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Irina-Kira [14]
3 years ago
9

What is the most useful about mathematics for human kind?

Mathematics
1 answer:
Dominik [7]3 years ago
6 0

It's useful so when you go to the grocery store you know how much of whatever you need and you can multiply, divide, and subtract if needed. Without mathematics we wouldn't be able to calculate things. If you're a cashier for example, you need to know how to count change and count the money the person gives you. If you're a customer, you need to know how much to give the cashier and that involves mathematics. I hope this helped!!!

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Let f(x) = 2x^2 - 4x + 1 <br><br> Find the values of f(1), f(0), f(2), f(-2), f(a)
Nataly [62]

Answers:

f(1) = -1

f(0) = 1

f(2) = 1

f(-2) = 17

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3 years ago
Which equation has a constant of proportionality equal to 1/2
Olin [163]
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Sergio [31]
A. all real numbers for both

Explanation:
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Range is the same but with y-values. If the graph went on further than what the picture shows, then it also would show that every y value is on the graph
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7 0
3 years ago
Show work and answer .............
Lelechka [254]

Answer:

1. 5

2. 5

3. -3

4.y= -1

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1.)x- 2y= -25 ; y=3x

x-2(3x)=(-25)

x-6x=(-25) ; -5x=(-25) ; x=5

2.) 5x+3y =40; x=y

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4.)x-y=9; x=-8y; -8y-y=9; -9y=9; y=-1

5.) 2x+2y=30; y=2x ; 2x+2(2x)=30; 6x=30; x=5

8 0
3 years ago
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