Answer:
<h3>xy = -7/2</h3>
Step-by-step explanation:
Given the system of equation;
x +y +z = 2 ......1
2x + 3y - z = -3 .....2
3x + y + z = 4....3
Add 1 and 2;
x+2x + y + 3y = 2-3
3x + 4y = -1 ..... 4
Add 2 and 3
2x+3x + 3y + y = -3+4
4x + 4y = 1 ..... 5
Equate 4 and 5 and solve;
3x + 4y = -1 ..... 4
4x + 4y = 1 ..... 5
Subtract
3x - 4x = -1-1
-x = -2
x = 2
substitute x - 2 into 4;
From 4; 3x+4y = -1
3(2) +4y = -1
6 + 4y = -1
4y = -1-6
4y = -7
y = 7/-4
y = -7/4
Product of x and y = 2 * -7/4 = -7/2
Answers: 0.125, 1, 8, 64, 512
Step-by-step explanation: Hope this helps! :)
Answer:
(z−5)(z−5)
Step-by-step explanation:
Let's factor z2−10z+25
z2−10z+25
The middle number is -10 and the last number is 25.
Factoring means we want something like
(z+_)(z+_)
Which numbers go in the blanks?
We need two numbers that...
Add together to get -10
Multiply together to get 25
Can you think of the two numbers?
Try -5 and -5:
-5+-5 = -10
-5*-5 = 25
Fill in the blanks in
(z+_)(z+_)
with -5 and -5 to get...
(z-5)(z-5)
Y=ax+b
3=-8(0)+b
3=0+b
3=b
Y=-8x+3
(I think this is right, but u might want to double check)