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True [87]
3 years ago
11

Cot^3/csct=cost(csc^2t-1)

Mathematics
1 answer:
kolbaska11 [484]3 years ago
8 0
\dfrac{\cot^3t}{\csc t}=\dfrac{\dfrac{\cos^3t}{\sin^3t}}{\dfrac1{\sin t}}=\dfrac{\cos^3t}{\sin^2t}=\cos t\cot^2t=\cos t(\csc^2t-1)
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Help me and you get 40 points
victus00 [196]

Answer:

The angle 6 measures 54 degrees

Step-by-step explanation:

Angle 6 is congruent to angle 7 ("-2x+34") as it is an opposite angle in straight line intersection. But angle 6 is congruent to angle 2 (-9x-36) due to the two horizontal lines being parallel. So we can write the following equality to determine the value of x:

-2x + 34 = -9x -36

7x = -70

==> x = -10

Now we can answer the question:  the angle 6 is

-2x + 34 = -2(-10)+34 = 54 degrees

7 0
3 years ago
Hospital records show that a certain surgical procedure takes on an average 111.6 minutes with a standard deviation of 2.8 minut
Arisa [49]

Answer:

At least 37.74% of the procedures takes between 97.6 and 125.6 minutes

Step-by-step explanation:

The percentage is the area of the standard normal distribution curve between the values 97.6 and 125.6

The standard normal variate of the given data is found as

Z=\frac{X-\overline{X}}{\sigma }

Thus for the given values Z is calculated as under

Z_1=\frac{97.6-111.6}{2.8}=-5

Similarly for the other value we have

Z_2=\frac{125.6-111.6}{2.8}=5

Thus the area between the calculated values can be found from standard normal distribution table to be 37.74%

8 0
3 years ago
Which point could be removed in order to make the relation a function? {(0, 2), (3, 8), (–4, –2), (3, –6), (–1, 8), (8, 3)}
mamaluj [8]
(8,3) hope this helps 
have a great day

6 0
3 years ago
After doing some work in the house, Bob and Carol want to put a concrete patio on the side of the house to keep people from trac
12345 [234]

Answer:

V=3.098 yd³

Step-by-step explanation:

To answer this question we need to work with formula of the Volume of rectangular prism, the patio. Once it is required 1 inch deep. Some relations will be useful.

As 1 yard = 1 feet/3

1 yard = 1 inch/36

1 feet=12 inches

a) 23 feet 9 inches

23 ft 9''=23 +9/12=23.75 ft

b)10 feet  1 inch

10 feet  1" = 10ft + 1/12=10.083 ft

c)4 inches: 4/12 =0.33

V= w.l.h

V=23.75*10.083*0.33=79.025 ft³

Converting from cubic yard to cubic feet:

V≈79.025 : 27 yd³=2.926 yd³

Considering the possible spillage due to uneven base. ( adding 5%of V)

V≈ 2.92+0.05*(2.92)=3.098 yd³

4 0
3 years ago
Read 2 more answers
i have 5 1/2 yards of fabric and i have 33 students and each students need bandanna. how di work this problem
Akimi4 [234]
Step 1:
Start by setting it up with the divisor 5 on the left side and the dividend 33 on the right side like this:

5 ⟌ 3 3

Step 2:
The divisor (5) goes into the first digit of the dividend (3), 0 time(s). Therefore, put 0 on top:

0
5 ⟌ 3 3

Step 3:
Multiply the divisor by the result in the previous step (5 x 0 = 0) and write that answer below the dividend.

0
5 ⟌ 3 3
0

Step 4:
Subtract the result in the previous step from the first digit of the dividend (3 - 0 = 3) and write the answer below.

0
5 ⟌ 3 3
- 0
3

Step 5:
Move down the 2nd digit of the dividend (3) like this:

0
5 ⟌ 3 3
- 0
3 3

Step 6:
The divisor (5) goes into the bottom number (33), 6 time(s). Therefore, put 6 on top:

0 6
5 ⟌ 3 3
- 0
3 3

Step 7:
Multiply the divisor by the result in the previous step (5 x 6 = 30) and write that answer at the bottom:

0 6
5 ⟌ 3 3
- 0
3 3
3 0

Step 8:
Subtract the result in the previous step from the number written above it. (33 - 30 = 3) and write the answer at the bottom.

0 6
5 ⟌ 3 3
- 0
3 3
- 3 0
3
Which equals 6
8 0
3 years ago
Read 2 more answers
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