4 years ago

What is the amount of change? Show your work a. 85% of 210 b. 125% of 38

Mathematics

1 answer:

Stolb23 [73]4 years ago

7 0

Basically you need to multiply the percent by the number.

You might be interested in

What is the final amount if 1015 is decreased by 6% followed by a 19% increase?

sleet_krkn [62]

Answer:

1135.38

Step-by-step explanation:

100%->1015

100-6=94

94%->954.1

--------------------------------------------------

100%->954.1

119%->1135.379

≈1135.38

3 0

3 years ago

What is the answer?

Readme [11.4K]

Answer:

3,6

Step-by-step explanation:

7 0

3 years ago

How to find integers and their opposites closed under addtion

Digiron [165]

You can find additive inverse to find integers and their opposites closed under addition.

7 0

4 years ago

Read 2 more answers

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

3 years ago

Miguel and Jian go to a restaurant and eat dinner. The total cost of the meal is $75. Miguel and lar decide to split

natima [27]

Answer:

x+ y = 75

Step-by-step explanation:

The both paid a total of 75.

Therefore, in order to get 75 you would need to add the amount each of them paid.

8 0

3 years ago

Read 2 more answers