First things first, write out your equation without the substitution.
2x+ 2y= 10
Now, put in the substitution.
2x+ 2• 2= 10
Combine like terms.
2x+ 4= 10
Now that your equation it simplified, you need to reverse the problem and put everything on the other side.
2x+ 4= 10
- 4 - 4
2x = 6
2x=6
— —
2 2
X= 3
So the final answer is x=3
3 - 1/8a = 1/4
The goal is to isolate "a" and its coefficient to make the simplification process easier.
Start by subtracting 3 from both sides:
3 - 3 - 1/8a = 1/4 -3
-1/8a = 1/4 - 3
Next, multiply 3 by 4/4 to convert it into a fraction:
-1/8a = 1/4 - [3 • (4/4)]
-1/8a = 1/4 - 12/4
-1/8a = - 11/4
Multiply both sides by -8:
(-8) -1/8a = - 11/4 (-8)
a = 88/4 = 22
Therefore, a = 22.
Answer:
I'm not quite sure, but I think 3. v= 5 × 32 × 10
and the rest I'm not sure.
Answer:
0.25
Step-by-step explanation:
simplify 4/16 to 1/4.
multiply 1/4 by 25/25.
then you get 25/100, which equals to 0.25
Answer:
The answer for A is 
.
The answer for B is <em>4 cans. </em>
The answer of C is <em>$98.</em>
Step-by-step explanation:
A-
Multiply 2.5 by 3.5 and you'll get 8.75 Multiply 3.5 by 1.2 and you'll get 4.2; divide and your answer will be 2.1 Add to 8.75 Get 10.85 Subtract from area of door ( 3m because 1.5 times 2 is 3) and you'll get 7.85
B-
Divide 7.85 by 2.5 and you'll get 3.104; round that and you'll get 4 cans.
C-
Multiply the amount of cans (4) by 24.5. Do this and you'll get $98.
Hope this was helpful!!!
