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
kupik [55]
3 years ago
13

Which option equals tan 40°? Select all that apply.

Mathematics
1 answer:
Sonbull [250]3 years ago
4 0
Answers:
(sin40)/(cos40) and
(cos50)/(sin50)
You might be interested in
Emily buys a dress for ?48 and adds 25% onto the price before putting it into her shop window what price does he price tag say i
Maurinko [17]

Answer:

$60

Step-by-step explanation:

$48 x 25% = $12

$48+$12 =$60

6 0
3 years ago
(X^4)-(45x^2)+324 what are the zeroes? And how many turning points?
dmitriy555 [2]

Zeroes:

We must solve

x^4-45x^2+324=0

To do so, we define the auxiliary variable t=x^2. The equation becomes

t^2-45t+324=0

The quadratic formula yields the solutions

t=9,\quad t=36

Substituting back t=x^2 gives

x^2=9 \iff x=\pm 3,\quad x^2=36 \iff x=\pm 6

So, the zeroes are -6, -3, 3, 6.

Turning points:

Turning points are points where a function stops being increasing to become decreasing, or vice versa. Since functions are increasing when their first derivative is positive and decreasing when it's negative, turning points are points where the first derivative is zero.

We have

f(x)=x^4-45x^2+324 \implies f'(x)=4x^3-90x

If we set the derivative to be zero, we have

4x^3-90x=0 \iff x(4x^2-90)=0

So, the derivative is zero if x=0 or

4x^2=90 \iff 2x^2=45 \iff x^2=\dfrac{45}{2}\iff x=\pm\sqrt{\dfrac{45}{2}}

6 0
3 years ago
Help ASAP<br><br> A)360<br><br> B)50<br><br> C)140
viktelen [127]
50

there’s no way x is 360 or 140
3 0
3 years ago
Read 2 more answers
Three defective electric toothbrushes were accidentally shipped to a drugstore by the manufacturer along with 17 non-defective o
PSYCHO15rus [73]
Sleep nxbd ns jus juz b hb s hs s shs sh
7 0
3 years ago
10.55 = as a simplest form​
Katarina [22]

Answer:

10 11/20

as a fraction.

Step-by-step explanation:

.55 is 55/100 but can be simplified. 55 and 100 can be divided by 5 so it goes to 11 and 20

5 0
3 years ago
Other questions:
  • 121/2020
    9·1 answer
  • Maya spent 40% of her savings on a bike it cost her $85 how much money does she have left
    7·1 answer
  • A population of bacteria doubles every 12 hours. Initially, the population of bacteria is 80.
    7·1 answer
  • Hello please help i’ll give brainliest
    15·1 answer
  • Jeff bought 15 granola bars for $30. How much does it cost per granola bar? $
    9·2 answers
  • Find three consecutive multiples of four such that three times the first one plus four times
    9·1 answer
  • 10
    12·1 answer
  • Which equation is y = (x + 3)2 + (x + 4)2 rewritten in vertex form?
    6·2 answers
  • 75 is what percent of 150
    13·2 answers
  • Given the following information, calculate the
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!