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omeli [17]
3 years ago
13

Find the surface area of the rectangle: 8 cm 5 cm 12 cm

Mathematics
2 answers:
Ostrovityanka [42]3 years ago
8 0
12cm is the surface
VARVARA [1.3K]3 years ago
3 0
It's 50cm because you add both lengths widths and heights, 8+8, 5+5, 12+12 then you get 16+10+24= 50
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the area of a triangle is 384 square feet. If its base is 8 feet longer than its altitude, find the length of the base and the a
REY [17]
A=1/2bh
b=8+h
A=384

384=1/2(bh)
times 2
768=bh
sub
768=b(8+b)
768=8b+b^2
minus 768 both sides
0=b^2+8b-768
factor
0=(b-24)(b+32)
set to zero
b-24=0
b=24

b+32=0
minus 32
b=-32
false, legnths cannot be negative

b=24
24=8+h
minus 8
16=h

base=24ft
altetude=16ft
6 0
3 years ago
Evaluate the expression:<br> 9 +7(5-2)<br> Using PEDMAS<br><br> yall i suck at math
ANEK [815]

Hello! :)

Let's use PEMDAS.

Parenthesis

Exponents

Multiplication

Division

Addition

Subtraction

(5-2) = 3 Do parenthesis.

7 × 3 = 21 Multiply with what we got after doing the parenthesis.

9 + 21 = 30 Add with what we had left.

30

Hope this helps!

ELITEDIPER

5 0
3 years ago
6x4=8xN<br><br> How can I solve this
Nookie1986 [14]

6×4=24 right so than how many 8 can get you to 24, so you do 8,16,24 or 8×3 So it's 8×3=24 (Your welcome ^.^)


3 0
3 years ago
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Which of the following is a Composite Number?
adoni [48]
61 is the composite Number your welcome
5 0
3 years ago
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Find the area of each triangle to the nearest tenth???
pshichka [43]

Answer:C

Step-by-step explanation:

8 0
1 year ago
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