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3 years ago

help please I will mark u brainliest and give a rate of 5 stars!! and maybe give an explanation pls thank you.

Mathematics

2 answers:

Svetradugi [14.3K]3 years ago

7 0

Answer:

Step-by-step explanation:

The formula for the area of a semicircle is

The Diameter of your semicircle is 2, and the radius is half of the diameter, so the radius (r) of the semicircle is 1.

Solve 1^2

According to PEMDAS, you solve the Multiplication first.

Now divide with your dividend above.

Therefore, your answer is 1.57

gogolik [260]3 years ago

7 0

1.57 is the answer bc 3.14 is pi times 1 is itself so pi/3.14 over 2

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56 books; 75% decrease

suter [353]

75% of 56 is .75 * 56
.75 * 56 = 42
Because you are decreasing, you subtract 42 from 56.
56 - 42 = 14
A 75% decrease of 56 books would leave 14 books.

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3 years ago

Read 2 more answers

The answer to the question please

Jlenok [28]

Answer:

the answer is -2x^9

Step-by-step explanation:

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2 years ago

Prove that the triangle EDF is isosceles. Give reasons for your answer.

Gekata [30.6K]

Answer:

$\triangle EDF$ is isosceles.

Step-by-step explanation:

Please have a look at the attached figure.

We are <u>given</u> the following things:

$\angle EDF = y$

$\text{External }\angle DFG = 90 +\dfrac{y}{2}$

Let us try to find out $\angle E$ and $\angle DFE$ . After that we will compare them.

<u>Finding </u> $\angle DFE$ <u>:</u>

Side EG is a straight line so $\angle GFE = 180$

$\angle GFE$ is sum of internal $\angle DFE$ and external $\angle DFG$

$\angle GFE = 180 = \angle DFE + \angle DFG\\\Rightarrow 180 = \angle DFE + (90+\dfrac{y}{2})\\\Rightarrow \angle DFE = 180 - 90 - \dfrac{y}{2}\\\Rightarrow \angle DFE = 90 - \dfrac{y}{2} ....... (1)$

<u>Finding </u> $\angle E$ <u>:</u>

<u>Property of external angle:</u> External angle in a triangle is equal to the sum of two opposite internal angles of a triangle.

i.e. external $\angle DFG$ = $\angle E + \angle EDF$

$\Rightarrow 90+\dfrac{y}{2} = \angle E + y\\\Rightarrow \angle E = 90+\dfrac{y}{2} -y\\\Rightarrow \angle E = 90-\dfrac{y}{2} ....... (2)$

Comparing equations (1) and (2):

It can be clearly seen that:

$\angle DFE = \angle E =90-\dfrac{y}{2}$

The two angles of $\triangle EDF$ are equal hence $\triangle EDF$ is isosceles.

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3 years ago

Help fast!!! Give me the real solution pls. First correct awnser get brainliest!

Over [174]

Answer:

She subtracted the two 10x's where instead you're supposed to add them together.

Step-by-step explanation:

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3 years ago

In your opinion, which is better. Pancakes, or waffels?

Luda [366]

Buttermilk waffles:)

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2 years ago

help please I will mark u brainliest and give a rate of 5 stars!! and maybe give an explanation pls thank you.​

help please I will mark u brainliest and give a rate of 5 stars!! and maybe give an explanation pls thank you.