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Lesechka [4]
3 years ago
12

-3•f(-8)+7•g(2)=??????????

Mathematics
2 answers:
AleksandrR [38]3 years ago
7 0

Answer:

The value of given expression is -22.

Step-by-step explanation:

We are given attached graph with the question.

The graph consist of plot for two function y = f(x) and y= g(x).

We need to evaluate the value of expression:

-3\times f(-8) + 7\times g(2)

From the given graph, it is easy to calculate value for f(-8) and g(2).

From graph:

f(-8) = -2

g(2) = -4

These values were obtained by looking the corresponding y-value for given x-values from the graph.

Putting the values in the expression, we get:

(-3)\times (-2) + 7\times (-4) = 6 - 28 = -22

Hence, the value of given expression is -22.

jolli1 [7]3 years ago
5 0

Answer:

-22

Step-by-step explanation:

-3•f(-8)+7•g(2)=

The value of f(x) at x=-8 is

f(-8) = -2

The value of g(x) at x=2 is

g(2) = -4

Substituting these values into the equations

-3 * -2 +7*-4

6 -28

-22

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Answer: feet mainly

Step-by-step explanation:

depends

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6 0
3 years ago
a segment has endpoints at (1, -2) The midpoint is at (-4, -2). What are the cooordinates of the other endpoint?
vfiekz [6]

Answer:

coordinate of the other endpoint is (-9,-2)

Step-by-step explanation:

Given that a segment has endpoints at (1, -2). The midpoint is at (-4, -2).

Now we need to find about what are the coordinates of the other endpoint.

let the coordinates of other end points are (x,y)

Then mid point of (1,-2) and (x,y) is given by mid point formula:

\left(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2}\right)

\left(\frac{x+1}{2},\frac{y-2}{2}\right)=(-4,-2)

\Rightarrow \frac{x+1}{2}=-4, \frac{y-2}{2}=-2

\Rightarrow x+1=-8, y-2=-4

\Rightarrow x=-9, y=-2

hence coordinate of the other endpoint is (-9,-2)

4 0
3 years ago
HELP HELP HELP HELP!! WILL GIVE BRAINLY!! Only answer IF YOURE SURE... WILL REPORT LINKS :)
jeka57 [31]
The answer is D.

Explanation: since the -7 is inside with the x it move the graph 7 units to the right (since it’s a negative sign). If it is outside the x it would move the graph up or down depending on if its a negative or positive number
8 0
3 years ago
A study is conducted to determine how long a person will wait on hold on a telephone call before hanging up. A sample of 1000 pe
klasskru [66]

Answer:

The estimate of a range of plausible values for the true proportion of people that will not wait more than one minute on hold at a 95% confidence level is

Confidence interval = (549.404, 610.596)

Step-by-step explanation:

We will be finding the confidence interval at 95% confidence level.

The proportion of people that hang up the phone in the first minute of waiting

= P = (580/1000) = 0.58

We can then calculate the standard deviation of the distribution of sample means = σₓ = √[np(1-p)]

where n = sample size = 1000

σₓ = √[np(1-p)] = √[1000×0.58×0.42] = 15.61

Confidence interval = (Sample mean) ± (Margin of error)

Sample mean = 580

Margin of Error = (critical value) × (standard deviation of the distribution of sample means)

Critical value = 1.960

Even though we do not have information on the population mean and standard deviation, we can use the z-distribution's z-score for 95% confidence interval instead of the t-distribution's t-score since the sample size is 1000.

Margin of error = 1.960 × 15.61 = 30.596

Confidence interval = (Sample mean) ± (Margin of error)

Confidence interval = 580 ± 30.596

Confidence interval = (549.404, 610.596)

Hope this Helps!!!

4 0
3 years ago
Find Tan A if Cos2A = 1/2
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Answer:

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Step-by-step explanation:

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3 years ago
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