Answer:
No mistake
Step-by-step explanation:
2x + y = 5
x - 2y = 10
y = 5 - 2x
x - 2(5 - 2x) = 10
x - 10 + 4x = 10
5x - 10 = 10
5x = 20
x = 4
2(4) + y = 5
y = -3
She made no mistake
You can check by plugging in x = 4 and y = -3 into the original equations . They fit exactly.
B. 5 cm, 6 cm, 7 cm . because the sum of two sides should be greater then the 3rd side
The amount of girls in the club is 18 out of the 32 members.
To find the amount of boys there, we subtract 18 out of 32
32 - 18 = 14
so there are 14 boys in the club
Now to find the ratio of girls to boys...
18/14
simplified to 9/7 (option D.)
Hope this helps :)
Answer:
C. (2,4)
Step-by-step explanation:
