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3 years ago

The grades for 200 students at a middle school are represented in the graph below how many more students earned Cs then Ds

Mathematics

1 answer:

Xelga [282]3 years ago

3 0

Answer:

B. 60

Step-by-step explanation:

There are a total of 200 students here, and 45% got Cs, to find how many got Cs, multiply 200 by 45%, or 0.45: 200*0.45 = 90, 90 people got Cs.

15% got Ds, multiply 200 by 15%, or 0.15 to get 30, 30 got Ds

The amount who got Cs minus the amount who got Cs is 90 - 30 = 60, 60 more students got Cs than Ds

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postnew [5]

Answer:

$x = 14$

Step-by-step explanation:

To find x, the following equation is generated given the available information:

$\frac{(x + 7) + x)}{x + 7} = \frac{12 + 8}{12}$

$\frac{2x + 7}{x + 7} = \frac{20}{12}$

$\frac{2x + 7}{x + 7} = \frac{5}{3}$

Cross multiply

$3(2x + 7) = 5(x + 7)$

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Collect like terms

$6x - 5x = - 21 + 35$

$x = - 21 + 35$

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8 0

3 years ago

Anyone know this answer?

damaskus [11]

La of sine:

sinC/c = sinB/b==> sin 37°/8 = sin B/12 ==> sin B = 0.903

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sin(64.5) = sin(180°-64.5°) ==> B = 64.5° or 115.5°

6 0

3 years ago

Soon-Jin sent out 48 invitations, this was 4/5 of all her invitations. How many invitations will she send out in total?

stepladder [879]

If 4/5 of the total is 48, the total can be found by dividing it by 4 and multiplying it by 5:
48/4 = 12
12*5 = 60.

3 0

3 years ago

Read 2 more answers

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disa [49]

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3 years ago

The graph of a proportional relationship passes through (6, 42) and (1, y). Find y.

nadya68 [22]

well, another way to word it will be, we know "x" and "y" are directly proportional, we also know that x = 6 when y = 42, what is "y" when x = 1?

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4 years ago