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Zolol [24]
3 years ago
10

The expression D over T can be used to find the average speed of an object that travels a distance D in time T what is a cars av

erage speed if it travels 145 miles in 2.5 hours
Mathematics
1 answer:
Mashutka [201]3 years ago
6 0
So, you basically plug the values into the formula you have been given. D divided by T gives you the average speed.
We know the distance D is 145 miles and the Time T is 2.5 hours.

So, 145/2.5=58

Therefore, the cars average speed was 58 miles / hour
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Sidaanth kept a chart of his savings. Which point represents this relationship? Sidaanth’s Savings Week Savings 1 $7.00 2 $14.00
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Answer:

c

Step-by-step explanation:

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3 years ago
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Write the rule for the linear function. Remember a function rule is written using f(x)
Marina CMI [18]

Answer:

The rule for the linear function will be:

f(x) = -2x+5

Step-by-step explanation:

We know that linear function can be represented using the slope-intercept formula

y = mx+b

where m is the slope and b is the y-intercept

Given the function is linear

Taking two points from the table to determine the slope

  • (1, 3)
  • (2, 1)

\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}

\left(x_1,\:y_1\right)=\left(1,\:3\right),\:\left(x_2,\:y_2\right)=\left(2,\:1\right)

m=\frac{1-3}{2-1}

m=-2

Using the point-slope form of the line equation

y-y_1=m\left(x-x_1\right)

where m is the slope of the line and (x₁, y₁) is the point

substituting the values m = -2 and the point (1, 3)

y-y_1=m\left(x-x_1\right)

y - 3 = -2 (x-1)

y-3 = -2x+2

adding 3 to both sides

y-3+3 = -2x+2+3

y = -2x+5

or

f(x) = -2x+5

Therefore, the rule for the linear function will be:

f(x) = -2x+5

4 0
3 years ago
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Since they’re both in standard form and they both say that y is equal to something, you just have to set them up with one another
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Subtract 2x
-10=2x-8
Add 8
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Divide by 2
-1=x
x=-1
Check it by inserting it
2(-1)-10=4(-1)-8
-2-10=-4-8
-12=-12
So x=-1 is the answer
3 0
3 years ago
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It takes wayne 3.2 units 
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