I drew a picture!!
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Maybe you didn't.
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I like to picture things though.
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Ok, a rectangle cut in half.
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Ok, by definition of "half," just multiply the number of rectangles by 2.
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1 x 2 = 2 after cutting the brownies in half.
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2 x 2 = 4 after cutting it in half again.
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4 rectangles now!!
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Doing it the other way... pretend you are starting over from scratch.
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A new batch of brownies!
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But still pay attention to what you already cut.
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Cut down the middle the other direction.
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What's 4 x 2?
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8.
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Now, finally, we multiply the half of the half brownies.
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What's 8 x 2?
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16.
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16 slices.
A circles equation is
(x – h)^2 + (y – k)^2 = r^2
The center is at the point (h, k)
The radius is r.
Your circles equation is:
(x – 2)^2 + (y – 8)^2 = 5^2
Y=X2+28 PEMDAS says first do parentheses
exponent
multiply
divide
add
subtract
the answer is easy just take 2,000 and times it by 2 then 4,000 x 2, then 8,000 x 2, 16,000 x 2, 32000 x 2, 64,000 x 2 <u>the answer is 128,000</u>
Answer:
23 nickels, 39 quarters
Step-by-step explanation:
Let x = the number of quarters
Let y = the number of nickels
x + y = 62 x = 62 - y
.25x + .05y = 10.90
Multiply both sides of the equation by 100 to get rid of the decimal points.
25x + 5y = 1090
25(62-y) + 5y = 1090
1550 - 25y + 5y = 1090
1550 - 1550 - 25y + 5y = 1090 - 1550
-20y = -460
-20y / -20 = -460 / -20
y = 23 nickels
x = 62 - y
x = 62 - 23
x = 39 quarters