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sp2606 [1]
2 years ago
13

The lcm of 165xy and 77x 3 y is _____. 1,155x 3y 11xy 12,705x 4y 2 105x 3y

Mathematics
2 answers:
Karo-lina-s [1.5K]2 years ago
7 0

Answer:

1,155x^3y

Step-by-step explanation:

Find LCM of 165xy \ and \ 77x^3y

We write the expression in factors

165xy= 3 \cdot 11 \cdot 5 \cdot x \cdot y

77x^3y= 11 \cdot 7 \cdot x \cdot x \cdot x \cdot y

To find LCM, w multiply  all the common factors first 11xy

Now we multiply all the remaining terms

LCM = 11xy \cdot 3 \cdot 5 \cdot x \cdot x \cdot 7= 1155x^3y

trapecia [35]2 years ago
4 0
The least common multiple (LCM) can be determined by factoring out the terms first,
                             165xy = (3)(11)(5)(x)(y)
                              77x³y = (7)(11)(x)(x)(x)(y)
Copy the factors writing off the repeated factors only once,
                        LCM = (3)(11)(5)(x)(y)(7)(x)(x)= 1155x³y
The answer is 1155x³y (first choice) 
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8 0
2 years ago
Line QR goes through points Q(0,1) and R(2,7). Which equation represents line QR ?
vodomira [7]
(0,1)(2,7)
slope(m) = (7-1) / (2-0) = 6/2 = 3

y = mx + b
slope(m) = 3
use either of ur points...(0,1)....x = 0 and y = 1
now sub and find b, the y int
1 = 3(0) + b
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6 0
2 years ago
5.1(3+2.2x)>-14.25-6(1.7x+4)
bekas [8.4K]

Answer:

(-2.5, ∞)

Step-by-step explanation:

You can add the opposite of the right side.

5.1(3 +2.2x) +14.25 +6(1.7x +4) > 0

15.3 +11.22x +14.25 + 10.2x +24 > 0 . . . eliminate parentheses

21.42x +53.55 > 0 . . . . . . . . . . . . . . . . . . collect terms

x + 2.5 > 0 . . . . . . . . . . . . . . . . . . . . . . . . .divide by the coefficient of x

x > -2.5 . . . . . . add the opposite of the constant

8 0
2 years ago
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Terri wrote the equation using slope-intercept form for the line that passes through the points (4, 6) and (–2, 3).
Zolol [24]

Answer:

The found the slope incorrectly

The found x over y instead of y over x

Step-by-step explanation:

We first need to find the slope

m = (y2-y1)/(x2-x1)

   = (6-3)/(4 --2)

   = 3/6

  =1/2

The found the slope incorrectly

The found x over y instead of y over x

6 0
2 years ago
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Why might algebra tiles not be a good tool to use to factor x2 + 18x + 80? Explain.
Julli [10]
Algebra tiles would not be a good tool to use to factor the trinomial because you would need to drag an x-squared tile, 18 x-tiles, and 80 plus tiles. That is a total of 99 tiles. It would take a lot of time to drag that many tiles on the board and there might not be enough space to hold all of them. You would also need to determine how to arrange all those tiles to make a rectangle. Since 80 is a multiple of 10, you might recognize that 10 and 8 are the factors that add to 18, which would give you the values to use in the X method.
4 0
2 years ago
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