Answer:
(y - 4)(y + 4)
Step-by-step explanation:
y² - 16 ← is a difference of squares
Since y² and 16 are both squares separated by a difference , that is minus
A difference of squares factors as
y² - 16
= y² - 4²
= (y - 4)(y + 4)
assalam o aalaikum
Step-by-step explanation:
1. At the Blue Jays game, Steven Matz (height = 1.2m) throws a baseball(140g) straight in
the air with 95N of force for 30cm.
1. What is the speed of the ball 2.4 m above the ground?
2. What is the maximum height of the ball (assuming no air resistance)?
Answer:
x=0 y=2
Step-by-step explanation:
2x+3y=6 .... 1
-5x+2y=4 .... 2
Multiply 5 with equation 1 and multiply 2 with equation 2
Then we get
10x+15y=30
-10x+4y=8
-10x and +10x get canceled so 19y=38
y=38/19=2
substitute y value in equation 1 or 2 and find the value to get x
Answer: 80 men
Step-by-step explanation:
Let m represent the number of men , w , the number of women and c the number of children , then we have:
m : w = 4 : 5 ............... equation 1
w : c = 10 : 9 ............ equation 2
Multiply equation 1 by 2 so as to get the ratio m:w:c , that is
equation 1 becomes : m: w = 8 : 10
so the combine ration m : w : c is 8 : 10 : 9
The total ratio is therefore 8 + 10 + 9 = 27
number of men = ratio of men/ total ratio X 270
number of men = 8/27 X 270
number of men = 8 X 10
number of men = 80
