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Sergio [31]
3 years ago
13

How do you work out 3x-2(x+4)=22?

Mathematics
1 answer:
Olenka [21]3 years ago
6 0

Answer:

x=30

Step-by-step explanation:

To solve this equation, simplify using the distributive property and combining like terms. Then solve for x through inverse operations.

3x-2(x+4)=22

3x-2x-8=22

x-8=22

x-8+8=22+8

x=30

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A party rental company has chairs and tables for rent. The total cost to rent 3 chairs and 2 tables is $18. The total cost to re
DerKrebs [107]
C= chair cost
t= table cost

Create two equations with the given information. Solve for one variable in equation one. Substitute that answer in equation two. Then you can solve for the needed information.
3c+2t=$18
5c+6t=$48

3c+2t=18
Subtract 2c from both sides
3c=18-2t
Divide both sides by 3
c=(18-2t)/3

Substitute the value for c in equation two:
5c+6t=$48
5((18-2t)/3)+6t=48
(90-10t)/3+6t=48
Multiply everything by 3 to eliminate fraction
(3)((90-10t)/3)+(3)(6t)=(3)(48)
90-10t+18t=144
90+8t=144
Subtract 90 from both sides
8t=54
Divide both sides by 8
t=$6.75 cost for table

Substitute the t value to solve for c:
3c+2t=18
3c+2(6.75)=18
3c+13.50=18
3c=4.50
c=$1.50 chair cost

Check:
5c+6t=$48
5(1.50)+6(6.75)=48
7.50+40.50=48
48=48

Hope this helps! :) If it does, please mark as brainliest.
7 0
2 years ago
What is the slope of the line that passes through the points (9, 4)(9,4) and (3, 9)(3,9)? Write your answer in simplest form.
nalin [4]

Answer:

I’m guessing the double points is a typo.

Slope: -5/6

Step-by-step explanation:

Hope this helps <3

Btw love your username <333

6 0
2 years ago
Read 2 more answers
Daniel used wire fencing to form a border around a circular region in his back yard.
koban [17]

Answer:

31.4 yards

Step-by-step explanation:

credits: ApusApus

source: brainly.com/question/9514844

3 0
3 years ago
PLEASE HELP! [99 POINTS] !! SERIOUS ANSWERS ONLY !!!
umka21 [38]
Hello!

We can find out our answer by plugging in the point (1,1) to see which equation works.

y=1.4(1.2)≠1
y=1.2≠1
y=0.5+0.3≠1
y=0.2+1.2≠1

As you can see, none of these answers are correct. You could make the last equation true by switching 0.2 to -0.2. It may have been a typo, so I would say the best answer is D.

I hope this helps!
5 0
3 years ago
Read 2 more answers
40 points and brainliest if u help me out!!!
tia_tia [17]

Answer:

( 2, 7)

Step-by-step explanation:

4-(-3)= 2

(-4)-(-6)= 7

8 0
3 years ago
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