1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
oksano4ka [1.4K]
3 years ago
13

Under ideal conditions a certain bacteria population is known to double every four hours. Suppose that there are initially 50 ba

cteria.
(b) What is the size of the population after t hours?

(c) What is the size of the population after 17 hours? (Round your answer to the nearest whole number.)
Mathematics
1 answer:
san4es73 [151]3 years ago
3 0

Answer:

(b)    a = 50 * 2^(t/4)

(c)    951

Step-by-step explanation:

After t hours

a = 50 * 2^(t/4)

After 17 hours

a = 50 * 2^(17/4)

a = 50 * 2^(4.25)

Use calculator

a = 951.3656920022

Rounded

a = 951

You might be interested in
9.84615384615 in a fraction
choli [55]

Answer:

Step-by-step explanation:

128/13

3 0
3 years ago
-9/14+2/7 w explanation!!
mars1129 [50]

Answer:

-5/14

Step-by-step explanation:

When adding fractions, you need to have a common denominator, the bottom part of a fraction. Because one denominator is 14 and the other is 7, you must create a new denominator.

To create a new denominator, you can either reduce a fraction or multiply it by something, which is easier.

For this problem, we can convert 2/7's denominator into 14 instead of 7 by multiplying the fraction by 2/2:

<u>2</u>  x <u>2</u>  =  <u>4</u>

7     2   = 14

2/7 has now converted into 4/14. Now, we can easily add.

-9/14+4/14  This can be rewritten as something more understandable.

4/14-9/14    We are now subtracting.

-5/14            This cannot reduce, so it is our answer.

I hope this helps!! Have an amazing day and let me know if you want more explanation ;)

3 0
3 years ago
What is the simplified form of x+9/2x+3+x+4/x+2?
Mice21 [21]
The answer is C because multiply and divide by (x+2)(2x+3) 
= ( (x+9)(x+2) + (x+4)(2x+3) ) ( (x+2)(2x+3)) 
= ( (x^2+11x+18) + (2x^2+11x+12) ) / ( 2x^2+7x+6) 
= (3x^2+22x+30) / (2x^2+7x+6) 
7 0
3 years ago
Read 2 more answers
Please help me with this question
BartSMP [9]

Answer:

3x-28=2x+25\\x=53

Step-by-step explanation:

Parallel lines cut by a transversal are two lines which do not cross intersected by a third line. Because lines such as m and n are parallel, we have angles which are equal to each other.

  • Corresponding Angles - angles located in the same position in each intersection. Can be shown by translating or sliding the angle down/up.
  • Alternate Interior Angles - angles located inside the parallel lines across the transversal. Can be shown by reflecting and translating or rotation.
  • Alternate Exterior Angles - angles located outside the parallel lines across the transversal. Can be shown by reflecting and translating or rotation.
  • Vertical angles - angles across a vertex from one another. Can be shown by reflection.

The angles shown here are located outside the parallel lines and across the transversal from each other. Therefore we have Alternate Exteroir angles and can set them equal to each other to solve for x.

3x-28=2x+25\\3x-2x-28=2x-2x+25\\x-28=25\\x-28+28=25+28\\x=53

We check our work and should get equal angles:

3(53)-28=2(53)+25\\159-28=106+25\\131=131

4 0
3 years ago
Ellen read a book a day for 10 weeks. How many books did<br> she read in all?
a_sh-v [17]

1 week = 7 days

10 weeks = 10×7 days

= 70 days

if Ellen reads 1 book in a day

Therefore,

1 day = 1 book

70 days = 70×1

= 70 books.

Thus Ellen reads 70 books in 10 weeks.

Hope helps

8 0
2 years ago
Read 2 more answers
Other questions:
  • Place the indicated product in the proper location on the grid. [4 - (3c - 1)] [6 - 3c -1)]
    9·1 answer
  • Find the derivative of the function
    12·1 answer
  • Suppose you are given the function f(x) = 7x and asked for f(-6). This is the same as asking for the value of the function at x
    15·1 answer
  • Question 7(Multiple Choice Worth 1 points)
    14·1 answer
  • 3. Mrs Ofori-Atta's class will be planting a food garden. Here is the plan they have agreed on. a) What is the total area of the
    11·1 answer
  • What is the slope of the line that passes through the points (-2, 3) (−2,3) and (-14, -5) ?(−14,−5)? Write your answer in simple
    6·1 answer
  • Michelle plans on raising $80 for her softball team. To raise the money, she is selling team shirts for $10 each.
    9·1 answer
  • PLS PLS HELP ASAP IT IS FOR A TEST
    13·2 answers
  • Copy the problem, mark the givens in the diagram and write a statement/reason proof
    14·1 answer
  • Marisa was finding the area of a rectangle with the length 3 2/3
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!