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storchak [24]
3 years ago
8

You can mow 800 square feet of lawn in 15 minutes at this rate how many minutes will it take you to mow a lawn that measures 600

0 square feet?
Part A write a proportion to represent the problem. Use M to represent the number of minutes. Explain your reasoning.

Part B solve the proportion you wrote in part A. Then use it to answer the problem. Show your work.
Mathematics
1 answer:
Natalija [7]3 years ago
4 0
If you would like to know how many minutes will it take you to mow a lawn that measures 6000 square feet, you can calculate this using the following steps:

800 square feet ... 15 minutes
6000 square feet ... M minutes = ? 

800 * M = 15 * 6000
M = 15 * 6000 / 800
M = 112.5 minutes

This will take 112.5 minutes.
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geniusboy [140]
The length of a rectangle is 4 cm less than twice the width. express as an integer the maximum width of the rectangle when the perimeter is less than 78 cm.
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3 years ago
3. Mrs Green bakes muffins.
Sphinxa [80]

Answer:

85%

Step-by-step explanation:

Monday:

200 x 0.70 = 140

200 - 140 = 60

Tuesday:

400 x ? = 60

400 x 0.85 = 340

400 - 340 = 60

8 0
3 years ago
Which of the following expressions are equivalent? Justify your reasoning,
marshall27 [118]

Answer:

B and D

Step-by-step explanation:

B:

Anything to a negative power means that it is 1/that to the positive power.

E.g. x^-1 = 1/x^1

In other words, anything to the power of a negative switches sides of a fraction (i.e. if in numerator moves to denominator and vice versa.)

1/x^-1 = 1/1/x^1 which is just equal to x, because there are x number of 1/xs in one (1/x * x =1) Therefore Option B is equal to just x.

D: (assuming the first given term is x^1/3 and not X1/3 (?) Correct me if I'm wrong).

x^1/3 * x^1/3 * x^1/3 is also equal to just x.

This is because when multiplying together terms with the same base (x in this case) the exponents just add together, so:

x^1/3 * x^1/3 * x^1/3 = x^(1/3 +1/3 +1/3) = x^1 = x.

Therefore B and D are equivalent because they both equal x.

Hope this helped!

7 0
3 years ago
Ted is asked to multiply 10 to the second power x 18.72. How Should he move the decimal point
nata0808 [166]
10 the second power is 10². 10²=10*10=100. 100*18.72=1,872. Hoped I helped. :)
4 0
3 years ago
What is the perimeter of a rectangle with a length of 4 1/4 inches and a width of 2 5/6 inches?
cestrela7 [59]
I'm fairly sure it's C - even as a prediction, if you add (4x2) and (2x2) it's 12 - and the closest is thirteen, adding on the fractions.
6 0
3 years ago
Read 2 more answers
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