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mezya [45]
3 years ago
13

Chris made a solid by joining two identical rectangular prisms as picture blow. The overall dimensions of the composite solid ar

e 20 centimeters (cm) by 18 centimeters by 15 centimeters. What is the surface area, in square centimeters, of a single prism?
PLEASE, don’t answer if you don’t know the answer to the question. Whoever answers correctly will get Brainliest!

Mathematics
1 answer:
Pie3 years ago
8 0

Answer:

B

Step-by-step explanation:

Base area = (base x width) = 20 x 18 = 360 cm^2

Base perimeter = (base + width) x 2 = (20 + 18) x 2 = 76 cm

lateral surface = (base perimeter x height) = 76 x 15 = 1140 cm^2

Surface area = (base area x 2) + lateral surface = (360 x 2) + 1140= 1860 cm^2

surface area of a single prism = 1860 / 2 = 930 cm^2

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Does anyone know what k+2x=3 Does anyone know the answer?
alexira [117]

Answer:

You can only be able to solve two variables, k and x based on what you input as your question

k= -2x+3

x= (3-k)/2

5 0
3 years ago
Read 2 more answers
Make n the subject of m= 4n-gn+1
Misha Larkins [42]

Answer:

n = (m-1)/(4-g)

Step-by-step explanation:

m= 4n-gn+1

Subtract 1 from each side

m-1= 4n-gn+1-1

m-1 = 4n -gn

Factor out n

m-1 = n(4-g)

Divide each side by (4-g)

(m-1)/(4-g) =  n(4-g)/(4-g)

(m-1)/(4-g) =  n

n = (m-1)/(4-g)

6 0
3 years ago
Read 2 more answers
Solve the equation:<br><br> a) -3 = 7+2t/3<br><br> b) 4(5x-2) = 7(2x+3) <br><br> c) 2x-6 = 30-2.5x
Umnica [9.8K]
Let's start by solving the first equation.

a) -3 = 7 + 2t/3 
To begin simplifying this equation, we should multiply both sides by 3 to get rid of the denominator on the right side of the equation.
-9 = 7 + 2t
Next, we should subtract 7 from both sides to cancel out the 7 on the right side.
-16 = 2t
Finally, we should divide both sides by 2.
t= -8


Now let's move on to the next equation.

b) 4(5x-2) = 7(2x+3)
Let's use the distributive property to get rid of the parentheses and their coefficients.
20x-8 = 14x + 21

Now, lets subtract 14x from both sides of the equation.

6x - 8 = 21

Next, let's add 8 to both sides of the equation.

6x = 29

And divide both sides by the coefficient of x, which is 6.

x = 29/6 or 4 5/6

Now for the last equation.

C) 2x - 6 = 20 - 2.5x
First, we should add 2.5x to both sides to cancel out the -2.5x on the right side of the equation.
4.5x - 6 = 20
Now, let's add 6 to both sides to get the variable term alone.
4.5x = 26
Finally, we should divide both sides by 4.5 to get x by itself.
x = 5 7/9

Hope this helps! :)
7 0
3 years ago
How do you work out perimeter?
Harman [31]
You need to add up all the sides to find the perimeter.
5 0
3 years ago
Quadrilateral KLMN is similar to quadrilateral OPQR. Find the measure of side QR.
Shalnov [3]

Answer:   12.6=13

Step-by-step explanation:

7 0
2 years ago
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