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3 years ago

1. Scientists randomly select ten groups from a population of men over 50 years old. They calculate the mean

Mathematics

1 answer:

DedPeter [7]3 years ago

7 0

Answer:

Step-by-step explanation:

Sampling Variability

Hope that helped! :)

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Define the word expression to me. Use proper English and complete sentences.

MA_775_DIABLO [31]

Answer:

yes

Step-by-step explanation:

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3 years ago

NEED HELP WITH THIS.

Nataly [62]

Answer:

32 ft, 10 subtract the width of the path and you're left with an 8 foot by 8 foot square equal on all sides, 8 times 4 is 32 getting you the amount of fence needed

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3 years ago

One hundred samples of five data points were randomly selected from each of four

spayn [35]

91 samples were least the populations

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2 years ago

John borrowed $ from bank for 3 years at a rate of 10%

garik1379 [7]

<h3>Given:</h3>

P= $12500
R= 10%
T= 3 years

P= Principal amount
R= Rate of interest
T= Time period

The simple interest
The total amount paid

<h3>Solution:</h3>

$\large\boxed{Formula: I= \frac{PRT}{100}}$

First, we'll have to multiply, principal amount (12500), rate (10) and time period (3).

$12500×10×3$

$=375000$

Now, we'll have to divide the amount (375000) by 100.

$\frac{375000}{100}$

I=$3750

Now, we can find the total amount paid.

$\large\boxed{A=SI+P}$

Let's substitute according to the formula.

$A=3750+12500$

A=$16250

Therefore, simple interest is $3750 and $16250 was paid in total.

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2 years ago

The equation shown below involves a perfect square trinomial. 4x2 + 20x + 25 = 7 Which of the following is a step in solving thi

fomenos

4 x^2 + 20 x + 25 = 7
Divide both sides by 4:
x^2 + 5 x + 25/4 = 7/4
Write the left-hand side as a square:
(x + 5/2)^2 = 7/4
Take the square root of both sides:
x + 5/2 = sqrt(7)/2 or x + 5/2 = -sqrt(7)/2
Subtract 5/2 from both sides:
x = sqrt(7)/2 - 5/2 or x + 5/2 = -sqrt(7)/2
Subtract 5/2 from both sides:
Answer: x = sqrt(7)/2 - 5/2 or x = -5/2 - sqrt(7)/2

3 0

4 years ago