Estimate a 20% tip on a dinner bill of $142.74 by first rounding the bill amount to the nearest ten dollars.
Estimated tip:
X
6
?

Answer:

Step-by-step explanation:

The area of ​​a rectangle is 600 cm2. Calculate the dimensions of the rectangle knowing that its perimeter is 100 meters.

The formula for the area of a triangle =

Length × Width = 600 cm²

LW = 600

W = 600/L

Perimeter of a rectangle = 2L + 2W = 100m

2L + 2W = 100

we substitute

2L + 2(600/L ) = 100

2L + 1200/L = 100

Multiple all through by L

2L² + 1200 = 100L

2L² - 100L + 1200 = 0

We factorise

2L² - 60L - 40L + 1200= 0

Las dimensiones del rectángulo serían:

Longitud = 30m

Ancho = 20m

Dado que,

Área del rectángulo = 600[tex]m^2[/tex]

Sabemos,

Área del rectángulo = l × b

entonces,

l × b = 600[tex]m^2[/tex]  

⇒ l = 600/b ...(i)

A continuación, tenemos,

Perímetro = 100m

Lo sabemos,

Perímetro del rectángulo = 2(l + b)

⇒ 100 = 2(l + b)

al poner (i), tenemos,

⇒ [tex]100/2 = (600/b + b)[/tex]

⇒ [tex](600 + b^2)/b = 50[/tex]

al resolver esto, obtenemos;

[tex]b^2 + 600 = 50b[/tex]

⇒ [tex]b^2 - 50b + 600 = 0[/tex]

⇒ [tex]b^2 - 30b - 20b + 600= 0[/tex]

⇒ [tex]b(b - 30) - 20(b - 30) = 0[/tex]

⇒ [tex](b - 20) (b - 30)[/tex]

∵ [tex]b = 20 m, b = 30m[/tex]

poniendo el valor de b, podemos encontrar:

[tex]l = 600/20[/tex]

∵ [tex]l = 30 m[/tex]

∵ Longitud = 30m

Ancho = 20m

Learn more about " rectángulo" here:

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Answer:

7. Can't see the triangle

8. F

9. D

Step-by-step explanation:

8.  [tex]15*\frac{1}{4} = 3\frac{3}{4}[/tex]      [tex]16*\frac{1}{4} =4[/tex]    

9.  An obtuse angle is any angle bigger than [tex]90^{o}[/tex] (right angle) but smaller than [tex]180^{o}[/tex] (reflex angle)

Answer:

910.94

i got it right

x is less than or equal to 5, really simple

Answer:

C

Step-by-step explanation:

the median of the given frequency distribution is 470. Since \frac{80}{2} = 40 lies in the cumulative frequency of the class interval 24 – 32, so 24 – 32 belongs to the median class interval. Lower limit of median class interval = ℓ = 24. Hence, the median of the given frequency distribution = 26

Answer:

14 degrees is right! just wanted to add some credibility(?) idrk. best of luck!

Step-by-step explanation:

The value of x in the polygon that has six sides(hexagon) is 14.

An hexagon is a polygon with six sides.

The exterior angles of the hexagon are as follows:

80°, 56°, 61°, 43°, 92°, and (2x)°.

Therefore,

sum of exterior angle = 360°

Hence,

80 + 56 + 61  + 43 +  92 + 2x = 360

332 + 2x = 360

2x = 360 - 332

2x = 28

x = 28 / 2

x = 14

learn more on hexagon here: https://brainly.com/question/15902950

Answer:

66°

Step-by-step explanation:

It is given that :

Distance of the satellite from the tower = 2000 m

Height of the satellite above the tower = 4500 m

Therefore the angle of elevation can be found out by :

[tex]$\tan \theta = \frac{4500}{2000}$[/tex]

[tex]$\tan \theta = \frac{9}{4}$[/tex]

[tex]$\tan \theta = 2.25$[/tex]

[tex]$\theta = \tan^{-1}(2.25)$[/tex]

  [tex]$= 66 ^\circ$[/tex]

Therefore the tower can make contact with GPS satellite when it pointed at 66° angle.

Answer:

486 feet squared

Step-by-step explanation:

Answer:

It's rotated around (0,0)

Step-by-step explanation:

Answer: 3 to the right 5 going up i hope that can help a little bit

Step-by-step explanation: plz make brainly

Answer:

d

Step-by-step explanation:

took test

Answer:

Its just a tv

Step-by-step explanation:

Answer:

Step-by-step explanation:

Actually, you are to put this expression into standard form, with no radical in the denominator.  There's no equation here, just an expression.

3/(2√3) is to be multiplied by √3 to remove the radical from the denominator:

 3        √3        3√3           √3      

------- * ------ = ------------- = -------

2√3      √3           6             2

Answer:

896pi

Step-by-step explanation:

pi(8)^2(14)

Answer:

x  =  ±  √ 19 - 2

Answer:

Answer:

x = (4√3)/3 units

Step-by-step explanation:

Here we have a right 60,30 Triangle with Side 2 units and Htpotenuse x units.

Now, Sin 60° = Opp. /Hyp Sin 60° = 2/x But we know that, Sin 60° = √3/2 So,√3/2 = 2/x Cross multiplying we get,

x√3 = 4x = 4/√3 Rationalizing the denominator, x = (4/√3) × (√3/√3) x = (4√3)/3 units

Hope it helped and believing you understood it........All the

Step-by-step explanation:

Answer:

therefore ned spent 1 hour and 10 minutes completing the race.

Answer:

3d

Step-by-step explanation:

3 miles per day

if he runs for two days he runs 6 miles 3(2)

etc etc

Answer:the answer is 2

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

basically b = square root x times c

b= x

x= 2

c= 2+7 or the full length

Answer:

Step-by-step explanation:

Answer:

Explanation:

reflected across the x-axis: the y is negative (2 eliminated)

vertically stretched by a factor of 2 (they're all stretched by a factor of 2)

translated left 3 units (1 eliminated)

translated down 5 units (4 eliminated)

3 is left which is y = -2√(x+3) - 5

Answer:

126.0000

Step-by-step explanation:

Answer:

X^2-6x+8 -X+2=0

X^2-7x+10=0

(X-5)(X-2)=0

Answer X= 5 and X=2

Step-by-step explanation:

Answer:

J+12=25  J=25-12

J=13

K-16=4 K=4+16

K=20

C+8=12 C=12-8

C=4

R / 10 =4 R =4 x 10

R=40

64=16 x U. U= 64 / 16

U=4

3 x v = 12  V = 12 / 3

V= 4

Step-by-step explanation:

J=13

K=20

C=4

R=40

U=4

V= 4