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lbvjy [14]
3 years ago
11

A random sample of 50 was taken from a shipment of 12,000 light bulbs. There were 2 broken bulbs in the sample. How many broken

bulbs would you expect in the entire shipment?
Mathematics
1 answer:
lukranit [14]3 years ago
7 0

Answer:

You can Expect 480 broken bulbs.

Step-by-step explanation:

The first step is to convert the random sample of broken bulbs to a fraction. The fraction 2/50=0.04

Then, you take 0.04 and multiply it by 12,000. This gets you 480 broken bulbs <u>estimated</u>.

\frac{2}{50} =0.04

0.04 * 12,000=480

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y = 55x + 10
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3 years ago
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Help, please the question and thank you
julsineya [31]

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The Correct choice is ~ A

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Because the two lines are parallel, the given angles forms Corresponding angle pair. and therefore they have equal measures.

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2 years ago
Ryan shaded 70 squares on his hundredths grid. Sarah shaded 80 squares on her hundredths grid.
Nuetrik [128]

Answer:

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Step-by-step explanation:

3 0
4 years ago
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The length of the hypotenuse of a right angled triangle exceeds the length of the base by 2cm and exceeds twice the length of th
insens350 [35]

Answer: a = 8;  b = 15;  c = 17

Step-by-step explanation:

c = b + 2  and c = 2a + 1

b = c − 2 and a =  \frac{c-1}{2}

​

c² = b² + a²  

c^{2} = (c-2)^{2} + \frac{c-1}{2}\\

c^{2}= \frac{4 (c-2)^{2}+(c - 1)^{2}  }{4}

4c^{2}={4 (c^{2} + 4 -4c)+c ^{2}  + 1-2c

4c^{2}={4 c^{2} + 16 -16c)+c ^{2}  + 1-2c

c^{2}-18c+17=0

c(c -17)-1(c-17)=0

​(c -1)(c-17)=0

c = 1 or c = 17

If c = 1 then b = 1 - 2 = -1, that's not possible

So x = 17

b = 17 - 2 = 15

a = \frac{17-1}{2}  = 8

Length sides of the triangle are 17 cm, 15 cm and 8 cm.

I saw some of this on a site but I want to make sure its correct so we're gonna apply the pythagorean theory and see if its correct.

a^{2} + b^{2} = c^{2} \\8^{2} + 15^{2} = 17^{2} \\64 + 225 = 289\\289 = 289\\

This shows that this is correct.

Hope this helped! Again, some of this was from a site, not from me.

3 0
3 years ago
Olly drove 56 km from Liverpool to Manchester.
yawa3891 [41]

Answer:

57.073 km/h approx.

Step-by-step explanation:

Total distance from Liverpool to Sheffield

= 56 + 61 km

= 117 km

Time from Liverpool to Manchester

=56 km ÷ 70 km/h

=0.8 hours

Time from Manchester to Sheffield

=75 mins

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Total time = 0.8 h + 1.25 h

= 2.05 hours

Average speed from Liverpool to Sheffield

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= 57.073 km /h

Please mark as brainliest

8 0
3 years ago
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