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Drupady [299]
2 years ago
12

The property of 12x2-7=6-2x2+2

Mathematics
1 answer:
gayaneshka [121]2 years ago
6 0
12x2-7=6-2x2+2
14x^2-15=0
a=14 , b =0 , c=-15
0^2-4x14x(-15) =
840
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5+14a=9a - 5 <br><br><br> Please help
posledela

Answer:

a=2

Step-by-step explanation:

5+14a=9a-5 subtract 9a from both sides

5+5a=-5 subtract 5 from both sides

5a=-10 divide by 5 on both sides

a=-2

hope you do well :)

8 0
2 years ago
ABCD is a rectangle. What is the value of x? rectangle with length 63 m, width x m, and diagonal 65 m 2 meters 16 meters 63 mete
lesya [120]
The correct answer is 16 meters

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4 0
3 years ago
Read 2 more answers
If y=−3 , then 4+y4y=
Ne4ueva [31]

Answer:

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3 0
3 years ago
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Which is bigger 13% or 3/25?
belka [17]
Change 13% as a fraction. It will be 13/100

Now, which is bigger? 13/100 or 3/25
 Cross multiply and 13/100 is bigger.
 
13           3
___   X    ____
100          25    


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The answer is 13/100
6 0
3 years ago
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! URGENT !<br> -1 3/5 ÷ (-2/3) = ?
svetoff [14.1K]

Convert 1 3/5 to an improper fraction;

-1 × 5 + 3/5 ÷ -2/3

Simplify 1 × 5 to 5

-5 + 3/5 ÷ -2/3

Simplify 5 + 3 to 8

-8/5 ÷ -2/3

Use this rule: a ÷ b/c = a × c/b

-8/5 × 3/-2

Use this rule; a/b × c/d = ac/bd

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Simplify 8 × 3 to 24

-24/5 × -2

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Move the negative sing to the left

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Simplify 24/10 to 12/5

-(-12/5)

Simplify brackets

12/5

Convert to a mixed fraction

<u>= 2 2/5</u>

8 0
2 years ago
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