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postnew [5]
3 years ago
5

Solving two linear equations. 4=3a-14?

Mathematics
2 answers:
sp2606 [1]3 years ago
4 0
    4 = 3a - 14
<u>+14</u>       <u>+14
</u>  18           0
   18 = 3a
18 ÷ 3 = 6<u>
</u>a = 6
<u>
</u>Hope this helps,
♥<em>A.W.E.</em><u><em>S.W.A.N.</em></u><em />♥<u>

</u>
kykrilka [37]3 years ago
3 0
Not too sure but got a=6

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What is the value of n in the equation (1)/(2)(n-4)-3=3-(2n+3)
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(1/2)(n-4)-3=3-(2n+3)

n = 2

but if it is

(n-4)-3=3-(2n+3)

n = 7/3

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What are the coordinates of one of the vertices of a rectangle when two sides are given by the lines x - 3y = -8 and 3x + y = 6?
Aleonysh [2.5K]

Answer:

(1, 3)

Step-by-step explanation:

x - 3y = -8

3x + y = 6

Isolate a variable in one of the equations:

y = 6 - 3x

Substitute the value of y into the other equation:

x - 3(6 - 3x) = -8

Use distributive property:

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Combine like terms:

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5 0
3 years ago
One number is -3 times the first number. The sum of the numbers is -4. What is the second number?
kobusy [5.1K]
Lets say that the first number is x and the second number is y.
from the question we know that:
y=-3x and x+y=-4
from there, you need to replace the y in the second equation with -3x since we know that is what y equals so we can have an equation with only one variable.
x+-3x+-4
Then you solve for x.
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6 0
3 years ago
An urn contains 5 red, 6 blue, and 8 green balls. If a set of 3 balls is randomly selected, what is the probability that each of
monitta

Answer:

As a fraction, the answer is exactly 86/969

In decimal form, the answer is approximately 0.08875

=====================================================

Work Shown:

The assumption is that no replacements are made for each selection.

5 red, 6 blue, 8 green

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A = P(3 red) = (5/19)*(4/18)*(3/17) = 10/969

B = P(3 blue) = (6/19)*(5/18)*(4/17) = 20/969

C = P(3 green) = (8/19)*(7/18)*(6/17) = 56/969

D = P(3 all same color)

D = A+B+C

D = 10/969 + 20/969 + 56/969

D = (10+20+56)/969

D = 86/969

D = 0.08875

6 0
3 years ago
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