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Wittaler [7]
2 years ago
9

637272727-26227727 ?????????​

Mathematics
1 answer:
andriy [413]2 years ago
4 0

Answer: 611045000

Step-by-step explanation:

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A scientist writes the equation n(h)100e^0.25h to model the growth of a certain bacteria in a petri dish, where N represents the
Natasha2012 [34]

Answer: Second option is correct.

Step-by-step explanation:

Since we have given that

n(h)=100e^{0.25h}

where, N represents the number of bacteria after 'h' hours.

So, we have given that there are 450 bacteria present.

N = 450

According to question,

450=100e^{0.25h}\\\\\frac{450}{100}=e^{0.25h}\\\\4.5=e^{0.25h}\\\\\text{Taking natural log 'ln' on both sides}\\\\\ln (4.5)=0.25h\\\\1.50=0.25h\\\\h=\frac{1.50}{0.25}\\\\h\approx 6\ hours

Hence, Second option is correct.

8 0
3 years ago
Read 2 more answers
Justine charges $25 to wash a dog. She washed 5 dogs on Saturday and then some more on Sunday. She made $325 for the weekend. Ho
Marrrta [24]

Answer

• A. Equation: 25(5 + x) = 325

,

• B. Answer: 8 dogs

Explanation

Given

• Charge to wash a dog: $25.

• She washed 5 dogs on Saturday and then some more on Sunday.

• She made $325 for the weekend.

Procedure

She charges $25 per wash, she made $325 for the weekend, and we know that on Saturday she washed 5 dogs, but we don't know how many she washed on Sunday. Thus, we have to build an equation in which the number of dogs washed on Sunday is represented by x (as we do not know the real number).

Considering that the total money made has to be equal to the multiplication of the charge times the dogs washed, the equation is:

25(5+x)=325

Then, we have to solve for x to know how many dogs did she wash on Sunday.

0. Multiplying the parenthesis

125+25x=325

<em>2. Subtracting 125 from both sides of the equation</em>

125-125+25x=325-12525x=200

<em>3. Dividing both sides of the equation against 25</em>

\frac{25x}{25}=\frac{200}{25}x=8

8 0
1 year ago
A motel bills its customers by charging a flat fee for the first night and then adding on a fixed amount for every night thereaf
melamori03 [73]
65 is the flat fee for the first night followed by a charge of 45 a night.
8 0
3 years ago
What is -0.75 as a fraction
erastovalidia [21]

Answer:

-0.75 as a fraction is -3/4

Explanation:

-3 divided by 4 is -0.75

4 0
3 years ago
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What point is a solution to the inequality shown in this graph? (-3,-6) &amp; (3,2)
NARA [144]

Answer:

(0,5)

Step-by-step explanation:

7 0
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