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mezya [45]
4 years ago
9

8 - (-11) = ? what is the answer to this problem​

Mathematics
1 answer:
Lapatulllka [165]4 years ago
7 0

Answer: 19

Step-by-step explanation: when two negative signs are next to eachother, you need to add the two numbers.

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tiny-mole [99]

3 feet from each end of the mantel

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4 years ago
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Find the surface area of the rectangular prism.<br> 8 m<br> 4 m<br> 1 m
Dmitry_Shevchenko [17]

Answer:

A=2(wl+hl+hw)

Step-by-step explanation:

5 0
3 years ago
A circle has a sector with area 33 pi and a central angle of 11/6 pi radians. What is the area of a circle?
Mashutka [201]

Answer:

36π

Step-by-step explanation:

The area of a circle is given as:

A = \pi r^2

where r = radius of the circle

The area of a sector of a circle is given as:

A_s = \frac{\alpha }{2\pi} * \pi r^2

where α = central angle in radians

Since \pi r^2 is the area of a circle, A, this implies that:

A_s = \frac{\alpha }{360}  * A

A circle has a sector with area 33 pi and a central angle of 11/6 pi radians.

Therefore, the area of the circle, A, is:

33 \pi = \frac{\frac{11 \pi}{6} }{2 \pi} * A\\\\33\pi = \frac{11}{12} * A\\\\=> A = \frac{33\pi * 12}{11}\\ \\A = \frac{396 \pi}{11} \\\\A = 36\pi

The area of the circle is 36π.

5 0
3 years ago
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you make two cylinders using 8.5-by-11-inch pieces of paper. One has a height of 8.5 inches, and the other has a height of 11 in
Elan Coil [88]
The second cylinder is taller correct? 
8 in < 11 in 

If the height is also larger, the base is most likely larger too.

Wouldn't the largest cylinder have a Larger surface area?

8 0
4 years ago
How do I solve an equation like this, one with a negative in front of parentheses?
azamat

The factor outside the parentheses is -1. Distribute using that factor.

2 - (4 - <em>x</em>) = 7<em>x</em> - 5<em>x</em>

<em />

-1 * 4 = -4 and -1 * -<em>x</em> = <em>x</em>

<em />

2 - 4 + <em>x</em> = 7<em>x</em> - 5<em>x</em>

Simplify.

-2 + <em>x</em> = 2<em>x</em>

<em>x</em> = 2<em>x</em> + 2

-<em>x</em> = 2

<em>x</em> = -2

<h3>Answer:</h3>

<em>x</em> = -2

3 0
4 years ago
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