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
Katarina [22]
3 years ago
11

There are 28 students in math class. 22 of them passed the test. What percentage passed the test?

Mathematics
2 answers:
Semenov [28]3 years ago
8 0
You'll have to divide the students that passed by the total number of students and then multiply the answer by 100.

(22/28)*100 = 78.57%

So 78.57% students passed.

Hope this helps :)
Virty [35]3 years ago
4 0
Hello there!

100% = 28 students
    x% = 22

Cross multiply

28 * x = 22 * 100

28x = 2200

x = 2200/28

x = 78.57

Thus,

78.57% of the students passed the test.

You might be interested in
A rectangle measures 15 cm by 4 cm what's it's area
schepotkina [342]
The way you find area is multiplying width times height, so you have to multiply 15 by 4 which equals 60. Therefore the answer is 60
5 0
3 years ago
HELP PICTURE IS SHOWNN
Gnom [1K]
Angle TVU = 1/2 (120 - 12) = 108/2 = 56°

Therefore, the correct answer is D.
7 0
3 years ago
The sum of the angle measures of any triangle is 180 degrees. Angle 2 is twice the measure of angle 1. Angle 3 is 15 degrees les
allochka39001 [22]

Answer:

Angle 1 = 39, Angle 2 = 78 , Angle 3 = 63

Step-by-step explanation:

78/2 = 39

(Angle 2/2 = Angle 1)

78 - 15 = 63

(Angle 2 - 15 = Angle 3)

39 + 78 + 63 = 180

(Angle 1 + Angle 2 + Angle 3 = 180)

7 0
4 years ago
Read 2 more answers
An electrical firm manufactures light bulbs that have a length of life that is approximately normally distributed, with mean equ
kompoz [17]

Answer:

0.62% probability that a random sample of 16 bulbs will have an average life of less than 775 hours.

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, a large sample size can be approximated to a normal distribution with mean \mu and standard deviation \frac{\sigma}{\sqrt{n}}

Normal probability distribution.

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 800, \sigma = 40, n = 16, s = \frac{40}{\sqrt{16}} = 10

Find the probability that a random sample of 16 bulbs will have an average life of less than 775 hours.

This probability is the pvalue of Z when X = 775. So

Z = \frac{X - \mu}{s}

Z = \frac{775 - 800}{10}

Z = -2.5

Z = -2.5 has a pvalue of 0.0062. So there is a 0.62% probability that a random sample of 16 bulbs will have an average life of less than 775 hours.

5 0
4 years ago
Michael buys a basket of mangoes on sale for $4 before tax. ​ ​The sales tax is 12% . ​ ​What is the total price Michael pays fo
expeople1 [14]

Answer:

4.48

Step-by-step explanation:

4.00 + 12%(.48)= 4.48

4 0
4 years ago
Other questions:
  • Which function is represented by the graph?<br> D|-x+ 31<br> D - x + 31<br> -|x1 + 3<br> |-x] + 3
    14·1 answer
  • Are the lines with equations 2x -3y = 8 and -x + 4y=2 parallel, perpendicular, or neither
    11·1 answer
  • If the original price is $500 and the sale price is 275, then what is the didcount
    10·2 answers
  • Can someone please let me know if these are the correct answers
    9·1 answer
  • Find the slope of the line that passes through (10,7) and (1,9)
    9·1 answer
  • A teacher wrote the following part of a chemical equation
    11·2 answers
  • The distance between two cities is 600 miles. The two cities are 4 inches apart on the map. What is the scale of the map?
    5·1 answer
  • What is the solution to |2x + 3| = 15? A. x = 6 B. x = 6 or x = -6 C. x = 6 or x = -9 D. No solutions exist.
    12·1 answer
  • Which is more 8.83 or 8.9
    12·2 answers
  • ANSWER ASAP PLEASE!
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!