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Studentka2010 [4]

3 years ago

6

Find the rate of markup if a book cost the retailer 17.50 and sells for $24.95. Round the the nearest tenth if needed

1 answer:

CaHeK987 [17]3 years ago

4 0

Mark up = profit ÷ cost

Let M = mark up

Let p = profit

Let c = cost

M = p/c

Take it from here.

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Describe the nature of the roots for this equation.<br> 3x^2+x-5= 0

m_a_m_a [10]

Answer:

<h2>This equation has no natural roots.</h2>

Step-by-step explanation:

$3x^2+x-5=0\\\\\text{Use the quadratic formula for}\ ax^2+bx+c=0\\\\x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\\text{For the given equation:}\\\\a=3,\ b=1,\ c=-5\\\\b^2-4ac=1^2-4(3)(-5)=1+60=61\\\\x=\dfrac{-1\pm\sqrt{61}}{(2)(3)}=\dfrac{-1\pm\sqrt{61}}{6}\notin\mathbb{N}$

4 0

2 years ago

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If a semi truck's trailer is 40 feet long, 10 feet wide, and has a height of 8 feet, what is its volume?

Temka [501]

First multiply 40 and 10 to get 400. Then multiply 400 by 8 to get 3,200.

Your answer would be: 3,200

8 0

3 years ago

Brian's backsplash in her kitchen is made up in squares

zzz [600]

Answer: squares

Step-by-step explanation:

Squares

8 0

2 years ago

Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.

Tom [10]

$f(x)=x+21\Longrightarrow f(4)=4+21=\boxed{25}$

3 0

3 years ago

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Please work it out down below.

Anna35 [415]

Answer:

16

Step-by-step explanation:

3 |a-b| +2|b-1|

a= -2 and b=-4

3 |-2--4| +2|-4-1|

3 |-2+4| +2|-4-1|

3 |2| +2|-5|

Absolute value means takes whatever is inside and make it positive

3*2 +2*5

6 +10

16

5 0

3 years ago