$\frac{x+2}{2} = \frac{4}{x}$
times both sides by 2x
x(x+2)=2(4)
x²+2x=8
minus 8 both sides
x²+2x-8=0
factor
what 2 numbers multiply to -8 and add to 2
-2 and 4
(x-2)(x+4)=0

set to zero
x-2=0
x=2

x+4=0
x=-4

x=-4 and 2

8 0

3 years ago

6. Identify the terms in the expression: <br> 9 + 11y – y2 + y3 – 4y4

Goshia [24]

Normally you will see these expressions in reverse order with descending powers of the variable.
-4y^4 + y^3 - y^2 + 11y + 9
So you start with the high order terms and end with a constant.

8 0

3 years ago

Find an equation for a horizontal ellipse with major axis that is 50 units and minor axis that is 20 units.

MaRussiya [10]

Did you get the answer?

5 0

3 years ago

Read 2 more answers

Solve for b.

Over [174]

Answer: A.) b= 2a/h-c

1/2h(b+c)= A

2×1/2h(b+c)=A×2

h(b+c)=2A

h÷h(b+c)=2A÷h

b+c=2A/h

b+c-c=2A/h-c

b=2A/h-c

I hope this is good enough:

5 0

3 years ago