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dangina [55]
3 years ago
13

You have 10 batteries sitting on your desk, three of which are dead. You choose 2 batteries are random for you calculator. What

is the expected number of good batteries that you get?
Mathematics
2 answers:
AnnyKZ [126]3 years ago
6 0
You have 10 batteries 3/10 are dead there are only 7/10 batteries that are good. So the expected number of good batteries you could get is 7.
stepladder [879]3 years ago
6 0

Answer:

1.4

Step-by-step explanation:

on usatestprep

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In the given diagram, what is the measure of ∠ABC of parallelogram ABCD?
nata0808 [166]
<h3>Answer: C) 136 degrees</h3>

The known acute angle of the triangle is 46 degrees, so the unknown acute angle of that triangle is 90-46 = 44 degrees. In other words, the two acute angles of any right triangle must add to 90, so 46+44 = 90.

The 44 degree angle is adjacent to angle ADC, and it adds to angle ADC to form 180 degrees.

If x is the measure of angle ADC, then

44+(angleADC) = 180

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x = 180-44

x = 136

angle ADC = 136 degrees

For any parallelogram, the opposite angles are always congruent. Therefore, angle ABC is equal to angle ADC = 136, making ABC = 136 as well.

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2 years ago
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9. If 3/4 of a ton of sand covers 2/5 of a playground, how many tons of sand are required to cover the entire playground
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6 0
2 years ago
A 4.5 pound of apples costs $22.50. how many pounds for a dollar?
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4 0
3 years ago
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Graph a direct variation function that goes through the point (-2, -6). what is the slope
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Answer:

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Step-by-step explanation:

A direct variation function will always go through the origin point (0, 0).

Therefore, we have the two points (0, 0) and (-2, -6).

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\displaystyle m=\frac{y_2-y_1}{x_2-x_1}

Substitute and evaluate:

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To graph, simply plot (0, 0) and (-2, -6) and draw a line connecting them. This is shown below.

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