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2 years ago

Solve: √x+1=√x+6=1

Mathematics

1 answer:

Nonamiya [84]2 years ago

4 0

Squaring both sides of the equation results in the equation,(x+1=x+6-1). Option A is correct.

<h3>What is the equation?</h3>

A mathematical statement consisting of an equal symbol between two algebraic expressions with the same value is known as an equation.

The given equation is;

$\rm \sqrt{x+1} = \rm \sqrt{x+6} = 1$

After squaring we get;

$\rm (\sqrt{x+1})^2 = \rm ( \sqrt{x+6})^2 = 1^2 \\\\ x+1 = x+6=1 \\\\\ x+1=1+6-1$

The equation (x+1=x+6-1) is created by squaring both sides of the equation.

Hence option A is correct.

To learn more, about equations, refer;

brainly.com/question/10413253

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3 years ago

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3 years ago

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Step-by-step explanation:

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Height of square prism, x = 7 units

Height of square pyramid, y = 8 units

Please have a look at the attached image.

Here 2 Surfaces will not be exposed which are base of the square pyramid and the top of the square prism i.e. 2 square surfaces will not be exposed.

Here, surface area of the composite figure will be:

<em>Surface Area of Composite Figure = Lateral surface area of Square Pyramid + Surface Area of 5 surfaces of the square prism</em>

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Let slant height be $l$ units.

Using pythagoras theorem, we can find out the value of $l$ .

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So, total surface area of composite figure:

240 + 480 = 720 sq units.

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