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3 years ago

the side length of a square can be expressed as 2x+3. If the area of the square is 121 square meters, what is the value of x?

Mathematics

1 answer:

lyudmila [28]3 years ago

6 0

Answer:

x=4

Step-by-step explanation:

(2x+3)^2=121

2x+3=square root of 121

2x+3=11

2x=11-3

2x=8

x=4

(in a square all sides are equal therefore area =length ×width where length and width=2x+3)

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3 years ago

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rodikova [14]

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A) $\$ 6.5\timesx$ is the expression to represent total amount of money she earns babysitting for Smith family.

B) $\$45.5$ she will earn for Smith family for 7 hours

C) It would take $12 \ hrs$ for Margie to make $\$78$ when babysitting for the Smith family

Step-by-step explanation:

Given.

Mr. and Mrs. Smith pay Margie $\$6.50$ an hour to babysit their son, Shea.

Mr. and Mrs. Jones pay Margie $8 an hour to babysit their children, Sarah, Susan, and Dawn.

Let x be number of hours.

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No of hour Margie has done babysitting for Smith family $x=\frac{\$78}{\$6.5}=12 \ hrs$

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