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ad-work [718]
3 years ago
9

The diameter of a circle is 13 cm. What is the radius of the circle?

Mathematics
1 answer:
nikklg [1K]3 years ago
5 0

Answer:

The Radius is 6.5 cm.

Step-by-step explanation:

We know that the diameter of a circle is a line that begins on one point of a circle and ends on the opposite side. We also know that the radius is a point on the circle that starts from that point and ends at the center. Therefore, the radius would be half the diameter.

13/2 = 6.5

Hope this helped :D!

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On a hot summers day 262 people used the public swimming pool. The daily prices are 1.50 for children and 2.00 for adults. The r
ololo11 [35]
<h3>Answer:</h3>
  • 154 adults
  • 108 children
<h3>Step-by-step explanation:</h3>

Let x represent the number of adults who swam at the pool. Then (262-x) is the number of children. Multiplying these numbers by the corresponding admission charge will give the associated receipts. We are given the total of receipts, so we can write the equation ...

... 2.00x +1.50(262-x) = 470.00

... 0.50x +393.00 = 470.00 . . . . . simplify

... 0.50x = 77.00 . . . . . . . . . . . . . . .subtract 393

... 77.00/0.50 = x = 154 . . . . . . . . . divide by the coefficient of x

... (262-x) = 108 . . . . . . . . . . . . . . . .find the number of children admitted

8 0
3 years ago
Factorise x^2 + 10x + 16
tensa zangetsu [6.8K]
Answer:

(x + 2) (x + 8)

Explanation:

x^2 + 10x + 16
(x + 2) (x + 8)
7 0
3 years ago
I really need help with this Triangle problem. ​
dedylja [7]

Answer:

12

Step-by-step explanation:

Here we use SOHCAHTOA

Seeing as we have the hypotenuse and we are working to find out the opposite, we use SOH

Sin(x)= Opposite/Hypotenuse

Sin(45) = x/12\sqrt{2} \\

×12 root 2

sin(45) times 12 root 2=  12

x=12

3 0
3 years ago
Describe the pattern.<br> 0.03, 0.3, 3, 30, 300, 3,000
kodGreya [7K]
The next number is 30,000. Each time you would multiply three.

Hoped this helped.

~Bob Ross®
5 0
3 years ago
Read 2 more answers
Suppose a 95% confidence interval for µ turns out to be (1,000, 2,100). To make more
Aloiza [94]

Answer:

A. Increase sample size

Step-by-step explanation:

From the formula for estimating the confidence level interval for the mean:

X - Z × s/sqrt n where; X = sample mean; Z = z value corresponding to 95%;

s = standard deviation and n = sample size

It is evident from the equation that the confidence interval for the mean is inversely proportional to the sample size (n), hence increasing the sample size will result in a reduced interval width.

8 0
3 years ago
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