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Veseljchak [2.6K]
3 years ago
8

I need help with number 42. i am very confused on what to do

Mathematics
1 answer:
Svetach [21]3 years ago
4 0
Find a decimal between 1/2 and find a repeating decimal between 1/3
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What is the value of x in the equation 1/2x-3/4=3/8-5/8x?
Vladimir [108]

Answer:

x = 1

Step-by-step explanation:

1/2x - 3/4 = 3/8 - 5/8x

The LCD is 8. Lets change every fraction to a denominator of 8.

4/8x - 6/8 = 3/8 - 5/8x

Now multiply both sides by 8.

4x - 6 = 3 - 5x

Add 5x to both sides. Add 6 to both sides.

9x = 9

Divide both sides by 9.

x = 1

7 0
3 years ago
Read 2 more answers
Out of 100 students,15 passed in english, 12 passed in mathematics, 8 in science, 6 in english and mathematics, 7 in mathematics
Lyrx [107]
Because there are 4 students who passed in all subjects, we can say that only 2 students passed in English and Mathematics only, only 3 students passed in Mathematics and Science only, and no one passed in English and Science only.

Given that we have deduced the number of students who passed in two subjects, we can now solve for the number of students who passed only one subject. 
                English = 15 - (4 + 2 + 0) = 9
                Mathematics = 12 - (4 + 3 + 2) = 3
                Science = 8 - (4 + 3 + 0) = 1

1. In English but not in Science,
                    9 + 2 = 11
2. In Mathematics and Science but not in English
                    3 + 3 + 1 = 7
3. In Mathematics only 
                             = 3
3. More than one subject only
                   3 + 4 + 2 + 9 = 18

It will really be helpful if you draw yourself a Venn Diagram for this item. 
8 0
3 years ago
Read 2 more answers
Vinay made a password that consists of 3 digits. none of the digits are the same. how many possible passwords did vinay choose f
zhuklara [117]
Assuming the possible digits are from 0-9, there are 10*9*8 possibilities which come out to 720
5 0
3 years ago
Read 2 more answers
Use the FOIL method to find the product. (8a − 8)(4a + 1)
melomori [17]

44a - 1

Im pretty sure


7 0
2 years ago
Twice the product of 3and a number exceeds the sum of the number and 80 by 10.what is the number?
Hatshy [7]
First, create an equation with the criteria given.

If we let x be your number,
2(3x) = 80 + x + 10
(2(3x) is twice the product of 3 and x, and if it exceeds x+80 by 10, then we add 10 to x+80 to make the two sides of the equation equal.)

Now, solve for x.

6x=90+x \\ 5x=90 \\ x=18

6 0
3 years ago
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