1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sophie [7]
3 years ago
8

In order to determine students’ preferences, Ms. Lewis took a random survey of 60 high school students and found that 42 of them

preferred multiple-choice tests to free-response typed tests. Use the results to predict the approximate number of students out of 180 who prefer multiple-choice tests?
Mathematics
1 answer:
Leya [2.2K]3 years ago
7 0

Answer:

126 students

Step-by-step explanation:

42/60 = 126180

You might be interested in
A culture of bacteria has an initial population of 650 bacteria and doubles every 9 hours. Using the formula Pt=P0⋅2tdP_t = P_0\
Ghella [55]
So is doubling, first off, meaning, if the current amount say P, then when it doubles is 2P, or double that, or P + P, so the rate of growth is 100%, since it's doubling.

and is doing it every 9 hour cycle, thus

\bf \textit{Periodic/Cyclical Exponential Growth}\\\\
A=P(1 + r)^{\frac{t}{c}}\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{initial amount}\to &650\\
r=rate\to 100\%\to \frac{100}{100}\to &1.00\\
t=\textit{elapsed time}\to &10\\
c=period\to &9
\end{cases}
\\\\\\
A=650(1 + 1)^{\frac{10}{9}}\implies A=650(2)^{\frac{10}{9}}\implies A=650\sqrt[9]{2^{10}}
4 0
3 years ago
Explain how to find the LCM of 8 and 10
Bumek [7]

you need to find the least common factor of 8 and 10.

Step-by-step explanation:

simple

7 0
4 years ago
Read 2 more answers
Joey Chestnut is trying to break his own world record.After 1 minute of competition, joey has eaten 10 hotdogs.Joey wants to kno
Jobisdone [24]

So we know that 1 minute = 10 hotdogs,

we multiply 1 and 10 by 9 to get 9 minutes = 90 hotdogs.


I believe the answer is 9 minutes = 90 hotdogs.

5 0
4 years ago
Read 2 more answers
When a fair dice is thrown, what is the probability of getting a number greater than 4? (Reduce to simplest form)
Y_Kistochka [10]

Answer:

I searched the q and this is what I found

Step-by-step explanation:

Explanation: Number greater than 4 are 5 and 6 . So required probability is 26=13.

7 0
3 years ago
X^3-8/x-2<br> simplify and I need an explanation please
Sergeu [11.5K]

Answer: x^2+2x+4

Step-by-step explanation:

The expression given in the exercise is:

 \frac{x^3-8}{x-2}

If you descompose the number 8 into its prime factors, you get that:

8=2*2*2=2^3

Therefore, you can rewrite the numerator of the expression as following:

=\frac{(x^3-2^3)}{(x-2)}

For this exercise you need to remember that for a  Difference of cubes:

a^3-b^3=(a-b)(a^2+ab+b^2)

Then, applying this, you get:

=\frac{(x-2)(x^2+2x+2^2)}{(x-2)}=\frac{(x-2)(x^2+2x+4)}{(x-2)}

Now, it is necessary to remember the following:

\frac{a}{a}=1

Knowing the above, you can say that:

\frac{(x-2)}{(x-2)}=1

Therefore applying this, you get that the simplified expression is:

=x^2+2x+4

8 0
3 years ago
Other questions:
  • Mike observed that 75% of the students of a school liked skating. If 35 students of the school did not like skating, the number
    9·1 answer
  • 1.5(0.8x-1.2) = 0.2x+1.2
    11·2 answers
  • (ˊ・ω ・)please help me with this​
    15·1 answer
  • You have $16 and a coupon for a $5 discount at a local
    10·1 answer
  • Which expression is equivalent to (5y+4) - 2 (7 - 2)
    5·1 answer
  • Translate into an equation and solve. what percent of 625 is 72?
    12·2 answers
  • Slope = 0, y -- int = 1<br> Write the slope-intercep form of the equation of the line
    13·1 answer
  • The sum of the interior angle measures of a triangle is 180°. Angle B is three times the measure of angle A. Angle C is 52°. Fin
    11·1 answer
  • PLEASE HELP ME ANSWER THESE 2 QUESTIONS PLEASE PLEASE PLEASE ASAP
    15·1 answer
  • From a group of 13 women and ​12 men, a researcher wants to randomly select 8 women and 8 men for a study. In how many ways can
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!