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Natalija [7]
2 years ago
6

Give f(x) = 3x + 3, solve for x when f(x) = 6

Mathematics
2 answers:
Tems11 [23]2 years ago
7 0

Answer:

x = 1

Step-by-step explanation:

f(x) = 3x + 3

f(x) = 6

=> 3x + 3 = 6

=> 3x = 3

=> x = 1

saul85 [17]2 years ago
6 0
F(6)=3(6)+3
f(6)=18+3
f(6)=21
you just have to substitute x with 6!:)
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<u>Diagram 1</u>

Draw a circle with a radius of 8 cm, ensuring you have clearly marked the center point (black circle with center C1)

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The red circle intersects the black circle at two points (D and E).

Connect these 2 points of intersection with a line segment.

<u>Diagram 3</u>

Draw a third circle with center D and radius DE (shown in blue)

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Step-by-step explanation:

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Suppose that Arturo and Bella take an exam for which the mean score is 70 and standard deviation of scores is 8. Arturo’s score
Sever21 [200]

Answer:

Bella's score on the exam is 87.

Step-by-step explanation:

Problems of normally distributed samples can be 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 = 70, \sigma = 8

Arturo's score on the exam is 75

His score is Z standard deviations above the mean

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

Z = \frac{75 - 70}{8}

Z = 0.625

Bella’s score is 1.5 standard deviations above Arturo’s score.

So Bella's z-score is 1.5 + 0.625 = 2.125.

Her score is the value of X when Z = 2.125. So:

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

2.125 = \frac{X - 70}{8}

X - 70 = 8*2.125

X = 87

Bella's score on the exam is 87.

6 0
3 years ago
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