<h3>
Answer: 10/9 hours</h3>
Work Shown:
3/20 of a yard = 1/6 of an hour
(20/3)*(3/20 of a yard) = (20/3)*(1/6 of an hour)
1 yard = 20/18 of an hour
1 yard = 10/9 of an hour
In the second step, I multiplied both sides by 20/3 to have that initial "3/20 yard" turn into "1 yard".
The improper fraction 10/9 is equivalent to the mixed number 1 & 1/9. Both are roughly equivalent to the decimal value of 1.11; so it takes roughly 1.11 hours for Jerry to mow the full lawn.
Answer:
Y=7.5
Step-by-step explanation:
Answer:
x = 0
Step-by-step explanation:
Step 1: Write equation
9x - 7 = -7
Step 2: Solve for <em>x</em>
- Add 7 to both sides: 9x = 0
- Divide both sides by 9: x = 0
Step 3: Check
<em>Plug in x to verify it's a solution.</em>
9(0) - 7 = -7
0 - 7 = -7
-7 = -7
Answer:
the answer is 2√2.
Step-by-step explanation:
5(8-8x^2)=8
or,40-40x^2=8
or,40-8=40x^2
or,32=40x^2
or,32/40=x^2
or,4/5=x^2
or,√4/5= x
therefore.x=√4/5
Answer:
x=3; y= -10
I will prefer addition of equation instead of substitution, but you asked how to substitute
Step-by-step explanation:
-x+y=-13
y=x-13
3x-(x-13)=19
3x-x+13=19
2x=6, x=3
-3+y=-13, y=-13+3, y=-10