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
crimeas [40]
3 years ago
12

Solve for x.....................

Mathematics
1 answer:
polet [3.4K]3 years ago
6 0

Answer:

B  x=3

Step-by-step explanation:

12x = 2x^2 +18

Divide by 2

12x/2 = 2x^2/2 +18/2

6x = x^2 +9

Subtract 6x from each side

6x-6x = x^2 -6x+9

0= x^2 -6x+9

Factor

What 2 numbers multiply to 9 and adds to -6

-3*-3 = 0

-3+-3 =-6

0= (x-3) (x-3)

Using the zero product  property

x-3 =0   x-3 =0

x=3   x=3

You might be interested in
Find the volume of a cone with a height of 7yd and a base diameter of 6yd . use the value 3.14 for π , and do not do any roundin
yarga [219]
I think the volume of the cone is 65.94yd because the radius is 3 and the height is 7 also 3 to the second power equals 9 then 3.14 multiplied by 9 equals 28.26 and finally 28.26 multiplied by 7/3 equals 65.94

V=3.14 x r^2 h/3
V=3.14 x 3^2 7/3
3 0
3 years ago
Briana buys a ring marked $49.99. She receives a 20% discount. Which equation can be used to find the sale price of the ring?
sergij07 [2.7K]
Answer B, s = 49.99(0.80)
5 0
3 years ago
If z varies jointly with x and y, x = 2 and y = 2, z = 7. Find z when x = 4 and y = 8.
Wittaler [7]

Answer:

56

Step-by-step explanation:

z varies jointly with x and y:

z = kxy

When x = 2 and y = 2, z = 7.

7 = k(2)(2)

k = 7/4

z = 7/4 xy

When x = 4 and y = 8:

z = 7/4 (4)(8)

z = 56

7 0
3 years ago
Is 1.7 greater than 1 7/9
Simora [160]

17 = 1 7/10

1.7 < 1 7/9

1.7 is less than 1 7/9

3 0
4 years ago
Read 2 more answers
The perimeter of a triangle is 50 mm. The lengths of 2 of the sides are 13.5 mm and 14.5 mm. Find the missing length.
Naddik [55]
The missing side length should be 22. Add 13.5 to 14.5 and you should get 28. Subtract 28 from the total perimeter (50) to get 22.
5 0
3 years ago
Other questions:
  • Which of the following illustrates the truth value of the given conditional statement?
    14·1 answer
  • Write words to match the expression 3+ (4 times 12)
    10·1 answer
  • -18x+9y=72 how do I solve that
    5·1 answer
  • Pls answer ASAP will mark brainliest if correct
    13·2 answers
  • Identify the methods<br> PLEASE HELP!!
    14·2 answers
  • For 4-5, write each conditional in “if-then” format.
    5·1 answer
  • DIVIDING RATIONAL EXPRESSIONS
    12·1 answer
  • Can somebody help me please
    12·2 answers
  • In the graph, how many miles does Drew drive to work?
    14·1 answer
  • joy is filling out her personal data sheet she knows that her weight is 100 pounds but the form requires her weight in kilograms
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!