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Goryan [66]
3 years ago
12

If you have the equations 2x + 3y = 18 and y = 2x + 12 and use the substitution method to solve, what would be the value of x? A

NSWER FAST!!!
Mathematics
1 answer:
Alex Ar [27]3 years ago
3 0

Answer:

x= -2.25

Step-by-step explanation:

2x+3(2x+12)=18

2x+6x+36=18

8x+36=18

8x= -18

x= -9/4= -2.25

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Studentka2010 [4]

Answer:

A,D, and E are the answers on E2020

3 0
3 years ago
There are 7 ushers and 11 technicians helping at the Harper Middle School fall play.
bearhunter [10]

Answer:

<h3>The ratio of technicians to all helpers  is 11 : 7, or \frac{11}{7} or 11 to 7.</h3>

Step-by-step explanation:

  • Given that there are 7 ushers and 11 technicians helping at the Harper Middle School fall play.
  • Let x be the number of ushers ( or helpers ).
  • Therefore x=7 helpers.
  • Let y be the number of technicians.
  • Therefore y=11 technicians.
<h3>To find the ratio of technicians to all helpers :</h3>

That is to find the ratio of y to x.

We can write the ratio of technicians to all ushers(helpers) as y : x

Which implies that 11 : 7,  (since y=11 and x=7)

Or \frac{11}{7} or 11 to 7

<h3>The ratio of technicians to all helpers  is 11 : 7, or \frac{11}{7} or 11 to 7</h3>
4 0
4 years ago
Laurie earns $6.50 per hour at the fruit
PtichkaEL [24]
Answer- 2 hours

6.50+3= 9.50
9.50•3= 28.5
54.50-28.50= 26
26/2= 13
13/ 6.50= 2
5 0
4 years ago
-6x+y=-2<br>x-3y=9 what is the solution set?
Anarel [89]
Mult. the 2nd eqn by 6 and then add this "new" equation to the 1st given eqn:

 -6x + y = -2
  6x -18y = 54
--------------------
        -17y = 52, or y = -52/17.  Subst. this value of y into either equation to find the value of x.
3 0
3 years ago
Marco puts his coins into stacks. Each stack has 10 coins.
Harrizon [31]

Answer:

Marco has $57.50 in total.

Step-by-step explanation:

17 x 10 = 170 quarters

170 x 0.25 = $42.50

11 x 10 = 110 dimes

110 x 0.10 = $11.00

8 x 10 = 80 nickels

80 x 0.05 = $4.00

3 0
3 years ago
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