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3 years ago

Will 3600 to 3200 be and increase or decrease and what is the percentage

Mathematics

2 answers:

jeka943 years ago

6 0

Answer:

It is a decrease by 11.1%

Step-by-step explanation:

3600 to 3200 would be a decrease because 3200 is lesser than 3600.

It would be a decrease by 11.1%

This can be found by finding what percentage of 3600 3200 is.

We can do that by setting up the following expression"

3200/3600

That roughly equals 88.9%

To find the decrease we subtract 88.9% from the whole, or 100%.

100-88.9=11.1

Therefore, it is a decrease by 11.1%

madreJ [45]3 years ago

5 0

Decrease 11.11%

I know this I did this on brainly

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(5,30)

Step-by-step explanation:

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3 years ago

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3 years ago

3. Sam and Tim each have savings accounts. Every month they each put in some of their

Setler [38]

Answer:

$y = 30x +50$ --- Sam

$y = 20x +80$ --- Tim

Step-by-step explanation:

Given

Sam Tim

х --- f(x) --------------- g(x)

1 --- 80 --------------- 100

2 --- 110 --------------- 120

3 --- 140 --------------- 140

4 --- 170 -------------- 160

Required

Determine the y value

y value implies the equation of the table

Calculating the equation of Sam

First, we need to take any corresponding values of x and y

$(x_1,y_1) = (1,80)$

$(x_2,y_2) = (4,170)$

Next, we calculate the slope (m)

$m = \frac{y_2 - y_1}{x_2 - x_1}$

$m = \frac{170 - 80}{4 - 1}$

$m = \frac{90}{3}$

$m = 30$

Next, we calculate the line equation using:

$y - y_1=m(x-x_1)$

$y - 80 = 30(x - 1)$

$y - 80 = 30x - 30$

Make y the subject

$y = 30x - 30 + 80$

$y = 30x +50$

Calculating the equation of Tim

First, we need to take any corresponding values of x and y

$(x_1,y_1) = (1,100)$

$(x_2,y_2) = (4,160)$

Next, we calculate the slope (m)

$m = \frac{y_2 - y_1}{x_2 - x_1}$

$m = \frac{160 - 100}{4 - 1}$

$m = \frac{60}{3}$

$m = 20$

Next, we calculate the line equation using:

$y - y_1=m(x-x_1)$

$y - 100 = 20(x - 1)$

$y - 100 = 20x - 20$

Make y the subject

$y = 20x - 20+100$

$y = 20x +80$

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3 years ago