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Viefleur [7K]
3 years ago
11

Please help me solve this and show the steps

Mathematics
2 answers:
Artist 52 [7]3 years ago
6 0
9x^3 - 4x = -18x^2 + 8
9x^3  + 18x^2 - 4x- 8 = 0
9x^2(x +2 )- 4(x + 2) = 0
(x+2)(9x^2 - 4) = 0
(x + 2)(3x + 2)(3x - 2) = 0
x + 2 = 0; x = -2
3x + 2 = 0; x = -2/3
3x - 2 = 0; x = 2/3
kozerog [31]3 years ago
5 0
9x^3 + 18x^2 -4x -8
Split the equation into 9x^3 + 18x^2 and -4x -8, then factor
9x^2 (x + 2) -4(x + 2)
So the factors are (9x^2 - 4) and (x + 2)
So X is either equal to -2 or +/- 2/3



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2x+3y=12 find four solutions​
solong [7]

Answer:

1. x=3,y=2

2.x=0,y=4

3.x=-3,y=6

4.x=6,y=0

Step-by-step explanation:

x=3, y=2

2(3)+3(2)=6+6=12

x=0, y=4

2(0)+3(4)=0+12=12

x=-3, y=6

2(-3)+3(6)=-6+18=12

x=6,y=0

2(6)+3(0)=12+0=12. Hope this helps!

5 0
3 years ago
I will mark brainliest ,thank, and rate to to the best answer!Please help! ASAP
Over [174]

Answer:

1st, 3rd, and 6th

Step-by-step explanation:

Let's look at each statment...

1.) Correct

Explanation: 10 percent of the students at the school participate in soccer. If 140 is 10% of the number of students at the school, there is more than 140 students at this school.

2.) Incorrect

Explanation: We've already established that the # of students at the school is <u>more</u> than 140.

3.) Correct

Explanation: 10% as a decimal is 0.1 Divide 140 by 0.1 and you get 1,400. So, the total number of students is 1,400.

4.) Incorrect

Explanation: We've already established that the number of students is 1,400, not 290.

5.) Incorrect

Explanation: We've already established that the number of students is 1,400, not 150.

6.) Incorrect

Explanation: If the percent was a ratio, it would be 10:100 or 10/100. This is because a whole percent is 100% and the percent of students who play soccer is 10%.

7.) Correct

Explanation: We've already established that the ratio would be 10:100 or 10/100. Thus, this is correct.

I hope this helps! :)

3 0
3 years ago
Read 2 more answers
Need a little help with this question please"?
zhuklara [117]
Y= 2x-3/4
M is the slope
B is the y-intercept
3 0
3 years ago
Randi scored r points at a basketball game.
steposvetlana [31]

Answer:

b,f

Step-by-step explanation:

b: if sandi scored 3 more points than randi, then sandis points are equal to 3+randi

f: so the equation is 3+r=s,

so input values

3+r=18

r=18-3

r=15

6 0
3 years ago
Please solve!!!!!!!!!!!
blagie [28]
The third option is the correcto answer
5 0
3 years ago
Read 2 more answers
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