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Mkey [24]
2 years ago
7

Katelyn went to the store and bought 2 shirts that were originally $12 each, but got a 15% discount for each shirt. If she has t

o pay 7% sales tax, how much did she spend total?
A) $24.83
B) $10.20
C) $21.83
D) $22.00
Mathematics
2 answers:
Aliun [14]2 years ago
5 0

Answer:

<u><em>B</em></u> <u><em>but am not really sure</em></u>

Step-by-step explanation:

maw [93]2 years ago
3 0

Answer:

c

Step-by-step explanation:

$21.83

hope this helps :))

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The angles in a triangle are in the ratio 2:3:4. Find the size of the smallest angle.
mars1129 [50]
Angles in a triangle add up to 180
2:3:4...added = 9

2/9 (180) = 360/9 = 40 <=== smallest angle
3/9 (180) = 540/9 = 60
4/9 (180) = 720/9 = 80
4 0
3 years ago
Please help do in 10min!!
Elena L [17]

Answer: Holding a tray


Step-by-step explanation:


3 0
3 years ago
Read 2 more answers
Write the polar equation in rectangular form.
zhuklara [117]

Answer:

Step-by-step explanation:

The identities you need here are:

r=\sqrt{x^2+y^2}  and   r^2=x^2+y^2

You also need to know that

x = rcosθ  and

y = rsinθ

to get this done.

We have

r = 6 sin θ

Let's first multiply both sides by r (you'll always begin these this way; you'll see why in a second):

r² = 6r sin θ

Now let's replace r² with what it's equal to:

x² + y² = 6r sin θ

Now let's replace r sin θ with what it's equal to:

x² + y² = 6y

That looks like the beginnings of a circle.  Let's get everything on one side because I have a feeling we will be completing the square on this:

x^2+y^2-6y=0

Complete the square on the y-terms by taking half its linear term, squaring it and adding it to both sides.

The y linear term is 6.  Half of 6 is 3, and 3 squared is 9, so we add 9 in on both sides:

x^2+(y^2-6y+9)=9

In the process of completing the square, we created within that set of parenthesis a perfect square binomial:

x^2+(y-3)^2=9

And there's your circle!  Third choice down is the one you want.

Fun, huh?

5 0
3 years ago
a) Determine the side lengths t and y to one decimal place. Show your work b) Calculate the perimeter of triangle PTY Round your
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Answer:

6

Step-by-step explanation:

6 0
2 years ago
Find the minimum or maximum value of the function g(x)=−3x2−6x+5
polet [3.4K]

Step-by-step explanation:

g(x) = ax²+bx+c

g(x)=−3x²−6x+5

a = -3, b= -6, c = 5

since a <0 , the function has only maximum value.

=> g'(x) = 0

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-6x = 6

x = -1

the maximum value => g(-1) =

-3(-1)²-6(-1)+5 = -3+6+5 = 9

the domain : {x | x € Real numbers}

the range : {y| y ≤ 9, y € Real numbers}

the function is increasing for x < -1

the function is decreasing for x > -1

4 0
3 years ago
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