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8 months ago

At an important meet, rosalba won the 200 meters in 26.39 seconds. Rosalba ran at an average rate of?

Mathematics

1 answer:

Andre45 [30]8 months ago

7 0

We have to find the average rate of meters per second (also known as average speed).

We can calculate it as the quotient between the distance and the time:

$v=\frac{d}{t}=\frac{200\text{ m}}{26.39\text{ s}}\approx7.58\text{ m\textbackslash s}$

Answer: the average rate is approximately 7.58 m/s.

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9р - Зр equivalent expression

Vesnalui [34]

Answer:

Step-by-step explanation:

9p - 3p needs to have the like terms combined. 9 - 3 is 6, and since you have to keep the p, the answer is 6p.

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2 years ago

Three different. challenging math equations that each equal 100

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10 x 10 x 1 x 1 x 1 x 1

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2 years ago

Jmap

Alchen [17]

To determine whether a solution a set of a system of linear inequalities is right, you simply plug back into the equation to check your work. If the solution equals and is mathematically correct, then that's the answer. For Example, use the equation,

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Let's say you got an answer of x = 4. Plug it back into the equation
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2 years ago

Which of the following is the equation of a line that is perpendicular to 6x+4y=3

VikaD [51]

STEP 1
Make it slope intercept form (y=mx+b)
Y= -6/4x + 3
STEP 2
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3 years ago

A ball is projected up into the air from the surface of a platform to the ground below. The height of the ball above the ground,

mezya [45]

Answer:

112 ft
3 - 7 seconds interval

Step-by-step explanation:

Given function:

f(t) = -16t² + 96t + 112

The height of the platform is the y-intercept, when t = 0:

f(0) = - 16*0 + 96*0 + 112 = 112 ft

The ball's height is decreasing once it reaches the maximum, which is at vertex.

The vertex is at x = -b/2a:

t = - 96/ - 32 = 3

The ball hits the ground when f(t) = 0:

- 16t² + 96t + 112 = 0
t² - 6t - 7 = 0
(t - 7)(t + 1) = 0
t = 7 (positive root)

The interval is between 3 seconds and 7 seconds

8 0

1 year ago