- The result of Ben's estimation strategy is 7 grams.
- The exact amount of nickel is 8.05 grams.
<u>Step-by-step explanation:</u>
First off all, if we have 1 gram of a substance that has 0.51 gram of copper and 0.26 gram of zinc, the remainder will be:
1 gram - ( 0.51 + 0.26 ) = 1 gram - 0.77 = 0.23 grams.
Hence we have 0.23 gram of nickel.
But the estimation of Ben implies that 1 grams of the substance has 0.2 gram of nickel.
Multiplying the grams of the substance by the gram of nickel to obtain the grams of nickel in 35 grams of the substances.
35
0.2 = 7 grams.
Hence 35 grams of the substance has 7 grams of nickel.
But we know that in 1 gram of the substance are not 0.2 grams of nickel but 0.23 as calculated. So by multiplying the grams of the substance by 0.23 and thereby finding the actual grams of nickel in it:
35
0.23 = 8.05 grams.
Hence 35 grams of the substance has 8.05 grams of nickel.
Answer:
47.5 miles
Step-by-step explanation:
So, every morning, you travel 4.75 miles to get to school... and another 4.75 miles in the afternoon to return.
So, each day, you travel a total of 9.5 miles (4.75 + 4.75) to go school and back.
On a typical school week, you'll go to school 5 times... so you'll need to travel a total of 47.5 miles (5 * 9.5).
Answer:
60 I guess,,,,,,,,,,,.,,,.
Answer:
what's the question.
Step-by-step explanation:
lol
Answer:
area of rectangle is 150
area of semicircle is πr^2/2
39.26
then add both u get 189.26 which is close to 189.25