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3 years ago

Find the value of x. If necessary, write your answer in simplest radical form.

Mathematics

1 answer:

Step2247 [10]3 years ago

8 0

Step-by-step explanation:

PYTHAGORAS THEOREM

${c}^{2} - {b}^{2} = {a}^{2} \\ {7}^{2} - {5}^{2} = {x}^{2} \\ 49 - 25 = 24 \\ \sqrt{24} = 4.89897948557$

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Please Help will give brainliest answer if correct

Effectus [21]

Answer:

g(x)=2x+4+x+1

Step-by-step explanation:

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3 years ago

An airplane took 2 hours to fly 600 km against a head wind. The retrun trip with the wind took 1 and two thirds hours. Find the

Agata [3.3K]

Answer:

The speed of plane in still air is 330 kmph

Step-by-step explanation:

Given as :

The distance cover against the wind = 600 km

The time taken against the wind = 2 hours

The distance cover with the wind = 600 km

The time taken with the wind = ( 1 + $\frac{2}{3}$ ) hours

= $\frac{5}{3}$ hours

Let The speed against the wind = x - y kmph

The speed with the wind = x + y kmph

where x is the speed of plane in still air

And y is the speed of wind

So , Speed = $\dfrac{\texrm Distance}{\texrm Time}$

Or, x - y = $\frac{600}{2}$ = 300 ......A

And x + y = $\frac{600}{\frac{5}{3} }$

Or , x + y = 360 .......B

From eq A and B

( x + y ) - ( x - y ) = 360 - 300

Or, 2 y = 60

∴ y = $\frac{60}{2}$ = 30 kmph

And x = 360 - 30 = 330 kmph

Hence The speed of plane in still air is 330 kmph Answer

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3 years ago

Please help!! Will mark brainliest!!

larisa [96]

1. The equations are Consistent and Independent because they intersect at only one point.

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I hope this helps :)

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3 years ago

Read 2 more answers

A new runner has decided to purchase a new pair of running shoes. He has narrowed his choices to two brands, each of which would

Brut [27]

Answer:

Paired difference t test

Step-by-step explanation:

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The difference between the two readings are taken for each runner and used to perform a hypothesis test:

t = μd/ (s/√n)

s = sample standard deviation ; n = sample size ; μd = mean difference

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3 years ago

Quick math problem, need help ASAP!

adelina 88 [10]

Answer:

I think it's systamatic. I'm not completely sure sorry

Step-by-step explanation:

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4 years ago