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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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Mrac [35]

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4 0
3 years ago
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<img src="https://tex.z-dn.net/?f=%20%5Cbf%20%5Chuge%20x%20%7B%7D%5E%7B2%7D%20%20%2B%205%20%3D%206" id="TexFormula1" title=" \bf
ira [324]

<u>Given</u> :

  • x² + 5 = 6

<u>Subtract 5 from each side</u> :

  • x² + 5 - 5 = 6 - 5
  • x² = 1

<u>Take the root on each side</u> :

  • √x² = √1
  • x = ±1

<u>Hence, the values of x are</u> :

  • \fbox {x = 1}
  • \fbox {x = -1}
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1 year ago
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