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
Sergeu [11.5K]
3 years ago
7

A certain bacteria population increases continuously at a rate proportional to its current number. The initial population of the

bacteria is 70. The population increases to 360 bacteria in 4 hours. Approximately how many bacteria are there in 7 hours? Round your answer to the nearest whole number.

Mathematics
2 answers:
masha68 [24]3 years ago
8 0

Answer:

C

Step-by-step explanation:

B = 70 × r^t

360 = 70 × r⁴

r⁴ = 36/7

4lnr = ln(36/7)

lnr = 0.4094021974

r = e^0.4094021974

r = 1.505917275

At t = 7,

B = 70 × (1.505917275)⁷

B = 1229.435775

Approximately 1229

luda_lava [24]3 years ago
3 0

Answer: C

Step-by-step explanation:

This describes an expotential function

At t = 0, P = 70

Therefore, C = 70

P = 70 e^kt

Solve for k by plugging in (4,360)

k = 0.4094

plug in t(7 hours)

70 e^(0.4094*7)

The answer roughly equals C

You might be interested in
Describe in your own words how the picture above shows 3(2 + x)
natta225 [31]

Answer:

6 + 3x

Step-by-step explanation:

3 * 2 and 3 *x

= 6 + 3x

you can not break that down any farther so it stays at "6 + 3x".

Hope this helps!

4 0
3 years ago
Read 2 more answers
Solve 80% of x = 100 or 0.8x = 100
suter [353]

Answer:

125

Step-by-step explanation:

divide both sides of the equation by 0.8

0.8÷0.8=0.8÷100

any expression divided by 1 is itself

x=100÷0.8

divide the numbers

100÷0.8=125

125 is your answer

7 0
3 years ago
if there are 1200 tickets sold for a raffle and you bought 300, what is the probability you will not win..
Snowcat [4.5K]

Answer:

fraction form 3/4

decimal form 0.75

percentage form 75%

Step-by-step explanation:

8 0
2 years ago
7x+4y=20 point slope form
miskamm [114]

Answer:

y = -\frac{7}{4}x + 5

Step-by-step explanation:

So here we have to put it in y = mx + b form;

7x + 4y = 20

Subtract 7x from both sides;

4y = -7x + 20

Divide both sides by 4;

y = -\frac{7}{4}x + 5

4 0
4 years ago
Write each as the sum of two terms in the form t_n,r. t_5,3 , t_11,2 , t_15,13
Anarel [89]

The sum of two terms are:

  • t₅, ₃ = 8
  • t₁₁, ₂ = 13
  • t₁₅,₁₃ = 28.

<h3>What is the sum about?</h3>

The sum of two numbers is one that tells you to find the sum of two or more numbers, and as such, you have to add the numbers altogether.

t₅, ₃ =  5 + 3

= 8

t₁₁, ₂ = 11 + 2

= 13

t₁₅,₁₃ =  15 + 13

= 28.

Hence the correct sum of two terms are:

  • t₅, ₃ = 8
  • t₁₁, ₂ = 13
  • t₁₅,₁₃ = 28.

Learn more about sum from

brainly.com/question/17695139

#SPJ1

4 0
2 years ago
Other questions:
  • LOAD OF QUESTIONS:
    5·2 answers
  • What is the slope of the line that passes through the pair of points (3/2,-2) and (-3,7/3)?
    5·1 answer
  • What is the expression
    15·2 answers
  • What is 4 1/4 * 4/34 =
    6·1 answer
  • In a juggling competition, 7/ 20 of all the jugglers use balls only, 3/ 7 of all the jugglers use rings only, and the rest of ju
    5·1 answer
  • Round the following to the nearest thousands: 3678 *​
    11·2 answers
  • Graph y &lt; 1/3 x + 1/2
    7·1 answer
  • a manufacturer has the following quality control check at the end of a production line. if at least 8 of 10 randomly picked arti
    12·1 answer
  • I don’t know how to do this HELP
    7·1 answer
  • Choose the letter of the equation for<br> the graph.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!