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3 years ago

Select ALL the correct answers. MORE THAN ONE ANSWER!!

Mathematics

1 answer:

mina [271]3 years ago

5 0

Answer:

b,c

Step-by-step explanation:

they are the only two tha tproperly use the equation

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A rectangular prism has a volume of 90 cubic feet. The prism has a height of 2 feet and a width of 3 feet. What is the length of

jolli1 [7]

Answer:

Step-by-step explanation:

2x3x15 equals to 90

3 0

3 years ago

If x + 3 = 3x - 1 what is the value of x-1 ?

Allushta [10]

Answer: x=2.5, and x-1=1.5

Step-by-step explanation:

x + 3 = 3x - 1

(-x)= 3 = 2x - 1

(÷2) = 1.5 = x - 1

(+1)= 2.5 = x

8 0

3 years ago

A book costs $12.50 plus sales tax. After tax it costs $13.25. What is the sales tax rate?

WINSTONCH [101]

Answer:

The rate of sales tax is 6%.

Step-by-step explanation:

First you must subtract 12.50 from 13.25

This brings you to .75

Then, divide .75/12.50 to get 0.06 which is equivalent to 6 percent.

6 0

3 years ago

A sample from 16 shortstops was obtained in an effort to determine whether shortstops have higher salaries than other players. T

marissa [1.9K]

Answer:

1.16 to 2.75

Step-by-step explanation:

The mean salary (millions of dollars) for shortstops was 1.95.

$\bar{x}=1.85$

The population mean for all baseball players was 1.85

$\mu = 1.85$

The population standard deviation was 1.61.

$\sigma = 1.61$

Formula of confidence interval : $x-z\times \frac{\sigma}{\sqrt{n}}$ to $x+z\times \frac{\sigma}{\sqrt{n}}$

z at 95% confidence level = 1.96

Substitute the values in the formula

Confidence interval : $1.95-1.96\cdot\frac{1.61}{\sqrt{16}}$ to $1.95+1.96\cdot\frac{1.61}{\sqrt{16}}$

Confidence interval : 1.16 to 2.75

Hence the 95 percent confidence interval for these data is 1.16 to 2.75

8 0

3 years ago

Step 1:Choose the lowest common denominator

mina [271]

Answer:

-6/8 +5/8 and -1/8

Step-by-step explanation:

just got done doing it.

6 0

3 years ago