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algol13
3 years ago
12

−5x+2y=9 y=7x ​ solve the system of equation

Mathematics
1 answer:
egoroff_w [7]3 years ago
6 0
Here to solve the equation we need to plug in the value y as given. -5x+2(7x)=9. -5x+14x=9. 9x=9. X=1.
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NO LINKS!!! This is NOT MULTIPLE CHOICE!!!
aleksley [76]

Answer:

Given equation:   y=(x+1)^2-2

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<u>Translations</u>

For a > 0

f(x+a) \implies f(x) \: \textsf{translated}\:a\:\textsf{units left}

f(x-a) \implies f(x) \: \textsf{translated}\:a\:\textsf{units right}

f(x)+a \implies f(x) \: \textsf{translated}\:a\:\textsf{units up}

f(x)-a \implies f(x) \: \textsf{translated}\:a\:\textsf{units down}

Parent function:  f(x)=x^2  

<u>Translations</u>

Translated 1 unit left:  f(x+1)=(x+1)^2

Then translated 2 units down:  f(x)-2=(x+1)^2-2

Therefore, translate the parent function by <u>1 unit left</u> and <u>2 units down</u> to produce the given equation.

4 0
3 years ago
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Alex73 [517]

Answer:

y = -1/6x - 1/2

Step-by-step explanation:

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7 0
3 years ago
If you horizontally stretch the quadratic parent function, f(x) = x2, by a factor of 5, what is the equation of the new function
Scorpion4ik [409]

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Step-by-step explanation: A P E X

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3 years ago
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rjkz [21]

Answer:

1). 0.625

2). 0.5

3). 0.6

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hope this helped!

6 0
3 years ago
If f = 350i - 250j - 450k6 n and cable ab is 9 m long, determine the x, y, z coordinates of point a
ycow [4]
<span> we know the length of the cable is 9m.
That means the magnitude of  </span><span><span>r<span><span>​<span>AB</span></span><span>​​</span></span></span>=9</span><span>m.
The unit vector, denoted u, is each of </span><span>r<span><span>​<span>AB</span></span><span>​​</span></span></span><span> divided by the magnitude.

</span>u=<span>(<span>​​<span>​x/9</span><span>​​</span></span>i−<span>​y/9<span>​​</span></span>j−<span>​z/9<span>​​</span></span>k<span>)

</span></span><span>We can also figure out the unit vector of F. 
</span>u=​(350i - 250j - 450k)/√(350² +(-250)² +(-450)²)
u=0.562i−0.401j−0.723<span>k
</span>
<span>Force F is directed from point A to B, then both unit vectors must be equal.

Therefore
</span>(​​​x/9​​i−​y/9​​j−​z/9​​k)=0.562i−0.401j−0.723k
<span>We can now solve for each term
x/9=0.562----- > x=5.058 m
-y/9=-0.401--------- > y=3.609 m
-z/9=-0.723------- > z=6.507 m

The answer is
the coordinates of point a
(5.058,3.609,6.507)
</span>
6 0
3 years ago
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