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3 years ago

Simplify -7.39 -(-4.8)- 5.32

Mathematics

2 answers:

PtichkaEL [24]3 years ago

7 0

simplify -7.39 -(-4.8)- 5.32 = -7.91

BabaBlast [244]3 years ago

6 0

The answer is = 7.91

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A bin of 50 manufactured parts contains 3 defective parts and 47 non-defective parts. A sample of size 6 parts is selected from

lyudmila [28]

Answer:

535,095 different samples of size six that contain exactly 2 defective parts.

0.0337 = 3.37% probability that a sample contains exactly 2 defective parts.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

As the order of the parts is not important, the combinations formula is used to solve this question.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

How many different samples are there of size six that contain exactly 2 defective parts?

2 defective from a set of 3, and 4 non-defective from a set of 47. So

$D = C_{3,2}*C_{47,4} = \frac{3!}{2!1!}*\frac{47!}{4!43!} = 535095$

535,095 different samples of size six that contain exactly 2 defective parts.

What is the probability that a sample contains exactly 2 defective parts?

The total number of samples is:

$T = C_{50,6} = \frac{50!}{6!44!} = 15890700$

Then...

$p = \frac{D}{T} = \frac{535095}{15890700} = 0.0337$

0.0337 = 3.37% probability that a sample contains exactly 2 defective parts.

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3 years ago

Please help! Will give Brainliest. (Photo below)

stiv31 [10]

Hi! So I got :
-3 —>20
-2 —>13
-1 —>8
0 —>5
1 —>4
2 —>5
3 —>8
I’m sorry if any of these are wrong but In order to find the answers I used the “graphing quadratics” one (don’t know the name so sorry) but yeah first I found the axis of symmetry which was 1 and from there I built a chart and substituted. Again, I didn’t see some answer choices above in the image so sorry if there wrong, but yeah I hope this helped! (This is from algebra 1 by the way)

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3 years ago

PLS HURRY UP!!!! NEED HELP!!!!

inna [77]

5. Area = 2 unit * 7 units = 14 squared units

6. Area = 3 units * 4 units = 12 square units

7 Area = Area of big rectangle + Area of small rectangle = 42 + 15 = 57 $units^{2}$

8. Area = 1 * 5 + 2*8 = 5 + 16 = 21 square units

Hope that helps!

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2 years ago

Read 2 more answers

19. Express 9/4

DochEvi [55]

9/4

(8+1)/4

8/4 + 1/4

2 + 0,25

2,25

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3 years ago

The height of Amal's bookshelf is 30 centimeters. How

UNO [17]

Answer:

300

Step-by-step explanation:

Since 1 centimeter= 10 millimeters you would multiple 30 by 10 and get 300.

5 0

3 years ago