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
Lerok [7]
3 years ago
10

Not sure if I solved this right. anyone know?

Mathematics
2 answers:
Anestetic [448]3 years ago
7 0
2tan^2x - secx = 1
Plug in the values for secx and tanx.


First choice: secx = -1
means tan^2 x = 0
2(0) - (-1) = 1

Second choice: secx = 3 = hyp/adj
means  tanx = √8
(Pythagorean theorem)
2(8) - 3 ≠ 1

Third choice: tanx = 3 = opp/adj
hyp = √(10)
means secx = √(10)
2(9) - √(10) ≠ 1

fourth choice:
tanx = -1 = opp/adj
means secx = √(2)
2(1) - √(2)  ≠ 1

fifth choice: secx = 3/2
means cosx = 2/3 ; tanx = √(5)/2
2(5/4) - 3/2 = 1

Looks like the 1st and 5th choice work.
nadya68 [22]3 years ago
6 0
Im so sorry the picture isnt loading for me -,-
You might be interested in
Evelyn is working two summer jobs, making $18 per hour tutoring and making $9 per hour landscaping. In a given week, she can wor
Yakvenalex [24]

One possible solution is 10 hours of tutoring and 3 hours of landscaping.

<h3>Inequality</h3>

Inequality is an expression used to show the non equal comparison of two or more numbers and variables.

Let x represents the number of hours tutoring and y represents the number of hours landscaping

From the question, we form the equations:

  • x + y ≤ 13   (1)
  • 18x + 9y > 180   (2)

A possible solution is (10, 3)

One possible solution is 10 hours of tutoring and 3 hours of landscaping.

Find out more on inequality at: brainly.com/question/22354790

8 0
3 years ago
$80 decreased by 20%
padilas [110]

Answer:

$64

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Which point is on the graph of the function
natulia [17]

Answer:

<h2>(1, 1)</h2>

Step-by-step explanation:

(x,\ y)\\\\\text{Put thecoordinates of the points to the equation of}\ f(x)\ \text{and check the equality}:\\f(x)=\dfrac{1}{2}(2)^x\\\\(0,\ 1)\to x=0,\ y=1\\L=1\\R=\dfrac{1}{2}(2)^0=\dfrac{1}{2}(1)=\dfrac{1}{2}\\\\L\neq R\\\\(0,\ 2)\to x=0,\ y=2\\L=2\\R=\dfrac{1}{2}\\\\L\neq R\\\\\left(1;\ \dfrac{1}{2}\right)\to x=1,\ y=\dfrac{1}{2}\\L=\dfrac{1}{2}\\R=\dfrac{1}{2}(2)^1=\dfrac{1}{2}(2)=1\\\\L\neq R\\\\(1,\ 1)\to x=1,\ y=1\\L=1\\R=1\\\\L=R

4 0
3 years ago
Find the value for y when x=2: <br> y=2x+5
max2010maxim [7]

Answer:

y=9

Step-by-step explanation:

3 0
3 years ago
Stephanie saw an ad in the paper that her favorite kind of perfume was on sale for 25% off. Her favorite perfume costs $20 per b
Natalija [7]

Answer:

$5

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • Find the greatest common factor of the<br> following monomials:<br> 18g^6h^5<br> 16g^3h^6
    8·1 answer
  • (4/4) PLEASE HELP! URGENT.. LAST QUESTION. WILL MARK BRAINLIEST AND 5 STARS IF CORRECT ASAP! -50POINTS-
    12·2 answers
  • The area of each triangle
    9·1 answer
  • When she subtracts 4 from both sides, Startfraction one-half EndFraction x equals negative StartFraction one-half EndFraction x.
    6·2 answers
  • A car is accelerating at a rate of 35 m/s2 and has a resulting velocity increase from 17 m/s to 26 m/s. How long did it take to
    15·1 answer
  • Help I am confused in this help
    9·2 answers
  • Is it ever the case that the temperature in degrees Fahrenheit is the same as the
    6·1 answer
  • Approximately what portion of the box is shaded blue?
    6·1 answer
  • If the sides of a triangle are AB = 4x + 25, BC = 3x - 2, and AC = 9x - 5, determine the range of possible
    7·1 answer
  • ANSWER PLS TNX I NEED IT TOMMOROW ​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!