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SashulF [63]
2 years ago
6

(HELP ME!!!!!!!!!!!!)

Mathematics
1 answer:
Kobotan [32]2 years ago
5 0

The car is driving at 70 miles per hour which is above the speed limit on the highway

<h3 /><h3>Linear equation</h3>

A linear equation is in the form:

y = mx + b

where y, x are variables, m is the slope of the line and m is the y intercept.

Let y represent the distance in miles and x represent the time in hours. Hence:

  • Using the points (0, 0) and (3, 200)

Slope = \frac{y_2-y_1}{x_2-x_1} =\frac{200-0}{3-0} =66.7

Bob speed limit is 66.7 miles per hour

Given a car by y = 70x. The car is driving at 70 miles per hour which is above the speed limit on the highway

Find out more on linear equation at: brainly.com/question/14323743

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Answer:

There are 3 adults in the family.

Step-by-step explanation:

The equations 8x + 4y = 32 and 16x + 12y = 72 represent the cost of lunch and dinner for a family in which x is the number of adults and y is the number of children.

We have to find the number of adults or the value of x by solving these equations.

equations are 8x + 4y = 32 -------(1)

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Now we will multiply equation 1 by 3 and subtract it by equation 2.

(16x + 12y) -3(8x + 4y) = 72 - 96

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