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MArishka [77]
3 years ago
5

The blue dot is at what value on the number line?10 +2.

Mathematics
1 answer:
NikAS [45]3 years ago
6 0

Answer:

-10

Step-by-step explanation:

We can figure out that the number line is by four.

How?

There is one line between 10 and 2. Sooo:

10 - 2 = 8

8 / 2 = 4

If we check it (10 - 4 - 4 = 2) it checks out!

Using this information we can figure out what the blue dot is.

2 (given) - 4 (incriments of number line) - 4 - 4 = - 10

There is our answer, -10!

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Solve this logic number sequence puzzle by the correct digit
otez555 [7]
8080=6 because there are 6 "0s" or circle shaped objects that make up the number. For example, 8=2 (there are two circles.)


<u>Using the same logic,</u>
1357=0 because there are no circles.
2022=1; there is 1 circle.
1999=3; three circles.
6666=4; there are four circles.
3 0
4 years ago
Solve this system of linear equations. Separate the x and the y values with a comma.
ohaa [14]
4x = -60 - 19y
-7x = -48 - 19y

Subtract the bottom equation from the top:
4x + 7x = -60 + 48 - 19y + 19y

Simplify:

11x = -12 -0y
11x = -12

Divide both sides by 11:
11x/11 = -12/11

Simplify:
x = -12/11
Then plug in x to solve for y: 4(-12/11) = -60 - 19y

Simplify: -48/11 = -60 - 19y

Add 60 to both sides (keep in mind 60 = 660/11):

-48/11 + 660/11 = -60 + 60 - 19y

Simplify:
612/11 = 0 - 19y
612/11 = -19y

Divide both sides by -19 (keep in mind that dividing by -19 is the same as multiplying by -1/19):
612/11 • -1/19 = -19y/-19

Simplify:
-612/209 = y
y = -612/209

So, the answer is: (-12/11, -612/209)
4 0
3 years ago
Find the slope of the line
vovangra [49]

Answer:

the slope is -1, rise over run and since the line goes down from left to right it is negative

7 0
3 years ago
Read 2 more answers
10,14,16,18,20 plz I don't understand
joja [24]
10. b - 16.6 = -3.7.....add 16.6 to both sides
      b - 16.6 + 16.6 = -3.7 + 16.6
      b = -3.7 + 16.6
      b = 12.9

14. 18.91 = -7.9 + x.....add 7.9 to both sides
      18.91 + 7.9 = -7.9 + 7.9 + x
      26.81 = x

16. 295.8997 = -10.1k....divide both sides by -10.1
      295.8997 / -10.1 = (-10.1/-10.1)k
     - 29.297 = k

18. -94.4724 = 3.3x....divide both sides by 3.3
      - 94.4724 / 3.3 = (3.3 / 3.3)x
      - 28.628 = x

20. -29.4x = -148.764...divide both sides by -29.4
      (-29.4 / -29.4)x = - 148.764 / -29.4
      x = 5.06

7 0
3 years ago
10. A random sample of 10 fibers is taken from a collection of 92 fibers that consists of 43 fibers of polymer A, 17 fibers of p
vazorg [7]

Answer:

0.1150 = 11.50% probability that the sample does not contain any fibers of polymer B

Step-by-step explanation:

Hypergeometric distribution:

The probability of x sucesses is given by the following formula:

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}

In which:

x is the number of sucesses.

N is the size of the population.

n is the size of the sample.

k is the total number of desired outcomes.

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)!}

In this question:

Fibers are chosen without replacement, which means that we use the hypergeometric distribution.

92 fibers means that N = 92

Sample of 10 means that n = 10

No polymeter B which means that x = 0

17 fibers of polymeter B which means that k = 17

a. What is the probability that the sample does not contain any fibers of polymer B

This is P(X = 0).

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}

P(X = 0) = h(0,92,10,17) = \frac{C_{17,0}*C_{75,10}}{C_{92,10}} = 0.1150

0.1150 = 11.50% probability that the sample does not contain any fibers of polymer B

4 0
3 years ago
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