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masha68 [24]
3 years ago
5

Two equations are given below:

Mathematics
1 answer:
goldenfox [79]3 years ago
4 0
Since the second equation gives a value for a, we can substitute it into the other equation to find a value for B.

Let's substitute b-2 into the first equation wherever there is an a.

a - 3b = 4
(b-2) - 3b = 4
b - 2 - 3b = 4
-2 - 2b = 4
-2b = 6
b = -3

Now let's find a by substituting -3 into either of the equations to find the value of a.

a = b - 2
a = -3 - 2
a = -5

So your solution set  is (-5, -3)
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What is 0.3636363636 to the nearest thousandth?
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Your school wants to take out an ad in the paper congratulating the basketball team on a successful​ season, as shown to the rig
iogann1982 [59]

Answer:

x_1 =-14.43 in, x_2 = 2.426in

Since the measurement can't be negative the correct answer for this case would be x =2.426 in

Step-by-step explanation:

Let's assume that the figure attached illustrate the situation.

For this case the we know that the original area given by:

A_i = 7 in *5 in = 35in^2

And we know that the initial area is a half of the entire area in red A_i = \frac{A_f}{2}, so then:

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And we know that the area for a rectangular pieces is the length multiplied by the width so we have this:

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We multiply both terms using algebra and the distributive property and we got:

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x^2 +12 x -35 = 0

And we can solve this using the quadratic formula given by:

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Where a = 1, b =12 and c=-35 if we replace we got:

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x_1 =-14.43 in, x_2 = 2.426in

Since the measurement can't be negative the correct answer for this case would be x =2.426 in

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