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svlad2 [7]
3 years ago
6

100 POINTS please help

Mathematics
2 answers:
Stella [2.4K]3 years ago
8 0
The number is 87 because the numbers are upside down.
andrezito [222]3 years ago
8 0

Answer:

87

Step-by-step explanation:

All the numbers are upside- down. If you look at the image that way, the numbers read: 86,__, 88, 89, 90, 91. 87 seems to be best answer.

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Use the correct order of operations to calculate5 1/2 * 4 1/2 -7/2/ 2 1/3​
IgorC [24]
If there are multiple operations at the same level on the order of operations off from left to right and you work like this first noticed that there are no parentheses or exponents so we moved to multiplication and division with any sense of parentheses
5 0
3 years ago
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Is it possible for two numbers to have a difference of 8 and a sum of 1?
topjm [15]

Answer: yes , it is possible

Step-by-step explanation:

Let the first number be x and the second number be y .Then , the sum of the two numbers will be x + y , and their difference will be x - y.

Combining the two , we have :

x + y = 1 ............................... equation 1

x - y = 8 ................................. equation 2

solving the system of linear equation by substitution method. From equation 1 , make x the subject of the formula ,

x = 1 - y ...................... equation 3

Substitute equation 3 into equation 2 ,

1 - y - y = 8

1 - 2y = 8

add 2y to both sides

1 = 8 + 2y

subtract 8 from both sides

1 - 8 = 2y

- 7 = 2y

divide through by 2

y = \frac{-7}{2}

y = - 3.5

substitute y = -3.5 into equation 3 to find the value of x , we have

x = 1 - y

x = 1 - ( - 3.5 )

x = 1 + 3.5

x = 4.5

Let us check :

x + y will be

4.5 + (-3.5) = 1

Also ,

x - y will be

4.5 - (-3.5)

⇒ 4.5 + 3.5 = 8

7 0
3 years ago
PLEASE HELP I CANNOT FAIL! (the question is the picture below!)
Ronch [10]

Answer:

The answer is A

Step-by-step explanation:

5 0
2 years ago
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Planes Q and R are parallel. Explain how you know lines a and b are skew.
gizmo_the_mogwai [7]

Answer:

We don't know that they skew but if Q and R are the same length then they aren't. But if Q and R are different lengths then they are skew. It would help to post a picture.

Step-by-step explanation:

8 0
3 years ago
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Pls zoom in I need help asap
oksano4ka [1.4K]

Answer:

a

Step-by-step explanation:

8 0
3 years ago
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