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Anestetic [448]
3 years ago
9

please.. this is due by midnight and i’m close to tears.. from a point in a straight road, Chris and Elena ride bicycles in the

same direction. Chris rides at 10mph and Elena rides at 14 mph. In how many hours will they be at 34 mi apart?
Mathematics
1 answer:
blondinia [14]3 years ago
4 0
Chris is going 10 mph. After 9 hours, Chris has gone 90 miles. Elena is going 14 mph. After 9 hours, she has gone 126 miles. 126 miles is 36 miles more then 90 miles.

10 \times 9 = 90 \\ 14 \times 9 = 126 \\ 126 - 90 = 36
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12 of the cookies are chocolate chip. 18 divided by 3 is 6. 2 multiplied by 6 is 12.
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3 years ago
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A plant grows at a constant rate . daniel records the height of the plant each week . the unit reat is meausred in inches per we
KATRIN_1 [288]

By the consideration of <em>direct</em> proportionality, the constant of proportionality for the height of the plant is equal to 3 inches per week.

<h3>How to find a constant of proportionality in direct proportional equation</h3>

Let x and y the number of weeks and the height of the plant, respectively. Given the consideration of <em>direct</em> proportionality, the height of the plant inasmuch as the number of weeks increases. Then, the constant of proportionality (in inches per week) is found by dividing the height of the plant by the number of the respective week:

k = 18 inches /6 weeks = 15 inches /5 weeks = 12 inches/4 weeks = 3 inches/week

By the consideration of <em>direct</em> proportionality, the constant of proportionality for the height of the plant is equal to 3 inches per week.

To learn more on direct proportionality: brainly.com/question/14437120

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5 0
2 years ago
The diameter of a quarter is about 2.4 centimeters. a. What is the circumference of a quarter ? (Use 3.14 for pie) b. What is th
Korolek [52]
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5 0
4 years ago
-2(8+8x)+7x=-7x+2(x-8)
Inessa [10]

x=0 .

−2(8+8x)+7x=−7x+2(x−8)

Step 1: Simplify both sides of the equation.

−2(8+8x)+7x=−7x+2(x−8)

(−2)(8)+(−2)(8x)+7x=−7x+(2)(x)+(2)(−8)(Distribute)

−16+−16x+7x=−7x+2x+−16

(−16x+7x)+(−16)=(−7x+2x)+(−16)(Combine Like Terms)

−9x+−16=−5x+−16

−9x−16=−5x−16

Step 2: Add 5x to both sides.

−9x−16+5x=−5x−16+5x

−4x−16=−16

Step 3: Add 16 to both sides.

−4x−16+16=−16+16

−4x=0

Step 4: Divide both sides by -4.

−4x /−4 = 0 /−4

x=0


7 0
3 years ago
I
Kipish [7]

Answer: y=-3x+27

Step-by-step explanation:

7 0
3 years ago
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