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lisov135 [29]
3 years ago
14

Lisa wants to build a table and put a border around it. The table and border must have an area of 3,996 square inches. The table

is 42 inches wide and 36 inches long without the border. Which quadratic equation can be used to determine the thickness of the border, x?
Mathematics
1 answer:
Vinvika [58]3 years ago
3 0

Answer:

The answer is 2,484.

Step-by-step explanation:

First you would have to multiply 42 times 36 then subtract 1,512 from 3,996 you will get 2,484

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Please help!!
jenyasd209 [6]

Answer:

x = - 3

y = - 2

Step-by-step explanation:

Start with the second equation. Switch

3y = 2x               Divide by 3

3y/3 = 2x/3

y = 2x/3

Now go to the first equation. Put the value for y in the first equation.

x - 3(2x/3) = 3      Cancel the 3s on the left.

x - 2x = 3              Combine

-x = 3                    Multiply by -1

-1(-x) = 3(-1)

x = - 3

Now go back to the original equation I have called the second equation

2x = 3y

2(-3) = 3y                  Put in - 3 for x

- 6 = 3y                     Divide by 3

-6 / 3 = y

y = - 2


8 0
3 years ago
Are the following lines parallel, perpendicular, or neither?
natta225 [31]

Answer:

Perpendicular

Step-by-step explanation:

Parallel lines mean lines that have same slope but since both equations have different slopes which you can check by looking at m-value in y = mx + b. In this case m1 or first slope is -4/3 and m2 or second slope is 3/4.

Perpendicular means that both lines are reciprocal to each other. This means the perpendicular condition is or satisfies \displaystyle \large{m_1m_2 = -1 \longrightarrow m_1 = -\frac{1}{m_2} \longrightarrow m_2 = -\frac{1}{m_1}}

We have m1 = -4/3 and m2 = 3/4.

Therefore, -4/3 * 3/4 = -1 thus both lines are perpendicular to each other as it satisfies m1m2 = -1 condition.

8 0
2 years ago
PLZ HELP ANY1!!!!!!!!!!!
Ronch [10]
Its the last one because you plug in the 20(x) for example y=20x 
and your table looks like this 
x 0/2/4
y 0/40/80  y  x
because 20(2)=40 then you would do the same with the rest of the equation
20(4)= 80 there fore the last on is your answer 
3 0
3 years ago
9 is what percent of 50
il63 [147K]

Answer:

18

Step-by-step explanation:

9/50=18/100

3 0
3 years ago
It was estimated that 800 people would attend the play, but 752 actually attended. what is the percent error?
natima [27]

Answer:

94 percent

Step-by-step explanation:

7 0
3 years ago
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