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
laiz [17]
3 years ago
15

HELP i don’t know how to do this

Mathematics
2 answers:
Natalija [7]3 years ago
8 0

Answer:

4a

Step-by-step explanation:

4a

the top and right are a-b, but you have to add the b’s back in, so really all sides are a

a+a+a+a=4a

REY [17]3 years ago
5 0

Answer: 4a

Step-by-step explanation: perimeter is the length of all sides added together. Every length is given combine like variables and you will get 4a+2b-2b. 2b-2b is 0 which leaves you with 4a

You might be interested in
What type of function is represented in the table?
malfutka [58]

Answer:

C.

Step-by-step explanation:

i believe it is C but do not trust me on this :p

5 0
3 years ago
Read 2 more answers
At a certain time of day, a pole, 5 meters tall, casts a 3-meter tall shadow. The shadow of a building next to the pole is 18 me
algol [13]

Answer:

Length of the building = 30 meters

Step-by-step explanation:

Given:

Length of pole = 5 meters

Length of shadow of pole = 3 meters

Length of shadow of the building = 18 meters

To find length of the building.

Solution:

On drawing the figure of the given situation, we get two similar triangles.

Applying proportionality theorem of similar triangles.

\frac{AB}{BC}=\frac{DE}{EC}

Plugging in the given lengths.

\frac{AB}{18}=\frac{5}{3}

Multiplying both sides by 18.

\frac{AB}{18}\times 18=\frac{5}{3}\times 18

AB=\frac{90}{3}

AB=30

Thus, length of the building = 30 meters

3 0
3 years ago
An airplane travels 600 miles against the wind in 4 hours, and makes the return trip with then same wind in 2 hours. Find the sp
SOVA2 [1]

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

Against wind:

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

=4(x-y)

and this has to be equal to 600

600=4(x-y)

Divide both sides by 4

and we get

x-y=150

With wind:

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

=2(x+y)

and this has to be equal to 600

600=2(x+y)

Divide both sides by 2

and we get

x+y=300

So, we get system of equations

x-y=150

x+y=300

now, we can solve it by adding both equations

x-y+x+y=150+300

2x=450

now, we can solve for x

x=225

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

225+y=300

y=75

So,

The speed of wind is 75 miles / hour


3 0
3 years ago
GIVING BRAINLIEST PLEASE HELP!!
insens350 [35]

Answer:

I need to see the "Dynamic Geometry Tool", as my answer will be based off that :)

Step-by-step explanation:

5 0
3 years ago
Ray ET bisects angle WET. If angle WET is 48 degrees and angle TEV is 3x +9, what
Tresset [83]

Answer:

angle wet and angle vet are equal because et bisects wev.

angle wet=angle vet

48°=3x+9

48-9=3x

39=3x

39/3=x

13=x

8 0
3 years ago
Other questions:
  • (62)x=1 what is the value of x
    10·2 answers
  • Darren teaches a class of 25 students. He assigns homework 3 times a week, and each assignment consists of 12 problems. How many
    15·1 answer
  • The area of a cross section perpendicular to the base of a rectangular prism is 45 square inches. If the length and width of the
    15·1 answer
  • Solve, using the substitution method.
    13·1 answer
  • Plzz answer these!!!!!!!!! will give brainliest!!!!!!!!
    13·1 answer
  • Please answer quick! Will give Brainliest, 5 stars, and I will like your answer!!
    9·2 answers
  • What is the slope of the graph shown?
    12·1 answer
  • HELP WILL MARK RIGHT ANSWER BRAINLIEST
    7·2 answers
  • What’s the answer to number 1?
    10·1 answer
  • A toy was bought for Rs.564 thereby profit 12%. Find the SP of the toy
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!