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3 years ago

Which equation calculates the number of 1/3-foot pieces that can be cut from a piece of

Mathematics

1 answer:

harina [27]3 years ago

8 0

Answer:

$7:\dfrac{1}{3}=21$ pieces

Step-by-step explanation:

Suppose you have a 7 feet long wood.

You need to find how many $\frac{1}{3}$ -foot pieces can be cut from this wood.

To find this number of pieces, you have to divide the whole length of the wood by the length of one piece:

$7:\dfrac{1}{3}=\dfrac{7}{1}\cdot \dfrac{3}{1}=21$

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Citrus2011 [14]

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3 years ago

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A frequency table of grades has five classes (A, B, C, D,F) with frequencies of 4, 10, 17, 6, and respectively. Using percentage

fiasKO [112]

We have the frequencies for each of the grades. We can estimate the number of students graded by adding all those frequencies. Let's call N the total number of grades:

$\begin{gathered} N=4+10+17+6+2 \\ N=39 \end{gathered}$

We have then a total number of grades of 39.

The corresponding relative frequency for a grade is the ratio of the frequency to the total number of "samples", 39 in this case.

Then, for grade A, the relative frequency (RF) will be:

$RF_A=\frac{4}{39}\approx0.10256\approx10.26\text{ \%}$

This will be the fraction of the total grades that are A. Represented as a percentage will be 10.26%, rounded to two decimal places.

Now, to complete the table we do the same for the other frequencies:

For grade B:

$RF_B=\frac{10}{39}\approx0.2564\approx25.64\text{ \%}$

For grade C:

$RF_C=\frac{17}{39}\approx0.4359\approx43.59\text{ \%}$

For grade D:

$RF_D=\frac{6}{39}\approx0.1538\approx15.38\text{ \%}$

For grade F:

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1 year ago

Evaluate if x=4 3x+1 A)2 B)3 C)11/4 D)13/4

mariarad [96]

Step-by-step explanation:

Given

If x = 4 Then

3x + 1 = 3 * 4 +1 = 12 + 1 = 13

The answer should be 13.

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3 years ago

Help 8th grade math pls ;-;

Sever21 [200]

Answer:

19.1 feet

Step-by-step explanation:

Length of the ladder = 20 feet

Distance from the ladder to the wall = 6 feet

Height of the ladder on the wall = x

x² + 6² = 20²

x² = 20² - 6²

x² = 364

x = 19.1 feet (Rounded to nearest tenth)

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3 years ago

Solve one-step inequalities Solve for f. f>2*5

Elza [17]

Answer:

f>10

Step-by-step explanation:

f>2*5

Multiply 2 * 5

f>10

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3 years ago