Mathematics
Mathematics, 29.03.2021 22:30, greenbyron88

Need help with a few Algebra problems because I can't really do this atm. Problem 1:
x^2 - 13x - 41 = 4
Step 1: x^2 - 13x - 36 = 0
Step 2: (x-9)(x+4) = 0
Step 3: x - 9 = 0 x + 4 = 0
Step 4: x = 9 x = 4

There is a mistake in there. How should it be fixed?

Problem 2:
x^3 - 16x = 0
Step 1: (x-4)(x+4)
Step 2: x-4 = 0 x+ 4 = 0
Step 3: x = 4 / x = -4

If one of these steps are incorrect, list it and tell me how to fix it.

Problem 3:
2x^2 - 7x 3 = 1
Step 1: 2x^2 - 7x - 4 = 0
Step 2: x^2 - 7x - 4 = 0
Step 3: (x-8)(x+1) = 0
Step 4: (x-\frac{8}{4})(x+\frac{1}{4}) = 0
Step 5: (x-2)(4x+1) = 0
Step 6: x - 2 = 0 4x + 1 = 0
Step 7: x = 2 x = -\frac{1}{4}

One of these steps is incorrect, Tell me how to fix it along which step it is.

Show work for all 3 problems.

answer
Answers: 2

Other questions on the subject: Mathematics

image
Mathematics, 21.06.2019 20:30, bryce59
Suppose you just purchased a digital music player and have put 8 tracks on it. after listening to them you decide that you like 4 of the songs. with the random feature on your player, each of the 8 songs is played once in random order. find the probability that among the first two songs played (a) you like both of them. would this be unusual? (b) you like neither of them. (c) you like exactly one of them. (d) redo () if a song can be replayed before all 8 songs are played.
Answers: 2
image
Mathematics, 21.06.2019 21:00, famouzgal
Jordan got 27 out of 90 correct on his test . what fraction of the marks did her get correct
Answers: 2
image
Mathematics, 21.06.2019 22:00, taliyahjhonson1
The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample
Answers: 1
image
Mathematics, 22.06.2019 02:30, charleetrill8304
From a group of 10 men and 8 women, 5 people are to be selected for a committee so that at least 4 men are on the committee. howmany ways can it be done?
Answers: 2
Do you know the correct answer?
Need help with a few Algebra problems because I can't really do this atm. Problem 1:
x^2 - 13...

Questions in other subjects:

Konu
Chemistry, 27.01.2021 01:10