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Murrr4er [49]
3 years ago
7

If f (x ) = 3x , what is f (-2) and f (2)?

Mathematics
2 answers:
bogdanovich [222]3 years ago
8 0

Answer:

B. -6 and 6.

Step-by-step explanation:

It's shown that -2 and 2 are the inputs on this particular equation. That means they are the x values they want you to find the corresponding y value for. So, you can solve these by just plugging in the numbers. So, replace x in the original equation with -2 and 2 and then evaluate. f(x)=3 *-2=-6 and f(x) = 3*2=6. Good luck!

xz_007 [3.2K]3 years ago
6 0

Answer:

b. -6 and 6

Step-by-step explanation:

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Sue scored a total of 35 points in two games. She scored 6 times as many points in the second game as in the first. How many mor
Nata [24]

x = points in first game

y = points in second game

6x=y   to make them equal multiply the first games points by 6

x+y=35    the points in both games

x +6x = 35   substitute for y  (y=6x)

7x=35   combine like terms

x=5

y=6x

y=6(5)

y=30 points

7 0
3 years ago
40 points!!! please tell me how to do it not what the answer is :D
Julli [10]

Answer:

C

Step-by-step explanation:

You first distribute within the parentheses which is -(-z-2). This is going to make everything positive as everything in the parentheses is negative. You should get z+2. Next, you plug that back in. It should be-3z+z+2. You simplify to get -2z+2. Hope this helps!

5 0
2 years ago
Read 2 more answers
Greatest common factor 10b^2 and 4a^3
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5 0
3 years ago
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Please help me ... Tim has developed a money saving strategy that use the formula S=450+100r give a possible interpretation of T
qwelly [4]
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7 0
3 years ago
A worn, poorly set-up machine is observed to produce components whose length X follows a normal distribution with mean 14 centim
Akimi4 [234]

Answer:

74.86% probability that a component is at least 12 centimeters long.

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 = 14

Variance is 9.

The standard deviation is the square root of the variance.

So

\sigma = \sqrt{9} = 3

Calculate the probability that a component is at least 12 centimeters long.

This is 1 subtracted by the pvalue of Z when X = 12. So

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

Z = \frac{12 - 14}{3}

Z = -0.67

Z = -0.67 has a pvalue of 0.2514.

1-0.2514 = 0.7486

74.86% probability that a component is at least 12 centimeters long.

6 0
3 years ago
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