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
Fittoniya [83]
3 years ago
13

Find all solutions to the equation. 7 sin2x - 14 sin x + 2 = -5

Mathematics
1 answer:
Alenkinab [10]3 years ago
4 0
7sin²x-14sinx+2= -5
7sin²x-14sinx+7=0
7(sin²x-2sinx+1)=0
sin²x-2sinx+1=0
(sinx-1)(sinx-1)=0
sinx-1=0
sinx=1
x= \frac{ \pi }{2} +2n \pi  where n is an integer


You might be interested in
Why isn't 9 divisible by 5622​
Jobisdone [24]

Answer:

It is. Only you dont get a whole number.

Step-by-step explanation:

7 0
3 years ago
If the family pays $25 what is the exact amount of change they should receive
Bingel [31]
What’s the full question? you only put part of it on here
4 0
2 years ago
Evaluate the piecewise function for the given values.
adoni [48]

Answer:

f(-3) = -2

f(-2.6) = -2

f(0.6) = 2.4

f(4.5) = 8.5

Step-by-step explanation:

(Whole question:

Evaluate the piecewise function for the given values.

Find f(-3), f(-2,6), f(0.6), and f(4.5) for f(x)={ -2 If x ≤ 0 4x. If 0 <x <1. x + 4. If x ≥ 1)

As the piecewise function shows, the function f(x) has the value of -2 for values of x lesser or equal than 0, has the value of 4x if the value of x is between 0 and 1, and has the value of x+4 for values of x greater or equal than 1.

So, for f(-3), the value of x is lesser than 0, so we have that f(-3) = -2

For f(-2.6), the value of x is lesser than 0, so we have that f(-3) = -2

For f(0.6), the value of x is between 0 and 1, so we have that f(0.6) = 4*0.6 = 2.4

For f(4.5), the value of x is greater than 1, so we have that f(4.5) = 4.5 + 4 = 8.5

5 0
3 years ago
If a tank holds 5000 gallons of water, which drains from the bottom of the tank in 40 minutes, then Torricelli's Law gives the v
pochemuha

Answer:

V'(t) = -250(1 - \frac{1}{40}t)

If we know the time, we can plug in the value for "t" in the above derivative and find how much water drained for the given point of t.

Step-by-step explanation:

Given:

V = 5000(1 - \frac{1}{40}t )^2  , where 0≤t≤40.

Here we have to find the derivative with respect to "t"

We have to use the chain rule to find the derivative.

V'(t) = 2(5000)(1 - \frac{1}{40} t)d/dt (1 - \frac{1}{40}t )

V'(t) = 2(5000)(1 - \frac{1}{40} t)(-\frac{1}{40} )

When we simplify the above, we get

V'(t) = -250(1 - \frac{1}{40}t)

If we know the time, we can plug in the value for "t" and find how much water drained for the given point of t.

4 0
4 years ago
4. 7 + 14x<br> What does that mean
kotegsom [21]

7 + 14x means that a number x (x could be any real number) times 14 is added to 7.

So if x = 2:

7 + 14x = 7 + 14(2) = 28 + 7 = 35

Happy to help!

8 0
3 years ago
Read 2 more answers
Other questions:
  • How do I do this problem????
    5·1 answer
  • The population of a city has decreased by 35% since it was last measured. If the current population is 16900 what was the previo
    6·1 answer
  • Question 6 of 15, Step 1 of 1
    13·1 answer
  • What should be added to 8 to make the sum 0
    11·2 answers
  • What is the perimeter of a rectangle with a length of 23 mm and a width of 26mm
    11·1 answer
  • The second quartile of a data set is 4.2. Which statement about the data values is true?
    8·2 answers
  • A Roth IRA is advertised to pay 1.5% annual interest. You researched the rate of inflation to be 1.15% this year. What is the ac
    10·1 answer
  • What figure is shown in the drawing ? JH , JK , EJ , EK
    10·1 answer
  • LINEAR, QUADRATIC, EXPONENTIAL REVIEW: QUESTION 3 Find the equation of the line that has a slope of 2 and passes through the poi
    8·1 answer
  • Which system is equivalent to
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!