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DanielleElmas [232]
2 years ago
5

Question 20:

Mathematics
1 answer:
allochka39001 [22]2 years ago
7 0

Answer:

The answer is C

Step-by-step explanation:

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Escribe 18 en palabras tal y como la escribirías en tu cheque
Semmy [17]

Answer:

Diez y ocho y 00/100.

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If a biking tour group traveled at a constant rate of 34 miles per day for 5 days, how many miles did they cycle?
AveGali [126]

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Step-by-step explanation:

34 miles times 5 days is 170 miles

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The rectangular coordinates of a point are given. Find the polar coordinates ​(r,theta​) of this point with theta expressed in r
alexandr402 [8]

Answer:}

In polar coordinates P is

P  ( 12 ; 2.618 )  

Step-by-step explanation:

The point (ectangular coordinates)  

P ( -6√3  ;   6 )       P  (  x ; y )

Polar coordinates   P ( r  ;  θ )

x = r cos θ

y = r sin θ                  r > 0    and     0  ≤ θ ≤ 2π

Then

r  =  √ (x)² + (y)²        r  =  √(36)²*3 +( 36)²       r = √144

r  =  12   (hypothenuse module always positive)

The point   P  ( -6√3  ;   6 )   is in second cuadrant  between 90° and 180°

angle between  r  and horizontal axis x  is equal to θ

tan α =  l.opp/ l.adj.    tan θ =  y/x       tan θ = - 6 /6√3

tan α = - 1/√3

Then α  =  180⁰ - 150⁰  = 30⁰  or     θ =  150⁰

to express that value in radians we have :

1 π radian      =   180⁰         ⇒   3,1416   radians  =  180⁰

                                                      x ??                  =   150⁰

x =  radians

Finally the point is   P  ( 12 ; 2.618 )  

6 0
2 years ago
Subtract (6a^2+3a) - (4a^2 + 2a)
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2a² + a   (   or a(2a+1)   )

Step-by-step explanation:

(6a²+3a) - (4a² + 2a)  (expand parentheses)

= 6a²+3a - 4a² - 2a   (group like terms)

= 6a²- 4a²+3a- 2a

= 2a² + a

= a(2a+1)

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Does it help to remember and/or list out your square roots
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Yes, because you need to remember and/or list out your square roots no matter what.
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