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Ira Lisetskai [31]
2 years ago
11

Need help fast, will give brainliest!​

Mathematics
1 answer:
hoa [83]2 years ago
3 0

Answer:

Correct answer is A

Step-by-step explanation:

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the radius of a circle is 9 times of the radius of a smaller circle. the area of the smaller circle is 50 square cenimeters. wha
notsponge [240]

Answer:

4050 cm²

Step-by-step explanation:

This is a question of scale factors:

The radius of the larger circle is 9× that of the smaller circle;

This is the linear scale factor of the enlargement of the smaller to larger circle;

The scale factor of the area pertains to 2 dimensions so the scale factor will be the square of the linear scale factor, which is:
9² = 81

The area of the larger circle is found by the area of the smaller circle multiplied by this number:
50 × 81 = 4050

4 0
2 years ago
An 18-ounce energy drink contains 12 1/2 teaspoons of sugar. How much sugar is one ounce of the drink?
anyanavicka [17]
Divide 18 by 12.5 and your answer is 1.44.
8 0
3 years ago
Read 2 more answers
What is the result of dividing the distance around a circle by the distance across the same circle? What number can you use as a
tekilochka [14]

Answer: The result of the division is the number pi.

And the approximation of pi is: pi = 3.14

Step-by-step explanation:

The distance around a circle is called the perimeter of the circle.

The distance across a circle (This is a line that starts on one point of the circle, go through the center of the circle, and end in the next time it intersects the circle) is called the diameter of the circle.

The quotient between these two quantities is maybe one of the most famous numbers in the world, is the number pi, written as:

π = 3.14159265358979...

Is an irrational number, which means that the decimals keep going infinitely.

Then we can conclude that:

"The result of dividing the perimeter by the diameter, is equal to the number pi = π = 3.14159265358979..."

Because this is an irrational number and is actually impossible to write it, we usually use pi = 3.14 to aproximate it.

6 0
3 years ago
The length of a rectangular picture frame is 4 inches less than three times the width. The perimeter is 136 inches. Find the len
natulia [17]

Answer:

The width of the rectangle is 18 inches, and the length is 50 inches

Step-by-step explanation:

We can designate a variable, x, to represent the width of the rectangle.  To represent the length and widths of the rectangle, we can say that the length is 3x-4 and the width is just x.  We can then write an equation for the perimeter and solve:

2(3x-4) + 2x = 136

6x - 8 + 2x = 136

8x - 8 = 136

8x = 144

x = 18

To calculate the length

(3x - 4)

3(18) - 4 = 50 in

6 0
3 years ago
What equation is the inverse of y=7x^2-10?
tangare [24]

Answer:

Option 2: y = ±sqrt(\frac{x+10}{7})

Step-by-step explanation:

y = 7x^2 - 10

         To find the inverse of a function, you must swap the y and x.

x = 7y^2 - 10

         Now I will just simplify to have y by itself on the left hand side.

x + 10 = 7y^2

\frac{x+10}{7}=y^2

sqrt(\frac{x+10}{7})=±y

y = ±sqrt(\frac{x+10}{7})

8 0
3 years ago
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