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tester [92]
3 years ago
9

the davis' backyard measures 40 ft x90 ft. find the area of their backyardand show how the area could be written using exponents

.
Mathematics
1 answer:
drek231 [11]3 years ago
8 0
2,100 is the real number. 1,050² is exponent form.
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Round this number to the nearest million<br><br> 135,458,267
Svet_ta [14]
1,000,000 is million
to round look at hundred thousand place or 100,000
see number before million (after comma)

if it is greater than or equal to 5, add 1 to current value of million and say all after is 0
if less than 5 then leave million value as is and make after 0


135,458,267
hundred thousand value is 4
4<5
135,000,000
4 0
3 years ago
Find the perimeter of the following polygon. Be sure to include the correct unit in your answer.
tino4ka555 [31]
The answer is 69.70in
7 0
3 years ago
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
3 years ago
3 a plus b equals 54, when b equals 9?
Anton [14]

Answer:

3a+b= 54

3a+9=54

3a=54-9

3a=45

a=45/3

a= 15

8 0
3 years ago
Read 2 more answers
Can someone plz help me I well thank you so much!!!
ollegr [7]
The answer will be 10
6 0
3 years ago
Read 2 more answers
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