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
vagabundo [1.1K]
2 years ago
9

Find area and perimeter​

Mathematics
1 answer:
alisha [4.7K]2 years ago
5 0

Answer:

Perimeter

P = P1+P2

P1 = 4a           P2=2(a+b)

P1=4*5           P2=2(3+5)

P1=20            P2=2*8

                     P2=16

P = 20+16

P=36

Area

A=A1+A2

A1=a^{2}                 A2=a*b

A1=5^{2}                 A2=3*5

A1=25                A2=15

A=25+15

A=40

You might be interested in
I need help with Q9 c, I’ve done a and b if it helps, b=325 but I am just stuck on question 9C, I know the answer is 500N (as it
777dan777 [17]

Step-by-step explanation:

I know you've already done parts a and b, but I'll show the work for that before I do c.

Draw two free body diagrams, one for the car and one for the trailer.  The car pulls the trailer forward with a tension force T, so the trailer pulls backward on the car with an equal and opposite force T.

The car also has a 1200 N forward force from the engine, and a 200 N backwards force from resistance.

The trailer has a backwards resistance force of 100 N.

Sum of forces on the car:

∑F = ma

1200 − 200 − T = 900a

1000 − T = 900a

Sum of forces on the trailer:

∑F = ma

T − 100 = 300a

To solve the system of equations, first add the equations together.

1000 − 100 = 1200a

900 = 1200a

a = 0.75 m/s²

Plug back into either equation to find the tension force:

T = 325 N

Now for part c, draw new free body diagrams for the car and trailer.  This time, the car is pushing back on the trailer to slow it down.  So the trailer is pushing forward on the car with an equal and opposite force.  The magnitude of that tension force is given to be 100 N.

The car also has a backwards 200 N force from resistance, and a backwards brake force F.

The trailer has a backwards 100 N force from resistance.

Sum of forces on the car:

∑F = ma

100 − 200 − F = 900a

-100 − F = 900a

Sum of forces on the trailer:

∑F = ma

-100 − 100 = 300a

-200 = 300a

a = -⅔

Plugging into the first equation:

-100 − F = 900 (-⅔)

-100 − F = -600

F = 500 N

4 0
2 years ago
A group of students is collecting books to add to their
pentagon [3]

Answer:(2,23) & (7,48)

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Solve using the square root method X2=25<br>​
aleksandrvk [35]

Answer:

Square root =

remember :

\boxed {x^2 = \pm a}

x² = ± a

x = ña

.

x = ñ25

x = ±5

• x = 5 and -5

8 0
2 years ago
Read 2 more answers
Name four values of b which make the expression factorable:<br> X^2 - 3x + b
sveta [45]
X= 9/4 if finding the perfect square trinomial

7 0
3 years ago
10. Suppose y varies directly as x, and y = 9 when x = 3/2. Find y when x = 1
pogonyaev

Answer:

y = 6

Step-by-step explanation:

We need to interpret the question

y varies directly as x

y varies x

To equate it, we need to add a constant K

y = K/x

Using the information we are provided with

y = 9

x = 3/2

insert into

y = Kx

9 = K * 3/2

9 = 3K/ 2

3K = 9 *2

3k = 18

To get K, divide through by 3

3K/3 = 18/3

K = 6

Since we've gotten our K = 6

y = Kx

Using the new information

y = ?

x = 1

K = 6

y = 6* 1

y = 6

The new y = 6 , x =1

6 0
3 years ago
Other questions:
  • Which defines a line segment?
    7·2 answers
  • Identify the transformation from f(x) to g(x)
    13·1 answer
  • Find the size of angle BAC. Give your answer to 3 significant figures
    15·1 answer
  • The area of a circle is πr2. To find the area of a sector with a central angle of Θ, measured in radians, by what should you mul
    12·2 answers
  • How many times can 15 go into 75
    5·2 answers
  • Maricela needs to write instructions for how to construct a regular hexagon inscribed in a circle. She begins by writing the fol
    11·1 answer
  • A used book store is selling 3 records and 5 CDs for $60. You can also buy 6 records and 4 CDs for $80. Find the cost of one CD.
    12·1 answer
  • Help please tysvm! (Write explanation too,)
    6·1 answer
  • Does anyone know the answer to this like I don't understand how to do this?
    6·1 answer
  • PLEASE HELP. DON’T NEED DEEP EXPLANATION JUST ANSWERS.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!