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3 years ago

How would I solve and answer these two questions? I'm having a hard time understanding them.

Mathematics

1 answer:

postnew [5]3 years ago

8 0

Answer:

The first one is either 88 feet or 90 feet

Step-by-step explanation:

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The diameter of the circle is 9.7 m . Calculate the length of its circumference. Round to the nearest tenth and remember to use

RSB [31]

Answer:

30.4m

Step-by-step explanation:

Diameter(D) = 2r (radius)

D = 9.7m

r = 9.7m / 2

= 4.85m

C = 2πr

= 2π × 4.85m

= 30.47344873982099m

rounding - Leave it as is if the digit in the tenth is 4 or lower

- round it up if it's 5 or higher.

~~ 30.4m

5 0

2 years ago

The distribution of prices for home sales in a certain New Jersey county is skewed to the right with a mean of $290,000 and a st

I am Lyosha [343]

Answer:

The probability that the mean of the sample is greater than $325,000

$P( X > 3,25,000) = P( Z >2.413) = 0.008$

Step-by-step explanation:

Step(i):-

Given the mean of the Population( )= $290,000

Standard deviation of the Population = $145,000

Given the size of the sample 'n' = 100

Given 'X⁻' be a random variable in Normal distribution

Let X⁻ = 325,000

$Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } } = \frac{325000-290000}{\frac{145000}{\sqrt{100} } } = 2.413$

Step(ii):-

The probability that the mean of the sample is greater than $325,000

$P( X > 3,25,000) = P( Z >2.413)$

= 0.5 - A(2.413)

= 0.5 - 0.4920

= 0.008

Final answer:-

The probability that the mean of the sample is greater than $325,000

$P( X > 3,25,000) = P( Z >2.413) = 0.008$

6 0

3 years ago

BRAINLIEST ASAP! PLEASE. HELP ME :) I need help with part 2 of the question.

tino4ka555 [31]

Part 2:

-4a + 2 + 11a = 5a + 3 + 2a

~Combine like terms

7a + 2 = 7a + 3

~Subtract 2 to both sides

7a = 7a - 1

~Subtract 7a to both sides

0 = 1

Therefore, there are no solutions.

Best of Luck!

3 0

3 years ago

Read 2 more answers

Which answers are equal to the expression below? Check all that apply PLEASE WILL GIVE BRAINLIEST

kramer

Answer:

B., D., E.

Step-by-step explanation:

$\sqrt{9} \cdot \sqrt{100} =$

$= \sqrt{9 \cdot 100}$ This is choice B.

$= \sqrt{900}$ This is choice E.

$= 30$ This is choice D.

5 0

3 years ago

Somebody please help asapppppp

anzhelika [568]

The function was moved two units to the left (a)

8 0

3 years ago