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kirill [66]
3 years ago
7

Which is true regarding the graphed function f(x)?

Mathematics
2 answers:
fomenos3 years ago
5 0

F(5)=-1

Thats it.................

vampirchik [111]3 years ago
5 0

Answer: Second option.

Step-by-step explanation:

By definition, a relation is a function if for each input value (value of x) there is an unique output value (value of y).

1) For f(0)=3 the input value is x=0 and the output value is y=3, obtaining the point (0,3) which is not true for the function f(x) shown in the graph.

2) For f(5)=-1 the input value is x=5 and the output value is y=-1, obtaining the point (5,-1) which is true for the function f(x) shown in the graph.

3) For f(3)=2 the input value is x=3 and the output value is y=2, obtaining the point (3,2) which is not    true for the function f(x) shown in the graph.

4) For f(2)=-2 the input value is x=2 and the output value is y=-2, obtaining the point (2,-2) which is not true for the function f(x) shown in the graph.

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Some of the steps for completing the square to solve x2 + 5x = 2 are shown. x2 + 5x = 2 x2 + 5x + = 2 + Which are solutions of x
Rufina [12.5K]
The solutions would be +0.37 and -0.37.

When completing the square, we take 1/2 of the value of b (in this case 5).  5/2=2.5.  We then square this number:  2.5²=6.25.  We add this value to both sides of the equation:

x²+5x+6.25 = 2+6.25
(x+2.5)² = 8.25

Take the square root of both sides:
√(x+2.5)² = √8.25
x + 2.5 = 2.87

Subtract 2.5 from both sides:"
x+2.5-2.5 = 2.87-2.5
x = 0.37

We have to take the positive and negative values for solutions, however, since a square root has both positive and negative answers.
4 0
3 years ago
Read 2 more answers
Suppose you can somehow choose two people at random who took the SAT in 2014. A reminder that scores were Normally distributed w
Sindrei [870]

Answer:

22.29% probability that both of them scored above a 1520

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 1497, \sigma = 322

The first step to solve the question is find the probability that a student has of scoring above 1520, which is 1 subtracted by the pvalue of Z when X = 1520.

So

Z = \frac{X - \mu}{\sigma}

Z = \frac{1520 - 1497}{322}

Z = 0.07

Z = 0.07 has a pvalue of 0.5279

1 - 0.5279 = 0.4721

Each students has a 0.4721 probability of scoring above 1520.

What is the probability that both of them scored above a 1520?

Each students has a 0.4721 probability of scoring above 1520. So

P = 0.4721*0.4721 = 0.2229

22.29% probability that both of them scored above a 1520

8 0
2 years ago
Help please (i pressed 0.09 by mistake)
Alja [10]

Answer:

The answer should be .25

Step-by-step explanation:

The answer should be .25 because:

- there are 4 places you can score and since you want it to land on 5 and there is only one 5 it counts as a 1

- the since there are 4 in total and you want to land on 1 you get 1/4 the number one standing for there only being one 5 and the 4 standing for the number of places to land on.

-then you convert the 1/4 into a decimal which makes .25


4 0
3 years ago
Read 2 more answers
Find the value of x. The dot represents the center of the circle,<br>​
djyliett [7]

Answer:

x=16\ units

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

Triangle ABC and ADE are congruent triangles by SSS Theorem postulate

therefore

x=8(2)=16\ units

5 0
3 years ago
Can some one help me please
KATRIN_1 [288]

Answer:

0

Step-by-step explanation:

Any number multiplied by zero is equal to zero. So if the product is zero, one factor must be zero. Since you already have a nonzero factor, the other must be zero.

8 0
3 years ago
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