4 years ago

Guys pls help solve for x

1 answer:

madam [21]4 years ago

6 0

Answer:

x=2

Step-by-step explanation:

x+(2x)^2=18

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malfutka [58]

Let u=x^3
the original equation becomes: u^2-9u+8=0
factor this quadratic equation: (u-8)(u-1)=0
u=8, or u=1
that means x^3=8 or x^3=1
x=2 x=1

8 0

3 years ago

scoundrel [369]

Hola , decir al cuadrado es lo mismo que decir elevado a la 2.

5 0

3 years ago

andriy [413]

For Y=2x+10 X=y/2 -5. Second x/3

6 0

3 years ago

Sedbober [7]

Answer:

$28.8

Step-by-step explanation:

20% of 40 is 8 so we are at $32 and 10% of that is 3.2 so she has to pay $28.8

3 0

3 years ago

velikii [3]

Answer:

Step-by-step explanation:

The sides of a 30-60-90 triangle are in the ratio 1:√3:2

The side opposite the 30° angle is (12√6)÷2 = 6/√6.

The side opposite the 60° angle is √3×6/√6 = 6/√2 =3√2.

The sides of a 45-45-90 triangle are in the ratio 1:1:√2

The hypotenuse is 3√2, so the side opposite the 45° angle is 3.

x = 3

3 0

3 years ago