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shutvik [7]
1 year ago
13

BRIANLIEST!!!!! ANSWER THE QUESTIONS

Mathematics
1 answer:
tino4ka555 [31]1 year ago
7 0

Answer:

1. D- All of the above

2. B- The material the acid is poured on

3. C- Mass of the ball

4. A- Temperature

Step-by-step explanation:

2. The control variable is what stays the same so the material the acid is poured on must be the same as different materials have different reactions to acids.

3. The independent variable is what's being changed and in this experiment the mass of the ball is changed each time

4. The independent variable is what's being changed and in this experiment the temperature is different in each cup.

Hope this helped! :)

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In a school, only 13 out of 15 student participate in a competition.what is the probability of the student who do not makes it t
Papessa [141]

Answer:

\frac{2}{15}

Step-by-step explanation:

Number of students participating in the competition = 13.

Total number of students in the school = 15.

Thus ,

the number of students who did not make to this competition =

Total number of students - number of students participated

= 15-13 = 2.

Now ,

probability of the student who do not makes it to the competition

= fraction of students who did not make to this competition from the total number of students .

=\frac{2}{15}.

4 0
3 years ago
Divde 3/4÷5/7 what was the error 5/7÷3/4=5/7*4/3=20/21
Setler79 [48]

instead of changing the 5/7 u change the 3/4

7 0
3 years ago
Verona is solving the equation –3 + 4x = 9. In order to isolate the variable term using the subtraction property of equality, wh
frutty [35]

Answer:

subtract  -3

Step-by-step explanation:

–3 + 4x = 9

Add 3 to each side

This is the same as subtracting -3

-3 + 4x - (-3) = 9 - (-3)

4x = 9 +3

4x = 12

8 0
2 years ago
Read 2 more answers
Restaurant buys a freezer in the shape of a rectangular prism the dimensions of the freezer are shownwhat is the volume of the f
Kisachek [45]
To find the volume of something (freezer in this case) use the formula

Length x width x height

72.5 x 24.5 x 36 = <span>63945


63945 is your answer (if it is inch</span>²)

if not, you will have to use proportions to change it to the correct one

hope this helps
8 0
3 years ago
A coin is fixed so that the probability to get heads in two throws is double the probability. Count the probability that there w
Setler [38]

Answer:

no clue try looking it up on here see what you find

Step-by-step explanation:

i just wanna help but im not very smart

5 0
3 years ago
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