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notka56 [123]
3 years ago
9

^please help^

Mathematics
2 answers:
aliina [53]3 years ago
6 0
The answer would be 27.9
masha68 [24]3 years ago
5 0
I'm pretty sure it's 27.9m
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At a restaurant you only have 20 dollars to spend on dinner. in addition to the cost of the meal you must pay only 5% sales tax
aev [14]
Alright so to do this you need some basic algebra
you have to pay an extra 20% of whatever you buy
thus we can make the following equation
.2x+x=20  (since 20 is the amount of money you have)
combining the like terms,
1.2x=20
and finally, dividing both sides by 1.2
x=$16.67
don't forget to check!
.05*16.67=.83 (sales tax makes the total $17.5)
.15*16.67=2.5 (tip makes the total $20)
whaddya you know, it works!
most expensive item you can buy will cost $16.67
hope this helped!
4 0
3 years ago
The cost c (in dollars)of making n feet of cabinet is represented by c = 18n + 45. how many feet of cabinet are made when the co
user100 [1]
To solve this, replace the c with 441 and solve for n:
441=18n+45
396=18n
22=n
6 0
3 years ago
una escalera de 12ft de longitud esta apoyada contra una pared, de modo que su base se encuentra a 4 ft de la pared a nivel del
Marrrta [24]

Answer:

Step-by-step explanation:

Altura = 11.312 pies

i) La escalera que descansa contra la pared formará un triángulo en ángulo recto.

ii) la escalera formará la hipotenusa del triángulo rectángulo dado por h = 12 pies.

iii) La base está dada por 4 pies.

iv) de la fórmula del triángulo en ángulo recto.

   base  = altura = \sqrt{hipotenusa^{2}\hspace{0.15cm}- \hspace{0.15cm} base^{2} }  = \sqrt{12^{2}\hspace{0.15cm} - \hspace{0.15cm}4^{2}  } = \sqrt{144\hspace{0.15cm} - \hspace{0.15cm}16} = \sqrt{128} = \hspace{0.15cm}8\sqrt{2} = 8\times1.414 = 11.312 pies

6 0
3 years ago
Calculate the number of roots of <br> 2sin^3x-5sin^2x+2sinx=0<br> in the interval 0&lt;=x&lt;=pi
natita [175]

Answer:

Which points are collinear?

G, A, and T

G, E, and T

A, T, and E

G, A, and E

Step-by-step explanation:

6 0
3 years ago
Which pairs of angles are supplementary? A) ∠BCD and ∠BAD B) ∠BCD and ∠ABC C) ∠BCD and ∠CDA D) ∠ABC and ∠BAD
Bogdan [553]
<span>∠ABC ∠BAD is the correct answer

</span>
4 0
3 years ago
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