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2 years ago

How do you find the surface area of a cube

Mathematics

1 answer:

masya89 [10]2 years ago

6 0

The surface area of a cube consists of 6 squares each having an area of s^2, where s is a side length so:

A=6s^2

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Solve the following equations;- x - 9 /√x + 3 =1

fgiga [73]

Answer:

13 , 6.

Step-by-step explanation:

A equation is given to us and we need to find out the value of x . The given equation to us is ,

$\sf\implies \dfrac{ x -9}{\sqrt{x+3}}= 1$

Cross multiply ,

$\sf\implies x - 9 =\sqrt{ x +3}$

Squaring both sides ,

$\sf\implies (x - 9)^2 = x + 3$

Simplify the whole square ,

$\sf\implies x^2+9^2-2.9.x = x +3 \\$

$\sf\implies x^2+81 - 18x = x -3$

Add 3 and subtract x on both sides ,

$\sf\implies x^2 -18x-x +81-3=0$

Simplify ,

$\sf\implies x^2 -19x +78=0$

Split the middle term of the quadratic equation,

$\sf\implies x^2-13x-6x+78=0$

Take out common ,

$\sf\implies x( x -13)-6(x-13)=0$

Take out ( x -13 ) as common ,

$\sf\implies ( x -13)(x-6)=0$

Equate both factors to 0 ,

$\sf\implies \boxed{\pink{\sf x = 13,6}}$

Hence the value of x is 13 or 6 .

7 0

2 years ago

I am very behind in edge, is anyone willing to help me?

Vilka [71]

Answer:

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2 years ago

Read 2 more answers

Lesson 6 Practice Problems

inna [77]

Answer:

WHITE PAINT PINK PAINT

(CUPS) (CUPS)

4 3

4/3 1

1 3/4

16/3 4

5 15/4

-Lexi

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2 years ago

Which table represents a linear function?

horsena [70]

Answer:

Step-by-step explanation:

Do you have any answer choices for this or I can’t answer it

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3 years ago

87 is what percent of 66

kozerog [31]

131.818182% and can round to 131.82

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2 years ago