MATHEMATICS MIDDLE SCHOOL

Please help i have know idea what to do please help and show work so i can understand thank you!1.) k+3/4k-2 * (12k^2-3)
2.) x^2-16/6x * 7x/x+5
3.) q+5/2 * 4q/q+4
4.)y^2-9/-2y * -5y/y+3
5.)(8x^2-20x+15) divided by (2x-3)
6.)(8x^3-30+21) divided by (4x-6)
7.)(-10m^9-4m-12m^6) divided by 2m^4

Answers

Answer 1
Answer: 1.(k + 3)/(4k - 2)(12k^(2) - 3})
   (k + 3)/(2(2k) - 2(1))(3(4k^(2)) - 3(1))
   (k + 3)/(2(2k - 1))(3(4k^(2) - 1))
   (k + 2)/(2(2k - 1))(3(4k^(2) + 2k - 2k - 1))
   (k + 3)/(2(2k - 1))(3(2k(2k) + 2k(1) - 1(2k) - 1(1))
   (k + 3)/(2(2k - 1))(3(2k + 1) - 1(2k + 1))
   (k + 3)/(2(2k - 1))(3(2k - 1)(2k + 1))
   (3(k + 3)(2k + 1))/(2)

2.((x^(2) - 16)/(6x))((7x)/(x + 5))
   ((x^(2) + 4x - 4x - 16)/(6))((7)/(x + 5))
   ((x(x) + x(4) - 4(x) - 4(4))/(6))((7)/(x + 5))
   ((x(x + 4) - 4(x + 4))/(6))((7)/(x + 5))
   (((x - 4)(x + 4))/(6))((7)/(x + 5))
   (7(x - 4)(x + 4))/(6(x + 5))

3.((q + 5)/(2))((4q)/(q + 4))
   ((q + 5)/(1))((2q)/(q + 4))
   (2q(q + 5))/(q + 4)

4.((y^(2) - 9)/(-2y))((-5y)/(y + 3))
   ((y^(2) + 3y - 3y - 9)/(2))((5)/(y + 3))
   ((y(y) + y(3) - 3(y) - 3(3))/(2))((5)/(y + 3))
   ((y(y + 3) - 3(y + 3))/(2))((5)/(y + 3))
   (((y - 3)(y + 3))/(2))((5)/(y + 3))
   ((y - 3)/(2))((5)/(1))
   (5(y - 3))/(2)

5.(8x^(2) - 20x + 15)/(2x - 3)

6.(8x^(3) - 30 + 21)/(4x - 6)
   (8x^(3) - 9)/(2(2x) - 2(3))
   (8x^(3) - 9)/(2(2x - 3))

7.(-10m^(9) - 12m^(6) - 4m)/(2m^(4))
   (-10m^(9))/(2m^(4)) - (12m^(6))/(2m^(4)) - (4m)/(2m^(4))
   -5m^(5) - 6m^(2) - (2)/(m^(3))

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This is 3 years !!!!!!!!

F(x)=3x+2 and g(x)=-2x-4, find h(x)= f(x)-g(x)

Answers


substitute for your equation;

h(x) = f(x) - g(x)

h(x) = (3x + 2) - (-2x -4)

h(x) = 3x + 2 + 2x + 4 (minus and minus = addition)

h(x) = 3x + 2x + 2 + 4 (combine like terms)

h(x) = 5x + 6

Hope that helps! :D

How do i round 3,176 to the nearest thousand

Answers

Here is the rule: 4 and below let it go (round down), 5 and above give it a shove (round up)
Look to the place after the thousandths in the number 3,176 (the 1)
Since it is below 5, you would round down to 3,000
Well you would look at the 176 in 3,176. Since it is less then half (500) you would round it down. So 3,176 rounded to the nearest thousand would be 3,000

Determine the intercept of the line that passes through the following points

Answers

20-15/1-3= 5/-2

x=-2.5

15= 3(-2.5) + b

15=-7.5 + b

b=22.5

X-Intercept= (-2.5,0)

Y-Intercept= (0, 22.5)

Can y’all please help

Answers

Given:  f(x) = 2x^2 +5sqrt(x-2)

Evaluate this for x=6:

f(6) = 2(6)^2 + 5sqrt(6-2) = 72 + 5(2) = 72 + 10 = 82 (answer)

Round 1.448 to the nearest hundreth of a dollar

Answers

The hundredths is the second digit after the decimal point.
So round the third digit after the decimal point.

1.448 rounds up to 1.45

Hope this helps!
1.450 is the anwser to it
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