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soldier1979 [14.2K]
3 years ago
7

Using the formula r=d/t, where d is the distance in miles, r is the rate, and t is the time in hours, at which rate must you tra

vel to cover 212.5 miles in 2.5 hours?
Mathematics
2 answers:
Romashka [77]3 years ago
8 0

Answer:

85 miles per hour.

Step-by-step explanation:

We have been given a formula r=\frac{d}{t}, d is the distance in miles, r is the rate, and t is the time in hours.

To find the rate, we will substitute our given values in above formula as:

r=\frac{\text{212.5 miles}}{\text{2.5 hours}}

r=\frac{\text{85 miles}}{\text{ hour}}

Therefore, our required rate is 85 miles per hour.

Shtirlitz [24]3 years ago
6 0
R=d/t = 212.5/2.5 = 85
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How do I graph the linear equation y=-1/2x + 4
shtirl [24]

Answer:

The Two points for the line  y =\frac{-1}{2}x+4 are

point A( x₁ , y₁) ≡ ( 0 , 4)

point B( x₂ , y₂) ≡ (8 , 0)  

The Graph is attached below.

Step-by-step explanation:

Given:

y =\frac{-1}{2}x+4........... equation of a line  Given

Let the points be point A, and point B  

To Find:

point A( x₁ , y₁) ≡  ?

point B( x₂ , y₂) ≡ ?

Solution:

For Drawing a graph we require minimum two points but we will have here.

For point A( x₁ , y₁)

Put x = 0 in the given equation we get

y =\frac{-1}{2}0+4\\\\y=4

∴ point A( x₁ , y₁) ≡ ( 0 , 4)

For point B( x₂ , y₂)

Put y= 0 in the given equation we get

0 =\frac{-1}{2}x+4\\\\x=8

∴ point B( x₂ , y₂)  ≡ (8 , 0)

Therefore,

The  points for the line  y =\frac{-1}{2}x+4 are

point A( x₁ , y₁) ≡ ( 0 , 4) (blue color point on the graph)

point B( x₂ , y₂) ≡ (8 , 0) (green color point on the graph)

The Graph is attached below..

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Answer:

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Step-by-step explanation:

:-)

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Step-by-step explanation:

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