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Romashka-Z-Leto [24]
3 years ago
7

Is the equation a proportuioanl relationship? x= 2y

Mathematics
1 answer:
prisoha [69]3 years ago
3 0
A proportional change means that for every change in 1 value, it is accompanied by a change in another value that is the same every time. For example, with this, if x=1 then y=2*1=2. If we move x up 1 value to 2, y=2*2=4. Next, if we move x one more value up then 3*2=y=6. As you may notice, y adds up by 2 every time. In addition, you multiply the x value by the same number every time and only that number (no adding anything) and it is therefore a proportional equation
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Please help fast Prefer A Expert or Above to Help Me out it’s the bottom one!
erastova [34]
<h3>Answer: 45</h3>

The value is approximate.

==========================================================

Explanation:

Focus on the upper triangle.

Label the unknown horizontal side as y

Use the pythagorean theorem to solve for y

a^2+b^2 = c^2

10^2 + y^2 = 26^2

100+y^2 = 676

y^2 = 676-100

y^2 = 576

y = sqrt(576)

y = 24

-----------

Now move to the bottom triangle

With respect to the reference angle, the side y = 24 is opposite this. The hypotenuse is unknown.

Use the sine rule to connect the two and solve for x

sin(angle) = opposite/hypotenuse

sin(32) = y/x

sin(32) = 24/x

x*sin(32) = 24

x = 24/sin(32)

x = 45.2899179551967 which is approximate

x = 45 rounding to the nearest whole number

Side x is approximately 45 cm long.

Note: make sure your calculator is in degree mode.

7 0
3 years ago
Josie has a rug with an area of 18 square feet. She will put the rug on the floor that is covered in 1/3 square foot tiles how m
Levart [38]

Answer:

Step-by-step explanation:

This is werid... Don't know how to answer this sorry.

3 0
3 years ago
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ElenaW [278]

Answer:

A'=(5/2,-5/2)

therefore A'(2.5,-2.5)

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Answer:

It multiplies

Step-by-step explanation:

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