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
emmainna [20.7K]
2 years ago
5

PLEASE HELP ME PLEASE!!

Mathematics
1 answer:
Anna35 [415]2 years ago
8 0

Step-by-step explanation:

in such a case, where we have all the sides and need angles, the best tool is the extended Pythagoras (for general triangles and not just for right-angled ones) :

c² = a² + b² - 2ab×cos(C)

c is the side opposite of angle C.

the side opposite of B is CA.

so, we have

220² = 100² + 160² - 2×100×160×cos(B)

48,400 = 10,000 + 25,600 - 32,000×cos(B)

12,800 = -32,000×cos(B)

cos(B) = -12,800/32,000 = -0.4

B = 113.5781785...° ≈ 114°

You might be interested in
This is an arithmetic sequence -4, 1, 6, 11...<br> For y = mx + b, m is <br> and b is
Liono4ka [1.6K]

Answer:

it is an arithmetic sequence

m is slope

b is y-intercept

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
PLEASE HELP I AM BEGGING YOU!!! I WILL GIVE BRAINLIEST AND EXTRA POINTS PLEASEEEEEEEEEEEEEEEEEE!!!!!!!
san4es73 [151]

Answer:

1. 31

2. -40

3. 28.5

4. 75

5. 6

6. -24

7. -34

8. 68

9. 8

10. 26

Step-by-step explanation:

I tried to do the best I can I hope this helps! :))

4 0
3 years ago
$7230 for 3.25% in 12 years
IceJOKER [234]

$2,819.70 is the answer

You multiply .0325×12×72.30

6 0
3 years ago
Point Bis the midpoint of AC AB=2x and AC=3x+20.<br> What is the value of x?
horsena [70]

Answer:

So x = 20

Step-by-step explanation:

AB + BC = AC sum of a segment is sum of its pieces

AB + AB = AC B is the midpoint, so AB = BC

2x + 2x = 3x + 20 putting in for AB (twice!) and AC

4x = 3x + 20 collect like terms

x = 20 subtract 3x on both sides.

Read more on Brainly.com - brainly.com/question/10838483#readmore

7 0
3 years ago
. Your class is collecting bottled water for a service project. The goal is to collect 300 bottles of water. On the first day, M
kobusy [5.1K]
6x12=72
6x3=18
72+18=90
300-90=210
210 bottles
3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the slope of the line that contains the points (7, -3) and (-7, 4)?
    5·2 answers
  • Y=3x+2 please graph this line
    7·1 answer
  • Please answer fast
    14·1 answer
  • Current scientific evidence shows that the earth is:
    14·2 answers
  • How do u write 4 1/4 in simplest form and not in decimals I haven't learned that yet .
    10·2 answers
  • BBB!!!!20 POINTS!!! ASAP. Two friends collect aluminum cans for a recycling project. One friend fills 23 bags with 36 cans each,
    13·1 answer
  • Please can someone help me with this question and a few more.. I will give brainliest and full ratings.
    14·2 answers
  • BEST ANSWER GETS BRANLIEST AND 100 POINTS<br><br><br> Simplify (√3+√48)(√2−√5).
    13·2 answers
  • In each turn of a game you toss two coins. If 2 heads come up, you win 2 points and if 1 head comes up you win one point
    10·1 answer
  • What is the metric system based on
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!