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3 years ago

What are the circumference and area of a circle with radius 7in. Round to the nearest tenth.

Mathematics

1 answer:

Natalka [10]3 years ago

4 0

Circumference is 40 in and area is 150 in²

Step-by-step explanation:

Step 1: Find the circumference of the circle when radius = 7 in

Circumference = 2πr = 2 × 22/7 × 7 = 44 in ≈ 40 in

Step 2: Find the area of the circle.

Area = πr² = 22/7 × 7² = 154 in² ≈ 150 in²

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If A(7,9) and B(3,12) find AB (remember: AB means "the distance between points A and B")

GREYUIT [131]

The length of segments ab is 24

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3 years ago

A group of 72 children completed a survey on what kind of sport they like. The choices were: Chess, Swimming, and Football. Ever

hichkok12 [17]

Answer:

$\dfrac{17}{72}$

Step-by-step explanation:

From the given information:

Total number of students, $n(U)=72$

The choices were: Chess(C), Swimming(S), and Football(F).

Everyone liked at least one sport except 7 kids, $n( C \cup F \cup S)'=7$

Chess is not an active sport; and

10 children liked Chess only, $n( C \cap F' \cap S')=10$

The probability that a randomly-chosen child from this group does not like active kinds of sport is the Probability that a student plays chess only or like no kind of sport at all.

$P( C \cup F \cup S)'+P(C \cap F' \cap S')=\dfrac{n( C \cup F \cup S)'+n(C \cap F' \cap S')}{n(U)} \\=\dfrac{10+7}{72} \\=\dfrac{17}{72}$

8 0

3 years ago

How would you write 0.3y + 1.2 = –0.4x in standard form?

statuscvo [17]

Multiply both sides by 10.

3y + 12 = 4x

subtract 12 and 4x from both sides.

-4x + 3y = -12

8 0

4 years ago

5. What is the Domain?

Ilya [14]

That would be 1 i think

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3 years ago

Justin said that 12 is not a solution of the inequality. Do you agree or disagree with Justin. Use numbers and words to support

Leona [35]

Answer: disagree

Step-by-step explanation:

the sign for it is greater than or equal to so 12 is included in the inequality because 12=12

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3 years ago