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3 years ago

What is the first step in solving the equation 4.2 y minus 5.2 = 18.5?

Mathematics

1 answer:

Amiraneli [1.4K]3 years ago

3 0

The first step is to add 5.2 to both sides.

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loris [4]

3 / 12 = 1/4

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3 years ago

under a dilation, the point (2,6) is moved to (6,18) what is the scale factor of the dilation? enter your answer in the box

Anestetic [448]

Step-by-step explanation:

The equation of line passing through the two points is $\frac{y-y_{1} }{x-x_{1} }=\frac{y_{2} -y_{1}}{x_{2} -x_{1}}$

When substituted,the equation becomes $\frac{y-6}{x-2}=\frac{18-6}{6-2}$

which when simplified is $y=3\times x$

The line clearly passes through origin.

The distance between two points is $\sqrt{(y_{1}-y_{2} )^{2}+(x_{1}- x_{2} )^{2}}$

Distance between origin and $(2,6)$ is $\sqrt{40}$ .

Distance between origin and $(6,18)$ is $\sqrt{360}$

Scale factor is $\frac{distance\text{ }of\text{ }p_{2}\text{ from origin}}{distance \text{ } of \text{ } p_{1}\text{ from origin}}$

So,scale factor is $\frac{\sqrt{360} }{\sqrt{40} }$

which when simplified becomes 3.

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3 years ago

What's is this one please helpp

soldier1979 [14.2K]

It's a scalene triangle since all its sides are different, so are the angles

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3 years ago

Need help with math homework

borishaifa [10]

Answer:

sorry di ko alam

Step-by-step explanation:

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3 years ago

I will give Brainiest if you are right

alexira [117]

Answer:

Step-by-step explanation:

G. Plug in x=5 to x-2<7

which becomes

5-2<7

3<7

which is correct.

Hope This Helps!

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3 years ago

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