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Mamont248 [21]
3 years ago
11

How many square feet is 10' x 40' feet?

Mathematics
1 answer:
katrin [286]3 years ago
4 0
400 square feet because 10*40 is 400
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X+3y = 2
nalin [4]

Answer:

The value of "x" is 5.

Step-by-step explanation:

In order to solve this system of equations, we first have to take the first equation and use it to represent "y" in terms of "x". We do that in the following way...

x + 3y = 2\\3y = 2 - x\\y = \frac{2}{3} - \frac{x}{3}

Now, we need to take the second equation and substitute "y" for the equivalent value in terms of "x". After doing this we will get the following equation, which we can solve to get the value of "x".

4x - 3y = 23\\4x-3(\frac{2}{3} - \frac{x}{3}) = 23\\4x - 2 + x = 23\\5x - 2= 23\\5x = 25\\x = 5

Therefore, the value of "x" is 5.

8 0
3 years ago
One angle of an isosceles triangle is 80º. What are the other two angles?
eimsori [14]

Answer:

80 and 20

Step-by-step explanation:

80+80+20=180

4 0
3 years ago
use the order of operations to simplify this expression. exspress your answer in the simplest form. 1/4 + 1/2 ÷ 2/8​
elixir [45]

Answer:

9/4

Step-by-step explanation:

This is quite simple you do 1/2 divided by 2/8 which will become multiplication. Then its that number plus 1/4

you get a answer of

9/4 in fraction form

2.25 in decimal form

2 1/4 in mixed fraction form

7 0
2 years ago
The smallest number that must be added to 1300 to make it a perfect cube is
Black_prince [1.1K]

Answer:

d. 31.

Step-by-step explanation:

11^3 = 1331

31.

3 0
3 years ago
What is the area of the trapezoid shown below?
andrew-mc [135]
Ok so the triangle part is 10 but I don’t know what the rectangle part is but the formula for a rectangle is A=base x high
5 0
3 years ago
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