20/7 if you download the app photo math or go to the website symbalo it really helps with order of operations
Answer:
C, 40%
Step-by-step explanation:
0.15 + 0.25 is 0.4 and in percentage that is 40%
X=5 because you plug in the y into the equation y-x=17
Answer:
5280people
Step-by-step explanation:
Given parameters:
Percentage increase of population = 25%
Population now = 6600
Unknown:
Population last year = ?
Solution:
Let the population last year = y;
Then;
Percentage of last years population plus the population of last year should give us this year's population;
(
of y) + y = 6600
0.25y + y = 6600
1.25y = 6600
y =
= 5280people
Last year, there was 5280people in the locality.
3x - 4y = 18 ⇒ 3x - 4y = 18
2x + y = 1 ⇒ 8x + 4y = 4
11x = 22
11 11
x = 2
2x + y = 1
2(2) + y = 1
4 + y = 1
- 4 - 4
y = -3
(x, y) = (2, 3)