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goldenfox [79]
3 years ago
8

865,321.55-530,125.99

Mathematics
1 answer:
Alex Ar [27]3 years ago
8 0

Answer:

can someone help me with this one

You need a 55% alcohol solution. On hand, you have a 330 mL of a 80% alcohol mixture. How much pure water will you need to add to obtain the desired solution?

Step-by-step explanation:

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A. 86<br> B. 111<br> C. 69<br> D. 71
dangina [55]
All the angles of a triangle add up to 180 degrees. 

30+39+<4= 180

69+<4= 180

Subtract 69 on both sides. 

<4= 111 degrees

<1 and <4 are supplementary and adjacent. They equal 180 degrees as well.

111+<1= 180

<1= 69 degrees

I hope this helps!
<em>~kaikers</em>
8 0
3 years ago
Read 2 more answers
the probability of winning the shell games if you randomly pick is 1 in 3. what would be the appoximate probability of winning 4
Olenka [21]

Answer:

1/81

Step-by-step explanation:

7 0
3 years ago
Find the number of subset and number of proper subset from A=(5,6,7,8)
dezoksy [38]

Step-by-step explanation:

The number of subsets=2ⁿ where n=4 members

2ⁿ=2⁴=16

Number of proper subsets=2ⁿ-1

16-1=15

3 0
3 years ago
PLEASE HELP ME QUICKLY!!! Given that N:{1,2,3,5,8,13} and M:{−9,−8,−6,−4,−2,4}, which statements about N and M are true?
Lelechka [254]

Answer:

The intersection of N and M contains only those elements that are in both N and M.

The intersection of N and M is ϕ.

​N∩M=∅

Step-by-step explanation:

Given

M = { 1, 2, 3, 5, 8, 13}

N = {-9, -8, -6, -4, -2, 4}

Now let us see each statement one by one.

The intersection of N and M contains only those elements that are in both N and M.

The statement is true because by definition intersection of two sets consists of common elements of both sets.

The intersection of N and M is ϕ.

The statement is true. As there is no common element in both sets.

The intersection of N and M is {−9,−8,−6,−4,−2}.

The statement is false because there is not common element in M and N.

N∪M=∅

The statement is false as the union consists of elements of both sets so it can't be empty.

​N∩M=∅

True. Because no common element so intersection will be an empty set..

4 0
3 years ago
At the school pay students can attend for only $7, but for aduts it costs $10
svp [43]

Answer:

question? I don't understand

5 0
3 years ago
Read 2 more answers
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