Answer:
11.27
Step-by-step explanation:
Infinitely many because if you subtract 7x from both sides, you get 4 = 4, which is true at all times no matter what x is.
Answer:
x=-1
Step-by-step explanation:
The lines stand for absolute value ( how far a number is from 0), so each number should be a positive, then you just solve for x. Isolate x, then divide on both sides, and you should get -x=1, which is equal to x=-1.
Answer:
he bought 1 pound
Step-by-step explanation:
1/8 + 7/8 = 7+1=8, same denominator so it stays, =8/8=1
Answer:
6.5%
Step-by-step explanation:
Percentage error formula =
|Estimated value - Real value|/Real value × 100
From the above question,
Estimated value = 17,466
Real value = 16,400
Percentage error = |17,466 - 16,400|/16,400 × 100
= 1066/16,400 × 100
= 0.065 × 100
= 6.5%
Therefore, the percent error = 6.5%
