1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sophie [7]
3 years ago
13

Solve this please, and quick

Mathematics
2 answers:
rosijanka [135]3 years ago
8 0
Error: They subtracted 9x from both sides when they should have subtracted 12. You can’t subtract unlike terms
Correct: x=-5/16
Subtract 12 from both sides to get -5 on the left and add 7x and 9x to get 16x. Divide both sides by 16 to isolate x.
Viefleur [7K]3 years ago
3 0

Answer:

3.2

Step-by-step explanation:

7x + 12 + 9x = 7

16x + 12 = 7

       - 12    -12

16x = -5

16 divided by -5 is 3.2

x = 3.2

You might be interested in
Emily thinks the perfect tomato sauce has 8 cloves of garlic in every 500{ mL} of sauce. Raphael's tomato sauce has 12 cloves of
igomit [66]

For perfect solution we need to have :-  8 colves   in 500ml    solution

500   ml     has   8 cloves

1 ml             has     8 / 500 cloves

100ml         has   8 / 500  * 100  =    8/5  = 1.6 cloves

Raphael's mixture  

    900 ml  has 12 cloves

      1 ml     has   12 / 900 cloves

   100 ml has   12 / 900 *  100   =    12 / 9  =   1.33 cloves

so concentration of garlic in 100 ml solution of Raphael's solution is less than Emily's solution    so it is not garlicky enough.     ( option B)

5 0
3 years ago
Read 2 more answers
Each salt shaker holds 1 1/4
MrRa [10]

Answer: It will fill 8 salt shakers.

Step-by-step explanation:

7 0
4 years ago
Read 2 more answers
The total cost of four pens and seven mechanical pencils is $13.25. The cost of each pencil is .75 cents. Write an equation to f
Dovator [93]
X = pens and y = pencils

4x + 7y = 13.25
y = 0.75

4x + 7(0.75) = 13.25 
4x + 5.25 = 13.25
4x = 13.25 - 5.25
4x = 8
x = 8/4
x = 2 <===so each pen cost 2 bucks
5 0
3 years ago
Which certificate does Jenny require?
Airida [17]
Can you give some more details please thank you
7 0
3 years ago
Solve the inequality<br><br> -7x + 12 = 75
yulyashka [42]

Answer:

-9

Step-by-step explanation:

-7x+12=75

-12       -12

-7x= 63

divide by -7 on both sides

x = -9

7 0
3 years ago
Other questions:
  • Solve a(3 x-2b)=c(2x-2) for x
    6·1 answer
  • dona ate7/12. box of popcorn. Jack ate 4\10 box of popcorn the boxes of popcorn are the same size.write to explain how to use a
    7·1 answer
  • What is the factored form of these expressions?
    8·2 answers
  • Write a description of the data in the time line.
    12·1 answer
  • The equation of a circle is (x + 3)2 + (y – 5)2 = 81. Determine the coordinates of the center of the circle and the length of th
    15·1 answer
  • Bridget has 32 pencils and 48 pens she wants to make identical bags of pencils and pens to give to her friend what is the highes
    13·2 answers
  • Can someone please help me?
    10·1 answer
  • Please help:)I’m not good at math and need to get this done ASAP
    11·1 answer
  • What is the total cost of a $95.00 item with a sales tax of 6%
    14·2 answers
  • a local park is shaped like a square with sides 6 meters long. A circular splash fountain is being placed in the middle of the p
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!