Consider the given equations:
The first equation is as:
So, 
= 
Multiplying the given fractions, we get as
= 
Now, consider the second equation as:
Multiplying by '3' to both the sides of the equation, we get
So, the number which best completes both the equations is .
B=blue
g=green
r=red
2 times as many blue as green
b=2g
3 times as many red as blue
r=3b
subsitute 2g for b
r=3(2g)=6g
r=6g
r+g+b=765
so we subsitute
r=6g
g=g
b=2g
6g+g+2g=765
add like terms
9g=765
divide both sides by 9
g=85
subsitute
b=2b
b=2(85)
b=170
170 blue
Hi there,
OK were finding the unit rate for 60.00 dollar for 8 pizzas frist we divide
60.00/8=7.5
OK so that the answer $7.50 per pizza<span />
Answer:
I believe it is A, but I am not entirely sure.
Step-by-step explanation:
Answer: x - 3
Step-by-step explanation:
Factor:
2x^2 - 18
1. Factor out 2: 2(x^2 - 9)
2.Factor x^2 - 9 into (x-3)(x+3): 2(x - 3)(x + 3)
*Notice that x^2 - a^2 can always be factored into (x-a)(x+a)
where a is a constant so in this case, a is 9 which is also 3^2
so x^2 - 9 can be factored into (x - 3)(x + 3)
x^2 - 2x - 3
1. Think what two numbers multiplied together is -3 and added together is 2
-> 3 and -1 since 3(-1) = -3 and 3+ (-1) = 2
2. Factor x^2 - 2x -3 into (x - 3)(x + 1)
Therefore, since both 2x^2 - 18 and x^2 - 2x -3 do not have another common factor besides x - 3, x - 3 is the HCF of 2x^2 - 18 and x^2 - 2x -3.
