C=300+1200x-100x. Find x if the total cost is 3,000
3,000 = 300 + 1200x -100x
3000 = 300 + 1100x
2700 = 1100x
2700÷1100=x
x=27/11
x = 2 5/11 Round to 3

5 0

3 years ago

Johnny answered 40 questions correctly on his 60 question test. What percent of questions did Johnny answer correctly?

Rzqust [24]

Answer:

66.6%

Step-by-step explanation:

40/60=4/6=2/3

2/3=66.6

4 0

3 years ago

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Tamika wants to double the volume of a square pyramid. What should she do?

ella [17]

To efficiently double the volume of a square pyramid, you need to double the height of the pyramid.

<span>V = (1/3)Ah where A is the area of the base. If you double the height and leave A unchanged, the volume will also be doubled (replace h with 2h in the formula).</span>

7 0

3 years ago

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A scientist measure change in the temperature of chemical solution at the start of the experiment , the solutions is at temperat

zhannawk [14.2K]

Answer:

The temperature of the chemical solution after t hours is $-14.96-2.9t\;^{\circ}C$