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Alik [6]
3 years ago
14

#3 The sales tax on a $20 shirt was 9%.

Mathematics
1 answer:
saveliy_v [14]3 years ago
3 0

Answer:

Step-by-step explanation:

sales tax on the shirt= 20(0.09)=1.8 dollars

total cost with sales tax =20+20(0.09)=21.8$

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WILL MEDAL help me if please
nordsb [41]
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Add your like terms
x^{2} +18x+81

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4. Since it is the perimeter, we add the 3 together.
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Add the like terms together:
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kari74 [83]
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Riley tried the following homework question:
blondinia [14]

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4 0
2 years ago
Item 12
kozerog [31]

Answer:

The height is 4.472

Step-by-step explanation:

That formula is Heron's formula.

Where "s" is calculated like this:

s = (a + b + c) / 2

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b = 12

c = 6

replacing:

s = (14 + 12 + 6) / 2

s = 16

Now we calculate the area:

A ^ 2 = 16 * (16−14) * (16−12) * (16−6)

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The area of the triangle is:

A = b * h / 2

In this case we will take the base as the longest side of the triangle, that is to say = 14

Thus:

h = A * 2 / b

h = 35.777 * 2/16

h = 4.472

So the height is 4.472

4 0
3 years ago
What is the angle in a triangle that is part of a linear pair? i will give 15 points im desperate
gogolik [260]

Answer:  Linear pairs of angles add up to 180 degrees. A+B=180

Step-by-step explanation: A linear pair of angles is formed when two lines intersect. Two angles are said to be linear if they are adjacent angles formed by two intersecting lines. The measure of a straight angle is 180 degrees, so a linear pair of angles must add up to 180 degrees

7 0
3 years ago
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