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Mila [183]
3 years ago
5

A circle has an area of 80 square centimeters. Which answer is closest to the measure of its radius?

Mathematics
2 answers:
Lerok [7]3 years ago
7 0

There are no close answers, because you decided
not to list the choices at all.

The area of a circle is  (pi) x (radius²) .

So                                                 80  =  (pi)  (radius²)

Divide each side by pi :      Radius² = (80/pi)

Take the square root
of each side:                          Radius = √ (80/pi)

                                                             =  5.0463 cm (rounded) 

mafiozo [28]3 years ago
3 0

Answer:

5 centimeters

Step-by-step explanation:

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Given f (x) = 3x - 5 find f (x - 2)
antiseptic1488 [7]

Answer:

3x-11

Step-by-step explanation:

f (x) = 3x - 5

f(x-2)

Replace x in the function with x-2

f (x-2) = 3(x-2) - 5

           =3x-6 -5

           =3x-11

3 0
3 years ago
To simplify 48 ÷ 6 • 3, which operation should be performed first?
dangina [55]

Multiplication. If you need help just remember PEMDAS.

Parentheses

Exponents

Multiplication

Division

Addition

Subtraction

4 0
3 years ago
Read 2 more answers
Heeeeeeeeeeeeeeeeeeepl
DIA [1.3K]

Answer:

Hi there!

Your answer is;

a)

i) 400% of 240

240 is 100%

× 4

960= 400%

ii) 40% of 240

100% = 240

/100

1% = 2.4

× 40

40% = 96

iii) 4% of 240

100% is 240

/100

1% = 2.4

× 4

4% = 9.6

iv) .04% of 240

100% = 240

/100

1% = 2.4

/100

.01% = .024

× 4

.04% = .096

b) the patterns is that all these numbers equal sometime 96. Each of these have a different decimal place, but have the same actual numbers.

c) 4000% = 240

take the pattern:

400% is 960

Scale it up to 4000 by 10

400% is 960

× 10

4000% is 9600

Hope this helps!

5 0
3 years ago
The length of the shadow on flat ground of a man who is 6 feet tall and is standing up straight is 8 feet. The distance between
WARRIOR [948]
The answer is 10 ft.  make a triangle 6ft tall, 8ft long (90 degrees to the other line) and draw a line to complete the triangle.  This is a type of 3,4,5 triangle, a 6,8,10.  The other way to do it is sqrt(6^2+8^2) = sqrt(36+64) = sqrt (100) = 10.

3 0
4 years ago
Robert weighs 20 pounds more than his friend Genesis. The sum of their weights is more than 220 lbs. What is are the smallest po
Vesnalui [34]

Answer:robert=120lbs,genesis=100

Step-by-step explanation:take genesis as (x) and since robert is 20 pounds heavier he would be (X+20) so:

x+(x+20)  =220lbs

2x+20=220

2x=220-20

2x=200

x=100 which we took as genesis

which leaves robert's weight 100 +20 =120

5 0
3 years ago
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