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4 years ago

Brian ran 414 miles in 34 of an hour. How fast was Brian running? 3316 mph 312 mph 5 mph 523 mph

Mathematics

2 answers:

alina1380 [7]4 years ago

5 0

Answer: Fourth option is correct.

Step-by-step explanation:

Since we have given that

Distance traveled by Brian = $4\frac{1}{4}\ miles=\frac{17}{4}\ miles$

Time taken by him = $\frac{3}{4}$ of an hour

So, Speed at which Brian is running fast is given by

$Speed=\dfrac{Distance}{Time}\\\\\\Speed=\dfrac{\dfrac{17}{4}}{\dfrac{3}{4}}\\\\\\Speed=\dfrac{17}{3}\\\\\\Speed=5\dfrac{2}{3}\ mph$

Hence, Brian was running fast at $5\dfrac{2}{3}\ mph$

Therefore, Fourth option is correct.

hammer [34]4 years ago

3 0

Answer:

he means 5 2/3

Step-by-step explanation:

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A rock falls off a balcony. It’s height(in feet)is given by the formula f(x)= -16t^2+12.5t+150, where t is measured in seconds.

ELEN [110]

Answer: $3.47\ seconds$

Step-by-step explanation:

Given the following function:

$f(x)= -16t^2+12.5t+150$

You need to follow these steps in order to solve the exercise:

1. Substitute $f(x)=0$ :

$0= -16t^2+12.5t+150$

2. Now you need to apply the Quadratic formula. This is:

$x=t=\frac{-b\±\sqrt{b^2-4ac} }{2a}$

In this case, you can identify that:

$a=-16\\b=12.5\\c=150$

Then, you can substitute these values into the formula:

$t=\frac{-12.5\±\sqrt{(12.5)^2-4(-16)(150)}}{2(-16)}$

3. Evaluating, you get:

$t_1=3.47\\\\t_2=-2.69$

4. You must choose the positive value. Then:

$t=3.47\ seconds$

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4 years ago

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Tems11 [23]

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3 years ago

Mario made 6 snowballs. Jordan made 4 snowballs. How many more snowballs did Mario make than Jordan.

ozzi

Answer:

Mario made 2 more snowballs than Jordan

Step-by-step explanation:

To find you're answer, subtract the amount of snowballs Mario has (6) to the snowballs Jordan has (4).

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3 years ago

A. $15.00 B. $20.00 C. $22.00 D. $25.00

Makovka662 [10]

Hey!~

To get the answer all you would need to do is divide 589/31=19.
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Hope this helps and have a great day!

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Read 2 more answers

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vova2212 [387]

Answer:

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Step-by-step explanation:

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3 years ago