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svet-max [94.6K]
2 years ago
5

Help me plzzzzzzzzzzzzzzzzzzzzzzzzz

Mathematics
2 answers:
SVETLANKA909090 [29]2 years ago
7 0

Answer:

C

Step-by-step explanation:

1. 12+6 = 18 so that's the diameter of the big circle

2. next we take the square of 18 and multiply it by pi (324x3.14)

3. answer: 1017.36

aivan3 [116]2 years ago
5 0

Answer:

254.34

Step-by-step explanation:

12 + 6 = 18/2 = 9

A=πr2=π·92   ≈   254.34

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What is the property that allows you move the parentheses in a problem and still get the same answer
Gnoma [55]
<span> The </span>associative property<span> states that you can add or multiply regardless of how the numbers are grouped. By"grouped" we mean 'how you use parenthesis'. In other words, if you are adding or multiplying it does not matter where you put the parenthesis</span>
3 0
3 years ago
A toy factory sold 120,587 toys in 25 days. If each toy was sold for $58, about how much money did the factory earn in 25 days?
Rina8888 [55]
<h3>Answer: $7,018,000</h3>

This value is a little over 7 million dollars

======================================================

Explanation:

120,587 rounds to 121,000 when rounding to the nearest thousand.

The instructions don't mention rounding 58, so we'll leave it as that

Multiply the values to get

58*121,000 = 7,018,000

which is the estimate of how much money was earned.

-----------

The actual amount of money earned is

58*120,587 = 6,994,046

which isn't too far off of our estimate.

-----------

Note: the value of 25 days is never used. You could have any other number of days you want, and the answer is still the same. This value is probably either filler or some kind of distraction.

6 0
2 years ago
Perform the indicated operation.<br> 6/8 - 3/8
Maru [420]

Answer:

3/8

Step-by-step explanation:

(3/8) Since they have the same denominator, you can subtract the second numerator from the first so 6 minus 3 is 3. So 3/8

3 0
3 years ago
Perform the operation (5x^2 – 9) + (-10x + 7)
Stels [109]

Answer:

5x^2−10x−2

Step-by-step explanation:

I hope this is what you are looking for I just added (5x^2 – 9) + (-10x + 7)

8 0
2 years ago
Read 2 more answers
What is the vertex of the graph of y = x^2+ 4x?
xxTIMURxx [149]

Answer:

(-2, -4)

Step-by-step explanation:

You can complete the square of the equation to get

y+(4/2)^2 = x^2+4x+(4/2)^2

y+4 = x^2 + 4x + 4

y+4 = (x+2)^2

y = (x+2)^2 - 4

This gives the form y = a(x-h)^2 + k where (h, k) is the vertex of the equation. You can also arrive at the same conclusion by making some observations of the equation. (x+2)^2 minimum value is going to be 0 since and negative values resulting from x+2 is going to become positive because of the square. So the minimum value is when x+2 is 0 or when x is equal to -2 and when it's at that minimum value of 0 it's going to have 4 subtracted from it which gives the vertex of (-2, -4)

6 0
1 year ago
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