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3 years ago

B) solve for x if x² +3x - 4 <0

2 answers:

7 0

You need to find the two numbers that add to -4 and multiply to 3
Those are-3 and 1-
(X-3) (x-1)
X=3 X=1

Now let’s check to make sure that when plugged in the answer is over 0.
3^2+3(3)-4=
9+9-4=14
14 is greater than 0
✅

1^2+3(1)-4=
1+3-4=0
0 is not greater than 0

So x is 3

iogann1982 [59]3 years ago

5 0

Answer:

x=4,−1

Step-by-step explanation:

hope i helped

plz mark me brainlest

and have a nice day:)

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Question 1 solution:
You have two unknowns here:

Let the Water current speed = W

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We are given two situations, where we can form two equations, and therefore solve for the two unknowns, W, R:

Part 1) W→ , R←(against current, upstream)
If Rita is paddling at 2mi/hr against the current, this means that the current is trying to slow her down. If you look at the direction of the water, it is "opposing" Rita, it is "opposite", therefore, our equation must have a negative sign for water:

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Part 2) W→ , R→(with current)
Therefore, R+W=3 - equation 2

From equation 1, W=R-2,
Substitute into equation 2.
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Answer:

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Step-by-step explanation:

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Answer:

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Answer:

Step-by-step explanation:

bc i’m right

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3 years ago

B) solve for x if x² +3x - 4 <0​

B) solve for x if x² +3x - 4 <0