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
Dafna1 [17]
3 years ago
15

Marco starts with a population of 10 bacteria that doubles every day for a number of days, d. He writes the expression 10(2d) to

find the number of bacteria after d days. Isabella starts with a population of 1 bacterium that increases 20% every day for a number of days, d. She writes the expression (1 + 0.2)d to find the number of bacteria after d days. Use the drop-down menus to explain what each part of Marco's and Isabella's expressions mean.

Mathematics
2 answers:
LenKa [72]3 years ago
6 0

Answer:

Step-by-step explanation:

riadik2000 [5.3K]3 years ago
3 0

Answer:

Marco- 10 is the starting value of the population. 2 is the growth rate of "double each day" with d as an exponent.

Isabella- 1 is the starting population. 1+0.2=1.2 is the rate at which it grows each day.

Step-by-step explanation:

Marco's equation should be 10(2^{d}) since the bacteria double each day. 10 is the starting value of the population. 2 is the growth rate of "double each day" with d as an exponent. This will double each day because:

Day 1 is 2^{1}=2

Day 2 is 2^{2}=4

Day 3 is 2^{3}=8

Day 4 is 2^{4}=16

You'll notice the value doubles each day.

Isabella has a different equation because her population increases by a percentage. We use the simple interest formula to calculate the bacteria's daily increase or interest.

1(1+0.2)d

1 is the starting population.

1+0.2=1.2 is the rate at which it grows each day.

You might be interested in
margo can purchase tile at a store for $0.79 per tile and rent a tile saw for $24.At another store she can barrow the tile saw f
Flura [38]
T=number of  tiles bought
cost at store 1 is 0.79t+24
cost at store 2 is 1.19t

when will be equal cost?

0.79t+24=1.19t
minus 0.79t from both sides
24=0.4t
divide both sides by 0.4
60=t

answer is 60 tiles
8 0
3 years ago
Read 2 more answers
Bill has a box of markers that has a base of 8 cm by 20 cm and a height of 6 cm. Martin's pencil box has a height of 4 cm and a
Maslowich
Ok so you need to multiply the length, width, and height together for each one.
Bill: 8 x 20 x 6 = 960
Martin: 4 x 15 x 16 = 960
So Bill is right, they both have the same volume.
8 0
3 years ago
Read 2 more answers
n a certain county, the number of Charter Schools is eleven less than twice the number of Alternative Schools. There are 35 Char
dedylja [7]
11+35/2 i think im not sure what your options are
4 0
3 years ago
Read 2 more answers
Simplifying expressions without negative exponents with variales
Olin [163]
Multiply (or distribute) the exponent outside the parenthesis with every exponent inside the parenthesis, remember that if there is no exponent shown, then the exponent is 1. Step 3: Apply the Negative Exponent Rule. Negative exponents in the numerator get moved to the denominator and become positive exponents.
7 0
3 years ago
An architect plans to make a drawing of the room of a house. The segment LM represents the ceiling of the room. He wants to cons
aev [14]
Here are the steps

1: Put the compass on Q and make the width equal to the distance from Q to L. Extend line LM towards the left side of L and draw an arc hitting the line segment on the left side of L

2. <span> Without changing the width and position of the compass, draw an arc between L and M.

3. Without changing the width of the compass, put the compass on the point of intersection of the arc and line LM (left side of L). Draw an arc above line LM.

4. Without changing the width of the compass, put the compass on the point of intersection of the arc and line LM (right side of L). Draw an arc above line LM.

5. Use a straight edge to make a line from the intersection of the two arcs above line LM to Q intersecting through L along the way. </span>
8 0
3 years ago
Read 2 more answers
Other questions:
  • Marcus hikes at a rate of 2 miles per hour if he hikes for 6 1/3 hours how many will he hike
    13·2 answers
  • What is 75 divided by 7 subtracted by 8 and multipled my 8?
    5·1 answer
  • 3/4 gallon of paint covers 1/3 of the wall then how much paint is needed for the entire wall
    6·1 answer
  • There are 7 oz of sugar in a 16oz box of cereal. What percentage is sugar
    6·1 answer
  • A manufacturing company plans to progressively increase its production capacity over the next few quarters. (A quarter is a peri
    7·2 answers
  • Jayne has 3 quarters, 2 dimes, 1 nickel and 2 pennies in her pocket.how many different amounts of money can she make using some
    15·1 answer
  • Wat is .54 as a fraction?
    10·2 answers
  • A bingo card has 25 spaces but 1 free space, and if the card deck is 100 cards how do i know how many game cards i need for play
    6·1 answer
  • X
    5·1 answer
  • The quadrilateral with the following vertices is a ______. (-6, -2), (4, -2), (2, -5), (-7, -5)
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!