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Nina [5.8K]
3 years ago
14

What is the radius for 7 cm, for area and circumference

Mathematics
1 answer:
katrin [286]3 years ago
4 0

<span>C=2πr</span>

where:
<span>C=</span>circumference
<span>r=</span>radius

To find the circumference, substitute your known values into the equation:

<span>C=2πr</span>
<span>C=2π<span>(7)</span></span>
<span>C=14π</span>
<span>C≈43.98 </span>

 the circumference is approximately 43.98 cm. Hope I helped!

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kati45 [8]

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6 0
3 years ago
Write an equation for a line perpendicular to y = -5x – 4 and passing through the point (15,5)
ozzi

Answer:

y = 1/5x + 2

Step-by-step explanation:

y = - 5x - 4

Slope: -5

Slope of the perpendicular line: 1/5

Point (15,5)

y-intercept: 5 - (1/5)(15)

= 5 - 3 = 2

8 0
3 years ago
If a sample of 64 golfers is taken from a population of 190 golfers, the
Alona [7]
Im going to guess B.

Explanation:
Its either tricky or I’m thinkin too hard on it, but I’m seeing that 64 golfers were TAKEN OUT the population of 190 golfers, so it can’t be either.
6 0
3 years ago
Read 2 more answers
Please answer question five for 30 points !!
Drupady [299]

(2^2)^5(2^6)\qquad\text{use}\ (a^n)^m=a^{n\cdot m}\\\\=(2^{2\cdot5})(2^6)=(2^{10})(2^6)\qquad\text{use}\ a^n\cdot a^m=a^{n+m}\\\\=2^{10+6}=2^{16}\\\\Answer:\ \boxed{c.\ 2^{16}}

5 0
3 years ago
carols mom is paying $36 for a meal. He has a 20% off coupon for the meal. what is the new discounted price?
Sauron [17]

Answer: The price for the meal after the coupon was used is : 28.80

Explanation:

A percentage is basically a fraction, with a denominator of 100, so:

10% = 10/100

15% = 15/100

Hence, 20% is 20/100

This fraction can be reduced to 1/5

Next multiply 36 by 1/5:

36 x 1/5 = 7.2

Another way to get the answer would be dividing by the reciprocal

36 divided by the reciprocal of 1/5 is 5/1, or just 5.

5 divided by 36 is 7.2

So, just add a zero to the end: 7. 20, that number is the amount that will be taken off.

Now we do the number that is taken off minus the amount of the meal:

7.20 - 36 = 28.80

The price for the meal after the coupon was used is : 28.80

Hope this helps! :)

6 0
3 years ago
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