3 years ago

What the expression is?

Mathematics

2 answers:

Svetradugi [14.3K]3 years ago

7 0

Answer:

The answer is 29

Stolb23 [73]3 years ago

5 0

Answer:

Step-by-step explanation:

You might be interested in

A population of mice is increasing exponentially. On Monday there were 120 most. One month later there were 132 most. Ready func

djyliett [7]

Answer:

$y=120 * 1.1^x$ --- function

The monthly rate is 10%

Step-by-step explanation:

Given

Let

$x \to months$

$y \to mice$

So, we have:

$(x_1,y_1) = (0,120)$ --- Monday

$(x_2,y_2) = (1,132)$ --- One month later

Required

The function

The function is represented as:

$y=ab^x$

In $(x_1,y_1) = (0,120)$ , we have:

$120 = a * b^0$

$120 = a * 1$

$120 = a$

$a=120$

In $(x_2,y_2) = (1,132)$ , we have:

$132 = a * b^1$

$132 = a * b$

Substitute: $a=120$

$132 = 120 * b$

Solve for b

$b = \frac{132}{120}$

$b = 1.1$

So, the function is:

$y=ab^x$

$y=120 * 1.1^x$

To calculate the monthly rate (r), we have:

$y =a(1 + r)^x$

Compare to: $y =ab^x$

$1 + r = b$

Make r the subject

$r = b-1$

Substitute $b = 1.1$

$r = 1.1-1$

$r = 0.1$

Express as percentage

$r = 0.1*100\%$

$r = 10\%$

5 0

2 years ago

If you pay $43 for a set of Pokémon cards online that were listed for $40 what is the tax percent you were charged

Alex777 [14]

Amount of tax paid = 43-40 = 3

Tax rate = 3/40 = 0.75

0.75 x 100 = 7.5%

Tax rate = 7.5%

3 0

2 years ago

A race car is equipped with a computer that records the reading on its speedometer every second during a race. if you graph this

Eva8 [605]

D.) Dependent variable is "<span>instantaneous velocity" as it gives information of velocity at every second

Hope this helps!</span>

3 0

3 years ago

Read 2 more answers

How do u upload a pict of a problem

Trava [24]

Answer:

take a screenshot, then copy and paste it to your question

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

What is 2/3 divided by 2/9

serg [7]

Your answer: 2/3/2/9 = 0.037037037037037

4 0

3 years ago

Read 2 more answers