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elena55 [62]
3 years ago
13

Billy had some $2 and $10 notes. The total value of the notes was $864. She exchanged 5 $10 notes into $2 notes. The number of $

2 notes and $10 notes were equal in the end. How many $2 notes did he have at first?
Mathematics
1 answer:
Sergio039 [100]3 years ago
6 0

Answer:

7

Step-by-step explanation:

because 10 x 5 +50 and when u subtract that from 864 there 814 left and 800 can be divided by 10. Therefore 14/ 2 =7 idk if this is right tho

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0+4=?<br> Help will be needed here
Romashka [77]

Answer:

40

you add a 0 to the four and boom

If you are really asking, then the answer is still 4

8 0
3 years ago
Read 2 more answers
A batch of 40 semiconductor chips is inspected by choosing a sample of 5 chips. Assume 10 of the chips do not conform to custome
butalik [34]

Answer:

a) 658008 samples

b) 274050 samples

c) 515502 samples

Step-by-step explanation:

a) How many ways sample of 5 each can be selected from 40 is just a combination problem since the order of selection isn't important.

So, the number of samples = ⁴⁰C₅ = 658008 samples

b) How many samples of 5 contain exactly one nonconforming chip?

There are 10 nonconforming chips in the batch, and 1 nonconforming chip for the sample of 5 be picked from ten in the following number of ways

¹⁰C₁ = 10 ways

then the remaining 4 conforming chips in a sample of 5 can be picked from the remaining 30 total conforming chips in the following number of ways

³⁰C₄ = 27405 ways

So, total number of samples containing exactly 1 nonconforming chip in a sample of 5 = 10 × 27405 = 274050 samples

c) How many samples of 5 contain at least one nonconforming chip?

The number of samples of 5 that contain at least one nonconforming chip = (Total number of samples) - (Number of samples with no nonconforming chip in them)

Number of samples with no nonconforming chip in them = ³⁰C₅ = 142506 samples

Total number of samples = 658008

The number of samples of 5 that contain at least one nonconforming chip = 658008 - 142506 = 515502 samples

6 0
3 years ago
What is the distance between point A and point B?
Tpy6a [65]

Answer:

\sqrt{45}

Step-by-step explanation:

(5,9) and (2,3)

then by distance formula

d =  \sqrt{{(x1 - x2)}^{2} +  {(y1 - y2)}^{2} }

d²=3²+6²

d²=9+36

d²=45

d =  \sqrt{45 }

8 0
3 years ago
Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the corre
Margaret [11]
In getting the area of and equilateral triangle, you must first consider that all of its sides are congruent and that is 3 inches, so the formula in getting the area is height form its base so in getting its height you must use the pythagorean theorem by dividing the triangle so the hypotenuse of it is 3 and the base of 1.5inches, so the height is 4.77 inches then the area is 7.15 sqr.inch
4 0
3 years ago
Bottom#4<br> Which value represents the median from the box and whisker plot attached?
Andreyy89

Answer:

Step-by-step explanation:

the median is the line inside the box which is 84

8 0
4 years ago
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