Ask question

Ask question

All categories

3 years ago

9

tiffany answered 90 percent of the questions on the math test correctly. there were 50 questions in total. how many questions di

d tiffany answer correctly. show work.

1 answer:

Andreas93 [3]3 years ago

3 0

Hi!

Use the percentage formula to solve:

90 * 50 / 100 = 45

Tiffany answered 45 questions correctly.

You might be interested in

Find the slope of (-3,3) and (-21,18)

ZanzabumX [31]

Answer:

-0.8333

Step-by-step explanation:

used omni calculator

https://www.omnicalculator.com/math/slope

3 0

3 years ago

How do I resolve this? <br> Como resuelvo esto?

Nikolay [14]

$\bf \textit{area of a circle}\\\\ A=\pi r^2~~ \begin{cases} r=radius\\ -----\\ A=144\pi \end{cases}\implies 144\pi =\pi r^2\implies \cfrac{144\pi }{\pi }=r^2 \\\\\\ 144=r^2\implies \sqrt{144}=r\implies \boxed{12=r} \\\\\\ \textit{circumference of a circle}\\\\ C=2\pi r\qquad \qquad C=2\pi \boxed{12}\implies C=24\pi$

4 0

3 years ago

Which of the following lines is perpendicular to the line Y = 3x -4

andriy [413]

Answer:

D.

Step-by-step explanation:

When a line is perpendicular to another, their slopes will be opposite reciprocal. For example, 1 would be -1, -3 would be $\frac{1}{3}$ , and $\frac{5}{1}$ would be -5. The equation is written in slope-intercept form:

$y=mx+b$

m is the slope, so find the equation with the opposite reciprocal of 3, $-\frac{1}{3}$ :

$y=-\frac{1}{3} x+4$ is the only option with the correct slope, so the answer is D.

6 0

2 years ago

What's the value of 1/4 - 7/6

Anton [14]

The answer is -11/12

3 0

2 years ago

Does this graph represent a function? Why or why not?

Molodets [167]

Answer:

D

Step-by-step explanation:

This function passes the vertical line test.

The vertical line test test is done by drawing a vertical line anywhere on the graph. If the line goes through two points or more then it isn't a function.

7 0

1 year ago