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Kazeer [188]
3 years ago
12

Find mZA. Round to the nearest degree. 10 10 B 13 11

Mathematics
2 answers:
Lunna [17]3 years ago
6 0
G office give rn sick in NCO IX do ox cl bc VP oz cl ox CK iz VP ox VP ox
nadezda [96]3 years ago
5 0

Step-by-step explanation:

{13}^{2}  =  {10}^{2}  +  {11}^{2}  - 2 \times (11)(10) \cos(a)  \\ 169 = 100 + 121 - 110 \cos(a)  \\ 52 = 110 \cos(b)  \\  \cos(b)  =  \frac{26}{55}  \\ b = 61.78 \: degrees

.....

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What is the value of n in the equation below?<br><br>A:-20<br>B:-9<br>C:9<br>D:20
Nikitich [7]
Answer is C:9
12^9/12^5 = 12^4

hope it helps
8 0
3 years ago
Read 2 more answers
Through (-1,-3) slope=8
gtnhenbr [62]

Answer:

y=8x+5

Step-by-step explanation:

Please see attached picture for full solution.

I assume that you are trying to find for the equation of the line.

First, substitute the value of the slope given into m in the equation.

Then substitute the coordinates into x and y to find the y-intercept.

4 0
3 years ago
What is the answer please??
xenn [34]

Answer:

Answer is <em>n</em><em>/</em><em>2</em>

Step-by-step explanation:

I started with the constant n

In second step I divided the n by 2

answer \: is \:   \: \frac{n}{2}

<em>HAVE A NICE DAY</em><em>!</em>

<em>THANKS</em><em> </em><em>FOR GIVING ME THE OPPORTUNITY TO</em><em> </em><em>ANSWER YOUR QUESTION</em><em>. </em>

5 0
3 years ago
Read 2 more answers
How to factor 25x^2 - 81= 0
dalvyx [7]
Your question is a difference of squares. both terms that need to be factored are squared. to solve take the square root of each put into two terms one of addition and one of subtraction.

anwser= (5x-9)(5x+9)

the reason this works is because when you foil you get
25x²-45x+45x-81 
the middle terms cancel revealing
25x²-81
4 0
3 years ago
Plz answer and im giving a lot of points ; ; oh and its two questions in one
Natali [406]
Please don't ask 2 questions in 1 question



remember that percent is parts out of 100 so x%=x/100
basically just remove the percent sign and move the decimal place 2 places to the left  to convert to fraction

the first one
20 dollars
4.75% tax
15% tip
it depends if you want to tip on the total with tax or without tax
it is better to top on the without-tax value since tax comes from you so
find 4.75% of 20 and add that to 15% of 20 then add that to 20 to get the proper value

scenarios
1. 20+(20 times 4.75%)+(20 times 15%)=23.95
2. ([(20 times 104.75%)] times 115%)=24.09
both are bellow $25 so $25 shoudl be enough to cover it




total cost of a spa treatment of 42 with 6% tax and 20% tip
so you could again do two things:
1. apply tax and give tip on the new amount
2. find the tip and add that to the tax of only 42

scenarios:
1.(42 times 106%) times 120%=$50.4
2. (42 times 20%) +(42 times 106%)=$52.92
it depens on what you tip on
6 0
3 years ago
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