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3 years ago

PLLLLEEEAAAASSSSSEEEE HELP!

Mathematics

1 answer:

Lana71 [14]3 years ago

8 0

Answer:

see explanation

Step-by-step explanation:

The length of the arc is calculated as

arc = circumference of circle × fraction of circle

= 2πr × $\frac{90}{360}$ ← r = 1

= 2π × $\frac{1}{4}$ = $\frac{\pi }{2}$ ≈ $\frac{3.14}{2}$ = 1.57

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If the heights of 99.7% of American men are between 5' 0" and 7' 0", what is your estimate of the standard deviation of the heig

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6'0

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2 years ago

Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 99% confidenc

quester [9]

Answer: 18

Step-by-step explanation:

The formula to find the minimum sample size is given by :_

$n=(\dfrac{z^*\cdot \sigma}{E})^2$

, where $\sigma$ = population standard deviation.

z*= critical z-value.

E= Margin of error.

Given : $\sigma= 13$

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3 years ago

A bakery has 4 trays with 16 muffins on each tray .the bakery has 3 trays of cupcakes with 24 cupcakes on each tray.If 15cupcake

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4 years ago

Read 2 more answers

The Expression 4x^2-p(x)+7 leaves a remainder of -2 when divided by (x-3) find the value of p

Romashka-Z-Leto [24]

Answer:

(c) For p = 15, $4x^2-p(x)+7$ leaves a remainder of -2 when divided by (x-3).

Step-by-step explanation:

Here, The dividend expression is $4x^2-p(x)+7$ = E(x)

The Divisor = (x-3)

Remainder = -2

Now, by REMAINDER THEOREM:

Dividend = (Divisor x Quotient) + Remainder

If ( x -3 ) divides the given polynomial with a remainder -2.

⇒ x = 3 is a solution of given polynomial E(x) - (-2) =

$E(x) - (-2) = 4x^2-p(x)+7 -(-2) = 4x^2-p(x)+9$ = S(x)

Now, S(3) = 0

⇒ $4x^2-p(x)+9 = 4(3)^2 - p(3) + 9 = 0\\\implies 36 - 3p + 9 = 0\\\implies 45= 3p , \\or p =15$

or, p =1 5

Hence, for p = 15, $4x^2-p(x)+7$ leaves a remainder of -2 when divided by (x-3).

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3 years ago

5x + 8 − 3x = −10 x = −9 x = −1 x = 1 x = 9

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Answer:

-9

Step-by-step explanation:

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4 years ago