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max2010maxim [7]
3 years ago
13

2. Solve the quadratic by taking square roots. Write your answer with no spaces as x=a,-a where a and -a are the values you foun

d when solving. Round to the nearest tenth. 2x secondpower - 9 = 121​
Mathematics
1 answer:
natulia [17]3 years ago
6 0

Answer:

x=√65 and x=-√65

Step-by-step explanation:

Givn the expression 2x^2 - 9 = 121

Add 9 to both sides

2x^2 - 9 + 9 = 121 + 9

2x^2 = 130

Divide both sides b 2

2x^2/2 = 130/2

x^2 = 65

x = ±√65

x=√65 and x=-√65

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sattari [20]

Answer: $300

Step-by-step explanation:

Mr. Calvin earned  \$2400

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\dfrac{1}{6}\ \text{on other expenses i.e.}\\\\\Rightarrow \dfrac{1}{6}\times 2400=\$400

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So, he saved $300 after expenses

7 0
3 years ago
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3 years ago
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5 0
3 years ago
Weights of the vegetables in a field are normally distributed. From a sample Carl Cornfield determines the mean weight of a box
pantera1 [17]
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7 0
4 years ago
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