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
mafiozo [28]
3 years ago
9

What is –9 – (–13) and how do you solve

Mathematics
1 answer:
olga_2 [115]3 years ago
4 0
The answer is 4. you distribute the negative to make a positive sign and then add
You might be interested in
Length = 25cm, bredth =60 cm, Volume = 7500cm^3. Find height of a cuboid.
elena-14-01-66 [18.8K]

Answer:

height = 5cm

Step-by-step explanation:

Volume of the cuboid = length x breadth x height

7500 = 25 x 60 x height

height = 7500 / 1500

height = 5

8 0
3 years ago
Read 2 more answers
A 6-pound container of detergent costs $4.38. what is the price per pound?
lesya692 [45]

Answer:

.73 per pound

Step-by-step explanation:

Take the total cost and divide by the number of pounds

4.38/ 6

.73 per pound

7 0
3 years ago
Write and solve an inequality.
TEA [102]

Answer:

ok

Step-by-step explanation:

4 0
2 years ago
A study claims that the combination of vitamin C with vitamin E is more effective for preventing the flu than vitamin C alone. I
victus00 [196]

1) In this study, the control group is the first group of 310 subjects that were instructed to take only 600 mg daily of vitamin C. (Option C; that is, group 1).

2) The study is not Blind (Option C).

In an experimental setup to test a theory, A control group is the set of experimental participants that the theory to be tested isn't applied upon.

In the case of testing a new treatment, the control group is the group that the new treatment isn't administered.

For this question, the experiment was set up to test the effectiveness of a combination of vitamin A and vitamin E in treating flu cases rather than using vitamin C alone. Group A is the only group that only the old treatment alone is applied to; group 1 participants received no dosage of the new combination of treatments to be tested involving vitamins A and E, unlike the two other groups.

It is obvious now why the experimental participants of group 1 are the control group.

2) A blind experiment/study is one in which the participants don't know which group they belong to, whether they are in the control group or the other experimental group. Like in this case, if this was a blind study, the participants wouldn't know which group they belonged to or which treatment is administered to them.

A double-blind experiment/study is one in which both the conductors of the experiment and the participants in the experiment wouldn't know which group any participant is in. The conductors wouldn't know which participants were in the control or treatment group and the participants too wouldn't have an idea whether they are in the control or treatment group.

To learn more about the vitamin visit: brainly.com/question/24324739

#SPJ4

3 0
1 year ago
In exponential growth functions, the base of the exponent must be greater than 1. How would the function change if the base of t
GrogVix [38]
If the base were 1, then the final value would never change...it would be a constant...
If the base is between zero and one, it is an exponential decay equation, so the final value would continually get smaller and smaller...
3 0
3 years ago
Read 2 more answers
Other questions:
  • The triangle and the trapezoid have the same area. Base b2 is twice the length of base b1. What are the lenghts of the bases of
    10·1 answer
  • Explain how you know that the sum of 12.6 3.1 and 5.4 is bigger than 20
    15·1 answer
  • Given that 1 pound equals 16 ounces, how many pounds are in 116 ounces?
    5·2 answers
  • A herd of 25 horses has 5 white and some horses.What is the ratio of black horses to all horses?
    11·2 answers
  • The mathematical theory that explores the consequences of making the allocation of units to treatments by means of some random m
    15·1 answer
  • Transform each polar equation to an equation in rectangular coordinates and identify its shape.
    5·1 answer
  • Find dydx for xy+x+y=6. Differentiate both sides of the equation with respect to x, and then solve for dydx. Do not substitute f
    9·1 answer
  • What is the median of the data 5,4,3,4,2<br> pls help me asap
    14·2 answers
  • HELP MEEEEEE I GIVE BRAINLIST
    15·1 answer
  • three-quarters of a pile of bricks were used for a certain project. when two thirds of the reminder had been used, 50 bricks wer
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!