This is a simultaneous system of two linear equations with two unknowns, as the number of unknowns equals the number of equations, we can solve it:
y = 5x + 21
y = -7x - 15
we can equate both equations, given the fact that both are equal to y:
y = y
5x + 21 = -7x - <span>15
</span>and solving for x:
5x + 7x = -15 - 21
12x = -36
x = -36/12
x = -3
then we substitute this result in the original equation:
y = 5x + <span>21
</span>y = 5(-3) + <span>21
</span>y = -15 + 21
y = 6
hence the solution is x = -3 and y = 6
It is shown as a sum of each digit multiplied by its matching place value<span> (units, tens, hundreds, etc.) For example: 4,265 = </span>4<span> x 1,000 + 2 x 100 + 6 x 10 + 5 x 1.</span>
Answer:
x = 9/8 = 1.125
Step-by-step explanation:
Step by step solution :
Step 1 :
1
Simplify —
2
Equation at the end of step 1 :
6 1
———————— - — = 0
(8x + 3) 2
Step 2 :
6
Simplify ——————
8x + 3
Equation at the end of step 2 :
6 1
—————— - — = 0
8x + 3 2
That picture is trying to tell us the area is
A = x² - 12x + 36
A = (x - 6)²
Since for a square
A = s²
s² = (x - 6)²
s = |x - 6|
Answer: |x-6|
Answer:
He was 148.5 cm tall first day of last year
Step-by-step explanation:
Cody new height is 165 cm
10% of 165 cm = (10/100)*165
=16.5 cm
Therefore last year, Cody was (165 - 16.5) cm tall
= 148.5 cm
