\dfrac{12}{x}\\\\x^2=12\times 9\\\\ x = \sqrt{4\times 3 \times 9}=2\times 3 \times \sqrt{3}\\\\ \boxed{\sf \bf x=6\sqrt{3} }$

Thanks

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How do I get the answer for #2. What’s the equation to get to the answer please?

Snezhnost [94]

Answer:

GED=2FED. Multiply by 2.

Step-by-step explanation:

The page says that the diagram is not to scale, and that EF bisects(cuts in half equally) GED. Don't go by what it looks like, FED and FEG are equal in size. So each one is 1/2 of GED.

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3 years ago

please help! i need to find the missing sides of these triangles. will give brainliest if solvers correctly :))

asambeis [7]

Answer:

3.72769

Step-by-step explanation:

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3 years ago

If the original quantity is 14 and the new quantity is 22, which of these is the best estimate for the percent of change?

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3 years ago

A study of 40 English composition professors showed that they spent, on average, 13 minutes correcting a student's term paper. T

photoshop1234 [79]

Answer:

90% confidence interval for the mean grading time of all composition papers.

(12.47981 , 13.52019)

Appropriate inequality

The interval is ( 12.47981 < μ < 13.52019)

Step-by-step explanation:

Explanation:-

Given sample size 'n' = 40

Mean of the sample = 13 minutes

standard deviation = 2 min

level of significance = 0.10 or 90%

90% confidence interval for the mean grading time of all composition papers.

$( x^{-} - Z_{0.1} \frac{S.D}{\sqrt{n} } , x^{-} + Z_{0.10} \frac{S.D}{\sqrt{n} } )$

$( 13 - 1.645 \frac{2}{\sqrt{40} } , 13 +1.645 \frac{2}{\sqrt{40} } )$

( 13 - 0.52019 , 13 + 0.52019)

(12.47981 , 13.52019)

The interval is ( 12.47981 < μ < 13.52019)

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3 years ago

HELP!! ILL GIVE BRAINLIEST

xxTIMURxx [149]

Answer:

The answer is 90 degrees.

Step-by-step explanation:

If you want an explination, I'm more than happy to explain.

4 0

3 years ago

Read 2 more answers

CAN SOMEONE PLEASE HELP ME WITH MY MATH ASAP PLEASE!!!!​

CAN SOMEONE PLEASE HELP ME WITH MY MATH ASAP PLEASE!!!!