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zloy xaker [14]
3 years ago
6

The length of a rectangle is 3 cm greater than it's width. The area of the rectangle is 40 cm². Find the length and width of the

rectangle.

Mathematics
1 answer:
ki77a [65]3 years ago
4 0
I hope this helps you

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The potential energy, P, in a spring is represented using the formula P = 1/2kx2. Lupe uses an equivalent equation, which is sol
sukhopar [10]

Answer:

k=\frac{2P}{x^2}


Step-by-step explanation:

The formula is P=\frac{1}{2}kx^2

<em>We need to solve for k, so we can perform the steps shown below:</em>

P=\frac{1}{2}kx^2\\P=\frac{kx^2}{2}\\2P=kx^2\\\frac{2P}{x^2}=k


Hence, the third answer choice is correct.

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3 years ago
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If a person bikes 6 miles in 15 minutes, how far can she bike in 1.5 hours?
Natalka [10]

Answer:

36\:miles

Step-by-step explanation:

There is <em>one-and-a-half</em> <em>hour</em> in <em>ninety</em><em> </em><em>minutes</em>,<em> </em>so multiply 6 by 15 to get 90, then whatever is done to the bottom is also done to the top, so you <em>square</em> 6 to get 36.

I am joyous to assist you anytime.

8 0
3 years ago
Can you solve this for me
jenyasd209 [6]

The number in the blank box should be 44 because it said that "3 times x and 4 times y is 44".

You need to multiply the first equation by 3:

3x + 3y = 39.

Then, subtract the first equation from the second equation:

3x - 3x = 0

4y - 3y = y

44 - 39 = 5

Your new equation should look like this: y = 5

Now, substitute y = 5 into the first original equation:

x + 5 = 13

x = 8

Ans. (x, y) = (8, 5)

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3 years ago
James has 38 stamps in his stamp collection. He collects about 6 stamps a month. How many stamps will James have in 7 months?
Andrej [43]
80 since he starts off with 38 stamps then gains 6 each month for 7 months (6x7=42) so 42+38=80
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Round 1,490 to the nearest hundred
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The answer is 1,500..
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3 years ago
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