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Karo-lina-s [1.5K]
3 years ago
14

How do you solve for functions

Mathematics
2 answers:
VARVARA [1.3K]3 years ago
7 0
For example
f(x)=3x+2 and f(x)=x/x-1
shepuryov [24]3 years ago
5 0
The equation for a function is
f(x) = x + b

So consider this example function:
f(4) = 3x + 12
We know that x = 4 so we would substitute 4 for x.
f(4) = 3(4) + 12
f(4) = 12 + 12
f(4) = 24

Since f(x) is equivalent to y, you could also say;
f(4) = y
y = 24
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Hello, I gotta turn it turn in this question today, help!!!!!!
Sladkaya [172]

Answer:

2 or -2

Step-by-step explanation:

If x² - 8x = -12

Step 1

We find x by solving

x² - 8x = -12

We equate to zero

x² - 8x + 12 = 0

We factorise

x² - 6x - 2x + 12 = 0

x(x - 6) -2(x - 6) = 0

(x - 6) (x - 2) = 0

x - 6 = 0, x = 6

x - 2 = 0, x = 2

x = 6 or 2

Step 2

What is x - 4?

When x = 6

= 6 - 4 = 2

When x = 2

= 2 - 4 = -2

Therefore, x - 4 = 2 or -2

3 0
3 years ago
If you travel for 2 hours at an average speed of 60 miles per hour, how far did you
Bingel [31]

Answer: 120 miles

Step-by-step explanation:

In one hour you travel 60 miles

In 2 hours you travel 120 miles

Hope this helps!

8 0
3 years ago
Lynne was making cookies and she
fomenos

Answer:

11/2is the answer hope it helps

8 0
2 years ago
Elle placed a bucket under a leaky roof. The bucket was 310 full after 25 of an hour. How much water is leaking per hour?
kvasek [131]

Answer:

3/4 bucket

Step-by-step explanation:

Elle placed a bucket under a leaky roof. The bucket was 3/10 full after 2/5 of an hour. How much water is leaking per hour

Water leaking : time taken

Let x = amount of water leaking per hour

3/10 : 2/5 = x : 1

3/10 ÷ 2/5 = x / 1

3/10 × 5/2 = x / 1

15 / 20 = x / 1

Cross product

15 * 1 = 20 * x

15 = 20x

x = 15/20

= 3/4

3/4 bucket of water is leaking per hour

4 0
2 years ago
Is 56/7 a rational number or
Sati [7]

Answer:

Yes

Step-by-step explanation:

The definition of a rational number is a number that can be represented as a fraction. Since 56/7 is a fraction it must be a rational number. An irrational number is a number that cannot be represented as a fraction because it never ends and repeats without a pattern forever. An example of this is pi because pi can never exactly be represented as a fraction.

4 0
2 years ago
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