What is the value of x when x + 7 = 21? <br> A) -28 <br> B) -14 <br> C) 3 <br> D) 14

The tables show functions representing the growth of two types of bacteria on certain days within an experiment that lasted a to

Verizon [17]

Answer:

A. False

B. True

C. False

D. False

Step-by-step explanation:

A. Since x-intercepts indicate the amount of each bacteria at the start of the experiment, there was more of bacteria B than bacteria A at the start.

False, it is the y-intercept of the function that indicates the amount at the start of the experiment.

B. Since y-intercepts indicate the amount of each bacteria at the start of the experiment, there was more of bacteria B than bacteria A at the start.

True, the y-intercept is given when x = 0, indicating the inicial value of the function.

C. Since the maximum value in the table for bacteria A is greater than the maximum value in the table for bacteria B, bacteria A has a faster growth rate than bacteria B.

False, because the maximum value of each table is given in different times, and also the inicial value of each table is different.

D. Since the minimum value in the table for bacteria A is less than the minimum value in the table for bacteria B, bacteria A has a slower growth rate than bacteria B.

False, the growth rate is not given by the inicial value. If we model both tables with an exponencial function, the count of bacteria A quadruped in two days, and the count of bacteria B doubled in one day, so they have the same growth rate.

6 0

3 years ago

A standard deck of cards has 52 cards. The cards have one of two colors: 26 cards in the deck are red and 26 are black. The card

sergij07 [2.7K]

Answer:

S={(heart), (diamond), (club), (spade)}

Step-by-step explanation:

In probability, a set is a well-defined collection of objects, product of an independent successful operation.

A sample space is the combination of all possible outcomes in an operation, so in this case, when we select one card and record the denomination, then we need to check what characteristic from the card are we looking for, from the problem we can see that is the denomination by itself, not the color, the number of the card, or anything else, and we only have 4 options of denomination so the sample space would be:

S={(heart), (diamond), (club), (spade)}

5 0

3 years ago

4ln x -8=12 its giving me other equations

kogti [31]

The solution of the given logarithmic equation is x = 28.1

<h3>How to solve the logarithmic equation?</h3>

Here we have the logarithmic equation:

4*ln(x - 8) = 12

And we want to solve this for x.

Remember the relations:

$ln(e^x) = x\\e^{ln(x)} = x$

First, we divide both sides by 4:

$ln(x - 8) = 12/4 = 3$

Then, if we apply the exponential equation to both sides of our equation, we get:

$e^{ln(x - 8)} = e^{3}\\\\x - 8 = e^3\\\\x = e^3 + 8 = 28.1$

If you want to learn more about logarithmic equations:

brainly.com/question/236421

#SPJ1

8 0

2 years ago

which of the following does not have any rectangular faces pentagonal prism hexagonal pyramid rectangular prism square pyramid

zvonat [6]

Hexagonal pyrimad is the answer.

3 0

3 years ago

Read 2 more answers

I need someone really good at math to help me please!! A home is purchased for $394,000 with a 14% down payment. Find the monthl

julia-pushkina [17]

9514 1404 393

Answer:

$2300.01

Step-by-step explanation:

The down payment is 14% of $394,000, so is ...

0.14 × $394,000 = $55,160

This means the principal amount of the loan is ...

$394,000 -55,160 = $338,840

__

The amount of the monthly loan payment is given by the amortization formula ...

A = P(r/12)/(1 -(1 +r/12)^(-12t))

where P is the principal amount, r is the annual interest rate, and t is the number of years. Filling in the values, we have ...

A = $338,840(0.072/12)/(1 -(1 +0.072/12)^(-12·30))

= $338,840(0.006)/(1 -(1.006^-360)) = $2300.01

The monthly payment is $2300.01.

_____

<em>Additional comment</em>

Such calculations are commonly done using a spreadsheet, financial calculator, or app. If you're doing a number of financial calculations, it can be a good idea to obtain and learn to use an appropriate tool.

3 0

3 years ago

What is the value of x when x + 7 = 21? A) -28 B) -14 C) 3 D) 14