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
steposvetlana [31]
2 years ago
6

A gumball machine has 130 red gumballs. If the red gumballs are 25% of the total number of gumballs, how many gumballs are in th

e gumball machine?
A. 520
B. 32.5
C. 105
D.155
Mathematics
2 answers:
Ad libitum [116K]2 years ago
8 0

Answer:

A

Step-by-step explanation:

100/25=4

130x4=520

Kaylis [27]2 years ago
6 0
The answer is A 520.
You might be interested in
If y varies directly with x and y = 25 when x = 5, what is the value of k? how does this work when y = kx?
Savatey [412]
If y = 25 and x = 5

25 = 5k

k = 5
3 0
3 years ago
Read 2 more answers
Solve 15x+3y=9,10x+7y=-4
TiliK225 [7]

Answer:

x = 1, y = -2

Step-by-step explanation:

15x + 3y = 9 (1)

10x + 7y = -4 (2)

3 × (2) - 2 × (1)

3 × (2)

30x + 21y = -12 (3)

2 × (1)

30x + 6y = 18 (4)

(3) - (4)

15y = -30

y = -30 / 15

y = -2

sub y = -2 into (1)

15x + 3y = 9

15x + (3 × -2) = 9

15x - 6 = 9

15x = 9 + 6

15x = 15

x = 15 / 15

x = 1

4 0
3 years ago
Please help! 10 points! Brailiest, stars, and hearts! Help! Please!
sdas [7]

Answer:

-0.1, 0, 0.8, 1.2, 1.6

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
The manager of a factory wants to compare the mean number of units assembled per employee in a week for two new assembly techniq
antoniya [11.8K]

Answer:

The most appropriate inferential statistic test in the present situation is the;

b. Two-sample t-test

Step-by-step explanation:

From the question, we have;

The number of subjects in each sample, n₁ = 100

The number of samples = 2

The nature of the test = To compare the two means

The value of the population standard deviation, σ = Unknown

From the given parameters, we have;

The t-test is a method of inferential statistics for determining whether the difference between the mean of two groups is significant, that is if the observed difference are due to chance, where the groups are likely to have some characteristics that are related

The t-test is utilized when testing an hypothesis, and it is used for small samples, where the population standard deviation is unknown

The types of t-test used are;

a) One-sample t-test

b) Two-sample t-test

c) Paired Sample t-test

Therefore, a two-sample t-test is most appropriate.

3 0
2 years ago
Katy buys 4 DVDs every 2 weeks how many will she buy in 10
malfutka [58]

If she maintains her average amount of movies bought every week, then she will buy 20 DVDs in 10 weeks. Explanation: she buys 4 every week, so if we want to find out how many are in 10 weeks, we must multiply two until we get to 10 ( five weeks ) then multiply that buy her average of movies. And that is how we get the answer of 20 DVDs! ( her at least I did )

Anyways, hope this helps!

5 0
3 years ago
Read 2 more answers
Other questions:
  • Can anyone help with this please
    8·2 answers
  • How to do 2(x-5)-8=20
    8·2 answers
  • 18<br>-20 please find the answer​
    6·2 answers
  • the marching band ordered 17 pizzas for a party. each party had 8 slices. lisa ate 7 of the slices. how many slices were left fo
    14·2 answers
  • Worth 20 points Il will mark brainiest! :)
    13·2 answers
  • Please help please help please help
    15·1 answer
  • When Dylan checks their school lunch account, the
    10·1 answer
  • The sun shining down on a 19 foot tall post casts a shadow that is 7 feet long. What is the angle of elevation of the sun?​
    9·1 answer
  • 1 point
    7·2 answers
  • Solve this please<br> ⎯.+/⎯.+/
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!