Step-by-step explanation:

Answer:
let the two numbers be x and y
x+y=45(equation 1)
x-y=5(equation 2)
from equation (1) y=45-x(equation 3)
substitute 45-x for y in equation 2
x-(45-x)=5
x-45+x=5
x+x-45=5
2x-45=5
2x=45+5
2x=50
x=50/2
x=25
<u>Answer:
</u>
The solution of
for M = 10, N = -5P and P = -2 is 25
<u>Solution:
</u>
From question, given that the value of M is 10 and N is -5p and P is -2
We have to evaluate the value of
,
By substituting the values of M and N, we get

Expanding
:
Here 10 is the base value and 2 is the exponent value. So the base term 10 is multiplied by itself two times.

Similarly expanding
:
Here -2 is the base term and 2 is the exponent value. So the base term -2 is multiplied by itself two times.

So the equation
becomes,

By dividing 100 by 4 , we get the result as 25
Hence the solution of
when M = 10 and P = -2 is 25
Answer:
75%
Step-by-step explanation:
The percent increase is calculated as
percent increase =
× 100%
increase = 7 - 4 = 3, thus
% increase =
× 100% =
= 75%