Answer:
first thing, take 3 pairs of equations and in each pair, make any one variable's coefficient equal to the coefficient of the same variable in the other equation and subtract the equations.
you will get 3 different equations:
x+y = 1
- 4x - 21z = 72
-x + 3z = -10 (simplified)
now take the value of x and y from equation 2 and 3 in terms of z and substitute x and y with those values
y = (72 + 21z)/-4
x = 3z + 10
as x + y = 1
you will get z = -4 after sloving the equation
now you have the value of one of the variables..
now we will substitute z in the equations to get the other variables
x = 3z + 10
x = 3(-4) + 10
x = -12 + 10
x = -2
Now y:
72+21(-4)/-4
(72 - 84)/-4
-12/-4
y = 3
so,
z = -4
x = -3
y = 3
I assume that it's brainly enough
The number that gives the exact value of 4 5/6 is 29/6
<h3>How to determine the number that gives the exact value of 4 5/6?</h3>
The number is given as:
Number = 4 5/6
Convert the above number to improper numbers
Number = 29/6
Hence, the number that gives the exact value of 4 5/6 is 29/6
Read more about fractions at:
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Answer:
754 logs
Step-by-step explanation:
If you are starting at 48 logs on the bottom row subtracting one log for each row you go up, then you should have 28 logs in the top row.
This is because 48-20=28
now you need to find the factorial of 48 starting at 28.
Factorial is like 1+2+3+4+5=15. So it is basically just adding every single whole number that are in between 2 whole numbers.
So for this equation you would need to do: 28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48= 754.
:) Hope that helped!
Answer:342
Step-by-step explanation:100+130+112=342
Answer:
x = 5±√31
Step-by-step explanation:
Step 1: Complete the Square
x² - 10x + 25 = 6 + 25
(x - 5)² = 31
Step 2: Solve for <em>x</em>
√(x - 5)² = √31
x - 5 = ±√31
x = 5±√31
And we have our answers!