All categories

3 years ago

Help please and thanks will mark as brainliest

Mathematics

1 answer:

Paraphin [41]3 years ago

8 0

11)

3x = 180
x = 60

12)
6x + 18 = 180
6x = 162
x = 27

You might be interested in

I NEED HILP PLS HOW IS THIS THE ANSWER....

Citrus2011 [14]

Answer:

The answer is correct, here's why:

Step-by-step explanation:

Dr. Silva's tank holds 15 $\frac{7}{8}$ gallons of gas.

She added 11.55 gallons to her tank to fill it up.

This means she must have had 5 $\frac{13}{40}$ gallons to start with because 5 $\frac{7}{8}$ - 11.55 = 5 $\frac{13}{40}$

5 0

2 years ago

54 1/4% equals _____

tresset_1 [31]

The answer to the question

8 0

3 years ago

Based on the information from Harper's Index, 37 out of 100 adult Americans who did not attend college believe in extraterrestri

vazorg [7]

Answer: Yes, this indicate the proportion of adult americans that attended college and believe in extraterrestrials is higher than the proportion that did not attend college.

Step-by-step explanation:

Since we have given that

Hypothesis:

$H_0:p_1=p_2\\\\H_a:p_1>p_2$

n₁ = 100

x₁ = 37

So, $p_1=\dfrac{x_1}{n_1}=\dfrac{37}{100}=0.37$

n₂ = 100

x₂ =47

So, $p_2=\dfrac{47}{100}=0.47$

At 0.01 level of significance, z = 2.33

So, test statistic value would be

$z=\dfrac{p_1-p_2}{\sqrt{\dfrac{p_1(1-p_1)}{n_1}+\dfrac{p_2(1-p_2)}{n_2}}}\\\\z=\dfrac{0.37-0.47}{\sqrt{\dfrac{0.37\times 0.63}{100}+\dfrac{0.47\times 0.53}{100}}}\\\\z=-1.44$

Since, 2.33>-1.44

Hence, we will reject the null hypothesis.

Therefore, Yes, this indicate the proportion of adult americans that attended college and believe in extraterrestrials is higher than the proportion that did not attend college

4 0

3 years ago

What is the center of the data number of laps around a track?

notka56 [123]

Answer:

The real answer is

Step-by-step explanation:

2,i just took the test

6 0

4 years ago

4. SLOPE need help ASAP thx

ale4655 [162]

I believe the slope is 2/5 and the y intercept is -1!!

6 0

3 years ago