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(2x+5)(6x-1)=120
2x(6x-1)+5(6x-1)=120
12x^2-2x+30x-5=120
12x^2+28x-5-120=0
12x^2+28x-125=0
Find the roots of the equation by quadratic formula
X=3
Explanation:
A straight line equals 180°, and they give you the one angle of 56°, so you know 56+ the other equation has to equal 180
56+4x+112=180
168+4x=180
Subtract 168 from both sides
4x=12
Divide 4 from both sides
X=3
You can check by filling it in.
56+4*3+112=
12+56+112=180
Answer:
197.2 million
Step-by-step explanation:
The appropriate exponential equation for the population is ...
p(t) = 172.0e^(0.019t)
Then we can compute for t=7.2:
p(7.2) = 172.0e^(0.019·7.2) ≈ 172.0·1.146599 ≈ 197.2
7.2 minutes from now, the population will be about 197.2 million.
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For continuous growth (or continuous compounding), the exponential formula is ...
f(t) = (value at t=0)×e^(rt)
where r is the growth rate in one unit of time, and t is the number of time periods.
Answer:
no
Step-by-step explanation:
2,225 (?) i’m assuming bc the b.c dates decrease instead of increase like they do now so i just added 1643 + 582
