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kvasek [131]
3 years ago
15

Help me please.............

Mathematics
2 answers:
vova2212 [387]3 years ago
7 0
Answer
y(3y-4)

hope this helps and have a wonderful day :)
Drupady [299]3 years ago
6 0

Answer: Number #2.  I think number 2. y(3y-4)  3y*y= 3y squared and y*-4= -4y.

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lisov135 [29]

Answer:

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Step-by-step explanation:

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3 0
3 years ago
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The quantity a varies directly with b and c and inversely with d. The quantity d is tripled. Which of the following must be true
Vinvika [58]
Lets name the quantity Q
Q=k* \frac{b*c}{d} 

When quantity d is tripled, we get





Q=k \frac{b*c}{3d} 

To be the relationship the same, we see that we need to 
multiply  /numerator  / by  /3 


Q =  k \frac{3bc}{3d} 

So the answer should be 
"The product of c and b must be tripled."

8 0
3 years ago
If a = 5 and b = 2 and c= 3, explain why a + b/c -3 cannot be evaluated
avanturin [10]
A+b is 5+2 which equals 7
c=3 but 7 cannot be divided by 3.
which would be why this cannot be evaluated
3 0
3 years ago
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If using the method of completing the square to solve the quadratic equation x^2-10x-13=0, which number would have to be added t
Maru [420]

Answer: The solution to the problem is based on the solutions

from the subproblems.

x = {8.464101615, 1.535898385}

Step-by-step explanation:  

x^2-10x+13=0

Simplifying

x2 + -10x + 13 = 0

Reorder the terms:

13 + -10x + x2 = 0

Solving

13 + -10x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-13' to each side of the equation.

13 + -10x + -13 + x2 = 0 + -13

Reorder the terms:

13 + -13 + -10x + x2 = 0 + -13

Combine like terms: 13 + -13 = 0

0 + -10x + x2 = 0 + -13

-10x + x2 = 0 + -13

Combine like terms: 0 + -13 = -13

-10x + x2 = -13

The x term is -10x.  Take half its coefficient (-5).

Square it (25) and add it to both sides.

Add '25' to each side of the equation.

-10x + 25 + x2 = -13 + 25

Reorder the terms:

25 + -10x + x2 = -13 + 25

Combine like terms: -13 + 25 = 12

25 + -10x + x2 = 12

Factor a perfect square on the left side:

(x + -5)(x + -5) = 12

Calculate the square root of the right side: 3.464101615

Break this problem into two subproblems by setting  

(x + -5) equal to 3.464101615 and -3.464101615.

6 0
2 years ago
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REY [17]

47

Step-by-step explanation:

it is a vertical angle

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