Answer: a11 = 3, a12 = 7, a21 = 1, a22 = -4
<u>Explanation:</u>
3x + 7y = 20
x - 4y = 9
A = ![\left[\begin{array}{ccc}3&7&20\\1&-4&9\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D3%267%2620%5C%5C1%26-4%269%5Cend%7Barray%7D%5Cright%5D)
<u>column 1 </u> <u>column 2</u>
row 1: (a11) 3 (a12) 7
row 2: (a21) 1 (a22) -4
The answer would be 9(8b+5)
this is how you do it...
1. find the GCF of both numbers in this one the GCF would be 9
now, what do you multiply 9 by to get 72... 8, so 8 would go into the parenthesis and because there is a variable there which is 'b' the 8 would become '8b' now what do you multiply 9 with to get 45? '5' so you would add 5 into the parenthesis and that would be your answer!
Hope this helped! :D
5x²y³ is the GCF
5 is the GCF of 10 and 15, to find the GCF of the variables, take the lowest exponent power of each of the variables
Answer:
y = x - 3
Step-by-step explanation:
Because as x increases by 1 y increases by 1, so y = x ,
but the y intercept is - 3
Answer: C
<u>Step-by-step explanation:</u>
1. DOF and GOH are vertical angles 1. Given
2. m∠DOF = m∠GOH 2. Vertical Angles Theorem
3. ∠DOF = 58° 3. Given
4. 58° = m∠GOH 4. Substitution
