MATHEMATICS MIDDLE SCHOOL

Simplify (2x+y^2) (2y-4x-3y^2)

Answers

Answer 1
Answer:

explaining

 

Algebra

 

Simplify (2x^2)(4x^3y^2)

(2x2)(4x3y2)(2x2)(4x3y2)

Multiply x2x2 by x3x3 by adding the exponents.

Tap for more steps...

2x5(4y2)2x5(4y2)

Rewrite using the commutative property of multiplication.

2⋅4(x5y2)2⋅4(x5y2)

Multiply 22 by 44.

8x5y2

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A  square or parallelogram 

An airplane flies 2,951 miles in 6.5 hours. What is the speed of the airplane in miles per hour?

Answers

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Help pleaseWhich equations in point-slope form are equations of the line that passes through the point (−7, 5) and (−4, 1)?

Choose exactly two answers that are correct.

A.y-7= -3/4(x+5)


B.y-5= -4/3(x+7)


C.y+4= -3/4(x+1)


D.y-1= -4/3(x+4)

Answers

General\ equation\ for\ line\ in\ slope\ intercept\ form:\n\ny=ax+b\n\nTo\ find\ a\ and\ b\ substitude\ points\ (-7,5)\ (-4,1)\ into\ equation\n\n \left \{ {{5=-7a+b}\ \ \ \ \atop {1=-4a+b\ |*-1}} \right.\n\n \left \{ {{5=-7a+b}\ \ \ \ \atop {-1=4a-b}} \right.\n\n+----\n\nAddition\ method\n\n4=-3a\ \ |:(-3)\n\na=-(4)/(3)\n\nb=5+7a=5+7*(-(4)/(3))=5-(28)/(3)=-4(1)/(3)\n\Answer\ y=-(4)/(3)x-4(1)/(3)\n\nChecking\ solution:\ny-5=-(4)/(3)(x+7)y-5=-(4)/(3)x-(28)/(3)\n\ny=-(4)/(3)x-(28)/(3)+5\n\ny=-(4)/(3)x-4(1)/(3)\n\nAnswer:B \ and\ D.
an easy way to do it is subtituet (-7,5) and (-4,1) into the equations and find out which ones check. remember (x,y)

so A
if we try (-7,5)
5-7=-3/4(-7+5)
we can immediately see that -2 is not equal to -3/4(-2)
so A is wrong


B
if we try (-7,5)
5-5=-4/3(-7+7)
0=-4/3(0)
0=0
so B is correct

C
if we try (-7,5)
5+4=-3/4(-7+1)
9=-3/4(-6)
9 is not equal to 18/4
so C is wrong

D
if we try (-7,5)
5-1=-4/3(-7+4)
4=-4/3(-3)
4=12/3
4=4
D is correct

If you wanted to try the second point (-4,1) in B and D
B
1-5=-4/3(-4+7)
-4=-4/3(3)
-4=-12/3
4=4
B is still correct

D
1-1=-4/3(-4+4)
0=-4/3(0)
0=0
D is still correct

so the answers are B and D

How could you describe this graph?

Answers

Skewed right, if its data is mostly on the left it’s skewed right, if it’s data is mostly on the right it’s skewed left

Answer: skewed right

Step-by-step explanation:

Finish 7 - 16 all of it

Answers

7-13.) 7,253,184.
14.) place value.
15.) digits.
16.) C, thousands.
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On May 9, 2014 Jason made a deposit of $650.00. What is his balance after this transaction? A) $540.28
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C) $1190.28
D) $1548.11

Answers

C is the correct answer

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