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2 years ago

What is the value of c?

Mathematics

2 answers:

son4ous [18]2 years ago

8 0

Answer:

c = 5

Step-by-step explanation:

ΔWYZ is a right triangle with ∠Y = 90° and WZ the hypotenuse

Using Pythagoras' identity on the triangle

c² = 3² + 4² = 9 + 16 = 25

⇒ c = $\sqrt{25}$ = 5

lara31 [8.8K]2 years ago

5 0

You have to use the Pythagoreas theorem where you do 3 squared + 4 squared=25
Then you square root 25 which is 5 so
c is 5

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2 years ago

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Write the expression (a^8)2/3 in simplest form.

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Answer:

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Step-by-step explanation:

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2 years ago

If 2x – 10y = -1 and 5x + 6y = 4 are true equations, what would be the value<br> of 7x - 4y?

Zigmanuir [339]

Answer:

Step-by-step explanation:

If the equations are true, they can be solved simultaneously.

Consider 2x-10y=-1 as Eq1 and 5x+6y=4 as Eq2

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6x-30y=-3 -- Eq3 and 25x+30y=20 -- Eq4

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Plugin x=17/31 in Eq3,

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1 year ago

Golf-course designers have become concerned that old courses are becoming obsolete since new technology has given golfers the ab

zhenek [66]

Answer:

test statistic is ≈ -0.36

p-value is ≈ 0.64

There is no significant evidence that the average golfer can hit the ball more than 235 yards on average.

Step-by-step explanation:

a hypothesis test where H_0: mu = 235 and H_1:mu > 235

test statistic can be calculated as follows:

z= $\frac{X-M}{\frac{s}{\sqrt{N} } }$ where

sample mean driving distance (233.8 yards)

M is the average expected distance that the average golfer can hit the ball under null hypothesis. (235 yards)

s is the standard deviation (46.6 yards)

N is the sample size (192)

Then test statistic is z= $\frac{233.8-235}{\frac{46.6}{\sqrt{192} } }$ =-0.3568

p-value is 0.64 >0.05

There is no significant evidence that the average golfer can hit the ball more than 235 yards on average.

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3 years ago