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3 years ago

The graph of the function f(x) is shown Which graph represents the function 4(2x)?

Mathematics

1 answer:

Anna [14]3 years ago

6 0

Answer:

$8x$

Step-by-step explanation:

$4 \: time \: 2x = 8x$

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Use the circuits shown to solve each of the following:

Harlamova29_29 [7]

Answer:

1. R = 8 ohms 2. V = 32 volts

Step-by-step explanation:

Voltage, V = 16 V

Current, I = 2 A

We need to find the resistance of the circuit. Using Ohm's law,

V = IR

So,

$R=\dfrac{V}{I}\\\\R=\dfrac{16}{2}\\\\R=8\ \Omega$

2. Current, I = 8 A

Resistance, R = 4 ohms

We need to find the voltage of the circuit. Using Ohm's law again,

V = 8 × 4

V = 32 volts

Hence, this is the required solution.

6 0

3 years ago

What is the measure of AB in O below?

8_murik_8 [283]

Answer:

The measure of an arc is equal to the angle opposite it

Therefore the answer is C. 100°

Hope this helps!

8 0

4 years ago

Examine the diagram of circle V, where two chords, JK and LM, are equidistant from the center. If JK=4x+37, and LM=5(x+5), what

77julia77 [94]

Answer:

x=12

Step-by-step explanation:

we know that

If the two chords are equidistant from the center of the circle, then the chords must be congruent.

JK=LM

substitute the given values

$4x+37=5(x+5)$

solve for x

$5x-4x=37-25\\x=12$

6 0

3 years ago

a teacher has given a test to a group of students. the set of scores is: 78, 79, 79, 81, and 83. find the variance for this samp

Delvig [45]

Based on the data set, the variance for this sample of tests is 4

<h3>How to find the variance for this sample of tests?</h3>

The sample of test is given as:

78, 79, 79, 81, and 83.

Calculate the mean, using:

Mean = Sum/Count

So, we have

Mean = (78 + 79 + 79 + 81 + 83)/5

Evaluate

Mean = 80

The variance is calculated as

$\sigma^2 = \frac{\sum(x - \bar x)^2}{n-1}$

This gives

$\sigma^2$ = [(78 - 80)^2 + (79 - 80)^2 + (79- 80)^2 + (81- 80)^2 + (83- 80)^2)]/[5 - 1]

Evaluate the numerator and the denominator.

So, we have:

$\sigma^2$ =16/4

Evaluate the quotient

$\sigma^2$ = 4

Hence, the variance for this sample of tests is 4