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3 years ago

Geometric mean. Find x, y, and z. Show work please.

Mathematics

1 answer:

Aleks [24]3 years ago

4 0

Answer:

Step-by-step explanation:

i dont know the rest but the answer to x is 15 because the formula to that triangle is A^2+B^2=C^2

A=12

B=9

144(12^2) and 81 (9^2) add

225

find square root

z=15

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When Lorenzo finished his exam last week, he thought the test was over. But the instructor put z-scores on each student's paper

Anarel [89]

Answer:

Lorenzo's score on exam was 75.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 61

Standard Deviation, σ = 8

We are given that the distribution of test score is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

z-score = 1.75

We have to find the value of x.

Putting values, we get

$1.75 = \dfrac{x - 61}{8}\\\\x = 1.75(8) + 61\\x = 75$

Thus, Lorenzo's score on exam was 75.

5 0

3 years ago

Alfonso solved a division problem by drawing an area model . a. Look at the area model . What division problem did Alfonso solve

r-ruslan [8.4K]

Answer:

The answer is " $\frac{72}{4} =18$ ".

Step-by-step explanation:

Given value:

4 40 32

Solution:

${\boxed{4\ \boxed{40} \ \boxed{32}}}$

If we divide the value by 4 it will give 10 and 8.

$\to \frac{40}{ 4} = 10\\\\\to \frac{32}{ 4} = 8\\$

If we add the boxed value it will be equal to 72 and divide the value by 4 it will give a value 18.

$\to 40+32 =72\\\\\to \frac{72}{4}=18$

8 0

3 years ago

What is .55, 0.59, .091, .0019, .0091, 5.0, 90.5 in order from least to greatest

postnew [5]

Answer:

0.0019, 0.0091, 0.091, 0.55, 0.59, 5.0, 90.5

8 0

3 years ago

What is the solution to this equation? x-8=15 A)x=13 B)x=17 C)x=7 D) x=23

Blababa [14]

Hi there! :)

Answer:

x=23

*The answer must have a positive sign.*

Step-by-step explanation:

This lesson it's about addition property of equality.

First, you add by 8 from both sides of an equation.

$x-8+8=15+8$

And then, you add by the numbers. Simplify and solve.

$15+8=23$

Final answer: → $x=23$

Hope this helps!

Thanks!

-Charlie

Have a great day!

3 0

3 years ago

Listen

makkiz [27]

Answer:

The answer is the third equation. A = 250*(1 +0.016)^(0.75)

Step-by-step explanation:

Since Javier deposited $250 into an account with annual interest rate, then as the years passes his account will grow in the manner shown below:

account(0) = 250

account(1) = account(0)*(1 + 1.6/100) = account(0)*(1 + 0.016) = account(0)*1.016

account(2) = account(1)*1.016 = account(0)*1.016*1.016 = account(0)*(1.016)²

account(3) = account(2)*1.016 = account(0)*(1.016)²*1.016 = account(0)*(1.016)³

account(n) = account(0)*(1.016)^n

Where n is the number of years, account(0) is the initial amount. In this case only 9 months have passed, so we need to convert this value to years, dividing it by 12, which is 9/12 = 0.75. The initial amount was 250, so the equation is:

A = 250*(1.016)^(0.75)

The answer is the third equation.

7 0

3 years ago

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