3 years ago

I neeed helpz pwease and tyvm 1st one will be mark as brainliest

Mathematics

1 answer:

Lunna [17]3 years ago

6 0

Answer:

The answer is D

Step-by-step explanation:

A=2πrh+2πr²

A/2πr=h+2πr²

A-2πr²/2πr=h

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Question 5

kogti [31]

Answer:

ggggggggggggggggg

Step-by-step explanation:

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3 years ago

How can I solve this?

anygoal [31]

A = x > -3 and x < 4

B = x >withlineunder -3 and x <withlineunder 4

C = X < - 3 or X > 4

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3 years ago

A class's exam scores are normally distributed. If the average score is 65 and the standard deviation is 6, what percentage of s

tiny-mole [99]

Standardising X=71 to find z-score

$z-score= \frac{71-65}{6} =1$

reading from z-table

$P(Z\ \textless \ 1)=0.8413=84.13%$

Students score below 71 is 84.13%

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3 years ago

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A scientist measures the angle x and the distance y between the Earth and the Sun. Using complete sentences, explain how the sci

Nat2105 [25]

We know that :

$\spadesuit$ $Cos\theta = \frac{Adjacent Side}{Hypotenuse}$

Here Adjacent Side is BC, which is Distance between the Sun and Earth

Hypotenuse is CA, which is Distance between the Sun and Shooting star

⇒ $Cosx = \frac{BC}{CA}$

Given : Distance between Earth and Sun (BC) = y

⇒ $Cosx = \frac{y}{Distance\;between\;the\;Sun\;and\;Shooting\;Star}$

⇒ $Distance\;between\;the\;Sun\;and\;Shooting\;Star = \frac{y}{Cosx}$

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3 years ago

What is the value of x

IgorLugansk [536]

Vertical angles are always equal.
x = 130
That's your answer.
Have an awesome day! :)

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3 years ago