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patriot [66]
3 years ago
9

Olivia earns $8.50 per hour for babysitting her brother. She also earns a weekly bonus of $12 if she helps with

Mathematics
2 answers:
Amiraneli [1.4K]3 years ago
8 0

Answer

a

Step-by-step explanation:

kodGreya [7K]3 years ago
8 0

Answer:

Olivia babysat for a total of 15 hours.

Step-by-step explanation:

8.50(h) + 12 = 139.50

In order to get a direct result of the hours she

worked, we have to subtract 12 on both sides:

8.50(h) + 12 - 12 = 139.50 - 12

In order to fine the value of time she spent, we have to divide the amount of money she got on both sides:

<u>8.50(h)</u> = <u>127.5</u>

 8.50   =  8.50

    h     =     15

Therefore, Olivia babysat for a total of 15 hours.

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If y varies directly with x, and y = 2 when x = −4, what is the value of y when x = 20
Klio2033 [76]

Answer:

y = - 10

Step-by-step explanation:

Given that y varies directly with x then the equation relating them is

y = kx ← k is the constant of variation

To find k use the condition y = 2 when x = - 4, that is

2 = - 4k ( divide both sides by - 4 )

= k, that is

k = -  

y = -  x ← equation of variation

When x = 20, then

y = -  × 20 = - 10

3 0
3 years ago
Raymond has taken a position as the navigator on a speed boat racing team. The team entered a race that starts at Daytona Beach,
erik [133]
Using the rules of cosines, the <span>measure of the turn between the second and third legs of the race</span> is given by

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4 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=%20%5Csqrt%5B3%5D%7Bx%20-%201%7D%20" id="TexFormula1" title=" \sqrt[3]{x - 1} " alt=" \sqrt[3]
shusha [124]
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7 0
3 years ago
A bicycle tire has a radius of 13 1/4 inches. How far will the bicycle travel in 40 rotations of the tire? Round to the nearest
Sergeu [11.5K]

Answer:

the bicycle will travel 277.5 feet or 3,330.1 inches.

Step-by-step explanation:

the circumference(distance around a tire) is calculated by multiplying a circles diameter by pi. the diameter is twice the length of the radius.

so if you multiply 13 1/4 by 2 you get 26 1.5 if you multiply that by pi than you get the circumference. then multiply this by 40 to get the inches traveled and divide that by 12 to get the number of feet traveled.

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3 years ago
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babunello [35]
That don’t make sense
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2 years ago
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