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4 years ago

The distance, y, in miles, traveled by a car in a certain amount of time, x, in hours, is shown in the graph below:

Mathematics

1 answer:

Sunny_sXe [5.5K]4 years ago

3 0

Answer:

It travels for 1 hour, then stops for 1 hour, and finally travels again for 3 hours.

Step-by-step explanation:

Distance changes over the first hour of travel, but then doesn't change for one hour, and then it continues on for the next three hours

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Just need help with B and C 30 POINTS

saw5 [17]

Answer:

b) 6/7

c) 14

Step-by-step explanation:

b) Scale Factor = Red/(Red+Blue) = 8/(8+6) = 8/14 = 6/7.

c) x = 8+6 = 14.

EXTRA TIP: If you aren't sure, think about wheter these triangles are isosceles(from the diagram). Hope this helps!

4 0

2 years ago

1) A projectile is thrown upward so that its distance above the ground after t seconds is

leonid [27]

Answer:

After 22 seconds the projectile reach its maximum height of 4,840 units

Step-by-step explanation:

we have

$h(t)=-10t^{2}+440t$

This is a vertical parabola downward (because the leading coefficient is negative)

The vertex is a maximum

Find out the coordinates of the vertex

Convert the quadratic equation in vertex form

Factor -10

$h(t)=-10(t^{2}-44t)$

Complete the square

$h(t)=-10(t^{2}-44t+22^2)+(10)(22^2)$

$h(t)=-10(t^{2}-44t+22^2)+4,840$

Rewrite as perfect squares

$h(t)=-10(t-22)^{2}+4,840$

The vertex is the point (22,4,840)

therefore

After 22 seconds the projectile reach its maximum height of 4,840 units

4 0

3 years ago

A rectangle is 36 inches x 48 inches. what is the perimeter.? what is its area.?

olga nikolaevna [1]

For area, just multiply the length x width
So therefore, multiply 36 inches x 48 inches and there you have it.

Now for the perimeter, it is a little different
You'd have to add the sides up together to get your answer for the perimeter.
So, 36 in + 36 in + 48 in + 48 in = answer

3 0

3 years ago

Read 2 more answers

Selene's checking account balance was -$33, and then she withdrew $42 more. What is her checking account balance after the withd

Rainbow [258]

Answer:

-75

Step-by-step explanation:

WIthdrew = Negative

-33 - 42 = -75

7 0

3 years ago