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damaskus [11]
2 years ago
10

A sign in the store window advertises 3 t-shirts for $16.50. Which coordinate pair shows the unit rate for the t-shirt sale?

Mathematics
2 answers:
Lerok [7]2 years ago
8 0
16.50/3=5.5 the rate is 5.5.
rosijanka [135]2 years ago
7 0

Answer:

The unit rate as coordinate can be written as( 1,5.5)

Step-by-step explanation:

A rate is a ratio of  comparing quantities. A unit rate is a rate with 1 in the denominator. It is given 3 shirts cost $16.50.

To find the unit rate we find the rate of 1 shirt.

Rate of 3 shirts = $16.50

Rate of 1 shirt = 16.50÷3=$5.50

The unit rate as coordinate can be written as( 1,5.5)

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Answer:

1

Step-by-step explanation:

We will consider only the last digit multiplication and the pattern.

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9 * 9 = 81 [1 is important]

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2 years ago
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Which are the solutions of x2 = –5x + 8? StartFraction negative 5 minus StartRoot 57 EndRoot Over 2 EndFraction comma StartFract
serg [7]

Answer:

x=\frac{-5-\sqrt{57} }{2}\ or\ x=\frac{-5+\sqrt{57} }{2}

Step-by-step explanation:

Given:

The equation to solve is given as:

x^2=-5x+8

Rearrange the given equation in standard form ax^2+bx +c =0, where, a,\ b,\ and\ c are constants.

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x^2+5x-8=0

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The solution of the above equation is determined using the quadratic formula which is given as:

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x=\frac{-5\pm \sqrt{5^2-4(1)(-8)}}{2(1)}\\x=\frac{-5\pm \sqrt{25+32}}{2}\\x=\frac{-5\pm \sqrt{57}}{2}\\\\\\\therefore x=\frac{-5-\sqrt{57} }{2}\ or\ x=\frac{-5+\sqrt{57} }{2}

Therefore, the solutions are:

x=\frac{-5-\sqrt{57} }{2}\ or\ x=\frac{-5+\sqrt{57} }{2}

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Answer:

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Step-by-step explanation:

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