Answer:
Percentage error is 0.0024 %
Step-by-step explanation:
Initial average distance between Earth and moon = 384467 km
Distance measure by the scientist = 384476 km
Total variation in the distance calculation = 384476 – 384467 = 9 km.
Now we can find the percentage by dividing the variation in distance from the initial measurement and then multiply with hundred.
Percentage error = ( 9 / 384467 ) × 100 = 0.0024 %
Answer:
For Sandra to save up and purchase the mp3 she must save additional $22.
Step-by-step explanation:
This problem requires us to understand the concerns of deficit/balance
Step one
We were told that mp3 cost $95
And Sandra has saved $73
Hence for her to purchase the mp3 she has to save up to $95 which is the benchmark price for the item
Step two :
Hence the amount of money to balance up is
=Cost of mp3- Sandra's savings
= $95-$73
=$22
Answer:
40%
Step-by-step explanation:
Answer:
92
Step-by-step explanation:
Given
2n + t² ← substitute n = - 4 and t = - 10 into the expression
= 2(- 4) + (- 10)² = - 8 + 100 = 92
9514 1404 393
Answer:
f(x) = -4x^2 +48x -129
Step-by-step explanation:
It usually works well to compute the square first. That is, simplify according to the order of operations.
f(x) = -4(x^2 -12x +36) +15
f(x) = -4x^2 +48x -144 +15
f(x) = -4x^2 +48x -129