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Marina CMI [18]

3 years ago

8

How many points need to be removed from this graph so that it will be a function?

2 answers:

dexar [7]3 years ago

4 0

3 points
do you see how the x value -3 has two points (-3,2) and (-3, 3)

the x value should never repeat in order for this graph or any graph or table to be a function

(-3,2) and (-3, 3)
one has to go....

(1,4) and (1,-4)
one has to go....

(2,-2) and (2,-4)
one has to go....

Nataliya [291]3 years ago

3 0

C.) 3 points because you can't have 2 points on the same y axis line.

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NISA [10]

For this case we must find the solution of the following quadratic equation:

$x ^ 2 + 5x + 7 = 0$

Where:

$a = 1\\b = 5\\c = 7$

Then, the solution is given by:

$x = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2a}$

Substituting the values:

$x = \frac {-5 \pm \sqrt {5 ^ 2-4 (1) (7)}} {2 (1)}\\x = \frac {-5 \pm \sqrt {25-28}} {2}\\x = \frac {-5 \pm \sqrt {-3}} {2}$

By definition we have: $i ^ 2 = -1$

$x = \frac {-5 \pm \sqrt {3i ^ 2}} {2}\\x = \frac {-5 \pm i \sqrt {3}} {2}$

Thus, we have two complex roots.

Answer:

The equation has no real roots.

4 0

4 years ago

Solve for n.<br><br> n+4+10=25

nexus9112 [7]

N+4+10=25
n+4= 15
n=11

6 0

3 years ago

Read 2 more answers

Dr. Caras was characterizing a cytochrome (an iron containing protein) from a new strain of bacteria. He obtained the following

olya-2409 [2.1K]

Answer:

0.5613

Step-by-step explanation:

Here mean strain of bacteria x = sum of all numbers/ total numbers = 0.5514 %

Standard deviation s = 0.0040 %

Test statistic

G = (x_{max} -x)/s = (0.5613 - 0.5514)/ 0.0040 = 2.475

95% confidence value for outlier for n = 8 and alpha = 0.05

G_{critical} = 2.1266

so here we see that G > G_critical , so we reject that the there is no outlier . the value of 0.5613 is and outlier.

7 0

3 years ago

Help me solve this thing por favor i only came for the answers

NeTakaya

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6 0

3 years ago

What is each product? For 5/10•10/3

Naily [24]

10 cancels out so its 5/3 :) Rate Me plz <span />

7 0

3 years ago