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ANTONII [103]
3 years ago
13

Dr. Brian is working on an enhancer for regeneration of living cells. He tests his enhancer on a sample of 10 cells in a Petri d

ish and
observes the effects. The cell population increase continuously over time, and can be modeled using the function given below where
t represents time in hours.
n(t) = 10e 0.6756
How much time will it take for the cell population in the Petri dish to reach 1,125?
Mathematics
1 answer:
anygoal [31]3 years ago
7 0

Answer:

t= (In*112.5)/0.675  t~6.997

Step-by-step explanation:

when you solve the equation (I used a calculator) You should put 1,125=10e^0.675t and it gives you 6.997 and from there I used photo math to scan the other answer choices until I found the one that was equal to 6.997 (the answer is rounded of course)

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Roxanne has $80 in a savings account. The interest rate is 10%, compounded annually. To the nearest cent, how much will she have
finlep [7]
104 because 10% of 80 is 8 years meaning 8+8+8=24 add 24 to 80 and ur answer is 104
3 0
3 years ago
What is the greatest common factor of 72x^2y and 18xy?
ELEN [110]
The GCF is the number or variables you can get out of a a term or multiple terms, when you get it out you have to be able to multiply it again and get the same terms as before for example the GCF of here is 18xy because both numbers can be divided in 18 and they both share 1 x and 1 y in common... Now divide to get your answer put the GCF outside the parenthesis and the numbers divided inside

18xy(4x + 1) if you do distributive property and multiply it you will get 72x2y+18xy see they match so the GCF of "18xy" is correct....

Hope this helped
5 0
4 years ago
Read 2 more answers
14. The figure shows a slice of an apple pie in the shape of a sector of a circle with centre O and radius 8cm. A cut is made al
Strike441 [17]

Step-by-step explanation:

(i) Using the law of cosines, we can find that

cos(O) = \frac{8^{2}+8^{2} - 7^{2}}{8*8*2} ≈ 0.62, so O ≈ 0.9

(ii) Since the whole pie has 2π radians (or 360 degrees), we can divide 0.9 by 2π to get around 6.9 slices from the pie

(iii) The area of the shaded segment can be found by finding sector OAB and subtracting triangle OAB from that. Sector OAB can be found by finding the area of the pie (π*8², since 8 is the radius) and dividing that by 6.9, so we get 64π/6.9 ≈ 29. Then, the area of the triangle is √p(p-a)(p-b)(p-c), with p being the perimeter and a, b, and c being the sides. Plugging 7, 8, and 8 in, we get 25.1781 as our area, so the difference is around 3.8

4 0
3 years ago
Which is the function of x?
mash [69]

Answer:

Step-by-step explanation:A function defines one variable in terms of another. The statement "y is a function of x" (denoted y = y(x)) means that y varies according to whatever value x takes on. A causal relationship is often implied (i.e. "x causes y"), but does not *necessarily* exist.

4 0
4 years ago
A lasagna recipe uses 1 2/4 teaspoon basil 1/4 teaspoon pepper and 4 teaspoons parsley if you double the recipe how many teaspoo
Nimfa-mama [501]

Answer:

11 1/2 teaspoons

Step-by-step explanation:

1 2/4 basil= 1.5 tsp If you multiply this by two to double the recipe you will have 3 teaspoons of basil.

1/4*2= 2/4 pepper

4*2=8 parsley

After you double everything you need to add them together:

3+2/4+8

Which brings you to the final answer of 11 2/4 teaspoons or if you simplify it.... 11 1/2 teaspoons

6 0
3 years ago
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