All categories

3 years ago

When simplified, which of the following expressions has a coefficient of -2?

Mathematics

2 answers:

Sever21 [200]3 years ago

5 0

Answer: The correct answer would be the third one; 4y-6y

sweet [91]3 years ago

4 0

Answer:

The correct answer would be the third one; 4y-6y

Step-by-step explanation:

The first answer, if simplified, the answer would be 10y. Which isn't the answer you are looking for.

The second answer, also has the answer of 10y, which means that isn't the one.

The third answer, when simplified, has the answer of -2y. Which, of course, would be your answer.

The fourth answer, would be -10y.

Therefor, the correct answer would be the third one.

Hope this helps!

You might be interested in

If three people share 1 / 2 pound of peanuts how much will each person have?

zhenek [66]

About .17 pounds. ( just keep the peanuts to yourself) lol

7 0

3 years ago

Kate borrowed $400 from her friend. She will repay this amount plus 3 percent simple interest after one year. What is the total

bagirrra123 [75]

$412 i am pretty sure that is right if not i'm sorry but good luck :)

7 0

3 years ago

Read 2 more answers

One yard company charges $10x + $50 a month to mow and edge a lawn. A second company charges $8x + $60 a month to mow and edge a

wolverine [178]

<span>Set the two equations equal to each other and solve for x
10x +50 = 8x +60
-50 -50
-----------------
10x = 8x + 10

10x = 8x + 10
-8x -8x
---------------
2x = 10 2x = 10

divide by 2 on both sides x=5 five additional services are needed for the two companies prices to be equal </span>

8 0

3 years ago

Read 2 more answers

Leroy is 22 years old. His car averages 31 miles

vodka [1.7K]

Answer:

he will be 25

Step-by-step explanation:

36 monthly payments left/12 payments a year = 3 years. 22 + 3 = 25

4 0

3 years ago

Canine hip dysplasia is a degenerative disease that causes pain in many dogs. Sometimes advanced warning signs appear in puppies

nordsb [41]

<h2>Answer with explanation:</h2>

Formula for plus-four confidence interval :

$\hat{p}\pm z^* \sqrt\dfrac{\hat{p}(1-\hat{p})}{n+4}}$

, where n= Sample size.

$\hat{p}$ = Sample proportion and $\hat{p}=\dfrac{x+2}{n+4}$

z* = Critical z-value.

Let p be the proportion of puppies area found with early hip dysplasia.

As per given , we have

n= 42

$\hat{p}=\dfrac{5+2}{42+4}=0.1522$

Since confidence interval is not given , so we assume it as 95% .

z-critical value for 95% confidence is 1.96.

Then, the required confidence interval will become :

$0.1522\pm (1.96)\sqrt{\dfrac{0.1522(1-0.1522)}{42+4}}\\\\ 0.152\pm (1.96)\sqrt{0.002805112173}\\\\ 0.152\pm 0.1038\\\\ =(0.1522- 0.1038 ,\ 0.152+ 0.1038)\approx(0.0484,\ 0.256)$

Hence, the plus four confidence interval for p = (0.0484, 0.256)

Interpretation: We are 95% sure that the true proportion of puppies area found with early hip dysplasia lies in (0.0484, 0.256).

7 0

3 years ago