Answer:
25 students
Step-by-step explanation:
.8x = 20
x = 25 students
Answer:
89.5 cm
Step-by-step explanation:
circumference of full circle = π2r = 3.14 x 2 x 19 = 119.32 cm
(270/360)(119.32) = 89.5 cm
Answer:
A = 0.75 gram or 1 gram
Step-by-step explanation:
The half-life of carbon 14 is years. How much would be left of an original -gram sample after 2,292 years? (To the nearest whole number).
We can use the following formula for half-life of to find out how much is left from the original sample after 2,292 years:
where:
<em>A</em> is the amount left of an original gram sample after <em>t</em> years, and
is the amount present at time <em>t</em> = 0.
The half-life of is the time <em>t</em> at which the amount present is one-half the amount at time <em>t </em>= 0.
If 1 gram of is present in a sample,
Solve for A when t = 2,292:
Substituting = 1 gram into the decay equation, and we have:
A = 0.75 g or 1 g
Answer:
138.80
Step-by-step explanation:
I took 149.99 times 15% then times that by the tax rate to get your final answer.
Answer:
The picture, brainly is being difficult, I couldn't type it in.
Step-by-step explanation:
Just add all the x^2 and normal numbers then sqrt them