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swat32
3 years ago
5

Please help thanks!!

Mathematics
2 answers:
hammer [34]3 years ago
8 0

5|2x+3|=15


Steps to solve:

1. Divide both sides by 5.

2. Solve for the absolute value.

Now...

Possibility 1: 2x+3=3

3. Subtract 3 from both sides.

4. Divide both sides by 2.

Possibility 2: 2x+3=-3

3. Subtract 3 from both sides.

4. Divide both sides by 2.


Possibility 1: x = 0

Possibility 2: x = -3


Anna35 [415]3 years ago
5 0

First divide both sides by 5. Then you get the answer. -0 or 0 I'm not sure tho


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Can someone tell me if im right? PLEASE DONT JUST SAY YES if you don’t know
tia_tia [17]

Answer: You are incorrect, the slope is correct, but the actual y-intercept is 205 ft.

Then the equation is:

y = (-15 ft/min)*x + 205 ft

Step-by-step explanation:

Ok, let's solve this.

We know that water is drained from a reservoir, let's assume that we can model this situation with a linear relation:

y = a*x + b

Where x is time, y is the height of the water in the reservoir, a is the slope (in this case represents how much changes the height of the water in the reservoir in one unit of time) and b is the initial height of the water in the reservoir.

We know that for a line that passes through the points (x₁, y₁) and (x₂, y₂) the slope is:

a = (y₂ - y₁)/(x₂ - x₁)

For this particular case we know that after 2 minutes the height of the water is 175 ft, then we have the point (2 min, 175 ft)

and after 5 minutes (so 7 minutes in total), the height of the water is 100ft, then: (7 ft, 100ft)

Then the slope of this:

a = (100 ft - 175 ft)/(7 min - 2 min) = (-75ft/5min) = - 15 ft/min

Then our line is something like:

y = (-15ft/min)*x + b

To find the value of b, we can use the fact that when x = 2 min, y = 175 ft

So if we replace these two values in the equation we get:

175ft = (-15 ft/min)*2 min + b

175 ft = -30 ft + b

175 ft + 30 ft = b                  

(here is your problem, it seems like you subtracted instead of adding in this part)

205 ft = b

Then the equation is:

y = (-15 ft/min)*x + 205 ft

So you are incorrect (but only for a little bit), you computed wrong the y-intercept.

3 0
3 years ago
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Answer:

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Step-by-step explanation:

I did this on a graphic calculator so i can't really explain, but I hope this helps! :)

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Answer:

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Suppose a triangle has sides a, b, and c and the angle opposite the side of length a is acute what must be true?
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The true statement about the triangle is (a) b^2 + c^2 > a^2

<h3>How to determine the true inequality?</h3>

The sides are given as:

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