Answer:
A
Step-by-step explanation:
You can eliminate B and D because it’s using 
, but the question is asking 
. So it’s either A or C. They are both written correctly, but out of the two, A is correct because just that x ≠ 
part of it is what makes it true.
The reason being is that the only thing that won’t make 
true is when the denominator equals 0, because anything divided by 0 is undefined. So, when you plug for x in the denominator you get: 
. The 
part just turns into 7, and 7 - 7 is 0. So you don’t want x to equal .
<u>So the answer is A:</u> 
, 
±
There you go my friend!
I hope you understand and that this helps with your question! :)
Answer:
B. 28 minutes
Step-by-step explanation:
According to the given statement,
William weeds the whole garden in 45 minutes, then in one minute he will weed 1/45 of the garden
and
similarly, 1/75 of the garden in one minute.
When they both will work together, they will weed (1/45+1/75) of the garden in one minute
Solving the equation:
= 
Garden weeded in one minute by both = 0.036
So, number of minutes to weed whole garden = 1/0.036
= 27.77 minutes
Rounding off will give us: 28 minutes
So,
Option B is the correct answer ..
Answer:
Step-by-step explanation:
let, the length is z
thus the ratio will be 5z : 4z
perimeter = 2 (a + b)
360 = 2 ( 5z + 4z )
180 = 9z
z = 20 cm
length = 100 cm and width = 80cm
area = length * width
area = 100*80
area = 8000cm²
Answer: G does not show the relationship
Step-by-step explanation:
x is the number of months and he originally had 25 coins. The correct representation of this equation would be y=8x+25 since he adds 8 coins every month. So, G does not show the relationship.
