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Crank
2 years ago
7

What is the area to a 2 3/4 inch square?

Mathematics
1 answer:
Vinvika [58]2 years ago
5 0
Since every side of a square is the same length, and the formula to find the area is bh you would just do 2.75²

2.75×2.75=7.5625≈7.56

the answer is the area of the square is approximately 7.56u²
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What is the radius of a circle with the equation x^2+y^2+6x-2y+3?
atroni [7]

Answer:

r = √13

Step-by-step explanation:

Starting with x^2+y^2+6x-2y+3, group like terms, first x terms and then y terms:  x^2 + 6x            + y^2 -2y             = 3.  Please note that there has to be an " = " sign in this equation, and that I have taken the liberty of replacing " +3" with " = 3 ."  

We need to "complete the square" of x^2 + 6x.  I'll just jump in and do it:  Take half of the coefficient of the x term and square it; add, and then subtract, this square from x^2 + 6x:     x^2 + 6x  + 3^2 - 3^2.  Then do the same for y^2 - 2y:  y^2 - 2y + 1^2 - 1^2.

Now re-write the perfect square x^2 + 6x + 9 by (x + 3)^2.  Then we have x^2 + 6x + 9 - 9; also y^2 - 1y + 1 - 1.  Making these replacements:

(x + 3)^2 - 9 + (y - 1)^2 -1 = 3.  Move the constants -9 and -1 to the other side of the equation:  (x + 3)^2 + (y - 1)^2 = 3 + 9 + 1 = 13

Then the original equation now looks like (x + 3)^2 + (y - 1)^2 = 13, and this 13 is the square of the radius, r:  r^2 = 13, so that the radius is r = √13.


8 0
2 years ago
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Officials estimate that 320,000 Boston-area partygoers attended last year's Independence Day celebration on the banks of the Cha
Anna11 [10]

40 ton x 2000 = 80,000 pounds

320000/8000 = 40 pounds per person

7 0
3 years ago
12 quarts of soil are used to completely fill 5 flower pots. If each pot holds the same amount of soil, how many quarts will eac
Oksanka [162]

Answer:

2.4 or 12/5 or 2 2/5

Step-by-step explanation:

4 0
2 years ago
A baker uses 13 and one half
dusya [7]

Answer:

She sells four loaves of bread.

Step-by-step explanation:

First, convert you fractions to decimals.

13 1/2 = 13.5

2 1/4 -2.25

Next, divide 13.5 by 2.25.

13.5/2.25=6

Two thirds of 6 is 4.

Therefore, the baker sold four loaves of bread.

6 0
2 years ago
What is your favorit food
Oduvanchick [21]

Answer:

salmon and mashed potatoes

Step-by-step explanation:

yum

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