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3 years ago

A car travels a steady speed and takes five hours to travel 310 miles. Work out the average speed of the car in miles per hour.

1 answer:

5 0

We have been given that a car travels a steady speed and takes five hours to travel 310 miles. We are asked to find out average speed of the car.

To find average speed of car we will divide total distance traveled by time taken in completing the distance.

$\text{Average speed of car}=\frac{310\text{ miles}}{5\text{ hours}}$

Upon dividing 310 by 5 we will get,

$\text{Average speed of car}=62\frac{\text{ miles}}{\text{ hours}}$

Therefore, average speed of car will 62 miles per hour.

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During a certain day, a worker made 81 parts. He usually does 45 parts per day. What was the percent by which he increased the n

SIZIF [17.4K]

45/81 = .55
Turn this into a percent: .55 x 100
55 percent
Hope this helps!

6 0

3 years ago

Read 2 more answers

Please help! <br> Simplify. Your answer should contain only positive exponents.

maxonik [38]

Answer:

$\frac{1}{4k^3}$

Step-by-step explanation:

It's already in a form that only ha positive exponents. Just to state it though you could rewrite it as $k*(4k^{4})^{-1}$ or $k*4^{-1}*k^{-4}$ The question asks for positive exponents though so yu don't need to do that.

You also need to know $\frac{x^a}{x^b}=x^{a-b}$ so in this case $\frac{k}{k^4}=\frac{k^1}{k^4} =k^{1-4}=k^{-3}=\frac{1}{k^3}$

so $\frac{k}{4k^4}=\frac{1}{4}*\frac{k}{k^4}=\frac{1}{4}*\frac{1}{k^3}=\frac{1}{4k^3}$

3 0

3 years ago

Round to the nearest tenth. Asanji took a trip to Mexico. Upon leaving he decided to convert all of his Pesos back into dollars.

My name is Ann [436]

He would have around 15 dollars

4 0

3 years ago

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Solve the formula Ax+By = C for A.

jok3333 [9.3K]

Answer:

$A = \frac{C - By}{x}$

Step-by-step explanation:

Given

$Ax + By = C$

Required

Solve for A

The question implies that we make A the subject of the formula.

Start by subtracting By from both sides of the equation by x

$Ax + By - By= C - By$

$Ax = C - By$

Divide both sides by x

$\frac{Ax}{x} = \frac{C - By}{x}$

$A = \frac{C - By}{x}$

<em>Solved</em>

8 0

3 years ago

What is the solution to the equation 5(x-3) = 2(x+3)?

VikaD [51]

Answer:
x = 7

General Formulas and Concepts:
Order of Operations: BPEMDAS

Step-by-Step Explanation:
Step 1: Define
5(x - 3) = 2(x + 3)

Step 2: Solve for x
1. Distribute: 5x - 15 = 2x + 6
2. Subtract 2x on both sides: 3x - 15 = 6
3. Add 15 on both sides: 3x = 21
4. Divide both sides by 3: x = 7

8 0

3 years ago