The answer to the first image is 237.6
For the second image the answer is 170 and the lateral surface area is 70
Answer:
B (4)
Step-by-step explanation:
= = = 4
Half-life (t½) is the amount of time required for a quantity to fall to half its value as measured at the beginning of the time period.
(t½) of C-14 is 5730 years, which means that after 5730 years half of the sample would have decayed and half would be left as it is.
After 5730 years ( first half life) 70 /2 = 35 mg decays and 35 g remains left.
After another 5730 years ( two half lives or 11460 years) 35 /2 = 17.5mg decays and 17.5 g remains left .
After another 5730 years ( three half lives or 17190 years) 17.5 /2 = 8.75mg decays and 8.75g remains left.
after three half lives or 17190 years, 8.75 g of C-14 will be left.
Answer:
For every 64 miles, she uses 2 gallons of gas. So the answer can be 64:2 or 31:1
Step-by-step explanation:
Answer:
67) 2.8
68) 50
69) 3750
70)12,600,000
Step-by-step explanation:
67)
40% of 700
40%= 40/100
68)
25% of 200
25%= 25/100
69)
150% of $2,500
150%=150/100
70)
3½% of $36,000
First we need to convert 3½ to improper fraction
3½=7/2
7/2%= 3.5*0.01= 350
Hope this helps ;) ❤❤❤