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
-BARSIC- [3]
2 years ago
15

Thirty children from an after-school club went to the matinee. This is 20% of the children in the club. How many children are in

the club?
a) 6
b) 67
c) 150
d) 600
I'm thinking too hard on this question.​
Mathematics
2 answers:
Setler [38]2 years ago
8 0

Answer:

<h2>C)150 </h2>

Step-by-step explanation:

20%=30

x by 5 to get 100%

100%=150

Olegator [25]2 years ago
6 0
You can find the result at attachement

You might be interested in
A student researcher compares the heights of men and women from the student body of a certain college in order to estimate the d
maria [59]

Answer:

(0.6613, 8.3387)

Step-by-step explanation:

Let the heights of men be the first population and the heights of women be the second population. Then

We have n_{1} = 15, \bar{x}_{1} = 69.4, s_{1} = 3.09 and

n_{2} = 7, \bar{x}_{2} = 64.9, s_{2} = 2.58. The pooled

estimate is given by  

s_{p}^{2} = \frac{(n_{1}-1)s_{1}^{2}+(n_{2}-1)s_{2}^{2}}{n_{1}+n_{2}-2} = \frac{(15-1)(3.09)^{2}+(7-1)(2.58)^{2}}{15+7-2} = 8.68

The 99% confidence interval for the true mean difference between the mean height of the men and the mean height of the women is given by (if the samples are independent)

(\bar{x}_{1}-\bar{x}_{2})\pm t_{0.01/2}s_{p}\sqrt{\frac{1}{15}+\frac{1}{7}}, i.e.,

(69.4-64.9)\pm t_{0.005}2.946\sqrt{\frac{1}{15}+\frac{1}{7}}

where t_{0.005} is the 0.5th quantile of the t distribution with (15+7-2) = 20 degrees of freedom. So  

4.5\pm(-2.845)(2.946)(0.458), i.e.,

(0.6613, 8.3387)

5 0
3 years ago
Covert to slope intercept form : 9x - 7y = -7
denpristay [2]
Y= 9/7x + 1 ^^^^^^^^
7 0
3 years ago
How is the volume of a prism calculated?
s344n2d4d5 [400]

Answer:

The volume of a prism is calculated by - Multiplying the area of the base by the height.

My answer might not be correct, but at least I tried

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
The equation is equivalent to u = rst. <br><br> True/ False
Jlenok [28]

The equation r = u/st is equivalent to u = rst .

True

7 0
3 years ago
What is the simplest form of 54/54
krek1111 [17]
1 is the simplest form since the line means division. 54 divided by 54 is 1.
4 0
3 years ago
Read 2 more answers
Other questions:
  • Line l contains points (0, -2) and (6, 6). Point P has coordinates (-1, 5)
    12·1 answer
  • Tuesday’s Hugh temperature was 4 degrees less than Monday’s high temperature
    9·1 answer
  • A photo is printed on an 11-inch by 13-inch piece of paper. The photo covers 80 square inches and has a uniform border. What is
    11·2 answers
  • Solve:<br><br> (2.5x10^6) x (3x10^6)<br><br> (1.1x10^7)/(1.2x10^7)
    5·1 answer
  • Please help this is all my points
    6·2 answers
  • How to write 147,300,000 in one million more
    13·1 answer
  • 1. Subtract:
    14·2 answers
  • How much is 3/4 of 12
    14·2 answers
  • PLEASE HELP ME ASAP!!! GIVING BRAINLIESTTO THE QUICKEST ADN RIGHT ANSWER!!!!!!!
    10·2 answers
  • Sarah saves $1. 5 daily while jessica saves $1 more than sarah each day. Although jessica started saving 10 days later than sara
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!