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
DENIUS [597]
3 years ago
5

16.) A. B. C. Algebra 2 chapter 7

Mathematics
1 answer:
Slav-nsk [51]3 years ago
5 0
Your equation for exponential growth is of the form y=a(b) ^{x}, where a is the initial or starting value and b is the multiplier.  DO NOT EVER EVER MULTIPLY A TIMES B AND THEN RAISE IT TO THE X POWER! This is not the way you do these.  A and B remain separate.  In our situation, we have an equation that looks like this y=8(4) ^{x}.  That's part a.  Now we need to find how many bacteria are on it 5 hours later, which will be subbed in for our x in the equation.  y=8(4) ^{5}.  Raise 4 to the 5th power first to get 1024, then multiply that by 8 to get a total of 8192 bacteria on your cookie 5 hours later.  That's part b.  Now for part c, you're going to have to use some of the properties of logs to solve this.  This time they're asking for the time it takes to get 100,000 bacteria on the cookie, which is your x value.  You need to get it out from being an exponent to being a "regular" variable we can solve for.  So our equation now uses the number of bacteria as our y: 100,000=8(4) ^{x}.  Begin by dividing both sides by 8 to get rid of it on the right: 12,500=4 ^{x}.  Now take the log of both sides to bring down that x: log(12,500)=log(4) ^{x}, and using the power property we have log(12,500) = x log(4).  Now we will divide both sides by log(4) to isolate the x and do the work on our calculator to find that x= 6.80.  In other words, it will take just short of 7 hours for your cookie to have 100,000 bacteria on it.  I'd suggest cafeteria food, but that might kill you quicker!
You might be interested in
What is an equation of the line that passes through the point (-5,-3)(−5,−3) and is parallel to the line 3x+5y=15
Sunny_sXe [5.5K]

Answer:

  • y = -3/5x - 6 or 3x + 5y = -30

Step-by-step explanation:

<u>Given line:</u>

  • 3x + 5y = 15

<u>Converting into slope-intercept form:</u>

  • 3x + 5y = 15
  • 5y = - 3x + 15
  • y = -3/5x + 3

<u>Parallel lines have the same slope, so the parallel line will be:</u>

  • y = -3/5x + b

<u>Using given point (-5, -3) finding the y-intercept:</u>

  • -3 = -3/5(-5) + b
  • -3 = 3 + b
  • b = -3 - 3
  • b = -6

<u>So the line is:</u>

  • y = -3/5x - 6

<u>Or converted into standard form:</u>

  • y = - 3/5x - 6
  • 3/5x + y = -6
  • 3x + 5y = -30
8 0
3 years ago
Please help me to do this<br><br><br><br><br>sinx+cosx-sin(x-30)+cos(x-30)=√6cos(x-15)​
miv72 [106K]
The correct answer is 4x to the third power.
3 0
3 years ago
8/2(2+2) what is this answer people have either said 1 or 16 . What’s your answer and why?
pantera1 [17]

Answer: 1

Step-by-step explanation: It is 1 because according to order of operations we have to do what is inside the parentheses first, so we do 2x2 + 2x2, which equals 4+4=8, finally do 8/8 to get 1.

Hope this helps! :)

5 0
3 years ago
Daniel works at an electronics store, and he claims that the popularity of a television (measured in number of sales) is inverse
Rom4ik [11]

We are given that popularity of television is inversely proportional to its cost.

let us say popularity of television is represented by "P" and cost of television by "T".

We will use a constant "k" to convert the proportionality sign to equal to (=) sign.

Thus forming the equation :

P= \frac{k}{T}

We are given that 15 customers buy a television that cost $1500.

plugging P=15 and T=1500, finding k,

15= \frac{k}{1500}

k=15*1500 = 22500

Next we have to find how many customers would buy a television that costs $2500, so here k=22500 and T=2500, plugging this in the equation we have ,

P= \frac{22500}{2500}

P=9

So there will be 9 customers that buy a television which costs $2500.

7 0
3 years ago
Read 2 more answers
The answer has to be simplified
OLga [1]

Answer:

m = 2

Step-by-step explanation:

m        m+3

----- = ----------

4           10

Using cross products

10m = 4(m+3)

Distribute

10m = 4m+12

Subtract 4m from each side

10m-4m = 4m-4m+12

6m = 12

Divide by 6

6m/6 = 12/6

m = 2

3 0
3 years ago
Read 2 more answers
Other questions:
  • What number is 32% of 1,000
    15·1 answer
  • a rectangular prism has a height of 12 centimetres and a square base with sides measuring 5 centimetres, a pyramid with the same
    9·1 answer
  • What does x equal if the circumference of a circle equals 113.04
    7·1 answer
  • I NEED HELP PLEASE !!!!!
    10·1 answer
  • The image below, what is true about angles 1, 2, and 3?
    8·2 answers
  • Omgggg help me for brainly what’s 4 x 5 divided by 2
    9·2 answers
  • 10
    6·1 answer
  • Please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! i give brainliest
    12·1 answer
  • Jim went on a fishing holiday.The histogram shows some ingormation about the weights of the fish he caught.
    10·1 answer
  • Someone help me please
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!