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ELEN [110]
2 years ago
15

I suck at area of a circle

Mathematics
1 answer:
IgorC [24]2 years ago
7 0

Answer:

See below.

Step-by-step explanation:

Formula: A = πr²

Since the radius is 4, we fill in the formula with the radius.

A = (3.14)4²

A = (3.14)16

A = 50.24

-hope it helps

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When the number is reduced by 15% , the answer is 6154 . What is the original number ?
Vesna [10]

Let's assume the number as x .

15% of x = \dfrac{x \times 15}{100}

→ \dfrac{3x}{20}

So after reducing 15% the number will be 6154 .

→ x - 3x/20 = 6154

→ 17x/20 = 6154

→ 17x = 6154 × 20

→ 17x = 123080

→ x = 123080/17

  • → x = 7240

So the number is 7240

4 0
3 years ago
How do you solve this: 2x+4+2=7x-6-3?
IrinaVladis [17]

The answer you are looking for is x=3.

Solution/Explanation:

First, writing out the equation,

2x+4+2=7x-6-3.

Next, simplifying the equation just a little bit more, with the four numbers that do not include the variable "x" at all,

2x+6=7x-9.

Now, subtracting 7x from both sides of the equation,

2x+6-7x=7x-9-7x.

Regrouping the positions of the terms, using the Associative Property,

2x-7x+6=7x-7x-9.

Simplifying, and also, canceling out the 7x, since 7x-7x=0.

2x-7x+6=0-9, or 2x-7x+6=-9.

Simplifying "2x-7x," which is -5x,

-5x+6=-9.

Now, subtracting 6 from both sides,

-5x+6-6=-9-6.

Canceling out the "6," since 6-6=0,

-5x=-9-6.

Solving for "-9-6," which is "-15,"

-5x=-15.

Finally, dividing both sides by "-5,"

-5x/-5=-15/-5.

Simplifying "-5x/-5=-15/-5,"

-5x/-5=x.

And, also, -15/-5=3.

This eventually leads to x=3.

So, therefore, the final answer is x=3.

I hope that this has helped answer your question. Good day to you.

8 0
3 years ago
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Dafna1 [17]

Answer: 40

Step-by-step explanation:

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Find the area of the shaded region in the figure below.
Inessa [10]
I think the answer is D
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Claudia's calculator will generate random numbers. She sets it to generate a number from 1 to 5 one hundred times. She then calc
Vika [28.1K]
The answers are in bold

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