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irina [24]
3 years ago
10

If 95 % of the students are present in a school and the number of absent students is 25, find the total number of students in th

e school?
Mathematics
1 answer:
Karolina [17]3 years ago
8 0
100 minus 95 equals 5
25 equals 5%
100 divided by 5 equals 20
20 times 25 equals 500
500 minus 25 equals 475
Answer:475 students present/ 500 students total in school
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Please help me thank you.
Alona [7]

Answer:

\large\boxed{1.\ (4)^{-3x^2}=\left(\dfrac{1}{4}\right)^{3x^2}}

\large\boxed{2.\ ab^{-3x}=a\left(\dfrac{1}{b}\right)^{3x}=a\left[\left(\dfrac{1}{b}\right)^3\right]^x}

Step-by-step explanation:

Use:\ a^{-n}=\left(\dfrac{1}{a}\right)^n\\------------\\\\(4)^{-3x^2}=\left[(4)^{-1}\right]^{3x^2}=\left(\dfrac{1}{4}\right)^{3x^2}

Use:\ a^{-n}=\left(\dfrac{1}{a}\right)^n\ and\ (a^n)^m=a^{nm}\\--------------------\\\\ab^{-3x}=a\cdot b^{-3x}=a\left[(b)^{-1}\right]^{3x}=a\left(\dfrac{1}{b}\right)^{3x}\\\\ab^{-3x}=a\left(\dfrac{1}{b}\right)^{3x}=a\left[\left(\dfrac{1}{b}\right)^3\right]^x

8 0
2 years ago
Solve the equation by completing the square 5x(x+6)=-50
motikmotik
First lets distribute the 5x 
5x^2 + 30x = -50

Lets divide every term by 5 
x^2 + 6x = -10 

To complete the square we have to half the b value, which in this case is 6. Then square it. 
Half of 6 is 3, 3 squared is 9 

Add that to both sides of the equation 
x^2 + 6x + 9 = -1 

Find the binomial squared
(x+3)^2 (If you're wondering how i got that please comment) 

(x+3)^2 = -1 

Take the square root of the equation of both sides
(x+3) = +/- i
x = -3 +/- i
x = -3 - i
and 
x = -3 + i


3 0
2 years ago
Can some one help me please
frutty [35]
I believe The answer is B
6 0
2 years ago
Carla packed this box with one centimeter cubes what is the volume of the box plus is it cubic centimeters or just centimeters o
vesna_86 [32]

Cubic centimetres since they are cubes. Did you add any picture of the question? There seems to be none.

7 0
2 years ago
Read 2 more answers
Find the common difference of the arithmetic sequence -6, 2, 10
Butoxors [25]

Step-by-step explanation:

-6+8=2 by -6 will cut from 8 and remain 2.

2+8=10 by same way 8 will added to 2 and got 10.

I hope it will help you

7 0
3 years ago
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