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3 years ago

F(x) = -x +2 g(x) = 4.0 – 8

Mathematics

1 answer:

Sladkaya [172]3 years ago

3 0

1) x=1

2) x=-4

hope that helped

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36x – 8y2 when x = 3 and y = –6

sergiy2304 [10]

Welcome to Brainly! :)

I cannot understand your equation, therefore I have put it as 36x + 8y + 2. If I'm wrong let me know and I'll fix everything. :)

We need to plug in our values for what we are given.

Let us learn about plugging in.

Let's start with an example equation:

1x + 3y + 1 - Values: y = 2, x = 4 This is a simple equation.

- When it tells you to plug in or tell you the values, that's your ket to plug in the variable for what it tells you.

Now, let's solve this example, our equation is:

1(4) + 3(2) + 1

Now, we have the original equation but plugged in. Next we simplify:

4 + 6 + 1

Add it up and get 11.

Great! Now that we are done with notes, we can solve.

36x – 8y + 2

It tells us that x = 3 an y = 6. Like the equation, we need to plug it in.

$36(3) - 8(-6)+2$

Great, now we need to simplify.

$36(3)-3(-6)+2 \\ 108 + 18+2\\$

Cool, now we simplify and get 128!

Great job!

I hope you had amazing experience with brainly! :D

8 0

4 years ago

Read 2 more answers

Let f(x)=√3x and g(x)=x-6 What's the smallest number that is in the domain of fog?

yaroslaw [1]

9514 1404 393

Answer:

Step-by-step explanation:

Maybe you have ...

f(x) = √(3x)

g(x) = x-6

Then ...

f(g(x)) = √(3(x -6))

The square root function is only defined for non-negative arguments, so we require ...

3(x -6) ≥ 0

x -6 ≥ 0 . . . . . divide by 3

x ≥ 6 . . . . . . . . add 6

The smallest number in the domain of f(g(x)) is x = 6.

4 0

3 years ago

John is buying new shoes. He finds the shoes he wants on sale for 30%, and the original price is $88. How much will he pay for t

Brilliant_brown [7]

Answer:

61.6 dollars

Step-by-step explanation:

So, lets go over what we know:

The shows orginally cost 88 dollars.

They are 30% less than that.

This basically means that the shoes will cost 70 percent of their orginal price.

We can basically find the new cost by multiplying the 88 dollars by the 70 percent.

Or, multiplying 88 by 0.7, which is the decimal form of 70%.

88*0.7=61.6

How did I get this?

Multiply 80 by 0.7:

7*8=56

We have 0.7 so it = 5.6

However, it's tens place is 80, not 8, so it will be = 56

It is the same thing in the ones place, however it is 8 not 80, so it will be 0.7*8

= 5.6

56+5.6=61.6

So 61.6 is our answer.

Hope this helps!

4 0

3 years ago

Read 2 more answers

The wages

mihalych1998 [28]

Answer:

£ 144

Step-by-step explanation:

the formula would be :

w = n * r

finding the wages for 20 hours at a rate of 7.20 hours can be solved like this:

w = n *r

w = 7.20 * 20

<u>w =£ 144</u>

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8 0

3 years ago

A car travels 45 miles on one gallon of gas.

Anni [7]

Answer:

Your answer:

y=45x

(Y=miles driven)

(x=gas used)

Step-by-step explanation:

6 0

3 years ago