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Likurg_2 [28]
3 years ago
10

8 + (-10) just confused lol

Mathematics
1 answer:
grin007 [14]3 years ago
5 0
8+(-10) is like 10-8 except backwards so how i do some problems is like that and then add a negative sign; so say if i were doing 8+(-10), i would do 10-8 which equals 2 and then since 10 is bigger than 8 and it’s a negative number, i would put -2 as my answer
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Answer:

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Rosemary wants to buy a gift for her little brother this month, after she pays her bills. Should she buy a baseball glove for $2
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I need help please on this question
Sliva [168]
13. No
14. No
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A scientist running an experiment starts with 100 bacteria cells. These bacteria double their population every 15 hours. Find ho
kati45 [8]

Answer:

it takes 24 hours for the bacteria cells to increase to 300

Step-by-step explanation:

WE use the formula

C= A(b)^{\frac{t}{d}}

Where A is the initial amount of bacteria= 100

bacteria doubles every 15 hours so b=2

d= 15 because d is the time taken to double the number

t is the number of hours

c is the number of bacteria after t hours = 300

Plug in all the values and solve for 't'

300= 100(2)^{\frac{t}{15}}

Divide both sides by 100

3=(2)^{\frac{t}{15}}

Now we take log on both sides

log(3)=log(2)^{\frac{t}{15}}

As per log property we can move the exponent before log

log a^m = m log(a)

log(3)=\frac{t}{15}log(2)

Divide both sides by log(2)

\frac{log(3)}{log(2)} = \frac{t}{15}

Multiply both sides by 15

\frac{log(3)}{log(2)}*15=t

t = 23.77

So its approximately 24 hours


4 0
3 years ago
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7 0
3 years ago
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