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3 years ago

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Mathematics

1 answer:

Reil [10]3 years ago

7 0

Answer:

A. 1

B. 7

C. 2

D. 10

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What is 257,650 rounded to the nearest ten

den301095 [7]

The answer is 257,650

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3 years ago

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What is the radius of the circle in the example? 3 cm 5 cm 7 cm

Strike441 [17]

Answer:

Step-by-step explanation:

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3 years ago

In the diagram, the radius of the outer circle is

JulijaS [17]

the value of x is 8 cm.

Step-by-step explanation:

Correct Question : In the diagram, the radius of the outer circle is 2x cm and the radius of the inside circle is 6 cm. The area of the shaded region is 220π cm2. What is the value of x? Enter your answer in the box.

We have ,

the area of a circle = πr²

the outer circle area = $\pi(2x)^2 =4\pi x^2$

the inside circle area = $\pi (6)^2= 36\pi$

According to Question,

the outer circle area - the inside circle area = he shaded region

⇒ $\pi (4x^2)-36\pi =220\pi$

⇒ $x^2-9 =55$

⇒ $x^2=64$

⇒ $x =\sqrt{64}=8$

Therefore , the value of x is 8 cm.

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2 years ago

Suppose that 20% of adults belong to health clubs, and 51% of these health club members go to the club at least twice a week. Wh

Westkost [7]

Answer:

10.2% of adults will belong to health clubs and will go to the club at least twice a week

Step-by-step explanation:

assuming that the event H=an adult belongs to a health club and the event T= he/she goes at least twice a week , then if both are independent of each other:

P(T∩H)= P(H)*P(T) ( probability of the union of independent events → multiplication rule )

replacing values

P(T∩H)= P(H)*P(T) = 0.20 * 0.51 =0.102

then 10.2% of adults will belong to health clubs and will go to the club at least twice a week

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3 years ago

One company sells a 4 gallon jug of lemonade sells for $24 dollars another sells 8 pack of 1 quart bottles for $16, which one is

Ket [755]

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the 4 gallon jug of 24$ is cheaper

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