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zaharov [31]
4 years ago
5

Grammy gave the servera 15 dollar tip if the tip was 20% of the cost of dinner how much was dinner

Mathematics
1 answer:
FrozenT [24]4 years ago
5 0
The cost of the dinner was $75 
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Please help asap!!<br> I think D is one of the answers but i'm not sure
vampirchik [111]

Answer: B, D, and maybe E. Check my explanation for 'E'

Step-by-step explanation:

There are a few ways of visualizing the expression, but Ill try to show it to easiest way possible.

x^\frac{3}{2} =(x^3)^\frac{1}{2}

Notice nothing was changed because of the property of exponents. An exponent to a power means to multiply them. A thing you should remember for all future cases is that the one-half power means square root. It is the exact same thing. Therefore the new expression I created is the square root of 'x' cubed.

A:) This would be equivalent to x^2/3

B:) This is equivalent to x^3/2 because the square root is the 1/2 power to the power of 3.

C:) This would be equivalent to x^2/3

D:) This is equivalent to x^3/2 because the square root is the 1/2 power, but multiplied by the power under the radical.

E:) If this answer is to the third power, then it is equivalent. I cannot tell from this picture.

5 0
3 years ago
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Emily needs to buy fabric to make curtain panels for her windows. Each panel will be 4 feet long and 1/2 foot wide. Each piece o
mafiozo [28]
The pieces of fabric are already the correct length, so it is just a matter of how many panels will fit into one piece of fabric. 2/(1/2) = 4, so she can make 4 panels from 1 piece of fabric.
3 0
3 years ago
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9 miles is approximately equal to 16 km. How many km are equal to 63 miles? How many miles are equal to 48 km?
Vikki [24]
The first answer is 112 because you multiply 9 by 7 to get 63 and then you multiply 16 by 7 to get 112. and the second one is 27 because 16 times 3 equals 48 so then you multiply 9 by 3 to get 27.:)
7 0
3 years ago
Hii please help i’ll give brainliest!!
Arte-miy333 [17]

Answer:

direction

Step-by-step explanation:

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3 years ago
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show that the lines x2-4xy+y2=0 and x+y=3 form an equilateral triangle also find area of the triangle
arlik [135]

Given pair of lines are x² + 4xy + y² = 0

⇒ (y/x) ² + 4 y/x + 1 = 0

⇒ y/x = -4±2√3/2 = -2±√3,

∴  The lines y = (-2 + √3) x and y = (-2 - √3) x and x - y = 4 forms an equilateral triangle

Clearly the pair of lines x² + 4xy +y²  = 0  intersect at origin,

The perpendicular distance form origin to x - y = 4 is the height of the

h = 2 √ 2

∵ Area of triangle = h²/√3 = 8/√3

4 0
3 years ago
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