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3 years ago

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Mathematics

2 answers:

VLD [36.1K]3 years ago

5 0

Answer:

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Step-by-step explanation:

suter [353]3 years ago

3 0

What is that supposed to mean?????? lol

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If Jacob paints 1/5 of a wall in 1/10 of an hour, what is his unit rate?

fomenos

Jacobs unit rate is 1/5 of the wall every 6 minutes which is .033 repeating of the wall every 1 minute

6 0

3 years ago

Read 2 more answers

Given m n, find the value of x and y. (37-18) (8x+12) m (2X+18) n

adelina 88 [10]

Answer:

Step-by-step explanation:

The two inside angles will sum to 180°.

The top to angles are equal.

Think about this as what if both of the parallel lines were intersected by a perpendicuar line. Every angle would be a right triangle 90°. The inside angles will sum to 180° and the opposite angles are again equal.

(2x + 18) + (8x + 12) = 180

10x + 30 = 180

10x = 150

x = 15

-------------------------

(3y - 18) = (8x + 12) x = 15

(3y - 18) = (8(15) + 12)

(3y - 18) = (120 + 12)

(3y - 18) = 132

3y = 132 + 18

3y = 150

y = 50

5 0

3 years ago

Perform the indicated operations on the following complex numbers. Simplify: -6(3 + 5i)

Nat2105 [25]

All you can do is distribute out the -6
To get:
-18+ -30i

4 0

3 years ago

The range of y= sin x is

kolezko [41]

Given:

y = sinx

Required:

To find the range.

Explanation:

The graph of the sine function is as follows:

We can observe from the graph that the values of y lie between -1 to 1.

So the range of the sinx function is [-1, 1].

Final Answer:

The range of sinx function = [-1, 1].

5 0

1 year ago

A bank manager wants to determine the percent of time the bank's tellers are working and idle. He decides to use work sampling,

adelina 88 [10]

Answer:

246

Step-by-step explanation:

In the statment is defined our Values.

First que have a 95% Confidence interval

That is exactly in a Standar normal distribution table equal to Z Score = 1.96

The proportion $\hat{p}$ = 0.20

And we can and Margin Error (ME) equal to 0.05

Using the formula for the Sample Size (N) through Proportion we have,

$N= \frac{Z_{score}^2*\hat{p}*(1-\hat{p})} {ME^2}$

$N= \frac{1.96^2* 0.20 * (1-0.20)}{0.05^2}$

$N= 245.86$ or 246

4 0

3 years ago