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andrew-mc [135]
3 years ago
6

Please help find surface area!!

Mathematics
1 answer:
NeTakaya3 years ago
3 0

Answer:

138 cm.

Step-by-step explanation:

So first, we find the S.A. of the front and back.

The diagram says the side length of the front is 3 cm. and 3 cm.

3x3=9. So then, the back is also 9 cm, 9+9=18.

Now to find the S.A.'s of the four sides, you have to see the side lengths of each of them. The side lengths are 3 and 10.

3x10=30. This means each of them is 30 cm.

30x4=120. 120 is the total surface area of the four sides.

To find the total surface area of the whole rectangle, you add all the surface areas.

120+18=138 cm. (Not squared, since it's surface area and not area.)

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riadik2000 [5.3K]

Answer:

d=16t squared

Step-by-step explanation:

8 0
3 years ago
11. Joe bought 3 pairs of jeans for $71.40. a. How much did he pay per pair? b. How much would be need to pay for 8 pairs of jea
Vikki [24]

Answer:

$23.80 per pair, $190.4 for 8 pairs

Step-by-step explanation:

a. assuming each pair of jeans is the same price, just divide the total by 3. the price per pair is 71.40/3, which is $23.80 per pair

b. simply multiply the price of one pair of jeans, as found above, by 8. 23.80*8 is $190.4 for 8 jeans

hope this helped!

4 0
2 years ago
Read 2 more answers
Each sequence has eight terms. Evaluate each related series. 1,-1,-3, . . . . . . -13
o-na [289]

The sum of the 8 terms of the series 1-1-3-5- ... -13 is -48

The given sequence is:

1,-1,-3,  . . -13

and there are 8 terms.

The related series of this sequence is:

1-1-3-5- ... -13

Notice that the series is an arithmetic series with:

first term, a(1) = 1

common difference, d = -1 - (1) = -2

last term, a(8) = -13

To find the sum of the series, use the sum formula:

S(n) = n/2 [(a(1) + a(n)]

Substitute n = 8, a(1) = 1, a(n) = a(8) = -13 into the formula:

S(8) = 8/2 [1 + (-13)]

S(9) = 4 . (-12) = -48

Learn more about sum of a series here:

brainly.com/question/14203928

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8 0
1 year ago
A class of 32 students contains 15 boys.
LiRa [457]

Answer:

11 boys walk to school each day

Step-by-step explanation:

<em>*The following will be assumed: the only genders of students in the class are male or female; the only options for getting to school are walking or not walking</em>

If there are 32 students in the class total, and there are 15 boys,

32 - 15 = 17

there are 17 girls.

If 8 of these girls do not walk to school,

17 - 8 = 9

9 girls walk to school

So, if 20 total students walk to school, and 9 of those are girls

20 - 9 = 11

11 boys walk to school each day.

3 0
2 years ago
Read 2 more answers
Mathematics question in the screenshot below.
irga5000 [103]

Step-by-step explanation:

1/6×100%=50/3%

3/24×100%=25/4%

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=>50/3%+25/4%+75/2%+x=100%

=>100%-725/12%=x

=>x=59 and 5/12

4 0
3 years ago
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