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dybincka [34]
3 years ago
15

WILL GIVE BRAINLIEST! Determine the coordinates of the point on the straight line y=3x+1 that is equidistant from the origin and

(−3, 4).

Mathematics
2 answers:
babunello [35]3 years ago
7 0

Answer:

(\frac{17}{18}, \frac{23}{6})

Step-by-step explanation:

D1 = \sqrt{(x+3)^2 + (y-4)^2}

D2 = \sqrt{x^2 + y^2}

Then set D1 = D2, and substitute in y = 3x+1

\sqrt{(x+3)^2 + (3x-3)^2} = \sqrt{x^2 + (3x+1)^2}

x^2 +6x +9 +9x^2 - 18x + 9 = x^2 + 9x^2 + 6x + 1

18x = 17

x = 17/18

Then to find y, substitute back in x for y = 3x + 1

y = \frac{17}{18} * 3 + 1

y = 23/6

myrzilka [38]3 years ago
6 0

Answer:

I hope this helps you :)

If this doesn't help I can try and resolve the equation to get your best answer

Step-by-step explanation:

You might be interested in
If EF bisects angle CEB, angle CEF=7x + 21 and angle FEB = 10x - 3, find the measure of DEB.
morpeh [17]

Answer: DEb = 26°

Step-by-step explanation:

<u>Given information</u>

CEF = 7x + 21

FEB = 10x - 3

<u>Given expression deducted from the definition of the bisector</u>

FEB = CEF

<u>Substitute values into the expression</u>

10x - 3 = 7x + 21

<u>Subtract 7x on both sides</u>

10x - 3 - 7x = 7x + 21 - 7x

3x - 3 = 21

<u>Add 3 on both sides</u>

3x - 3 + 3 = 21 + 3

3x = 24

<u>Divide 3 on both sides</u>

3x / 3 = 24 / 3

x = 8

<u>Find the sum of the angle of CEF and FEB</u>

 7x + 21 + 10x - 3

=7 (8) + 21 + 10 (8) - 3

=56 + 21 + 80 - 3

=77 + 80 - 3

=157 - 3

=154

<u>Subtract 154 from the straight angle</u>

DEB = 180 - 154

\boxed{DEB = 26}

Hope this helps!! :)

Please let me know if you have any questions

8 0
3 years ago
If Vector u=(5,-7) and v=(-11,3), 2v-6u=_____ and ||2v-6u||≈_____
Sauron [17]
<h2>Answer:</h2>

2\vec{v}-6\vec{u}=(-52,48) \\ \\ ||2\vec{v}-6\vec{u}||=75.28}

<h2>Step-by-step explanation:</h2>

In this problem we have two vectors:

\vec{u}=(5,-7) \ and \ \vec{v}=(-11,3)

So we need to find two things:

2\vec{v}-6\vec{u}

and:

||2\vec{v}-6\vec{u}||

FIRST:

In this case we have the multiplication of vectors by scalars. A scalar is a simple number, so:

2\vec{v}-6\vec{u} \\ \\ Replace \ \vec{v} \ and \ \vec{u} \ by \ the \ given \ vectors: \\ \\ 2(-11,3)-6(5,-7) \\ \\ Multiply \ each \ component \ by \ the \ corresponding \ scalar:\\ \\ (2\times (-11),2\times 3)+(-6\times 5,-6\times (-7)) \\ \\ (-22,6)+(-30,42) \\ \\ Sum \ of \ vectors: \\ \\ (-22-30,6+42) \\ \\ \therefore \boxed{(-52,48)}

SECOND:

If we name:

\vec{w}=2\vec{v}-6\vec{u}

Then, ||2\vec{v}-6\vec{u}|| is the magnitude of the vector \vec{w}. Therefore:

||\vec{w}||=||2\vec{v}-6\vec{u}|| \\ \\ ||\vec{w}||=||(-52,48)|| \\ \\ ||\vec{w}||=\sqrt{(-58)^2+48^2} \\ \\ ||\vec{w}||=\sqrt{3364+2304} \\ \\ ||\vec{w}||=\sqrt{5668} \\ \\ \boxed{||\vec{w}||=75.28}

5 0
3 years ago
Read 2 more answers
If a 12 ounce bag of popcorn at the theater cost $5.50. How much would a 30 ounce bag cost? $10.00
Kaylis [27]

Answer:

I think it’s C I’m not sure I seen a question like this before

Step-by-step explanation:

4 0
3 years ago
How can you add eight 8's to get the number 1,000? (only use addition)
Fudgin [204]
The answer is 888+88+8+8+8
6 0
3 years ago
Pls answer this i want to know ok ok ok ok ok
bogdanovich [222]

Step-by-step explanation:

given \\ (x +  \frac{1}{x} ) = 7 \\ now \\ (x +  \frac{1}{x} ) ^{2}   \\ (7) ^{2} (given) \\ 49 \\ again \\  {x}^{2}  + ( \frac{1}{x} ) ^{2}  \\ (x  +   \frac{1}{x}) ^{2}  - 2 \times x \times  \frac{1}{x}  \\ (7) ^{2}  - 2 \\ 49 - 2 \\ 47

6 0
3 years ago
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