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sergey [27]
3 years ago
8

Find the surface area of the polyhedron below. The area of each base is 65 cm^2​

Mathematics
1 answer:
yarga [219]3 years ago
8 0

Answer:

D. 290 square cm

Step-by-step explanation:

Surface area of polyhedron

= 2 \times 65 + 7 \times 8 + 4  \times 8 + 3 \times 8 + 3(2 \times 8) \\  = 130 + 56 + 32 + 24 + 48 \\  = 290 \:  {cm}^{2}

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Find the present to increase.round to the nearest percent. From 13 friends to 19 friends
vlada-n [284]

Answer:

20%

Step-by-step explanation:

4 0
3 years ago
Solve for 2:<br> 2x + 62°<br> 52 + 38°<br> 2 =
Paladinen [302]

Answer:

The answer is 8°

Step-by-step explanation:

2x + 62° = 5x + 38°

2x – 2x + 62° – 38° = 5x – 2x + 38° – 38°

24° = 3x

3x = 24°

3x/3 = 24°/3

x = 8°

Thus, The value of x is 8°

<u>-TheUnknownScientist 72</u>

8 0
2 years ago
Please show how you solved the problem. <br><br><br><br><br><br><br><br> 4a - 14 = 7a - 8
lianna [129]

4a - 14 = 7a - 8

4a - 7a = 14 -8

-3a = 6

a = 2

ok done. Thank to me :>

4 0
2 years ago
Read 2 more answers
Find values of sine cosine tangent for
slava [35]

Answer:

The correct answer is option a

Sin A = 2√13/13

Cos A  = 3√13/13

Tan A = 2/3

Step-by-step explanation:

From the figure we can see that,a right angled triangle.

ΔABC

<u>To find side AB </u>

AB = √(AC)² + (BC)² =√(36² - 24² )= √1872

AC = 12√13

<u> To find the trigonometric ratio </u>

Sin A = BC/AB = 24/12√13  = 2√13/13

Cos A = AC/AB = 36/ 12√13  = 3√13/13

Tan A = BC/AC = 24/36 = 2/3

6 0
3 years ago
Read 2 more answers
The quotient of a number and -7 decreased by 2, is 10.
klasskru [66]
Hello!

This expression can be broken down into 3 separate parts:

1. "the quotient of a number and (-7)"
2. "decreased by 2"
3. "is 10"

We'll begin with the first part. The word "quotient" implies the result of a division problem. Therefore, this part can be represented by the following expression (let "x" represent the unknown number):

\frac{x}{(-7)}

Now we'll move on to the second part. If something is decreased by a value of 2, we know that 2 is being subtracted. Therefore, this part can be represented by the following expression:

– 2

Now we'll move on to the third and final part. The phrase "is 10" implies that the operations preceding this part are equal to 10. Therefore, this part can be represented by the following expression:

= 10

Finally, put the three parts together to create the following equation:

\frac{x}{(-7)} – 2 = 10

The equation has now been fully translated. If, however, you are required to find the unknown value (x), begin by adding 2 to both sides of the equation:

\frac{x}{(-7)} = 12

Now multiply both sides by (-7):

x = (-84)

We have now proven that the unknown number is equal to (-84).

I hope this helps!
3 0
2 years ago
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