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Inga [223]
3 years ago
11

Which of these is the algebraic expression for "3 times the sum of 2 and y?"

Mathematics
2 answers:
max2010maxim [7]3 years ago
7 0

Answer:

the answer is 3(2+y)

Step-by-step explanation:

i commented that first it would not let me answer

]

tatyana61 [14]3 years ago
7 0

Answer:

3(2+y)

Step-by-step explanation:

Sum is addition, and you need to multiply 3 by 2 and 3 by y. It has to be a because it is the only one that does 3(2+y)

B isn’t multiplying it by y

C doesn’t multiply 3 by 2

D doesn’t multiply 3 by y

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Help!!! Make brainliest
olga_2 [115]

Answer:

b=(2a-1)/(3a-1)

Step-by-step explanation:

a=(b-1)/(3b-2)

3ab-2a=b-1

3ab-b=2a-1

b(3a-1)=2a-1

b=(2a-1)/(3a-1)

5 0
3 years ago
What is 33 percent of 400
Eduardwww [97]
<h2>QUESTION</h2>

What is 33% of 400?

<h2>ANSWER AND EXPLANATION</h2>

To find the percent of a number, you have to change the percent into a decimal or a fraction and multiply by the number.

<h3>DECIMAL</h3>

To change a percent into a decimal, remove the percent sign and move the decimal point 2 places to the left.

33 \% \rightarrow 0.33

Now that you have your decimal, multiply by 400:

0.33 \times 400 = 132

ANSWER = 132

<h3>FRACTION</h3>

To change a percent into a fraction, make the percent number as the numerator(top number) and 100 as the denominator(bottom number) since fractions are out of 100.

33 \% \rightarrow \frac{33}{100}

Now that you have your fraction, multiply by 400:

\frac{33}{100} \times 400 = \frac{13200}{100} \rightarrow 132

ANSWER = 132

<em>If you have any questions, feel free to ask in the comments! :)</em>

4 0
3 years ago
Read 2 more answers
What percent of 8 is 14
seraphim [82]

Answer:

57.14

Step-by-step explanation:

8/14 =x/100

cross multiply

800= 14x

x=57.1428

7 0
3 years ago
Read 2 more answers
Samantha works at a nursery, where she pots plants. it takes her 1 1/2 hours to pot 12 plants.
nignag [31]

Answer:

She could plant 9 plants.

Step-by-step explanation:

1 1/2 hours = 90 minutes, so 12 plants per 90 minutes. Which would mean 6 plants per 45 minutes. So in between 45 and 90 minutes (1 hour), and in between 6 and 12 plants (9).

Sorry if you didn't understand, I'm bad at explaining.

4 0
2 years ago
According to USA​ Today, customers are not settling for automobiles straight off the production lines. As an​ example, those who
MrMuchimi

Answer:  (24980.25,\ 25419.75)

Step-by-step explanation:

The confidence interval for population mean is given by :-

\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}

Given : Sample size : n= 179 , which is a large sample , so we apply z-test .

Sample mean : \overline{x}=20200+5000=25200

Standard deviation : \sigma= 1500

Significance level : \alpha=1-0.95=0.05

Critical value : z_{\alpha/2}=1.96

Now, a confidence interval at the 95% level of confidence will be :-

25200\pm(1.96)\dfrac{1500}{\sqrt{179}}\\\\\approx25200\pm219.75\\\\=(25200-219.75,\ 25200+219.75)\\\\=(24980.25,\ 25419.75)

8 0
3 years ago
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