All categories

3 years ago

Mary uses the number line below to represent the solution set of the inequality 50 - 8t < 90

Mathematics

2 answers:

kari74 [83]3 years ago

8 0

Answer:

The line is on the wrong side.

Step-by-step explanation:

Sorry, short on time. I meant to write the process, but I can't.

lys-0071 [83]3 years ago

8 0

$\text{Solve the inequality:}\\\\50-8t$

You might be interested in

Desire <br> Help me with this quistion

aleksandrvk [35]

Answer:

The value of n is 11 feet.

Step-by-step explanation:

Given that the area of rectangle from is A = length×width so we have to substitute the variables into the formula in order to find n :

$area = length \times width$

Let area = 33,

Let length = n,

Let width = 3,

$33 = n \times 3$

$3n = 33$

$n = 33 \div 3$

$n = 11 \: feet$

8 0

2 years ago

A rotation on the origin counterclockwise goes to the right. <br><br> true or false

marta [7]

Answer:

false

Step-by-step explanation:

3 0

3 years ago

You saved $1,240 and your sister agrees to put it in a savings account at her credit union so you can earn interest. You earned

leva [86]

The amount after 2 years is $2,295.

Given that,

The invested amount is $1,240.
The rate of interest is 8%.
The number of years is 2 × 4 = 8

Based on the above information, the amount after 2 years is

Future value = Present value ×(1 + rate of interest)^number of years

= $1,240 × (1 + 0.08)^8

= $1,240 × 1.08^8

= $2,295

Therefore we can conclude that the amount after 2 years is $2,295.

Learn more: brainly.com/question/18051939

7 0

2 years ago

Help help help help help Select the equivalent expression (3^2x5^3

swat32

Answer:

Step-by-step explanation:

(3^2x5)^3=91125

3^6x5^3=91125

5 0

2 years ago

Read 2 more answers

The U.S. and many other countries have recently tightened airport security. A sociologist is interested in estimating the propor

melisa1 [442]

Answer:

0.0073 < 0.05, which means that we reject the null hypothesis and conclude that the true proportion of interest is higher than 0.7.

Step-by-step explanation:

Conduct a test to determine whether the true proportion of interest is higher than 0.7.

This means that the null hypothesis is: $H_{0}: p = 0.7$

And the alternate hypothesis is: $H_{a}: p > 0.7$

The test statistic is:

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the value tested at the null hypothesis, $\sigma$ is the standard deviation and n is the size of the sample.

0.7 is tested at the null hypothesis:

This means that $\mu = 0.7, \sigma = \sqrt{0.7*0.3}$

The sociologist found that 375 of the 500 travelers randomly selected and interviewed indicated that the airports were safe.

This means that $n = 500, X = \frac{375}{500} = 0.75$

Value of the z-statistic:

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$z = \frac{0.75 - 0.7}{\frac{\sqrt{0.7*0.3}}{\sqrt{350}}}$

$z = 2.44$

P-value of the test:

Probability of z being larger than 2.44, that is, a proportion larger than 0.75.

This is, looking at the z-table, 1 subtracted by the pvalue of Z = 2.44. S

Z = 2.44 has a pvalue of 0.9927

1 - 0.9927 = 0.0073

0.0073 < 0.05, which means that we reject the null hypothesis and conclude that the true proportion of interest is higher than 0.7.

8 0

3 years ago