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Westkost [7]
3 years ago
14

WILL GIVE BRAINLIST IN SECONDS!!! [ solve for x ]

Mathematics
1 answer:
Gnesinka [82]3 years ago
5 0

Answer:

10

Step-by-step explanation:

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mark's computer weighs 35.769 pounds. what is the weight of his computer rounded to the nearest hundredth
Bezzdna [24]
So hundreth is the 2nd number after the decimal point
that is the 6
so to round you take the numer before it so
69
if number is <u>></u>5 round up

if number is <5 round down

9 is >5 so round up
7

35.77 ppounds
8 0
3 years ago
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During the period from 1790 to 1930, the US population P(t) (t in years) grew from 3.9 million to 123.2 million. Throughout this
alex41 [277]

Answer:

Step-by-step explanation:

Given that during  the period from 1790 to 1930, the US population P(t) (t in years) grew from 3.9 million to 123.2 million. Throughout this period, P(t) remained close to the solution of the initial value problem.

\frac{dP}{dt} =0.03135P =0.0001489P^2, P(0) = 3.9

a) 1930 population is the population at time t = 40 years taking base year as 40

We can solve the differential equation using separation of variables

\frac{dP}{0.03135P – 0.0001489P^2 } =dt\\\frac{dP}{-P(0.03135 – 0.0001489P } =dt

Resolve into partial fractions

\frac{31.8979}{P} -\frac{0.00474}{0.0001489P-0.03135}

Integrate to get

ln P -0.00474/0.0001489  (ln (0.0001489P-0.03135) = t+C

ln P -31.833  (ln (0.0001489P-0.03135) =t+C

\frac{P}{( ( (0.0001489P-0.03135)^{31.833}  } =Ae^t

Limiting population would be infinity.

6 0
3 years ago
HELP! (Urgent pre-calculus question.)
marishachu [46]
2. means that for every x, there is eactly one y
basically, we can use the vertical line test to see if it crosses at any 2 points

first one works
2nd one works
3rd works
4th works
5th works
they are all one to one functions



3.
easy
steps
for f(x)=?
replace f(x) with y
switch x and y
solve for y
replace y with  f⁻¹(x)
so

f(x)=(1+x)^3-2
replace
y=(1+x)^3-2
switch
x=(1+y)^3-2
solve
x+2=(1+y)^3
\sqrt[3]{x+2}=1+y
-1+\sqrt[3]{x+2}=
replace
f^{-1}(x)=-1+\sqrt[3]{x+2}
first option



4.
domain, hmm we can't divide by 0 so domain is all real numbers except for x=0
domain is (-\infty,0) \cup(0,\infty)
hmm, range
as x approaches negative or positive infinity, f(x)=5
as x approaches 0 from the left, f(x) appraoches negative infintiy
as x approaches 0 from the right , f(x) appraoches positive infintiy
so range is (-\infty,5) \cup(5,\infty)

domain is (-\infty,0) \cup(0,\infty)
range is (-\infty,5) \cup(5,\infty)
answer is the 4th option
8 0
3 years ago
Oliva needs 5 buckets of water to wash her car.In one bucket,it holds 4 liters.How many liters of water will she use to wash her
tester [92]

Step-by-step explanation:if she needs 4 liters for one bucket she will take also 5 times of 4 liters=20 liters

7 0
3 years ago
Select the correct difference. -3z7 - (-5z7)<br> 8 z14<br> 2 z7<br> 2 z<br> -2 z7
djyliett [7]

Answer:

2 z7

Step-by-step explanation:

-3z7 - (-5z7)

<u><em>Solve : </em></u>

2 z7

7 0
3 years ago
Read 2 more answers
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