Answer:
65
Step-by-step explanation:
X = first venture, y = second venture, z = third venture
x + y + z = 15,000
x + z = y + 7000
3x + 2y + 2z = 39,000
these are ur equations.....
x + y + z = 15,000
x - y + z = 7000
--------------------add
2x + 2z = 22,000
x + y + z = 15,000....multiply by -2
3x + 2y + 2z = 39,000
-------------------
-2x - 2y - 2z = - 30,000 (result of multiplying by -2)
3x + 2y + 2z = 39,000
------------------add
x = 9,000
2x + 2z = 22,000
2(9000) + 2z = 22000
18,000 + 2z = 22000
2z = 22000 - 18000
2z = 4000
z = 4000/2
z = 2,000
x + y + z = 15,000
9000 + y + 2000 = 15,000
11,000 + y = 15,000
y = 15,000 - 11,000
y = 4,000
first venture (x) = 9,000 <==
second venture (y) = 4,000 <==
third venture (z) = 2,000 <==
Answer:
x = 
Step-by-step explanation:
Let the number be x
x + 2x² = 10
Factorize x + 2x²
x(1 + 2x) = 10
Divide both sides by (1 + 2x)
x =
Answer:
Arrange the variables to y intercept form: y=-x+2. We have the slope is -1, and the y intercept is 2. You should be able to draw a line from here.
Step-by-step explanation:
There are 90 different identification numbers possible.
<h3>What are the permutation and combination?</h3>
In terms of mathematical concepts, “permutation” and “combination” are related to each other.
The combination is the counting of selections that we make from n objects.
Oscar was not safeguarding his personal identification and chose a two-digit PIN for his debit card using the numbers 0 - 9.
There are 10 possible values for each digit of the PIN (namely: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9), so there are;
10 × 10 = 100 total possible PINs.
Now, because you can't use the same number twice, we subtract 10 from 100 because there are 10 numbers that can match themselves.
100 -10 =90
Hence, there are 90 different identification numbers possible.
Learn more about combination here;
brainly.com/question/24138361
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