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Vinvika [58]
3 years ago
6

Part A: Factor 3x2y2 − xy2 − 2y2. Show your work. (4 points)

Mathematics
1 answer:
Rudik [331]3 years ago
6 0
A.

3x^2y^2-xy^2-2y^2=y^2(3x^2-x-2)=y^2(3x^2+2x-3x-2)\\\\=y^2[x(3x+2)-1(3x+2)]=y^2(3x+2)(x-1)

B.

x^2+6x+9=x^2+2\cdot x\cdot3+3^2=(x+3)^2=(x+3)(x+3)\\\\\text{Used}\ (a+b)^2=a^2+2ab+b^2

C.

x^2-25=x^2-5^2=(x-5)(x+5)\\\\\text{Used}\ a^2-b^2=(a-b)(a+b)

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Mark walks 1/2 miles in 3/4 of an hour what is the unit rate per hours
lana [24]

Answer:

unit \: rate =  \frac{distance}{time}  \\

substitute:

unit \: rate =  \frac{( \frac{1}{2} )}{ ( \frac{3}{4}) }  \\  \\  =  \frac{1}{2}  \div  \frac{3}{4}  \\  \\  =  \frac{1}{2}  \times  \frac{4}{3}  \\  \\  =  \frac{4}{6}  \\  \\  = { \underline{ \:  \:  \frac{2}{3} \:  \: miles \: per \: hour \:  \:  }}

8 0
2 years ago
How can this model be used to determine 2.4−0.15 ?<br><br> Enter your answers in the boxes.
Harlamova29_29 [7]
2.25! Just do 2.4- 0.15= 2.25, im sorry if its not what you wanted!
8 0
2 years ago
BRAINEST IF YOU GET THSI RIGHT
Scorpion4ik [409]
<h3>Solution :</h3>

\sf \dfrac{6x+4}{3} = \dfrac{5x-5}{8}

By cross multiply, we get

\sf : \implies (6x+4) \times 8 = (5x-5) \times 3

\sf : \implies 48x+32 = 15x-15

\sf : \implies 48x+32 - 15x + 15= 0

\sf : \implies 33x + 47 = 0

\sf : \implies 33x = -47

\sf : \implies x = \dfrac{- 47}{33}

Therefore, answer is \sf x = \dfrac{- 47}{33}

4 0
2 years ago
Read 2 more answers
Please help me with geometry! &lt;3<br> In rhombus ABCD, m&lt;=53*, What is M (*=degrees)
julia-pushkina [17]
In a rhombus opposite angles are equal and all 4 add up to 360
assuming one angle is 53, the opposite angle will also be 53 and then adjacent angles will be (360 - (53 x 2))/2 = 254/2 = 127*(deg)
I think the answer you're looking for is 127
3 0
3 years ago
How many solutions are there to the following system of equations?<br> 10x+5y=5<br> 4x+2y=2
umka21 [38]
Infinite..................
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3 years ago
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