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Brums [2.3K]
3 years ago
8

Solve for f(3). f(x) = 2x – 4

Mathematics
1 answer:
k0ka [10]3 years ago
4 0

Answer: 2

Step-by-step explanation:

All you need to do is plug in 3 for x

2(3)-4

6-4

=2

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If 3a+4a=14, and b+6b=21, then 7(a+b) =<br><br> Help and show work!
den301095 [7]
Hello!

You have to find what a and b are

3a + 4a = 14
b + 6b = 21

Lets do a first

3a + 4a = 14

Combine like terms

7a = 14

Divide both sides by 7

a = 2

Now lets do b

b + 6b = 21

Combine like terms

7b = 21

Divide both sides by 7

b = 3

Put a and b into the third equation

7( 2 + 3) = 

Do what is in parenthesis first

7(5) = 

Multiply

35

The answer is 35

Hope this helps!
8 0
3 years ago
Read 2 more answers
Find the factors of each number in classify each number as a prime or composite<br> 18,37,48
zepelin [54]

18=1,2,3,9,18

37=1,37

48=1,2,3,16,24,12,4,6,8,48

Prime no. is a number that is divisible only by itself and 1

So, here 37 is a prime no.

18 and 48 are composite no.s

7 0
3 years ago
Find the slope if it exists, of the line containing the pair (3,4) and (3,-7)
borishaifa [10]
So you've got a cartesian plane, right? There are two coordinates here. Plot the first one ((3.4)) first. the '3' is on the x axis and the '4' is on the y axis. Go 3 across until you get to 3. and then go 4 up. Put a dot there.
Next, also plot the second one. To do this, go to 3 on the x axis, and then go down until you get to -7 on the y axis. Plot your point with a dot. Then, join the dots up, and hopefully, it'll be a linear relationship! 
5 0
3 years ago
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A marker is 0.13 meters long. What is the length in millimeters?
Kamila [148]

Answer:

The length in millimeters 130 mm

Step-by-step explanation:

You are going to multiply 0.13 by 1000 to get a total of 130

5 0
3 years ago
Read 2 more answers
*******************
Dafna11 [192]

Answer:

$10

Step-by-step explanation:

$45 x 5 = 225

$225 + $10 = $235

3 0
4 years ago
Read 2 more answers
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