A computer randomly selects a number from the given set.

Mathematics

2 answers:

Nady [450]4 years ago

7 0

4/7!!!!!!!!!!!!!!!!!!

jeka944 years ago

6 0

You have a 4 out of 7 chance of getting an even number. There are 4 even numbers in the group, and 7 in total. You cannot simplify this fraction smaller, so the answer stays 4/7

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Hey can you please help me with 8 and 10 :)

insens350 [35]

8) So remember the sum of all angles inside a triangle is equal to 180°. We first want to figure out the angle below the 110°.

A straight line is 180° so if we do 180 - 110 we get 70° therefore the angle below the 110° is 70°.

So we now know two angles in the triangle, 70° and 80°. Add these and we get 150°. Now we can determine the final angle (the one labelled (2x - 6)) which will be 30°.

So let’s make it into an equation:

2x - 6 = 30

Add 6 to both sides to isolate 2x:

2x = 36

Divide by 2 to get the value of x:

x = 18

10) Since the sum of all angles in a triangle is 180, and there are only 3 angles, we can determine A easily.

B = 10°
C = 160°

So to determine A:

180 - 160 - 10

Which gives us 10

Therefore A = 10°.

So the answers:

8) x = 18
9) A = 10°

I hope this helps you!!

4 0

3 years ago

Please help me someone? Will give a thanks and award

Setler [38]

The probabilities of knocking down zero, one, and two pins are $0.175, 0.189,$ and $0.264$ , respectively. The total probability of knocking down at most two is thus $0.175+0.189+0.264=0.628$ , or $62.8%$ .