All categories

3 years ago

Can you help me with this one

Mathematics

2 answers:

Vsevolod [243]3 years ago

6 0

Answer:

For number 2 It would be 10x+12=29

For number 3 Try -37 Because i'm ending up with -36

Step-by-step explanation:

If the 2 was outside of the parenthesis you would multiply both numbers in the parenthesis

Kitty [74]3 years ago

4 0

It c and b it won't let me write a lot :(

You might be interested in

F(x)=-x+9 That’s it I just need someone to help me with my math homework

Vilka [71]

X intercept is (9,0)
Y intercept is (0,9)
Pls mark me as brainliest

7 0

3 years ago

The use of air bags in cars reduces the force of impact by a factor of 110.(The resulting force is only as great.) What can be s

Vadim26 [7]

Answer:

C. It increases by a factor of 110

Step-by-step explanation:

For Plato

5 0

3 years ago

3. B С A D E How many rays intersect at point o?

swat32

Oneeeeeeeeeeeeeeeeeee

8 0

3 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

Please help with angle addition

KonstantinChe [14]

Answer:

m∠1 = 89°

Step-by-step explanation:

Since m∠2 is a part of ∠GFH, he can do the following.

∠GFH - m∠2 = m∠1

133° - 44° = 89°

4 0

2 years ago