Answer:
Yes, the student is correct
Step-by-step explanation:
Given
Required
Does it represent the x intercept
At the x intercept, the value of x is 0.
So, the function 
becomes 
can be compared to
Hence, the student is correct
Answer:
A
Step-by-step explanation:
I think it is A because if you do the math when your double her time she has way more distance.
Answer:
The smallest integer is -27 and the integers are -27, -26, and -25
Step-by-step explanation:
We can represent this with:
x + x - 1 + x - 2 = -78
Simplify.
3x - 3 = -78
Add 3 to both sides.
3x = -75
Divide both sides by 3.
x = -25
So, the first integer is -25.
Subtract two to get the smallest integer.
-25 - 2 = - 27
Step-by-step explanation:
You are finding the whole
0.7 × 20 = 14
or
70% of 20 = 7/10 x 20 = 7/10 x 20/1 = 140/10
140/10
140/10 = 14/1
The minimum number of questions he need to do are 14
I'm not sure if you are finding the part or the whole
let me know if im wrong
Answer:
The sign is negative
Step-by-step explanation:
Given
Required
Determine the sign
The expression can be split into 3 factors
If x > 0 then x is positive and If y < 0 then y is negative
So, the expression becomes:
<em />
Leave only signs
So, we have:
So, we have:
<em>Hence, the sign of the expression is negative</em>
<em></em>
Take for instance;
The expression would be:
-- negative
