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Vladimir79 [104]
2 years ago
15

Devaunte goes to Barnes and Noble to buy a book that is originally $14.50. Devaunte was trying to save money, so he made sure to

bring a coupon that gives him 20% off of his book.
Mathematics
2 answers:
adoni [48]2 years ago
7 0

the answer I think is he saved $2.9

slavikrds [6]2 years ago
3 0

Answer:

$2.9

Step-by-step explanation:

The Expression is:

14.5 − 0.8(14.5)

The Answer is:

$2.9

You might be interested in
Triangle DEF has vertices D(0,0), E(7,0), and F(3,7).
Leni [432]

Answer:

(3, 1.7)

Step-by-step explanation:

The point at which the vertices of a triangle meet is known as the orthocenter of the triangle. The orthocenter passes through the vertex of the triangle and is perpendicular to the opposite sides.

Two lines are perpendicular if the product of their slopes is -1.

The slope of the line joining D(0,0), F(3,7) is:

m_1=\frac{7-0}{3-0}=\frac{7}{3}

The slope of the line perpendicular to the line joining D and F is -3/7. The orthocenter is perpendicular to the line joining D and F and passes through vertex E(7, 0). The equation is hence:

y-y_1=m(x-x_1)\\\\y-0=-\frac{3}{7} (x-7)\\\\y=-\frac{3}{7}x+3 \ .\ .\ .\ (1)

The slope of the line joining E(7,0), and F(3,7). is:

m_1=\frac{7-0}{3-7}=-\frac{7}{4}

The slope of the line perpendicular to the line joining E and F is 4/7. The orthocenter is perpendicular to the line joining E and F and passes through vertex D(0, 0). The equation is hence:

y-y_1=m(x-x_1)\\\\y-0=\frac{4}{7} (x-0)\\\\y=\frac{4}{7} x\ .\ .\ .\ (2)

The point of intersection of equation 1 and equation 2 is the orthocenter. Solving equation 1 and 2 simultaneously gives:

x = 3, y = 1.7

4 0
2 years ago
<img src="https://tex.z-dn.net/?f=%5Cfrac%7B2%7D%7B5%7D%20x%2B%5Cfrac%7B1%7D%7B2%7D%20%3D%5Cfrac%7B3%7D%7B4%7D" id="TexFormula1"
kotegsom [21]

Answer:

x = \frac{5}{8}

Step-by-step explanation:

Solve for  x  by simplifying both sides of the equation, then isolating the variable.

6 0
2 years ago
X=<br> y=<br> z=<br> what’s the answer?
skelet666 [1.2K]

Answer:

I only know z

z = 160°

sorry

5 0
3 years ago
what are the coordinates of the point on the directed line segment (-1,-2) to (9,-10) that partitions the segment into a ratio o
Ymorist [56]

Answer:

[6.5,-7.25]

Step-by-step explanation:

Given the partitioning ratio as 3:1

#Find the length of the x-coordinate and multiply by the ratio:

x length=9--1=10

=>\frac{1}{4}\times 10=2.5

#We subtract 2.5 from the x-max to get the point=9-2.5=6.5

#Find the length of the y-coordinate and multiply by the ratio:

x length=-9--2=-7

=>\frac{1}{4}\times -7=-1.75

#We subtract -1.75 from the y-max to get the point=-9--1.75=-7.25

Hence,  the coordinates that partitions the segment into a ratio of 3 to 1 is [6.5,-7.25]

4 0
3 years ago
If a train traveld from station A at 60 mph in direction of station B, which is 60 miles away, how long would it take the train
kirill [66]

Answer:

b

Step-by-step explanation:because

5 0
3 years ago
Read 2 more answers
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