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
Radda [10]
3 years ago
7

Use the picture to answer part a and part b.

Mathematics
1 answer:
sladkih [1.3K]3 years ago
8 0

Answer:

Part A:  2,100 cm²

Part B: 5,880 cm³

Step-by-step explanation:

Area 1st rectangle = 15*28

Area 2nd rectangle = 20*28

Area 3d rectangle = 12*28

Area 4th rectangle = 13*28

Area trapezoid =(1/2) ( base1 + base2)*height = (1/2) (15+20)*12

There are two such trapezoids.

Complete surface area = 15*28 + 20*28 +12*28+13*28 + 2 *(1/2)(15+20)*12 =

= 2,100 cm²

Part B.

Volume = base area*height prism

Base area = area trapezoid = (1/2) (base1 a+ base2)*heght trapezoid =

= (1/2)*(20+15)*12

Volume =  (1/2)*(20+15)*12*28 = 5,880

You might be interested in
On Christmas, a shopkeeper needs 820 candles. If each packet contains
dlinn [17]

Answer:

41

Step-by-step explanation:

If the shopkeeper needs 820 candles, and each packet has 20 candles, 820/20 = 41 packets.

6 0
3 years ago
Read 2 more answers
Im trying to get everything on my overdue list done- but most of its math anyone help?
Bad White [126]

The total surface area of the given pyramid is:

A = 39ft²

<h3>How to get the surface area of the given figure?</h3>

The total surface area will be equal to the sum of the areas of the square and the 4 triangles.

Remember that for a square of side length S, the area is:

A = S².

In this case, S = 3ft, then:

A = (3ft)² = 9ft².

Now, the area of a triangle of base B and height H is:

A = B*H/2.

Here we can see that the triangles have a base of 3ft (the sides of the square) and a height of 5ft, then the area of each triangle is:

A = (3ft)*(5ft)/2 = 7.5 ft²

Then the total area of the figure is:

A = 4*(7.5 ft²) + 9ft² = 39ft²

If you want to learn more about pyramids:

brainly.com/question/10042135

#SPJ1

3 0
2 years ago
Which of the following is a solution to<br> the equation 0 = x2 – 8x – 13?
Fed [463]

Answer:

x= 32 ± √29

Step-by-step explanation:

x² - 8x - 13 = 0

ax² + bx + c = 0

Comparing equations we get,

a=1

b=(-8)

c=(-13)

Using quadratic formula,

________

x= b² ± √ b²-4ac

—————————

2a

Substituting the values

__________

x= 64 ± √( 64 + 52)

______________

2

= 32 ± √29

Hope this answer helps you....

5 0
4 years ago
Solve for x. <br> 2(x-2)= 6x + 2 -2(-2x - 4)
Lena [83]

Answer:-7/4

Step-by-step explanation:

2(x-2)=6x+2-2(-2x-4)

Open brackets

2x-4=6x+2+4x+8

Collect like terms

-4-2-8=6x+4x-2x

-14=8x

Divide both sides by 8

-14/8=8x/8

-7/4=x

x=-7/4

4 0
4 years ago
A group of students was discussing the meaning of this statement. They were arguing back and forward about whether the converse
Savatey [412]

Answer:

The statement is missing. The statement is -- "A ray can be part of a line."

The answer is : The converse is not true, so Jahmiah is correct.

Step-by-step explanation:

A conditional statement is represented by showing p → q. It means if p is correct or true,  then q is also correct or true.

And the converse of p → q can be shown as  q → p.

But we know that the converse of a statement is not always true, it may be true and may not be true.

In the context, the statement is " a ray can be a part of a line." And so the converse would be  "A line can be a part of the ray".

So by definition we know that a line is continuous line having no end points, it extends in one direction. While a ray starts from a point and extends to infinity in one direction.

Thus ray is part of line but line is not a part of the ray. So the converse of the statement is not correct.

Hence, Jahmiah is correct.

6 0
4 years ago
Other questions:
  • Alexandra is scuba diving. Every 5 minutes an alarm goes off, and she checks her instruments and makes note of her depth. The de
    5·2 answers
  • I just need to figure out the number when you round it to the nearest tenth .
    11·2 answers
  • What is the slope of a line that goes through the points (2, 5) and (8, 6) ?
    5·1 answer
  • 2x3-4x2 + 6x -3<br> X3+ 6x2 -8x + 12<br> -3x3+ 2x2 - 4x-7
    9·2 answers
  • Find (4x 10^5)- (9x10^2)
    12·1 answer
  • The lengths of the sides of a triangle are in the extended ratio 7​ : 9 ​: 10. The perimeter of the triangle is 52 cm. What are
    9·1 answer
  • Math question need help
    9·1 answer
  • What is the value of n?
    8·1 answer
  • AHHH PLEASE HELP PLEASE PLEASE PLEASE
    15·2 answers
  • If <br><br><br> Plz help ASAP! Thank you
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!