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Taya2010 [7]
3 years ago
13

How to solve 2y+(-2-7y)=4

Mathematics
1 answer:
AleksandrR [38]3 years ago
4 0

Answer:

y = -6/5

Step-by-step explanation:

Remove parentheses

2y - 2 - 7y = 4

group like terms

2y - 7y - 2 = 4

add similar elements

-5y - 2 = 4

add 2 to both sides

-5y - 2 + 2 = 4 + 2

simplify

-5y = 6

divide both sides by -5

-5y ÷ -5 and 6 ÷ -5

simplify

y = -6/5

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\frac{-1}{3}a + \frac{5}{6} +2\frac{1}{6} -\frac{5}{6}a\\\\\frac{-1}{3}a + \frac{5}{6} +\frac{13}{6} -\frac{5}{6}a\\\\\frac{-2a + 5 + 13-5a}{6}\\\\\frac{-7a +18}{6}

3 0
2 years ago
Given y=(2x+3)2, choose the standard form of the given quadratic equation
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Mr.Ward runs a lot. He ran 45 minutes each day, 5 days each week , for 16 weeks . In that time, he ran 450 miles. What was his a
Savatey [412]

Answer:

7.5 miles per hour.

Step-by-step explanation:

We have been given that Mr. Ward runs a lot. He ran 45 minutes each day, 5 days each week, for 16 weeks.

First of all, we will find time for that Mr. Ward ran in 16 weeks.

We will multiply 5 by 16 to find number of days for that Mr. Ward ran and then we will multiply the result by 45 minutes to find the time.

\text{Time for that Mr. Ward ran in 16 weeks}=16\times 5\times 45\text{ minutes}

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Now, we will divide 3600 minutes by 60 minutes to convert time into hours as:

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Now, we will divide 450 miles by 60 hours to find Mr. Ward's average speed as:

\text{Mr. Ward's average speed}=\frac{450\text{ miles}}{\text{60 hours}}

\text{Mr. Ward's average speed}=\frac{7.5\text{ miles}}{\text{ Hour}}

Therefore, Mr. Ward's average speed in 7.5 miles per hour.

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