2 years ago

There are 90 people in the lunchroom. If there are 9 times as many students as teachers, how many students are in the lunchroom?

Mathematics

1 answer:

uranmaximum [27]2 years ago

5 0

Answer:

there are 80 students

Step-by-step explanation:

you divide 9 by 90 to find how many teachers there are, then subtract it by 90

You might be interested in

The population of medfield is 7000 Capitol City's population is 8/25 of Medfields what is capitol city's population

Dmitry_Shevchenko [17]

8/25 of medfield....." of " means multiply

8/25(7000) = 56,000/25 = 2240 <== capital city's population

5 0

3 years ago

Charlie and Andy solve this problem in two different ways.

hammer [34]

Subtracted then divided

5 0

3 years ago

What is the inverse of the function

Evgesh-ka [11]

Answer:

Step-by-step explanation:

let y = f(x) and rearrange making x the subject, that is

y = $\frac{19}{x^3}$ ( multiply both sides by x³ )

x³y = 19 ( divide both sides by y )

x³ = $\frac{19}{y}$ ( take the cube root of both sides )

x = $\sqrt[3]{\frac{19}{y} }$

Change y back into terms of x, then

$f^{-1}$ (x) = $\sqrt[3]{\frac{19}{x} }$ = $\frac{\sqrt[3]{19} }{\sqrt[3]{x} }$ → A

6 0

3 years ago

Given a rhombus, a square, and a rectangle, what must be true of all three quadrilaterals?

Yuliya22 [10]

<span>C.

The diagonals are perpendicular.
</span>

8 0

3 years ago

Solve the equation.

weeeeeb [17]

Inverse Functions. An inverse function goes the other way! Let us start with an example: Here we have the function f(x) = 2x+3, written as a flow diagram: The Inverse Function goes the other way: So the inverse of: 2x+3 is: (y-3)/2 .

6 0

2 years ago