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zysi [14]
3 years ago
7

Solve : 20-9x=11 4(2x+1)=8 5(2x+5)=-15 3(8x+1)=-21

Mathematics
1 answer:
laila [671]3 years ago
4 0
<span>20-9x=11
-9x=11-20
-9x= -9
x= -9/(-9)
x=1


4(2x+1)=8
2x+1=8/4
2x+1=2
2x=2-1
2x=1
x=1/2
x=0.5


5(2x+5)=-15
2x+5= -15/5
2x+5= -3
2x= -3-5
2x= -8
x= -8/2
x=-4

3(8x+1)=-21
8x+1= -21/3
8x+1= -7
8x= -7-1
8x =-8
x= -8/8
x= -1
</span>
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If I have 48 cards and and gave 10 to my friend and I have 38 left what what fractionbb be is my original number of cards
topjm [15]

Question isn't well formatted :

If I have 48 cards and and gave 10 to my friend and I have 38 left. what fraction of original number of card do I have left.

Answer:

0.7917

Step-by-step explanation:

If I have 48 cards and and gave 10 to my friend and I have 38 left what what fractionbb be is my original number of cards

Given that :

Total number of cards = 48

Number given to friend = 10

Number of cards left = 48 - 10 = 38

Number of cards left / original number of cards

38 / 48

= 0.7917

8 0
3 years ago
One spool contains ​ 4 2/3 ​ yards of twine. A second spool contains 11 feet of twine.
frez [133]

Answer: The correct answer is option (C); 25 feet

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3 feet = 1 yard.

In other words, in every yard you will find times 3 feet. So in a spool of twine that contains four and two-thirds (4 2/3) yards of twine, conversion to feet would be given as;

X feet = (4 2/3) x 3

X feet = (14/3) x 3

X feet = 14

For the second spool the measurement is 11 feet of twine, so the total measurement would be derived as,

Spool 1 + Spool 2 = Total

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8 0
4 years ago
20 POINTS!! What would be the first step to solve this equation?
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Answer:

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Step-by-step explanation:

Note the equal sign, what you do to one side, you do to the other. Isolate the variable, m. Add 13 to both sides of the equation:

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7 0
2 years ago
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Savatey [412]

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3 years ago
katie has red 32% of a book if she has to read 80 pages how many more pages does Katie have left to read
galben [10]
In this question, the information that Katie has already read 32% of a book that has a total of 80 pages is of great importance. This information is enough to find the required answer to the question.
Total number of pages Katie has to read = 80
Percentage of pages that Cathie read = 32%
Number of pages that Katie read = (32/100) * 80
                                                     = 256/10
                                                     = 25.6 pages
Then
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So Katie has 54.4 pages left to read.
                                                    
5 0
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