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3 years ago

I need help with number 12 and 13 please

Mathematics

1 answer:

aniked [119]3 years ago

7 0

Answer:

D, 1200

Step-by-step explanation:

V of Cylinder= (pi)r^2h

r=radius h=height

we know the area of a circle which is (pi)r^2. So we can just multiply that by the height to get the answer.

100x12=1200

there

also for 12 its D

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Find the value of X

olchik [2.2K]

<h3>Answer: 112</h3>

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

Explanation:

The angle adjacent to the 146 degree angle is 180-146 = 34 degrees.

In other words, the angles 34 and 146 combine to 180. These angles are supplementary.

The tickmarks on this triangle tell us it is isosceles. The angles opposite the congruent sides are congruent angles. So the unmarked interior angles (not marked x) are 34 degrees each.

Now use the fact that any triangle has its interior angles always add to 180

x+34+34 = 180

x+68 = 180

x = 180-68

x = 112

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3 years ago

Is the following relation a function? *

spayn [35]

Answer:

No.

Step-by-step explanation:

Well at first glance it might seem so but there are two points particularly that can tell you that these points cannot be within a function.

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3 years ago

What is the slope of -2x + 4y = 12 ?

Daniel [21]

Answer:

Slope: 1/4

Step-by-step explanation:

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3 years ago

40.32 is 76.8% of what number?

julsineya [31]

Hey there

Lets solve this question together,

Convert 76.8% to a decimal.

$0.768 * x=40.32$

Multiply 0.768 by x to get 0.768x.

$
0.768x=40.32$

Multiply each term by 1 / 0.768 and simplify.

Cancel the common factor of 0.768.

$x=40.32 / 0.768$

Divide 40.32 by 0.768 to get 52.5

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