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expeople1 [14]
4 years ago
6

Can someone help me and show me how you did it thanks!

Mathematics
1 answer:
34kurt4 years ago
5 0
Multiply r and s and the answer
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A population of amoebas in a petri dish will triple in size every 20 minutes. at the start of experiment the population is 800.
sp2606 [1]
If we are to derive the equation that models the growth of the amoeba, we make use of the general form:
p = po k^t
where po is the initial population
k is the multiplicative rate of change

From the problem
3po = po k^(20)
k = 1.06

The equation is
p = 800 (1.06)^t
4 0
4 years ago
T is directly proportional to M.
zaharov [31]
By proportionality, for any number a, if T is multiplied by a then the same goes for M.

a) M has been multiplied by \dfrac{3}4 hence T=20\cdot\dfrac{3}4=5\cdot3=15

\boxed{T=15}

b) T has been divided by 2 hence M=\dfrac{4}2

\boxed{M=2}
6 0
4 years ago
Read 2 more answers
Find f(g(x)) and g(f(x)) of f(x)=x^2-8, g(x)=2x-5
Zina [86]

f(x)=x^2-8\\\\g(x)=2x-5\\\\f(g(x))\to\text{instead of x write the equation of the function g(x)}\\\\f(g(x))=(2x-5)^2-8=(2x)^2-2(2x)(5)+5^2-8\\\\=4x^2-20x+25-8=4x^2-20x+17\\\\\text{used}\ (a-b)^2=a^2-2ab+b^2

g(f(x))\to\text{instead of x write the equation of the function f(x)}\\\\g(f(x))=2(x^2-8)-5=(2)(x^2)+(2)(-8)-5=2x^2-16-5=2x^2-21

5 0
3 years ago
What is the value of x in the equation 4 . 10 X+52 3 +35x+1 5 ?<br><br>:)​
pashok25 [27]

Answer:

x=-3

Step-by-step explanation:

Given:

4\frac{3}{10}-(2\frac{2}{5}x+5\frac{1}{2})=\frac{1}{2}(-3\frac{3}{5}x+1\frac{1}{5})

Distribute to remove parentheses:

4\frac{3}{10}-2\frac{2}{5}x-5\frac{1}{2}=-\frac{18}{10}x+\frac{6}{10}

For simplification and clarity, reduce all mixed numbers to simplified common fractions:

\frac{43}{10}-\frac{12}{5}x-\frac{11}{2}=-\frac{9}{5}x+\frac{3}{5}

Combine like terms:

-\frac{12}{5}x-\frac{6}{5}=-\frac{9}{5}x+\frac{3}{5}

Add 6/5 to both sides, then add 9/5x to both sides:

-\frac{3}{5}x=\frac{9}{5}

Divide both sides by -3/5 to isolate x (recall dividing by a number is equal to multiplying by its reciprocal):

x=\frac{9}{5}\cdot -\frac{5}{3}, \\x=\frac{-9}{3},\\x=\boxed{-3}

3 0
3 years ago
Can someone help me pleaseee?
Soloha48 [4]
(2,4) cause where the lines meet
4 0
3 years ago
Read 2 more answers
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