Answer:
Step-by-step explanation:
The vertex form of a parabola is given by:
, where V(h,k) is the vertex of the parabola.
The given parabola has vertex (1,1).
This implies that: .
Put these values into the vertex form equation.
The y-intercept of this parabola is: (0,-3).
This point lies on the parabola hence it must satisfy its equation.
The equation now becomes
To find the x-intercept, put y=0 into the equation:
Divide through by -4.
Take plus or minus square root of both sides.
or
or
Therefore the x-intercepts are:
To the nearest hundredth, we have
Answer:
a) 9 km
b) 18 km
c) She runs at a constant speed of 9 km/h
Step-by-step explanation:
9514 1404 393
Answer:
A) B. 18-6
B) 20÷4
C) 20
Step-by-step explanation:
<u>Part A</u>
The order of operations tells you that the first step is to evaluate any expressions in parentheses. Here, that means you first evaluate (18 -6).
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<u>Part B</u>
After parentheses have been removed, the next step is to perform multiplication and division. Here, there is only one term involving division, so you divide 20 by 4 as your second step.
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<u>Part C</u>
After you have done parts A and B, your expression is ...
3 + 12 + 5
The value of this sum is 20.
Answer:
(12+3x)x
Step-by-step explanation:
the other 3 can be simplified into 15x, but (12+3x)x = 12x+3x^2