Answer:
Step-by-step explanation:
Remark
You can use a formula to get the right answer. Otherwise you will use a lot of paper adding 100 numbers together.
Givens
A = 1
L = 100
n = 100 numbers to be added together. There are 100 numbers between 1 and 100 numbers inclusive.
Formula
Sum = (A + L)*n/2
Solution
Sum = (1 + 100)*100/2 Substitute in the givens. Add what is inside the brackets
Sum = (101) * 100 / 2 Divide by 2
Sum = 101* 50 Multiply
Sum = 5050 Answer
Answer:
x = 12
Step-by-step explanation:
Let's use the distributive rule first for both 5(x - 1) and 7(x + 1). When using the distributive rule to expand parentheses, remember to find the sum of the product of the "outside number" with each of the "inside numbers".
5(x - 1): 5 is the outside number and both x and -1 are the inside numbers.
5 * x + 5 * (-1) = 5x - 5
7(x + 1): 7 is the outside number and both x and 1 are the inside numbers.
7 * x + 7 * 1 = 7x + 7
Now, we can put these back into the equation:
5x - 5 + 3x = 7x + 7
Combine all the x's and the constants:
8x - 5 = 7x + 7
x = 7 + 5 = 12
Thus, the answer is x = 12.
Hope this helps!
Answer:
Step-by-step explanation:
Percent literally means hundredth
%=p/100 so
p/100=3/10 so multiply each side by 100
p=300/10
p=30%
p/100=2/50 multiply each side by 100
p=200/50
p=4%
So you can see the pattern here, multiply the fraction by one hundred and you have the ‘percentage’.
Answer:
fg(4) = 6
Step-by-step explanation:
f(x) = -x + 7
g(x) = x - 3
fg(x) = -(x-3) + 7
= -x + 3 + 7
fg(4) = -4 + 10
= 6