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rodikova [14]
3 years ago
7

Zack used these steps to solve this equation: Three-fourths y + 5 = negative three-fourths y minus 9. Step 1: StartFraction 6 Ov

er 4 EndFraction y + 5 = negative 9. Step 2: StartFraction 6 Over 4 EndFraction y = negative 14. Step 3: (StartFraction 6 Over 4 EndFraction) StartFraction 6 Over 4 EndFraction y = negative 14 (StartFraction 6 Over 4 EndFraction). Step 4: y = negative 21. When Zack checked his solution, it didn’t work. What was his mistake? In step 1, he should have used the multiplication property of equality. In step 2, he should have a constant of – 4 on the right side. In step 3, he should have divided both sides by StartFraction 6 Over 4 Endfraction. In step 4, the answer should be positive.
Mathematics
2 answers:
frez [133]3 years ago
5 0

Answer:

C

Step-by-step explanation:

ur welcome

Darya [45]3 years ago
4 0

Answer:

C

Step-by-step explanation:

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A candidate took a phone poll of 110 people. Of the 110 people polled, 87 said they would vote for the other person. There are 9
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Option B

7569 number of people are going to vote for the other candidate

<em><u>Solution:</u></em>

Given that candidate took a phone poll of 110 people

Of the 110 people polled, 87 said they would vote for the other person

There are 9570 people in the district

You can set up this problem like a proportion

Let "x" be the number of people who would vote for the other candidate

\frac{87}{110} = \frac{x}{9570}

To solve proportions, you cross-multiply. This means you multiply the numerator by the other denominator, and the denominator by the other numerator

87 \times 9570 = 110 \times x

832590 = 110x

x = 7569

Thus 7569 number of people are going to vote for the other candidate

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4 years ago
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3 years ago
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