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
DIA [1.3K]
2 years ago
7

Can someone explain this to me please ​

Mathematics
1 answer:
Temka [501]2 years ago
6 0
Sin of an angle is opposite leg divided by hypotenuse. 

sin B= 12 / 13

tan of an angle is opposite leg divided by adjacent leg

tan B= 12 / 5

cos of an angle is adjacent leg divided by hypotenuse

cos B= 5 / 13
You might be interested in
PLS HELP ASAP THANKS ILL GIVE BRAINLKEST PLS THANKS PLS ASAP PLS PLS HELP ASAP THANKS
Alenkinab [10]

Answer:

So ofc it's third

Step-by-step explanation:

You'll need to use the Pythagorean theorem:

a²+b²=c²

36² + 15² = c²

1296 + 225 = c²

1521 = c²

\sqrt{x} 1521\\ = 39

5 0
2 years ago
Read 2 more answers
HURRY IM TIMED!! which inequality is represented by this graph?
antiseptic1488 [7]

Answer:

x<6 this is the answer because the circle is hallow (not including) and going left (less than)

7 0
3 years ago
Read 2 more answers
Plss help me TT
Marina CMI [18]

a. There are 0 or 2 real positive roots for the equation and

b. There are 0 or 2 real negative roots for the equation.

<h3>What is the Descartes'rule of sign?</h3>

Descartes' rule of sign states that

  • The number of real positive zero of a polynomial f(x) is the number of sign changes of the coefficients of f(x) or an even number less than the number of sign changes of the coefficients of f(x)
  • The number of real negative zero of a polynomial f(x) is the number of sign changes of the coefficients of f(-x) or an even number less than the number of sign changes of the coefficients of f(-x)

<h3>How to find the number of possible positive and negative roots are there for the equation?</h3>

Given the equation 0 = −8x¹⁰ − 2x⁷ + 8x⁴ − 4x² − 1, writing it as a polynomial function, we have f(x) = −8x¹⁰ − 2x⁷ + 8x⁴ − 4x² − 1

<h3>a. The number of positive roots</h3>

So, to find the number of positive roots, we find the number of sign changes of the polynomial f(x).

So, f(x) = −8x¹⁰ − 2x⁷ + 8x⁴ − 4x² − 1

Since f(x) has coefficients -8, -2, + 8, -4, -1, there are two sign changes from -2 to + 8 and from + 8 to -4.

So, there are 2 or 2 - 2 = 0 real positive roots.

So, there are 0 or 2 real positive roots for the equation.

<h3>b. The number of negative roots</h3>

So, to find the number of negative roots, we find the number of sign changes of the polynomial f(-x).

So, f(-x) = −8(-x)¹⁰ − 2(-x)⁷ + 8(-x)⁴ − 4(-x)² − 1

= −8x¹⁰ + 2x⁷ + 8x⁴ − 4x² − 1

Since f(x) has coefficients -8, +2, + 8, -4, -1, there are two sign changes from -8 to + 2 and from + 8 to -4.

So, there are 2 or 2 - 2 = 0 real negative roots.

So, there are 0 or 2 real negative roots for the equation.

So,

  • There are 0 or 2 real positive roots for the equation and
  • There are 0 or 2 real negative roots for the equation.

Learn more about Descartes' rule of sign here:

brainly.com/question/28487633

#SPJ1

8 0
1 year ago
Multiply 2/3 by 42, and then multiply that product by 10
Mrac [35]

Answer:

140 is the answer

Step-by-step explanation:

2/3 of 42 is 14 multiplied by ten is 140

Hope this helps ;)

7 0
2 years ago
Divide 10 by 5, the multiply q by the result
polet [3.4K]

Answer:

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Can someone please help me with my math problem?
    12·1 answer
  • Kenny reads 4/9 page in 3/5 minute , kenny's unit rate is page per minute
    9·2 answers
  • Can anybody help out this math question it’s about graph please
    11·1 answer
  • What is the inverse of the function f(x) = 2x – 10?
    13·2 answers
  • Please help! 15 points! <br><br> Btw, you cannot answer in the file.....that's just a pic.....
    6·1 answer
  • See attachment. PLEASE HELP ASAP!!!!! Thank you!!!
    13·1 answer
  • 3. A pair of sneakers that costs $60.50 is on sale for 20% off. Find the DISCOUNT. (5 Points) $20 O $12.01 $12.10 $48.40​
    8·2 answers
  • Find the total surface area of this cuboid.<br> 5 cm<br> 4 cm<br> 6 cm
    9·1 answer
  • Mr. Rijo bought 49 bags of soil one week and 28 bags of soil the next week. Which expression correctly applies the distributive
    13·1 answer
  • Please help me I will give brainliest
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!