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4 years ago

Solve for x. ANSWERS: A) 12 B) 13 C) 11 D) 10

Mathematics

1 answer:

shepuryov [24]4 years ago

6 0

Answer:

A) 12

Step-by-step explanation:

Since triangles YRZ and QRS are similar by AA, the ratio of their sides should be constant. Since RY=QY, let's call that side length y.

$\dfrac{x+2}{y}=\dfrac{3x-8}{2y}$

Multiply both sides by 2y:

$2(x+2)=3x-8 \\\\2x+4=3x-8 \\\\4=x-8 \\\\x=12$

Hope this helps!

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What are the solutions of the equation? Graph and check the solutions. | x | + 10 = 1

valentina_108 [34]

There is no solution to this equation.

Explanation:
|x| means absolute value of x. Absolute value is the distance a number is from 0 on a number line; since it is distance, it cannot be a negative number.

To solve this equation, |x|+10=1, we would subtract 10 from both sides:

|x|+10-10=1-10; |x|=-9.

This has us looking for a value that would make an absolute value negative; there is no such number.

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Novosadov [1.4K]

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3 years ago

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Serga [27]

Answer:

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Step-by-step explanation:

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3 years ago

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alexgriva [62]

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3 years ago

If the perimeter of vectangle wall is 360 cm and its breath is 60cm. Find its length and also find the totalt cost of painting t

alexdok [17]

Answer:

Rs. 72

Step-by-step explanation:

We have 2 values here,

Perimeter of the rectangle = 360 cm
Breadth of the rectangle (b) = 60 cm.

Firstly, we must find the length of the rectangle (l).

So, according to the formula,

Perimeter = 2 (b + l)

360 = 2 (60 + l)

360 = 120 + 2l

360 - 120 = 2l

240 = 2l

120 cm = l

Now, we need to find the area of the rectangular wall & then convert it from cm² to m² as the cost of painting is given in m².

So,

Area = lb

Area = 120 × 60

Area = 7,200 cm²

Let's convert it to m² now,

7200/1000

= 7.2 m²

Given, cost of painting per m² = Rs. 10

So, the cost of painting the wall is,

10 × 7.2

= Rs. 72

________________________________

Hope it helps!

$\mathfrak{Lucazz}$

3 0

3 years ago