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never [62]
3 years ago
12

How many roots do the following equations have? -12x2 - 25x + 5 + x3 = 0

Mathematics
2 answers:
frozen [14]3 years ago
7 0
The answer issssss 3!!!!
Luden [163]3 years ago
3 0
Answer: <span>The equations have 3 roots.
x=-1.971, 0.184, and 13.787
Please, see the attached file.
Thanks.</span>

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An astronaut who weighs 174 lb on Earth weighs 29 lb on the moon. If you weigh 102 lb on Earth, how much would you weigh on the
Leokris [45]

Answer:

34

Step-by-step explanation:

your weight become one sixth in the moon

4 0
3 years ago
9x+2y-27z=-155 -11x-y+37z=208 19x+6y-52z=-304
Paladinen [302]

Answer:

(x,y,z)=( -2, -1 ,5)

Step-by-step explanation:

9x+2y-27z=-155                                                        (1)

-11x-y+37z=208                                                        (2)

19x+6y-52z=-304                                                     (3)

(1) *3   ;(2) *6     ;(3)*1, you have

27x+6y-81z=-465                                                      (1)

-66x-6y+222z=1248                                                 (2)

19z+6y-52z=-304                                                      (3)


(1) +(2), you have

-39x+141z= 783                                                       (4)

(4) /3, you have

-13x +47z=261                                                          (4)


(2) +(3), you have

-47x+170z=944                                                       (5)


From ( 4) and (5), you have equations

-13x +47z=261                                                         (4)

 -47x+170z=944                                                       (5)


(4)*(-47);    (5)*13,  you have

611x-2209z=-12,267                                              (4)

-611x+2210z=12,272                                              (5)


(4)+(5), you have

z=5

Replace z=5 in (4), you have

611x- 2209*5=-12,267

611x- 11,045 =-12,267

611x=-1222

x= -2

Replace x=-2, z=5 in (1) , you have

9*(-2) +2y -27*5=-155

-18+2y-135=-155

-18+2y=-20

2y=-2

y=-1

Result (x,y,z)=( -2, -1 ,5)









3 0
3 years ago
The right rectangular prisms are similar.
Phoenix [80]

Answer:

A, B, E

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
One way to convert .9 to a percent would be to...
laila [671]

Answer:

this doesn't make any sense but here's a pic while you wait for your answer.

Step-by-step explanation:

4 0
3 years ago
here are two numbers which add up to 17. If one number is 13 more than the other, find the two numbers.
Musya8 [376]

Answer:

X+y=17

X=y+13

y+13+y-13=17-13

2y. =4

y=2.

X=2+13

X=15

<em><u>the two numbers are 2 and 15</u></em>

6 0
3 years ago
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