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expeople1 [14]
3 years ago
14

Please help 5x^2+21x+4

Mathematics
2 answers:
SVEN [57.7K]3 years ago
8 0

Answer:

(5x+1) (x+4)

Step-by-step explanation:

Daniel [21]3 years ago
5 0
I think it’s (x+4)*(5x+1)

Write 21x as a sum ~ 20x + x

5x^2+20x+x+4

Then you factor out the 5x from the expression

5x * (x+4) + x+4

Then you factor out x+4 from the expression

(X+4) * (5x+1)

Then that’s your answer :) have a great day
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4 0
3 years ago
Which ordered pair represents the solution to the system of equations? {4x−2y=18−3x−4y=−8 (4, −1) (5, 1) (−1, 4) (43, 1)
Ilia_Sergeevich [38]

Answer:

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Step-by-step explanation:

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3 years ago
Two trains leave stations 360 miles apart at the same time and travel toward each other. One train travels at 70 miles per hour
cricket20 [7]
S=d/t     ⇒d=s*t
s=speed
d=distance
t=time

The first train :
d=x

x=70 miles/h*t                             ⇒   x=70t  (1)

The second train
d=360 miles - x

360 miles - x=80 miles/h*t          ⇒360-x=80t   ⇒ x=360-80t   (2)

therefore, with the equations (1) and (2) we have a systeme of equations:

x=70t
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we can solve this system of equations by equalization method.

70t=360-80t
70t+80t=360
150t=360
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Answer:  the first train meet with the second train in 2 hour 24 minutes. 


3 0
3 years ago
Read 2 more answers
E U F {2,4,6,8,} true or false
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Fed [463]

Answer:

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Step-by-step explanation:

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