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finlep [7]
3 years ago
7

Helpppppppppppppppppppppppppp

Mathematics
2 answers:
slavikrds [6]3 years ago
8 0
An even function is symmetric with respect to the y-axis. One way to identify an even function is to check the exponents of its terms, all of which must be even. For constants, we assume the exponent is zero (still considered an even number for this purpose). The first function will have an odd exponent because the expansion has a 2x term. The second function has 8x, which is also an odd exponent of 1. The third function has an odd exponent in x.
The fourth function is just a constant (with exponent 0), so it is an even function.
Artemon [7]3 years ago
5 0
An function is considered to be an even function only if f(-x) = f(x)
1. f(x) = (x-1)^2 = x^2 - 2x + 1
f(-x) = (-x-1)^2 = x^2 + 2x + 1
These two don't match, not an even function

2. f(x) = 8x
f(-x) = -8x
These two don't match, not an even function

3. f(x) = x^2 - x
f(-x) = (-x)^2 - (-x) = x^2 + x
These two don't match, not an even function

4. f(x) = 7
f(-x) = 7
Match, is an even function
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20 times 1/2 I don't know what th8s means can you help
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Multiplying 20×1/2 is the same as dividing 20 by 2. Which means the answer is 10.
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3 years ago
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21 - 3 + 8 or -14 + 31 - 6
sergejj [24]

Answer:21-3+8=26

-14+31-6=11

Step-by-step explanation:

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Which set of ordered pairs contains only points that are on the graph of the function y=12-3×?
irina [24]
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Find the pay earned: 33 hours at $5.15 per hour
Inessa [10]
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A humanities professor assigns letter grades on a test according to the following scheme. A: Top 12% of scores B: Scores below t
RUDIKE [14]

Answer:

The minimum score required for an A grade is 88.

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 = 77.8, \sigma = 8.5

Find the minimum score required for an A grade.

Top 12%, which is at least the 100-12 = 88th percentile, which is the value of X when Z has a pvalue of 0.88. So it is X when Z = 1.175.

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

1.175 = \frac{X - 77.8}{8.5}

X - 77.8 = 1.175*8.5

X = 87.8

Rounding to the nearest whole number

The minimum score required for an A grade is 88.

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2 years ago
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