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Umnica [9.8K]
4 years ago
6

Please help! It is due today. I will give you brainliest

Mathematics
1 answer:
Tamiku [17]4 years ago
7 0
I assume you mean 15-20.
There are several ways you can get it so I will give you guidelines to make it easier to find the answers using question 15 as an example.
You know one side and an angle and that the triangle has a right angle it.

If you are looking for a side opposite of your known angle and it is not the hypotenuse use: Tan^-1(angle)*known side, after that use pythagorus theorem. You can check if this is the right length by taking the sine of the unknown angle (90-known angle) This will get most of your problems except 18 and 19.
For 18 and 19, I would replace tan with the sin version. For 20, you can either work to have all of the digits on one side of the equation, or you can use the first equation after solving for the missing angle. I will double check my math when I am by a pad of paper to work it out, if you can reply with answers, I can compare to make sure they are right.
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The food stand at the zoo sold 2,514 pounds of hamburger last month. The average cost a pound of hamburger $2. Jeremy estimates
sergiy2304 [10]
That is about right... 2,514 X 2 = 5,028 so he is about 1,000 off. I will leave the rest to you.

7 0
4 years ago
Sara's new car depreciates 8% each year. Write an exponential function to model the depreciation each month. Write an exponentia
Alinara [238K]

Answer:

y= $(1-0.08)y

Step-by-step explanation:

3 0
3 years ago
64% of what number is 48
timama [110]
X= 75

the equation is 
is/of       %/100

48 = is 
64 = % 
X = of
100 = 100
  
48 X 100 = 4,800
64 X x = 64x 

64x / 64 = x
4800 / 64 =  75

<span>SO... x = 75</span>
5 0
3 years ago
What is an expression involving division that is equivalent to the expression below?<br> 2/9 x 3/4
Ierofanga [76]

Answer:

2/9 ÷ 4/3

Step-by-step explanation:

5 0
3 years ago
Please help this is almost due soon!
PolarNik [594]

Answer:

6\pi

Step-by-step explanation:

The area of the circumference of a circle is:

C=2\pi r

We know that r is 8, so we can plug that into the formula.

However, there's a problem.  We only want 3pi/4 of the circumference, not the entire circle's circumference.  Therefore, we have to divide by part/whole.  In this case, the part is 3pi/4, and the whole is 2pi (the entire circle is 2pi radians).

C = (\frac{3\pi/4}{2\pi})*(2\pi *8)\\C = (\frac{3}{8})(16\pi)\\C = \frac{48\pi }{8} \\C = 6\pi

6 0
3 years ago
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