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ElenaW [278]
3 years ago
8

select the equation of the line that passes through the point (3, 5) and is perpendicular to the line x = 4. (2 points) y = 5 x

= 5 y = 4 x = 3
Mathematics
1 answer:
Naily [24]3 years ago
8 0
Perpendicular, means that is has to be y=something

look at y value
(3,5)
(x,y)
yvalue is 5
y=5 is answer
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If AB = 9 units, QS = 6 units, and AR = QR = RS, what is the area of the heart shape?
RUDIKE [14]

Answer:

Step-by-step explanation:

AR = QR = RS  = (1/2) QS  = 3

 

So ....by the Pythagorean Theorem, AS = AQ  =

 

√ [3^2  + 3^2]   =  √[9 + 9 ]  = √18  

 

And the area of the two  semi-circles= the area of a circle with a radius of AS/2 =  

pi [AS/2]^2 =

pi [√18/2]^2  =  18pi/4  =  (9/2)pi  units^2

 

And the area of the rest of the figure is just that of a rhombus  =

 

The product of the diagonals / 2   =

 

AB*QS/2  = 9 * 6 / 2  = 27 units^2

 

So....the total area  =

 

[(9/2) pi + 27]   units^2   =  about  =  41.1 units^2  [rounded]

4 0
3 years ago
For the function f(x)=x+9/7-4x find f^-1(x)
Liula [17]

Answer:

Step-by-step explanation:

f(x)=\frac{x+9}{7-4x} \\put ~f(x)=y\\flip~x~and~y\\f(y)=x\\y=f^{-1}(x)\\y=\frac{x+9}{7-4x} \\flip~x~and~y\\x=\frac{y+9}{7-4y} \\x(7-4y)=y+9\\7x-4xy=y+9\\-4xy-y=9-7x\\or\\4xy+y=7x-9\\y(4x+1)=7x-9\\y=\frac{7x-9}{4x+1} \\or~f^{-1}(x)=\frac{7x-9}{4x+1}

3 0
3 years ago
The rule x→y=|x| mark all these points on a coordinate plane
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Answer:

Step-by-step explanation:

On the real x-y plane, y = |x| is represented by two separate straight lines:

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8 0
3 years ago
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How would you solve it. I know the answer already. my problem working it out.<br> 4b/2 + 3 = 11 + b.
kvv77 [185]
-3 to both sides
4b/2 = 8 +b

multiply both sides by two
(4b/2 = 8 + b) X2    =    4b = 16+2b

subtract 2b from both sides
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divide both sides by 2
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3 years ago
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Answer:

no❤

Step-by-step explanation:

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2 years ago
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