Please help, gotta get em grades up

Mathematics

2 answers:

just olya [345]3 years ago

5 0

B. x=5/4

Step-by-step explanation:

ivanzaharov [21]3 years ago

4 0

The answer is B.

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Calculate 5% of 800. Please show working out with steps

Sauron [17]

Answer:

5% of 800 is 40.

Step-by-step explanation:

5 percent * 800 =

(5:100)* 800 =

(5* 800):100 =

4000:100 = 40

plz mark as brainliest

4 0

3 years ago

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Population Growth Using 20th-century U.S. census data,

asambeis [7]

The population of Ohio will be 10 million in the year 1970

The population growth of Ohio is represented by the function:

$P(t)=\frac{12.79}{1+2.402e^{-}0.0309t}$

P is the population in millions

t is the number of years since 1900

To find the year that the population of Ohio will be 10 million, substitute P = 10 into the function P(t) and solve for t

$10=\frac{12.79}{1+2.402e^{-}0.0309t}\\\\10(1+2.402e^{-}0.0309t)=12.79\\\\1+2.402e^{-}0.0309t=\frac{12.79}{10} \\\\1+2.402e^{-}0.0309t=1.279\\\\2.402e^{-}0.0309t=1.279-1\\\\2.402e^{-}0.0309t = 0.279\\\\e^{-}0.0309t =\frac{0.279}{2.402} \\\\e^{-}0.0309t =0.116\\\\-0.0309t=ln0.116\\\\-0.0309t=-2.154\\\\t=\frac{-2.154}{-0.0309} \\\\t=69.7$