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
Novay_Z [31]
2 years ago
14

Please help. ASAP. This is so confusing.

Mathematics
1 answer:
Anni [7]2 years ago
3 0

1. right triangle?

-> c²= g²+b²

c²= 20²+21²

c²= 841

c=V841

c=29

-> triangle BCG is right

2.

cos B= 20/29

tan B= 21/20

sin B= 21/29

sin G= 20/29

cos G= 21/29

tan G= 20/21

You might be interested in
The ratio can depict a part of a whole, or less than 100%. The ratio can also depict more than
charle [14.2K]

Answer:

100% =200

divide both by 100 to find 1%

1%= 2

multiply by 5 to find 5%

5%=10

200=100%

divide both by 200 to find 1

1=0.5%

multiply both by 150 to find percentage

150=75%

3 0
3 years ago
A Web music store offers two versions of a popular song, The size of the standard Version is 2.7 megabytes (MB), The size of the
Ratling [72]
There were a total of 400 downloads of the 4.4MB and 690 downloads of the 2.7MB
6 0
3 years ago
Use technology to find the line of best fit for the following data.
Yakvenalex [24]

Answer:

what following data

Step-by-step explanation:

4 0
2 years ago
* Some amount of billiard balls were arranged in an equilateral triangle. And 5 balls were extra. When the same set of billiard
Agata [3.3K]

Lets say billiard balls are arranged in rows to form an equilateral triangle, then the first row consists of 1 ball, second row consists of 2 balls, and third row consists of 3 balls,  and so on. So there must be n balls in the n^{th} row.  

So, the total number of balls that forms the equilateral triangle with n rows is:  

1+2+3+4+5+....+n=\frac{n(n+1)}{2}

Let x_1 and x_2 be the total number of balls in the first and second arrangements respectively.  

Then,

x_1=\frac{n(n+1)}{2} +5

It has been said that there were 11 lesser balls in the second arrangement:  

x_2=\frac{1+(n+1)}{2} \times (n+1)-11=(n+1) \times \frac{(n+2)}{2} -11

Since, x_1=x_2

\frac{(n+1)}{2} \times n+5=\frac{(n+2)}{2} \times(n+1)-11

multiplying both the sides by 2

(n+1)\times n+10=(n+2)(n+1)-22

n+n^2=n^2+n+2n+2-22-10

2n=22+10-2

2n=30

n=15

Therefore,

x_1=\frac{(n+1)}{2}\times n+5=\frac{15+1}{2}  \times 15+5=125

So, there were 125 balls at the set.

4 0
3 years ago
Read 2 more answers
The difference of two numbers is 20, and the difference of their squares is 800. What is the sum of the two
Katarina [22]
40 is your answer! let me know if you need more help!
6 0
3 years ago
Read 2 more answers
Other questions:
  • Hello. does anyone need help with math, i would be more than glad to help
    11·2 answers
  • Travis writes 72=9×8. Is he correct? Explain at least 2 strategies Travis can use to check his work.
    14·1 answer
  • What is 8.125 to the nearest cent
    5·2 answers
  • Jacqueline is checking her bicycle’s wheel. The wheel has a radius of 20 cm, and its center is 51 cm above the ground. Jacquelin
    14·1 answer
  • How to solve 11(K-1)=7(K-Y)
    14·1 answer
  • How many terms are in the expression?<br><br> 1.4c + 11.4 - 2c - 7.3c + 6.5
    8·1 answer
  • Help me with 16 please
    11·1 answer
  • Answer 4 some free pointz
    7·2 answers
  • Which situation best represents the equation below x-15=60
    8·2 answers
  • How do these numbers compare?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!