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Arte-miy333 [17]
3 years ago
9

A pair of jeans is marked 25% off. If the original price is $31.50, what is the discount amount that will be taken off of the or

iginal price?
Mathematics
1 answer:
Tresset [83]3 years ago
5 0

Answer: $7.88

Step-by-step explanation: Twenty five percent of 31.50 is 7.875.

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Betty took a doll she inherited from her grandmother to the antique store. The dolls original price tag says $6.80. The antique
mariarad [96]
There was a 12.35% increase in the price.
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3 years ago
Without solving determine the number of real solutions for each quadratic equation
snow_lady [41]

Step-by-step explanation:

b^2-4b+3=0

b²-3x-b+3=0

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either

b=3 or b=1

.

2n^2 + 7 = -4n + 5

2n²+4n+7-5=0

2n²+4n+2=0

2(n²+2n+1)=0

(n+1)²=0/2

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x - 3x^2 = 5+ 2x - x^2

0=5+ 2x - x^2-x +3x^2

0=5+x+2x²

2x²+x+5=0

comparing above equation with ax²+bx +c we get

a=2

b=1

c=5

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={-1±√-39}/2

8 0
2 years ago
The first step is to use the property of equality to combine the constant terms.
Karo-lina-s [1.5K]

Answer:

subtraction

Step-by-step explanation:

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3 0
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N is a rational number.m is an irrational number.n2 cannot be an irrational number? why or why not
Korolek [52]

If n is rational, it means that

n\in\mathbb{Q}\Rightarrow n=\frac{p}{q},\quad p\in\mathbb{Z},\quad q\in\mathbb{Z}^*

Therefore when we do n² we can write it as

n^2=\frac{p^2}{q^2},\quad p\in\mathbb{Z},\quad q\in\mathbb{Z}^*

Remember that the product of two integer numbers is also an integer, therefore we can guarantee that

p^2\in\mathbb{Z}\text{ and }q^2\in\mathbb{Z}^*

Then we can confirm that n² is the quotient of two integers and the denominator is not zero, therefore, n² is always rational, it cannot be an irrational number

8 0
11 months ago
A mathematical term that does not include an equal or inequality sign is called an
Evgen [1.6K]
The answer would be a mathematical phrase. Hope that helped.
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3 years ago
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