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MrRissso [65]
3 years ago
12

Hello if you can please help me with this i will make you brainlliest.?

Mathematics
1 answer:
Ivan3 years ago
3 0

Answer:

209/48 or mixed number 4 \frac{17} \frac{48}

Step-by-step explanation:

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Pls help me<br><br> What is the awners
GenaCL600 [577]

Step-by-step explanation:

I didn't understand the question.

Do u want the function?

if so

y = ax  + b

at 0=0

at 1= 3

b = 0

at 1=3

3=a

y = 3x

if ur looking for something else, please tell me.

6 0
2 years ago
21.12 is what percent of 82.5 ?
Tanya [424]
21.12 is 25.6% of 82.5. I hope this helps. :)
5 0
3 years ago
How would you do a,b,c,and d
I am Lyosha [343]

a) You are told the function is quadratic, so you can write cost (c) in terms of speed (s) as

... c = k·s² + m·s + n

Filling in the given values gives three equations in k, m, and n.

28 = k\cdot 10^2+m\cdot 10+n\\21=k\cdot 20^2+m\cdot 20+n\\16=k\cdot 30^2+m\cdot 30+n

Subtracting each equation from the one after gives

-7=300k+10m\\-5=500k+10m

Subtracting the first of these equations from the second gives

2=200k\\\\k=\dfrac{2}{200}=0.01

Using the next previous equation, we can find m.

-5=500\cdot 0.01+10m\\\\m=\dfrac{-10}{10}=-1

Then from the first equation

[tex]28=100\cdot 0.01+10\cdot (-1)+n\\\\n=37[tex]

There are a variety of other ways the equation can be found or the system of equations solved. Any way you do it, you should end with

... c = 0.01s² - s + 37

b) At 150 kph, the cost is predicted to be

... c = 0.01·150² -150 +37 = 112 . . . cents/km

c) The graph shows you need to maintain speed between 40 and 60 kph to keep cost at or below 13 cents/km.

d) The graph has a minimum at 12 cents per km. This model predicts it is not possible to spend only 10 cents per km.

4 0
3 years ago
Toni wants to buy a shirt . The original price is $85 but it is on sale for 30% off Toni will pay15% sales tax how much will the
mixer [17]
 30%÷100% = 0.30; $85×0.30= $25.50; 85 - 25.50= $59.50.
 15%÷100% = 0.15; $59.5 ×0.15 =8.92; 59.50 - 8.92= $50.58
$50.58
6 0
3 years ago
Can someone help me with this?
Alla [95]

Answer:

d and e

Step-by-step explanation:

5 0
3 years ago
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