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GarryVolchara [31]
3 years ago
7

8th graders can solve 7 problems in 14 minutes. How long with it take them to solve 37 problems?

Mathematics
1 answer:
xxMikexx [17]3 years ago
5 0

Answer:

74 minutes

Simple Solution:

If you use common sense you can just look at the ratios and find that 14 is 7 twice. You apply the same pattern to 37 and you get 74.

Explanation:

Convert the word problem into proportional relationships (Ratios). You should get (7/14) and (37/?). Divide 37 by 7 (Use a calculator for this). Multiply the quotient by 14 to get a final answer of 74.

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Round to the nearest ten thousand 905154
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You want to round 905,154 to the nearest ten-thousands place. The ten-thousands place in your number is shown by the bold underlined digit here:

9<em><u>0</u></em>5,154

    To round 905,154 to the nearest ten-thousands place...

    The digit in the ten-thousands place in your number is the 0. To begin the rounding, look at the digit one place to the right of the 0, or the 5, which is in the thousands place.

    Since the 5 is greater than or equal to 5, we'll round our number up by

        Adding 1 to the 0 in the ten-thousands place, making it a 1.

    and by changing all digits to the right of this new 1 into zeros.

The result is: 910,000.

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3 years ago
3. The perimeter of a rectangular playing field is 504 yards. The area of the
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The perimeter is twice the sum of the length and the width:

P = 2(w+l)

The area is the product of the dimensions:

A = wl

So, the system is

\begin{cases}w+l=504\\w\cdot l=14276\end{cases}

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The graph of function p is shown on the grid. The coordinates of the x-intercepts, the y-intercepts, and the vertex are integers
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If two of these shapes are randomly chosen, one after the other without replacement, what is the probability that the first will
aleksandrvk [35]

Answer:

P(T\ n\ S) = \frac{1}{14}

Step-by-step explanation:

*Missing Part of the Question*

4 stars

5 triangles

3 circles

3 squares

Required

Determine the probability of triangle being first then square being second

Total = 4 + 5 + 3 + 3

Total = 15

Represent the triangle with T and square with S

So, we're solving for P(T n S)

P(T\ n\ S) = P(T) * P(S)

Solving for P(T)

P(T) = \frac{n(T)}{Total}

P(T) = \frac{5}{15}

Solving for P(S)

The question implies a probability without replacement;

Hence Total has now been reduced by 1

Total = 14

P(S) = \frac{n(S)}{Total}

P(S) = \frac{3}{14}

Recall that

P(T\ n\ S) = P(T) * P(S)

P(T\ n\ S) = \frac{5}{15} * \frac{3}{14}

P(T\ n\ S) = \frac{15}{15 * 14}

P(T\ n\ S) = \frac{1}{14}

Hence, the required probability is

P(T\ n\ S) = \frac{1}{14}

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