Answer:
x-30y=100 and 10y=x-20
Step-by-step explanation:
The right fraction represents the percentage; 42 over 100 (100 is the total), or 0.42.
The left fraction is the part number over the whole number. The whole number is unknown, so we use 'x'.
Your answer is 75.
Answer:
Step-by-step explanation:
Since 34 Lbs of seed is needed for 5 Acre's, You will need two find 1/5th of 34.
1/5 in decimal form is 0.2
34*0.2= 6.8
In order to cover 1 Acre of land you will need 6.8 lbs of seed.
Hope this helps!
Answer:
17
Step-by-step explanation:
We are given the expression find x + 9 if x = 8.
When a certain number has a variable and the value of the variable is known, all you have to do is plug in the variable amount into the equation, therefore :
x is 8 , so we plug in 8 for x
x + 9 =
8 + 9 = 17
