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3 years ago

Ms. Burger has graded 45 tests. This represents 60% of her 3 math classes. How many math students does Ms. Burger teach?

2 answers:

5 0

To find answers like this, you have to divide the percentage into the number given so:
45 / .60 = 75
She teaches 75 math students

Roman55 [17]3 years ago

4 0

- - To start off you are going to divide:

60%=0.60 (.60)

$\frac{45}{.60} =75$

Therefore 75 is your final answer.

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Andre45 [30]

Answer: 20

Step-by-step explanation:

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Rearrange the formula V = 1 3 πr2h for h. A) h = 3V πr2 B) h = V 3πr2 C) h = 3πr2 V D) h = πr2 3V

stiks02 [169]

Answer:

Option a) $h=\frac{3V}{\pi r^{2} }$

Step-by-step explanation:

The given formula seems to represent the volume of right circular cone. The correct formula is:

$V=\frac{1}{3} \pi r^{2} h$

We have to rearrange the formula for h. This means we have to move h on one side of the formula and all the other variables and constants on the other side of the equation. This can be done as shown below:

$V=\frac{1}{3} \pi r^{2} h\\\\3V=\pi r^{2} h\\\\h=\frac{3V}{\pi r^{2} }$

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3 years ago

Choose the system of inequalities that best matches the graph below.

lapo4ka [179]

Answer:

D) $y\:$ , $y\:>\:-x$

Step-by-step explanation:

The blue boundary line has a y-intercept of 2 and a slope of 2.

It has equation : $y=2x+2$

Since the boundary line is not solid and the lower half plane of this line is shaded, its inequality is

$y\:$

The blue boundary line passes through the origin and has slope $-1$ .

Its equation is $y=-x.$

Since the boundary line is not solid and the right half-plane is shaded, its inequality is $y\:>\:-x$

The correct choice is D.

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3 years ago

John’s weekly salary is 478.25. What is john’s annual salary?

sasho [114]

478.25 times 4(weeks in a month) =1913

1913 times 12 (months in a year)
EQUALS AROUND 22,956 a year , that would be your annual salary.

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3 years ago