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3 years ago

Find the angle vector of 7j +10 k,i +6j+6k,-4i+9j+6k

Mathematics

1 answer:

aleksandrvk [35]3 years ago

7 0

Answer:

Right angled and isosceles

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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

Money received by an employee after deductions is called

lora16 [44]

Answer:

disposal earnings I think

Step-by-step explanation:

it is the legal deduction of money by the government I think

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3 years ago

Whats 70 + 1 =<br><br> help pls

Komok [63]

70 + 1 = 71

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3 years ago

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Solve 2x-3< 2<br>please answer it fast

murzikaleks [220]

Answer:

x<5/2

Step-by-step explanation:

We have

2x−3<2

Add 3 to both sides.

2x−3 +3 <2 +3

which makes

2x<5

Divide both sides by 2.

2x/2 < 5/2

x<5/2

4 0

3 years ago

91.55

cricket20 [7]

Answer:

the answer is 3x2-10x+6=0

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3 years ago

Find the angle vector of 7j +10 k,i +6j+6k,-4i+9j+6k​

Find the angle vector of 7j +10 k,i +6j+6k,-4i+9j+6k