1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
bija089 [108]
2 years ago
8

Which of the following are not trigonometry identities? Check all that apply

Mathematics
1 answer:
Anni [7]2 years ago
6 0
B and A

That’s the answer bro trust xx
You might be interested in
I HAVE LEARNED PEOPLE ARE MORE LIKELY TO REPLY WHEN A QUESTION IS WRITTEN IN CAPS. PLEASE HELP ME!
Genrish500 [490]

Answer:

wouldnt the answer be 95?

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
(3.8)(5,-9) what is this answer in standard form
marishachu [46]

Answer:

-15,2

Step-by-step explanation:

3.8 (5,-9)

Calculate the difference

3.8 (-4)

Multiply the numbers

3.8 x (-4)

-15,2

I hope this helps

3 0
2 years ago
Find the mean and the mean average height.
-BARSIC- [3]

Answer:

a.) mean=200.3

b.) 210 cm

Step-by-step explanation:

a.) We are given the heights and their frequency. We can make a new set:

198, 199, 199, 199, 200, 200, 201, 201, 201, 201, 201, 202, 202

Now find the mean. The mean is found by adding all the numbers in the set, then dividing the total by the number of terms in the set. Add:

198+199+199+199+200+200+201+201+201+201+201+202+202=2604

Now count the terms. There are 13 terms. Divide the total by the number of terms:

\frac{2604}{13}= 200.3

The mean is 200.3.

b.) Use random values like 200, 198 etc. and add them to the total of the last set, then divide by 14 instead of 13 (because there is a new player). Do this until you get a mean of 201 with the new height:

2604+210=2814\\\\\frac{2814}{14}= 201

For the new mean to be 201 cm, the new player has a height of 210 cm.

Finito.

8 0
3 years ago
A motorboat is capable of traveling at a speed of 14 miles per hour in still water. On a particular day, it took 15 minutes long
Anon25 [30]

By solving a system of equations we will find that the rate of current in the stream is S = 2 mi/h.

When the motorboat travels downstream, the total velocity will be the velocity of the motorboat in still water plus the velocity of the stream, while if the motorboat travels upstream, we have the velocity of the stream subtracted.

So upstream the speed is:

(14 mi/h - S)

Downstream the speed is:

(14 mi/h + S)

Where S is the rate of current in the stream.

We know that downstream it takes 15 minutes more to travel 12 miles, then we can write the system of equations:

(14 mi/h + S)*T = 12 mi

(14 mi/h - S)*(T - 15 min) = 12 mi

To solve this, we need to isolate one of the variables in one of the equations, I will isolate T in the first one:

T = (12 mi)/(14 mi/h + S)

Replacing that in the other equation we will get:

(14 mi/h - S)*((12 mi)/(14 mi/h + S) - 15 min) = 12 mi

Now we can solve this for S. Now we can multiply both sides by (14 mi/h + S).

(14 mi/h - S)*12 mi  - (14 mi/h + S)*(14 mi/h - S)*(- 15 min) = 12 mi*(14 mi/h + S)

Also notice that the speeds are in hours, so we can rewrite:

- 15 min = -0.25 h

(14 mi/h - S)*12 mi  - (14 mi/h + S)*(14 mi/h - S)*(- 0.25 h) = 12 mi*(14 mi/h + S)

168 mi^2/h - 12mi*S  + 49mi^2/h + 0.25h*S^2 = 168mi^2/h + 12mi*S

- 12mi*S  + 49mi^2/h - 0.25h*S^2 = 12mi*S

-24mi*S -  0.25h*S^2  + 49mi^2/h = 0

This is a quadratic equation, the solutions are:

S = \frac{24mi \pm \sqrt{(-24mi)^2 - 4*(49mi^2/h)*(-0.25h)}  }{2*-0.25h} \\\\S =  \frac{24mi \pm 25 mi  }{-0.5h}

We only take the positive solution, so we get:

S = (24 mi - 25 mi)/(-0.5 mi) = 2 mi/h

The rate of current in the stream is 2 mi/h.

If you want to learn more, you can read:

4 0
2 years ago
Find the area of a sector with a central angle of 32° and a radius of 8.5 millimeters. Round to the nearest tenth.
Mrrafil [7]
360 degrees in a circle
32/360 of total area is sector area

area=pir^2
r=8.5
area=pi8.5^2
area=226.980022 mm^2
multiply it by 32/360
sector=20.17600195555556

round
sector=20.2

C is answer
5 0
3 years ago
Other questions:
  • 4-5 of the money collected from a fundraiser was dived equally among 8 grades.What fraction of money did each grade receive
    8·1 answer
  • Which comes first? Intermediate algebra, or algebra?
    5·2 answers
  • I NEED HELP ASAP PLEASE!!!!!
    11·1 answer
  • Find the total area of the net below. 5 points each please help. Thanks! and have good day!
    6·2 answers
  • 3 times the sum of a number and 2
    7·2 answers
  • Y=-4-x; domain = {-6, 2, 7}<br> Find range plz
    14·1 answer
  • Help me please:(((((
    6·1 answer
  • In the two expressions shown below, r is not equal to zero.
    6·1 answer
  • If the volume of a cone is 12.56, and the height is 3. What is the radius of the cone? R=
    12·1 answer
  • If prices rose 20,000% per month, by what percentage would prices have risen in one year?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!