How do you solve this

Which is a perfect square?

yaroslaw [1]

The answer is 20 because all 4 sides would equal 5

5 0

2 years ago

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Quick algebra 1 question for 50 points!

saul85 [17]

Answer:

b. -x + y = 0

Step-by-step explanation:

Direct variation:

Direct variation means "y varies directly as x”:

$y \propto x \implies y=kx$

where k is the (non-zero) constant of variation.

To determine which of the given equations represents a direct variation, isolate y for each and compare with the direct variation equation.

Equation a

$y=\dfrac{4}{3}x-2$

This is not a direct variation equation as there is an addition of -2.

Equation b

$-x+y=0$

$\implies y=x$

This is a direct variation equation where the constant of variation is 1.

Equation c

$xy=8$

$\implies y=\dfrac{8}{x}$

This is not a direct variation equation as y is inversely proportional to x.

Equation d

$y=14$

This equation does not include the variable x, and so is therefore not a direct variation equation.

3 0

1 year ago

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Can someone solve with working/solution these 3 questions Plzzz

Arada [10]

Answer:

(c) $x=55$ °

(d) $x=21$ °

(e) $x$ ° $=42$ ° and $y$ ° $=16$ °

Step-by-step explanation:

The triangle is an isosceles triangle with the base angles which are identical. The double stroke on the sides of the triangle indicates which angles are the base angle. The angle corresponding to the side of the triangle with no double stroke is known as the vertex angle.

(c) The given angle is the vertex angle in this question and it is 70°

Since, $x$ ° is one of the base angle, then the other angle which is not drawn is identical to $x$ ° .

Total angle of a triangle is 180°.

$180$ ° $-70$ ° $=2x$ °