3 years ago

What is the positive solution to this equation 4x^2+12x=135

Mathematics

1 answer:

Stels [109]3 years ago

5 0

Answer:

answer for the equation is 6.75

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21×9=9×21 what property is used

kvv77 [185]

Hello There =)

Commutative property is used. The commutative property <span>states that two numbers can be multiplied in either order.</span>

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2 years ago

If f(x)=3x+2,find f(f^-1(14)).

lisov135 [29]

Answer: 14

<u>Step-by-step explanation:</u>

f(x) = 3x + 2

To find f⁻¹, swap the x's and y's and solve for y --> Note: f(x) is y

x = 3y + 2

x - 2 = 3y

$\dfrac{x-2}{3}=y$

$\implies f^{-1}(x)=\dfrac{x-2}{3}$

$\implies f^{-1}(14)=\dfrac{14-2}{3}$

$\implies f^{-1}(14)=\dfrac{12}{3}$

$\implies f^{-1}(14)=4$

f(f⁻¹(14)) = f(4)

f(4) = 3(4) + 2

= 12 + 2

= 14

NOTE: the simplified version is .... f and f⁻¹ cancel out, leaving you with 14

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3 years ago

louisa cuts 7 pieces of yarn. each piece is 28 hundredths meters long. what is the total length of yarn louisa cuts?

Serhud [2]

Answer:

216

Step-by-step explanation:

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2 years ago

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There are four identical quadrants which is 15in.

babunello [35]

I think the answer is 225

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2 years ago

Slope and y-intercept form from a table

dsp73

Answer:

The y-intercept is 3

Gradient: 4

11-3= 8

2-0= 2

8/2= 4

Hope this helped!

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2 years ago