Answer: The correct option is (C)
Step-by-step explanation: We are given to select the correct expression that is equivalent to the expression below:
We will be using the following properties of exponents:
We have
Therefore, the required equivalent expression is
Thus, (C) is the correct option.
The correct simplification of the expression is .
Option C. is correct.
Here, we have,
To simplify the expression, we apply the power of a power rule,
which states that .
In this case, raised to the power of 2 can be simplified as follows:
Therefore, the correct simplification of is .
Option C. is correct.
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How many points on average, can Jenny expect to make when she shoots a one-and-one (when she only gets a second shot if she makes the first)?
A.
0
B.
2
C.
1
D.
.96
E.
.36
f(x) = 2x2 – x + 1
f(x) = x2 + 2x – 1
f(x) = x2 – 2x + 1
The graph of which function has an axis of symmetry at x = -1/4 is :
Discriminant of quadratic equation ( ax² + bx + c = 0 ) could be calculated by using :
From the value of Discriminant , we know how many solutions the equation has by condition :
D < 0 → No Real Roots
D = 0 → One Real Root
D > 0 → Two Real Roots
Let us now tackle the problem!
An axis of symmetry of quadratic equation y = ax² + bx + c is :
f(x) = 2x² + x – 1 → a = 2 , b = 1 , c = -1
Axis of symmetry →
f(x) = 2x² – x + 1 → a = 2 , b = -1 , c = 1
Axis of symmetry →
f(x) = x² + 2x – 1 → a = 1 , b = 2 , c = -1
Axis of symmetry →
f(x) = x² – 2x + 1 → a = 1 , b = -2 , c = 1
Axis of symmetry →
Grade: High School
Subject: Mathematics
Chapter: Quadratic Equations
Keywords: Quadratic , Equation , Discriminant , Real , Number
The graph of function has an axis of symmetry as .
Further explanation:
The standard form of a quadratic equation is as follows:
The vertex form of a quadratic equation is as follows:
Axis of symmetry is the line which divides the graph of the parabola in two perfect halves.
The formula for axis of symmetry of a quadratic function is given as follows:
The first function is given as follows:
The above function is in standard form with , and .
Then its axis of symmetry is calculated as,
The axis of symmetry of first function is .
Express the function in its vertex form,
The above equation is in the vertex form with , and .
Therefore, its axis of symmetry is given as,
The graph of function is shown in Figure 1.
The second function is given as follows:
The above function is in standard form with , and .
Then its axis of symmetry is calculated as,
The axis of symmetry of second function is .
The third function is given as follows:
The above function is in standard form with , and .
Then its axis of symmetry is calculated as,
The axis of symmetry of third function is .
The fourth function is given as follows:
The above function is in standard form with , and .
Then its axis of symmetry is calculated as,
The axis of symmetry of fourth function is .
Therefore, the function has an axis of symmetry as .
Learn more:
1. A problem on graph brainly.com/question/2491745
2. A problem on function brainly.com/question/9590016
3. A problem on axis of symmetry brainly.com/question/1286775
Answer details:
Grade: High school
Subject: Mathematics
Chapter: Functions
Keywords:Graph, function, axis, f(x), 2x^2+x-1, axis of symmetry, symmetry, vertex, perfect halves, graph of a function, x =- 1/4.
Answer:
a) The probability is 0.04
b) The probability is 0.36
c) The pprobability is 0,25
d) The probability is 0.09
Step-by-step explanation:
Lets calculate areas:
the target has a radius of 10 inces, hence the target area has a area on 10²*π = 100π square inches.
a) A circle of 2 inches of radius has an area of 2²π = 4π square inches, hence the probability of hitting that area is 4π/100π = 1/25 = 0.04
b) If the dart s within 2 inches of the rim, then it is not at distance 8 inches from the center (that is the complementary event). The probability for the dart to be at 8 inches of the center is 8²π/100π = 64/100 = 16/25 = 0.64, thus, the probability that the dart is at distance 2 or less from the rim is 1-0.64 = 0.36.
c) The first quadrant has an area exactly 4 times smaller than the area of the target (each quadrant has equal area), thus the probability for the dart to fall there is 1/4 = 0.25
d) If the dart is within 2 inches from the rim (which has probability 0.36 as we previously computed), then it will be equally likely for the dart to be in either of the 4 quadrants (the area that is within 2 inches from the rim forms a ring and it has equal area restricted on each quadrant). Therefore, the probability for the dice to be in the first qudrant and within 2 inches from the rim is 0.36*1/4 = 0.09.
A. 41
B. –7
C. –3
D. 25
Answer:
15,000 Letters
Step-by-step explanation: