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Elina [12.6K]
3 years ago
13

Area of a circle mathswatch answrts

Mathematics
1 answer:
hichkok12 [17]3 years ago
4 0

Answer:

The area of a circle can be calculated by using the formula:

A = πr²

Step-by-step explanation:

I'm assuming that you are asking about how to calculate the area of a circle, so this formula would be it, where the symbol 'π' is pi, a number which never ends, but in calculations is typically rounded to 3.14. However, on your calculator you may have a button which you can press to find the area of a circle that way.

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Page !
ANTONII [103]

Answer:

19 orders of tea

57 orders of collee

Step-by-step explanation:

find 1/4 of the 76

76/4=19

multiply by 3

19x3=57

8 0
3 years ago
The sum of two numbers is 27. One number is 3 more than the other. Write and solve a system of equations to find the two numbers
givi [52]
X + y = 27
x = y + 3

y + 3 + y = 27
2y + 3 = 27
2y = 27 - 3
2y = 24
y = 24/2
y = 12

x = y + 3
x = 12 + 3
x = 15

ur numbers are 12 and 15
7 0
3 years ago
Read 2 more answers
If 2 over 5 tons of concrete covers 5 over 6 of a wall, how many tons of concrete are required to cover the entire wall?
Dominik [7]

Answer:

A. 12.25 tons

Step-by-step explanation:

We will let x represent the amount required to cover the entire wall.

We can divided 2/5 by 5/6 to solve for x

2/5 divided by 5/6=x

When you divide by a fraction, you can always multiply by the reciprocal (flipped number).

Our new equation is:

2/5·6/5=12/25

8 0
2 years ago
Polly bought a cracker for $3 and then bought a parrot for $4. By how much did Polly's account change after her transactions?
nikitadnepr [17]

Answer: -7$ or down by 7$

Step-by-step explanation: Her account went down by 7 or x - 7.

Hope this helped!

Mark Brainliest if you want!

8 0
3 years ago
A sample of 100 janitors in a certain school district found that the average time each janitor had worked for the school distric
Crank
First, we get the standard error of the mean using
σm = σ / √N
= 5 / √100
= 0.5

Next, we subtract and add 1.96 standard deviations from the mean (since the confidence interval is 95%). So,
8 ±1.96 (0.5)
= 8 <span>± 0.98

The answer is
</span>E) 8±0.98
8 0
3 years ago
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