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RSB [31]
3 years ago
10

When a number is decreased by 20% of itself, the result is 20. What is the number?

Mathematics
1 answer:
MrRa [10]3 years ago
4 0
Decreased by 20% means multiplied by 80%
80% of number=20
divide both sides by 4
20% of number=5
times 5 both sides
100% of number=25

the number is 25
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the price of an item has been reduced by 95%. the original price was $75. what is the original sale price
Natalka [10]

3.75$ is the price of the item after the 95% price reduction.

3 0
2 years ago
Janet researcher compares the math placement scores of college applicants who have, or have not taken a special college preparat
riadik2000 [5.3K]

Answer:

Step-by-step explanation:

Independent Variable (IV):  Special college preparation program

How will you describe the IV: Independent variable or known as manipulated variable is a variable where the researcher purposely manipulate the variable to see how it affect the results of the experiment.

Dependent variables (DV): Math placement scores of college applicants

How will you measure the DV: DV can be measured by recording the math placement scores of each applicants who have or have not taken the special college preparation program.

Explanation: In this case, the researcher wants to see how taking special college preparation program (IV) can affect the math placement scores of the applicants (DV). Explanation: In this case, the researcher wants to see how taking special college preparation program (IV) can affect the math placement scores of the applicants (DV).

Hypothesis:

If the applicants take the special college preparation program, the applicants will have higher math placement scores compared to the one who have do not take the program.

8 0
3 years ago
PLS HELP ASAP ILL GIVE BRAINLKEST PLS THANKS
allochka39001 [22]

Answer:

y = 3x

Step-by-step explanation:

Let's select two points from the given graph.

(1,3) (3,9)

Now, let's use slope formula to find the slope.

m = y2-y1/x2-x1

= 9-3/3-1

= 6/2

= 3

Let's substitute/plug this value into the slope-intercept form.

y = 3x + b

We can see that the y-intercept is 0, from the graph.

b = 0

Therefore,

y = 3x

4 0
2 years ago
Solve for f, what is f
Nutka1998 [239]

Answer:

f = 1

Step-by-step explanation:

-f + 2 + 4f = 8 - 3f

-f + 4f + 3f = 8 - 2

6f = 6

f = 6/6

f = 1

Hope it helps!!

6 0
3 years ago
Read 2 more answers
Select any solutions that have the same solution set as: 2x+3=13-5x
Alex_Xolod [135]
C is one of the answers
6 0
2 years ago
Read 2 more answers
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