1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Svetradugi [14.3K]
3 years ago
13

I need to know the answer quick

Mathematics
1 answer:
Paha777 [63]3 years ago
3 0

Answer:

v = 13

Step-by-step explanation:

Truly hope I helped fast enough:).

You might be interested in
A pilot can travel 450 miles with the wind in the same amount of time as 360 miles against the wind. Find the speed of the wind
Lunna [17]

Given:

A pilot can travel 450 miles with the wind in the same amount of time as 360 miles against the wind.

Pilot's speed in still air is 315 miles per hour.

To find:

The speed of the wind.

Solution:

Let the speed of wind be x miles per hour.

Speed with wind = 315+x miles per hour

Speed against wind = 315-x miles per hour

We know that,

Time=\dfrac{Distance}{Speed}

According to the question,

\dfrac{450}{315+x}=\dfrac{360}{315-x}

Divide both sides by 90.

\dfrac{5}{315+x}=\dfrac{4}{315-x}

By cross multiplication, we get

5(315-x)=4(315+x)

5(315)-5x=4(315)+4x

5(315)-4(315)=4x+5x

(5-4)315=9x

Divide both sides by 9.

\dfrac{(1)315}{9}=x

35=x

Therefore, the speed of wind is 35 miles per hour.

4 0
3 years ago
From the definition of absolute value, 3|x| = when x≥0 and 3|x| = when x<0.
lara31 [8.8K]

Answer:

1) 3|x|=[0; infinity). there is no infinity sign lol

2) 3|x|= (0; infinity)

3 0
3 years ago
What is meant by a system of linear equations?
photoshop1234 [79]
It’s a grouping of linear(straight line)equations that deal with the same variables. Hope that helped?
7 0
2 years ago
A student had 500 milliliters of water in a water bottle. She drank 25% of the water before soccer practice. After practice, she
marta [7]

A student had 500 milliliters of water in a water bottle. She drank 25% of the water before soccer practice. After practice, she drank 1/3 of the remaining water.

​How much water, in milliliters, does the student have left in the bottle?

Answer:

the amount of water the student have left in the bottle is 250 milliliters

Step-by-step explanation:

A student had 500 milliliters of water in a water bottle. She drank 25% of the water before soccer practice. After practice, she drank 1/3 of the remaining water.

​How much water, in milliliters, does the student have left in the bottle?

Before the soccer practice, she drank 25 % of the water

25% of the water = 25% of 500

                             = 25% × 500

                              =\frac{25}{100} ×  500

At the right hand-side of the equation, the two zeros will cancel-out the other two zeros, hence;

                                = 25 × 5

                                 =125

25% of the water = 125 milliliters

From the question, it was said that drank 25% of the water before soccer, this implies that she drank 125 milliliters from the water bottles.

If she drank 125 milliliters of  from a 500 milliliters water contain in the water bottle, then the amount of water left will be 500 ml - 125 ml = 375 ml

This implies that before the soccer practice she had 375 milliliters of water left in the water bottle.

After the practice, she drank 1/3 of the remaining water, which means after the practice she drank 1/3 of 375

1/3 of 375 = \frac{1}{3} × 375 = \frac{375}{3} = 125

After the practice she drank 125 milliliters of water from her 375 milliliters water.

The amount of water she have left after the practice will be;

375 milliliters - 125 milliliters = 250 milliliters

Therefore, the amount of water the student have left in the bottle is 250 milliliters

8 0
3 years ago
Find the surface area plz
vladimir1956 [14]
Hi again! ;)

If we want to find the surface area of a cube, we need to find the area of one surface first, and then multiply that by 9, since there are 9 sides/surfaces on a cube.

Since each side of a square is the same, we first find the area of one surface:

9 × 9 = 81

Then, to find the surface area, we multiply 81 by 6:

81 × 6 = 486

The surface area is
486 \:  {in}^{2}
7 0
3 years ago
Other questions:
  • Lester rents his vacation home for 6 months and lives in the home during the other 6 months of 2018. The gross rental income fro
    10·1 answer
  • If 4x+3y=10 and 2x+7y=20, determine a coefficient for x that makes the equation below true.
    15·1 answer
  • 75 is 20% of what number?
    6·1 answer
  • Suppose you buy a 1.25-pound package of ham at $5.20 per pound. (a) What fraction of a pound did you buy? (b) How much money did
    7·2 answers
  • Assume that the profit generated by a product is given by where x is the number of units sold. If the profit keeps changing at a
    8·1 answer
  • The median of the set of data with values 10,12,15,16,18,20 is?​
    13·2 answers
  • A polygon with 7 sides has how many triangles​
    12·1 answer
  • 2x+1 cual es su respuesta ??
    5·2 answers
  • An auditorium has rows of seats with a seats in each row Kayla
    12·1 answer
  • You spend a $20 per turn on a fair game to win $50 for each win. you lose the first round but win the next two rounds.
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!