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3 years ago

Select the correct answer. Which expression is equivalent to , if x > 0? A. B. C. D.

Mathematics

1 answer:

zhenek [66]3 years ago

7 0

Answer:

Step-by-step explanation:

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an airplane travels 600 miles against the wind in 5 hours, and makes the return trip with the same wind in 2 hours. find the rat

vesna_86 [32]

Answer:

The speed of wind is 75 miles / hour

Step-by-step explanation:

Let's assume

speed of airplane is x miles /hour

speed of wind is y miles /hour

An airplane travels 600 miles against the wind in 4 hours

against wind means resultant speed will be less

so, speed =x-y

total distance traveled in 4 hour is

and this has to be equal to 600

Divide both sides by 4

makes the return trip with then same wind in 2 hours

with wind means resultant speed will be more

so, speed =x+y

total distance traveled in 2 hour is

and this has to be equal to 600

Divide both sides by 2

So, we get system of equations

now, we can solve it by adding both equations

now, we can solve for x

now, we can find y by plugging x into any one equation

4 0

1 year ago

The sum of two consecutive odd integers is 244. what is the smaller integer? 119 125 123 121

Alexus [3.1K]

Solve is in the picture

Good luck :)

7 0

3 years ago

Read 2 more answers

What is the area of the rectangle below?

egoroff_w [7]

Answer:

52 if im wrong sorry :(

Step-by-step explanation:

8 0

2 years ago

on a certain hot Summer's Day 613 people use the public swimming pool the daily prices are $1.75 for children $2.25 for adults t

Elodia [21]

389 children and 224 adults were at the pool that day.

Step-by-step explanation:

Cost of one child ticket = $1.75

Cost of one adult ticket = $2.25

Total people = 613

Total receipts worth = $1184.75

Let,

Number of children = x

Number of adults = y

According to given statement;

x+y=613 Eqn 1

1.75x+2.25y=1184.75 Eqn 2

Multiplying Eqn 1 by 1.75

$1.75(x+y=613)\\1.75x+1.75y=1072.75\ \ \ Eqn\ 3$

Subtracting Eqn 3 from Eqn 2

$(1.75x+2.25y)-(1.75x+1.75y)=1184.75-1072.75\\1.75x+2.25y-1.75x-1.75y=112.00\\0.50y=112.00$

Dividing both sides by 0.50

$\frac{0.50y}{0.50}=\frac{112.00}{0.50}\\y=224$

Putting y=224 in Eqn 1

$x+224=613\\x=613-224\\x=389\\$

389 children and 224 adults were at the pool that day.

Keywords: linear equation, subtraction

Learn more about linear equations at:

#LearnwithBrainly

6 0

3 years ago

How many meters are equal to 5,253 centimeters?

Arte-miy333 [17]

Answer:

52,530 centimeters

Step-by-step explanation:

<u>Step 1: Convert Meters into Centimeters</u>

1 meter = 100 centimeter

5253 * 100 = 52,530 centimeters

Answer: 52,530 centimeters

3 0

3 years ago