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faust18 [17]
3 years ago
12

Find cos B exactly if a = 15, b = 11, and angle C is a right triangle

Mathematics
2 answers:
vazorg [7]3 years ago
8 0
The major trigonometric ratios at this level include sine, cosine and tangent.
sine is the ratio of opposite to hypotenuse, cosine is the ratio of adjacent to hypotenuse while tan is the ratio of opposite to adjacent. Therefore, in this case our adjacent is 15, To get the hypotenuse we use the pythagoras theorem 
15² + 9² = 346, thus the hypotenuse will be √346.
Hence, cos B will be 15/√346
Alla [95]3 years ago
7 0

Answer:

D. 15/√346

Step-by-step explanation:

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50 points and brainly
Andre45 [30]

Answer:

Part A:

c = .86*p

c =1.72 for 2 lbs

Part B:

c =.81p

Step-by-step explanation:

Part A:

Total cost = cost per pound * number of pounds

c = .86*p

Let p = 2

c = .86*2

c =1.72

Part B:

Total cost = cost per pound * number of pounds

c = .(.86-.05)*p

c =.81p

5 0
3 years ago
Needing assistance ASAP!
tekilochka [14]

Answer:


Step-by-step explanation:

A) 9.56x10^38 ergs B) 7.4x10^-3 mm A). For the sun, just multiply the power by time, so 3.9x10^33 erg/sec * 2.45x10^5 sec = 9.56x10^38 B) Of the two values 7.4x10^-3 and 7.4x10^3, the value 7.4x10^-3 is far more reasonable as a measurement for blood cell. Reason becomes quite evident if you take the 7.4x10^3 value and convert to a non-scientific notation value. Since the exponent is positive, shift the decimal point to the right. So 7.4x10^3 mm = 7400 mm, or in easier to understand terms, over 7 meters. That is way too large for a blood cell when you consider that you need a microscope to see one. Now the 7.4x10^-3 mm value converts to 0.0074 mm which is quite small and would a reasonable size for a blood cell.



3 0
3 years ago
Write an equation in slope-intercept form that represents the data. Show ALL work.
nignag [31]

Answer:

<em>y = 5x + 100</em>

Step-by-step explanation:

Using the x and corresponding y values from the given table.

Let's use the coordinate (0, 100) and (1, 105)

The equation in slope intercept form is expressed as y = mx+c

m is the slope

c is the y-intercept

Slope m = y2-y1/x2-x1

m = 105-100/1-0

m = 5/1

m =5

Get the y intercept

Substitute the slope m = 5 and any point say (0, 100) into the equation

y = mx+c

100 = 5(0) + c

100 = c

c = 100

Get the required equation;

y = mx+c

y = 5x + 100

<em>Hence the equation in slope-intercept form that represents the data is expressed as y = 5x + 100</em>

4 0
3 years ago
You're making dessert but your recipe needs adjustment. Your chocolate chip cookie recipe makes 4 dozen cookies, but you need 3
nignag [31]

Answer:

Butter = (3*15) / 4 = 45/4 = 11 1/4 tsp

Baking powder = (3*5) / 4 = 15/4

= 3 3/4 tsp

Pecans = (3 * 2) / 4 = 6/4

= 3/2 = 1.5 cups

5 0
3 years ago
11 QUIZ
il63 [147K]
11 QUIZ
Back Next
Question 1
Use the graph below to determine whether each system is consistent or inconsistent and if it is independent or dependent.
x + 3y=3
|2x - y=-3
y=3
| 4x - 2y = -6
x
+ y=-
x+y=3
x+y=-3
a consistent and dependent
b. consistent and independent
e inconsistent
8 0
3 years ago
Read 2 more answers
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