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
harina [27]
3 years ago
8

Solve the equation. Check for extraneous solutions.

Mathematics
1 answer:
Sliva [168]3 years ago
3 0
Assume
if |a|=b
a=b and -a=b

so

9|9-8x|=2x+3
divide both sides by 9
|9-8x|=2/9x+1/3
assume
9-8x=2/9x+1/3 and
-9+8x=2/9x+1/3


9-8x=2/9x+1/3
times 9 both sides
81-72x=2x+3
add 72x both sides
81=74x+3
minus 3
78=74x
divide both sides by 74
39/37=x

other one
-9+8x=2/9x+1/3
multiply both sides by 9
-81+72x=2x+3
minus 2x both sides
-81+70x=3
add 81 to both sides
70x=84
divide boh sides by 70
x=6/5


x=39/37 and 6/5
check

9|9-8(39/37)|=2(39/37)+3
2646/37=189/37
false

9|9-8(6/5)|=2(6/5)+3
351/5=27/5
false

no soltion evidently, weird

You might be interested in
The base diameter and the height of a cone are both<br> equal to x units.
Vera_Pavlovna [14]

Answer:

π x³ /12 is the volume of the cone if  A cone has a height of x and a diameter of x

Step-by-step explanation:

The base diameter and the height of a cone are both equal to x units

Diameter of cone = x  units

Radius = Diameter /2

=> Radius of cone = x/2 units

Height of cone =x units

Volume of cone = (1/3) π r²h

r = radius h = height

=> Volume of cone =  (1/3)π (x/2)² * x

= (1/3) π (x²/4) * x

= (1/12)  π x³

= π x³ /12 cubic units

6 0
2 years ago
Can someone help me answer part b please .As I have no idea what it is ?
Elza [17]

Answer:

(4,1)

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
5(3 – x) &lt; -2x + 6,<br> Please help
svetlana [45]

Answer:

9<7x

Step-by-step explanation:

5(3-x) < -2x+6

15-5x<-2x+6

9<7x

then you can simplify it if you want

3 0
3 years ago
Plzz help me I need helpp
Ilya [14]

Answer:

-1.32-34.7= -36.02

Step-by-step explanation:

A negative minus a negative will always give you another negative.

So, to do this quickly just see this equation "-1.32-34.7" as this equation "1.32+34.7" and add a negative once you've finished.

1.32+34.7= 36.02

Now add the negative.

-36.02

3 0
3 years ago
Read 2 more answers
100 points. Please help. I'll give brainliest.
nata0808 [166]

A: 95 people dislike both

B: 81

C: 21

8 0
3 years ago
Other questions:
  • Two Friends met up for coffee and dessert. Each friend got a medium coffee and two cupcakes, and one friend bought a mug for $12
    10·1 answer
  • Sam opened a savings account with an initial deposit of $2,000. Since then, he has never made any other deposits or withdrawals.
    12·2 answers
  • Consider strings of length 10 which contain only letters from the set {A, E, I, O, U} and digits from {1, 3, 5, 7, 9}. Suppose r
    11·1 answer
  • Not sure what the answer is hope an expert can help
    9·2 answers
  • A psychology test has personality questions numbered 1,2,3, intelligence questions numbered 1,2,3,4, and attitude questions numb
    15·1 answer
  • What is .166 rounded up
    13·2 answers
  • What's the answer????????
    9·2 answers
  • Chrissy buys a pack of candy and eats 2 pieces per day. Find how many she eats in two weeks
    15·2 answers
  • The height of a fish tank is 1.1 feet, and the area of the tank's base is
    15·1 answer
  • AT&amp;T offers a deal for internet service that is $20 a month. There is an intial fee of $50. If Tim spent $330 on his interne
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!