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3 years ago

7

A random sample of house sizes in major city has a sample mean of

1 answer:

Kazeer [188]3 years ago

5 0

Answer:

A random sample of house sizes in major city has a sample mean of ¯x=1204.9 x ¯ = 1204.9 sq ft and sample standard deviation of s=124.6 sq ft. Use the Empirical Rule to determine the approximate percentage of house sizes that lie between 955.7 and 1454.1 sq ft.:

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Simplify 5x(3x^2+2x-3)

Tcecarenko [31]

Answer:

$15x^3 +10x^2 - 15x$

Step-by-step explanation:

Hello!

Use the distributive property and multiply like terms.

<h3>Simplify</h3>

$5x(3x^2 + 3x - 3)$
$5x(3x^2) + 5x(2x) + 5x(-3)$
$15x^3 +10x^2 - 15x$

The simplified form is $15x^3 +10x^2 - 15x$ .

4 0

1 year ago

Read 2 more answers

Safiya deposited money into a bank account that earned 6.5% simple interest each year. After 312 years, she had earned $36.40 in

Svetllana [295]

Answer: If the time is 3 1/2 years (most reasonable assumption)

Her initial deposit was $160

Step-by-step explanation: The basic formula for simple interest is

<em>i = prt i </em>is interest, P is principal (deposit) r is the percentage (converted to a decimal) and t is time, the number of years.

For this question, you have to rearrange the equation to solve for p.

So divide both sides by rt and you have

p = i/rt

Substitute the values given

p = 36.40/(0.065)(3.5)

8 0

3 years ago

A bicycle went 120 miles in 5 hours. A motorcycle is three times as fast as the bicycle. Find the speed of motorcycle.

NemiM [27]

360 miles per 5 hours 5!!!!

7 0

3 years ago

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Pls do it fast ill mark you brainliest

anygoal [31]

Answer:

$\sf y=7\frac{2}{3}$ and $\sf x = \frac{2}{3}$

Explanation:

$\sf (1) \ \ (2x+y = 9)$

$\sf (1) \ \ (2x+5y = 37)$

<u>solve for y</u>:

$\sf 2x + y = 9$

$\sf 2x + 5y = 37$

-----------------

$\sf 0x + 6y = 46$

$\sf 6y = 46$

$\sf y=\frac{23}{3}$

$\sf y=7\frac{2}{3}$

<u>solve for x</u>:

$\sf 2x + y = 9$

$\sf 2x = 9 - y$

$\sf 2x = 9 - \frac{23}{3}$

$\sf 2x = \frac{4}{3}$

$\sf x = \frac{2}{3}$

8 0

2 years ago

?????? Someone help please aaaaa

timama [110]

Answer:

just search it up

Step-by-step explanation:

okay

6 0

3 years ago