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Mrac [35]
3 years ago
6

Can I get an explanation on how to do this?

Mathematics
2 answers:
Irina18 [472]3 years ago
6 0
<h3>Answer:</h3>

<u>Surface area</u> = 8 × 6 + 2(6 × 3) + 8 × 3 + 12 × 10 + 2 × 12 + 2(2 × 10) + (12 × 10 - 8 × 6)

  • 48 + 36 + 24 + 120 + 24 + 40 + 72
  • 364cm².

<u>Hence, the surface area of composite figure is 364cm²</u>.

scoray [572]3 years ago
4 0

Answer:

Step-by-step explanation:

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A three‐digit number satisfies the following conditions: The digits are consecutive whole numbers in increasing order; the sum o
IRINA_888 [86]
Answer: 123
They have to add up to 3 4 5 6 or 7 so it has to be that
4 0
3 years ago
PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!
s2008m [1.1K]

Answer: 912

===================================

Work Shown:

The starting term is a1 = 3. The common difference is d = 5 (since we add 5 to each term to get the next term). The nth term formula is

an = a1+d(n-1)

an = 3+5(n-1)

an = 3+5n-5

an = 5n-2

Plug n = 19 into the formula to find the 19th term

an = 5n-2

a19 = 5*19-2

a19 = 95-2

a19 = 93

Add the first and nineteenth terms (a1 = 3 and a19 = 93) to get a1+a19 = 3+93 = 96

Multiply this by n/2 = 19/2 = 9.5 to get the final answer

96*9.5 = 912

I used the formula

Sn = (n/2)*(a1 + an)

where you add the first term (a1) to the nth term (an), then multiply by n/2

-----------------

As a check, here are the 19 terms listed out and added up. We get 912 like expected.

3+8+13+18   +23+28+33+38    +43+48+53+58    +63+68+73+78   +83+88+93 = 912

There are 19 values being added up in that equation above. I used spaces to help group the values (groups of four; except the last group which is 3 values) so it's a bit more readable.

5 0
3 years ago
Read 2 more answers
Rewrite the equation below so that it does not have fractions 2+2/3x=3/4
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Answer:

9x = 16

Step-by-step explanation:

2+2/3x=3/4

4/3x = 3/4

3x/4  = 4/3

9x = 16

8 0
3 years ago
The length of a rectangle is three times it’s width. The perimeter of the rectangle is 100 inches. What are the dimensions of th
BabaBlast [244]

Answer:

let the width be x inches

then the length would be 3x inches

perimeter of rectangle = p = 2(l+b)

100= 2(3x+x)

100= 2(4x)

100=8x

x=100/8

x=12.5 inches

thw width is 12.5 inches and length is 3*12.5=37.5 inches

Step-by-step explanation:

8 0
3 years ago
Can anyone please help me with these questions please. thanks.
Pani-rosa [81]
1.) 3/4
2.) It snowed 1/4 more on Tuesday than it did on Monday.
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