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grigory [225]
3 years ago
10

7.25% sales tax on a $89.99 cable modem​

Mathematics
1 answer:
melomori [17]3 years ago
8 0

Answer:

Sales tax is: $6.52

Step-by-step explanation:

You must multiply $89.99 by 0.0725 (this is how you find sales tax, moves decimal two places to the left)

When you multiply that, you get 6.524275, and you must round to 6.52. This is your sales tax.

The total price (with sales tax included) is: $96.51

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If A= (6,11), B= (1,5), and C= (7,0), show by means of slopes that ABC is a right triangle. Name the hypotenuse.
nexus9112 [7]

Since the product of AB and BC is -1, hence the ABC is a right triangle and the length AC is the hypotenuse

<h3>Right angled triangle</h3>

A right angles triangle is a triangle that has 3 sides and angles with one of its angles to be 90 degrees.

For the given coordinates to be a right angled triangle, one of the line must be perpendicular to the other and for two lines to be perpendicular, the product of its slope must be -1.

Find the slopes of AB, BC and AC

Slope of AB = 5-11/1-6
Slope of AB = -6/-5 = 6/5

Slope of BC = 0-5/7-1
Slope of BC = -5/6

Slope of AC = 0-11/7-6
Slope of AC = -11/1. = -11

Take the product of AB and BC
AB * BC = 6/5 * -5/6
AB * BC = -1

Since the product of AB and BC is -1, hence the ABC is a right triangle and the length AC is the hypotenuse

Learn more on right angle triangle here: brainly.com/question/22790996

#SPJ1

6 0
2 years ago
What is the value of x
sergey [27]
X = 7 / sin(45)

x = 7 / sqrt(2)/2

x = 7 sqrt(2)
4 0
3 years ago
Read 2 more answers
PLEASE HELP I PROMISE I WILL MARK BRAINLIEST IF RIGHT ASAP.
Roman55 [17]

Answer:

1.8

Step-by-step explanation:

5 0
2 years ago
I need the help with both questions &amp; need to show work. Thank u
Ira Lisetskai [31]
#1. The answer is B, just put the points on the graphic and you will see.

#2. The answer is A, the equation explained everything.
8 0
3 years ago
{x + 8y = -16<br> {x-3y = -5
Anna007 [38]

Answer: y= -1 and x=-8

x+8y=-16

x=-8y-16

so x-3y=-5

-8-16-3y=-5

-11y-16=-5

-11y=-5+16

-11y=11

y=-1

x-3y=-5

x+3=-5

x=-8

8 0
1 year ago
Read 2 more answers
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