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Komok [63]
3 years ago
9

Help I’m being timed!!

Mathematics
2 answers:
sergiy2304 [10]3 years ago
7 0

Answer:

true I think. I rember some, sorry if its wrong

jok3333 [9.3K]3 years ago
6 0
Trueeeeeeeeeeeeeeeeeeee
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This is a flat surface extending in all directions.
kherson [118]
I believe this would be a plane
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Find the value of x?
Marrrta [24]

Step-by-step explanation:

 180-89=91(angles on a straight lline)

 5x-24=91(Corresponding angles)

 5x      =91+24

     5x =115

  <em>    x  =23 degrees</em>

94+13x-5=180(allied angles)

94+13x-5 =180-94+5

13x           =91

<em>               x=7</em>

7(x-7)=7x-49

7x-49=126(corresponding angles)

7x      =126+49

     7x=175

<em>        x=25</em>

<em>Hope you got it </em>

<em>If you have any question just ask me</em>

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5 0
2 years ago
A manufacturing process produces semiconductor chips with a known failure rate of . If a random sample of chips is selected, app
AleksandrR [38]

Answer:

The probability that at least 14 of the chips will be defective is 0.6664.

Step-by-step explanation:

The complete question is:

A manufacturing process produces semiconductor chips with a known failure rate of 5.4%. If a random sample of 300 chips is selected, approximate the probability that at least 14 will be defective. Use the normal approximation to the binomial with a correction for continuity .

Solution:

Let <em>X</em> = number of defective chips.

The probability that a chip is defective is, <em>p</em> = 0.054.

A random sample of <em>n</em> = 300 chips is selected.

A chip is defective or not is independent of the other chips.

The random variable <em>X</em> follows a Binomial distribution with parameters <em>n</em> = 300 and <em>p</em> = 0.054.

But the sample selected is too large.

So a Normal approximation to binomial can be applied to approximate the distribution of X if the following conditions are satisfied:

  1. np ≥ 10
  2. n(1 - p) ≥ 10

Check the conditions as follows:

 np=300\times 0.054=16.2>10\\n(1-p)=300\times (1-0.054)=283.8>10

Thus, a Normal approximation to binomial can be applied.

So,  X\sim N(\mu =16.2,\ \sigma^{2}=15.3252).

Compute the probability that at least 14 of the 300 chips will be defective as follows:

Use continuity correction:

P (X ≥ 14) = P (X > 14 + 0.50)

               = P (X > 14.50)

               =P(\frac{X-\mu}{\sigma}>\frac{14.50-16.20}{\sqrt{15.3252}})

                =P(Z>-0.43)\\=P(Z

*Use a <em>z</em>-table for the probability.

Thus, the probability that at least 14 of the chips will be defective is 0.6664.

5 0
2 years ago
while exercising cody traveled 4 2/7 kilometers. if he walked 2 3/9 kilometers and jogged the rest, how many kilometers did he j
irina [24]

Answer:

41/21km or 1 20/21km

Step-by-step explanation:

1) simplify fractions: 4 2/7 = 30/7 and 2 3/9 = 7/3

2) find common denominator: 90/21 - 49/21

3) subtract: 41/21

4) simplify: 41/21 or 1 20/21

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Prove LMNO is a parallelogram
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LMNO is a parallelogram because it has all 4 sides parallel to each other.
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2 years ago
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