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VARVARA [1.3K]
2 years ago
8

How can I compare these scores?

Mathematics
2 answers:
ra1l [238]2 years ago
8 0
You can convert each as a percentage or convert them all out of 5.
NISA [10]2 years ago
6 0
4/20 simplified is 1/5.

1/5 in percent is 20%

So you have 20%, 25%, and 20%

In decimal, you have:

.20, .25, .20
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What would the first step be in solving the inequality: -y (less than or greater than sign) 136
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"-y (less than or greater than sign) 136" translates into two separate inequalities:


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7 0
2 years ago
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hram777 [196]
$13 is your answer. Multiply 3x5 then subtract the total from 28
5 0
2 years ago
Read 2 more answers
The population for Gulch Dry has been declining according to the function P(t)= 8000. 2^-t/29 where t is the number of years sin
Iteru [2.4K]
A)

\bf 1990-1910=80\leftarrow t&#10;\\\\\\&#10;P(t)=8000(2)^{-\frac{t}{29}}\implies P(80)=8000(2)^{-\frac{80}{29}}&#10;\\\\\\&#10;P(80)=8000\cdot \cfrac{1}{2^{\frac{80}{29}}}\implies P(80)=\cfrac{8000}{\sqrt[29]{2^{80}}}

and surely you know how much  that is.

b)

\bf P(t)=125\\\\\\  125=8000(2)^{-\frac{t}{29}}\implies \cfrac{125}{8000}=2^{-\frac{t}{29}}\implies \cfrac{1}{64}=2^{-\frac{t}{29}}&#10;\\\\\\&#10;\textit{now we take log to both sides}&#10;\\\\\\&#10;log\left( \frac{1}{64} \right)=log\left( 2^{-\frac{t}{29}} \right)\implies log\left( \frac{1}{64} \right)=-\frac{t}{29}log\left( 2 \right)&#10;\\\\\\&#10;log\left( \cfrac{1}{64} \right)=-\cfrac{tlog(2)}{29}\implies \cfrac{-29log\left( \frac{1}{64} \right)}{log(2)}=t\implies 174=t

since in 1910 t = 0, 174 years later from 1910, is 2084, so in 2084 they'll be 125 exactly, so the next year, 2085, will then be the first year they'd fall under that.
6 0
3 years ago
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