3 years ago

FIRST BRAINIEST Tifania and Sean tried to find the circumference of a circle with a radius of 14 cm. Their work is shown below.

Mathematics

1 answer:

Simora [160]3 years ago

8 0

Tifania’s work is correct because the formula for circumference is 2(3.14)(r)

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One counting number is 4 times great as a counting number.The product of the two number is 36.What is the sum of the two number

VARVARA [1.3K]

Answer:

The sum of the two numbers is 15

Step-by-step explanation:

Let the counting numbers be x and y.

Then we can write the following equations

x=4y.......1 (one is four times greater )

x(y)=36.....2 (the product of the two)

Putting equation 1 into equation 2, we get

4y(y)=36

${4y}^{2} = 36$

Dividing through by 4,we get

${y}^{2} = \frac{36}{4}$

${y}^{2} = 9$

Taking square root of both side, we obtain

y=3

Putting the value of y into equation , we get

x=4(3)=12

Hence the numbers are 3 and 12

Therefore the sum of the two numbers is 3+12=15

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3 years ago

How is the graph of y = -8x2 - 2 different from the graph of y = -8x2?

Aleks04 [339]

Answer:

(Answer D)

Step-by-step explanation:

Please use " ^ " to indicate exponentiation: y = -8x^2 - 2, y = -8x^2

The graph of y = -8x^2 is an inverted parabola with vertex at (0, 0).

That of y = -8x^2 - 2 is the same as above, except that the whole graph has been shifted 2 units down (Answer D).

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3 years ago

Gatorade come in two different sizes. A 16 ounce bottle costs 2.10 and a 20 ounce bottle costs $3.15. Which is the better buy an

sattari [20]

16/ 2.10 = 7.6 ounces per $1
20/ 3.15 = 6.3 ounces per $1
So which do you think?

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3 years ago

Three members of a 5 - person committee must be chosen to form a subcommittee. How many different subcommittees could be formed?

kenny6666 [7]

Answer:i have no idea

Step-by-step explanation:

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3 years ago

The sound intensity of rustling leaves is 100 times the reference intensity. Use your graph to determine the sound intensity of

wariber [46]

The sound intensity of rustling leaves, y = 20 decibels

<u>Step-by-step explanation:</u>

y = 10logx

The sound intensity of rustling leaves is 100 times the reference intensity.

x = ratio of intensity of sound to reference to intensity

x = 100:1 or x = 100

y = 10 log(100) = 10 * 2 = 20 decibels

y = 20 decibels

4 0

3 years ago

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