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Serggg [28]
3 years ago
7

Please help and explain!! I really don't get this

Mathematics
1 answer:
const2013 [10]3 years ago
6 0
Average rate of change means find the slope of the secant line. So if there is a function f(x) and you want to find the average R.O.C over the interval [a,b], it would be (f(b)-f(a))/(b-a)

1. (f(3)-f(1))/(3-1)= (0-(-2))/2= 1, so D.

2. Same concept; (8-4)/(3-1)=2, so A.

3. Again, (39-(-1))/5= 8, B.
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A store buys a jacket for $20.00 and then sells it to customers for 80% more than that. What is the selling price of the jacket?
Elis [28]
Your answer would be 36.

Hope this helped!
8 0
3 years ago
Read 2 more answers
In the question, "35 is what percent of 40?" what is the 35?
schepotkina [342]

Answer:

35 is the 'is' and 40 is the 'of'

Step-by-step explanation:

is/of = %/100

35/40 = x/100

cross-multiply to get:

40x = 3500

x = 3500/40

x = 87.5

4 0
3 years ago
Write the following inequality in slope-intercept form. −6x + 2y ≤ 42
zubka84 [21]
Add the 6x to both sides. Then divide both sides by 2 to get y by itself.

y <= 6x + 42

Note: if it were a -2y, you’d have to flip the inequality sign when dividing by that negative 2.

:)
7 0
3 years ago
Read 2 more answers
Janaya buys a postcard from each travel destination she visits. Before starting her travels this year, Janaya had 20 postcards.
MrRa [10]

Answer:

The percentage increase in Jayana's postcard collection is 15%

Step-by-step explanation:

Jayana had 20 postcards last year

With 3 more postcards this year

From the given equation Quantity = Percent x Whole

Here;

Let P = Percent/100%

Quantity = Increment in postcard = 3 postcards

Whole = The total postcards from last year = 20 postcards

Hence,

3 postcards = P x 20 postcards

P = 3/20 = 0.15

Recall P = Percent/100%

∴ Percent = P x 100% = 0.15 x 100% = 15%

The percentage increase in Jayana's postcard collection is 15%

4 0
2 years ago
Remainder of 8529 divided by 42
Svetradugi [14.3K]
8529\div 42=203 r3

The remainder is 3.
4 0
3 years ago
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