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sammy [17]
2 years ago
8

The scale on a map says that 3 cm represents 12 km what is the actual number of km represented by 5 cm on the map

Mathematics
1 answer:
irga5000 [103]2 years ago
6 0

2.4 please follow mee i think this is answer

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R = sec(θ) − 2cos(θ), where -π/2 < θ < π/2
Alex

Answer:

  y = (x/(1-x))√(1-x²)

Step-by-step explanation:

The equation can be translated to rectangular coordinates by using the relationships between polar and rectangular coordinates:

  x = r·cos(θ)

  y = r·sin(θ)

  x² +y² = r²

__

  r = sec(θ) -2cos(θ)

  r·cos(θ) = 1 -2cos(θ)² . . . . . . . . multiply by cos(θ)

  r²·r·cos(θ) = r² -2r²·cos(θ)² . . . multiply by r²

  (x² +y²)x = x² +y² -2x² . . . . . . . substitute rectangular relations

  x²(x +1) = y²(1 -x) . . . . . . . . . . . subtract xy²-x², factor

  y² = x²(1 +x)/(1 -x) = x²(1 -x²)/(1 -x)² . . . . multiply by (1-x)/(1-x)

  \boxed{y=\dfrac{x\sqrt{1-x^2}}{1-x}}

__

The attached graph shows the equivalence of the polar and rectangular forms.

4 0
2 years ago
12/9=20/y<br><br> solve for Y<br> what is Y?
Romashka [77]
2021 is the answer ........
6 0
3 years ago
Read 2 more answers
Can someone take the time to answer this for me? I try to turn the feet into inches and then all the inches into feet but it doe
Mumz [18]
To find the equation, we first need to change the unit as you did correctly:

1 feet = 12 inches

In this case,let's turn the unit of depth to feet:

4÷12
= 1/3 feet

Then we can find the volume in inches:

1/3×162×6
=54×6
=324 ft^3

Therefore the answer is B.324 ft^3 .

Hope it helps!
6 0
3 years ago
Read 2 more answers
How can you identify a linear nonproportional relationship from a table, a graph, and an equation?
Olegator [25]

Answer:21

Step-by-step explanation:

8 0
2 years ago
the height of a ball thrown directly up with a velocity of 40 feet per second from a initial height of 5 ft is given by the equa
vovikov84 [41]
The equation is h=-16t²+40t+5.The ball will hit the ground when h=0. So:
0=-16t²+40t+5
16t²-40t-5=0
Using the quadratic formula, we get a positive value for t of <span>2.61930639376 seconds.
☺☺☺☺
</span>
8 0
3 years ago
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