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Anarel [89]
3 years ago
15

The music store is having a 15% off sale on all classical music cds. Lyell has a coupon for 20% off any classical music cd. How

much will Lyell save on a classical music cd that has a price of $23.99?
a.
$7.20
b.
$7.68
c.
$8.40
d.
$9.60
Mathematics
1 answer:
EleoNora [17]3 years ago
4 0

Answer:

b.

$7.68

Step-by-step explanation:

23.99 * 15%

23.99 * .15 = 3.60 off

23.99-3.60 =20.39 new price

now to use the coupon

20.39 * 20%

20.39*.20= 4.08 off

20.39 - 4.08 =16.31


23.99-16.31 = 7.68

He saved 7.68




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Mr.Swanson drove 150 miles in 4 hours how many miles will he drive in 1 hour
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Answer:

37.5 miles

Step-by-step explanation:

Distance covered in 4 hours = 150 miles

Distance covered in 1 hour = 150/4 = 37.5 miles

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Which of the following are properties of the circumcenter of a triangle? Check all that apply.
kakasveta [241]

Answer:

A) The circumcenter of a right triangle falls on the side opposite the right angle

B) The circumcenter is at the intersection of the perpendicular bisectors of the triangle's sides

D.) The circumcenter is equidistant from  (Apex)

Step-by-step explanation:

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A line that passes through the points (–4, 10) and (–1, 5) can be represented by the equation y = y equals negative StartFractio
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Answer:

y=-\frac{5}{3} x+\frac{10}{3}  or what is the same: 5x+3y=10

Step-by-step explanation:

First we find the slope of the line that goes through the points (-4,10) and (-1,5) using the slope formula: slope=\frac{10-5}{-4-(-1)} =\frac{5}{-3} =-\frac{5}{3}

Now we use this slope in the general form of the slope- y_intercept of a line:

y=-\frac{5}{3} x+b

We can determine the parameter "b" by requesting the condition that the line has to go through the given points, and we can use one of them to solve for "b" (for example requesting that the point (-1,5) is on the line:

y=-\frac{5}{3} x+b\\5=-\frac{5}{3} (-1)+b\\5=\frac{5}{3}+b\\5-\frac{5}{3}=b\\b=\frac{10}{3}

Therefore, the equation of the line in slope y_intercept form is:

y=-\frac{5}{3} x+\frac{10}{3}

Notice that this equation can also be written in an equivalent form by multiplying both sides of the equal sign by "3", which allows us to write it without denominators:

y=-\frac{5}{3} x+\frac{10}{3}\\3*y=(-\frac{5}{3} x+\frac{10}{3})*3\\3y=-5x+10\\5x+3y=10

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Answer:

no

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8, 10, 6

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2 + 6 = 8

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