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hodyreva [135]
3 years ago
7

A bacterium cell splits into 2 cells every hour. Write and evaluate an exponential expression to find how many cells there will

be in 6 hours. Then use your answer to help you find the number of hours it will take for there to be 1,024 cells.​
Mathematics
1 answer:
timurjin [86]3 years ago
7 0

Answer:

2^x

64 bacterium

10 hours

Step-by-step explanation:

doubles every hour

if x = hours

2^x

2^x --> 2⁶ = 64

2^x = 1024

1024 = 2^10 ---> x=10

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How many minutes are in m hours?
notka56 [123]

Answer:

the 2nd one (60m minutes)

Step-by-step explanation:

60 minutes in an hour, so if m is the number of hours you would times that by the number of minutes in an hour which is sixty. 60m is 60 times m

8 0
3 years ago
(2x-1+7x²)+(3+7x -3x²)
ANTONII [103]

Answer:

4x^{2} +9x+2

Step-by-step explanation:

You combine the x^{2} terms, the x terms and the constants (the terms without variable/letters)

5 0
2 years ago
The product of (4z^2 + 7z - 8) and (-z + 3) is -4z^3 + xz^2 + yz - 24. What is the value of x? What is the value of y?
ycow [4]

Answer:

x=5+\frac{29}{z}-\frac{y}{z}

y=5z+29-xz

Step-by-step explanation:

Given: (4z^2+7z-8)(-z+3)=-4z^3+xz^2+yz-24; find x and y.

Let's start with finding x first. Let's distribute the left side of the equation.

-4z^3+5z^2+29z-24=-4z^3+xz^2+yz-24

Let's move everything we can to the left side of the equation. Some things will cancel out.

5z^2+29z=xz^2+yz

Now, let's move the term that includes x to the left side of the equation. Everything else should be moved to the right.

-xz^2=-5z^2-29z+yz

Let's get rid of the negative sign in front of x by dividing both sides by -1.

xz^2=5z^2+29z-yz

To get x completely isolated, divide both sides by z^2.

\frac{xz^2}{z^2}=\frac{5z^2}{z^2}+\frac{29z}{z^2}-\frac{yz}{z^2}

Simplify.

x=5+\frac{29}{z}-\frac{y}{z}

Let's solve for y. We will start with the distributed and simplified equation to make it easier.

5z^2+29z=xz^2+yz

Now, let's move the term that includes y to the left side of the equation. Everything else should be moved to the right.

-yz=-5z^2-29z+xz^2

Again, let's get rid of the negative sign in front of the y by dividing both sides by -1.

yz=5z^2+29z-xz^2

To isolate y, divide both sides by z.

\frac{yz}{z}=\frac{5z^2}{z}+\frac{29z}{z}-\frac{xz^2}{z}

Simplify.

y=5z+29-xz

8 0
3 years ago
Read 2 more answers
Solving two linear equations.<br> 4=3a-14?
kykrilka [37]
Not too sure but got a=6

3 0
3 years ago
Read 2 more answers
The price of a computer was $1,200 after applying a 20% discount. What was the original price of the computer?
Mars2501 [29]

Answer:

1500 = original price

Step-by-step explanation:

New price of computer = original price - original price * percent off

Factoring out the original price

New price of computer = original price (1- percent off)

We know the new price = 1200 and the percent off =20

Substituting these value in

1200 = original price (1-.2)

1200 = original price (.8)

Divide each side by .8

1200/.8 = original price*.8/.8

1500 = original price

8 0
3 years ago
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