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
EastWind [94]
3 years ago
13

ASAP Can someone help with this problems just I only need which formula do I used I just need for 4,5 and 6 just tell me the for

mulas for Law of Cosines

Mathematics
1 answer:
Sveta_85 [38]3 years ago
3 0

Explanation:

The formula for law of cosines is:

a^{2} = b^{2} + c^{2} - 2bc(cosA)

This is written at the top of your paper.

The angle is substituted where the capital A is. The side opposite to the angle is the angle name's lowercase. The two other sides are b and c.

Substitute all the information you know, then isolate the variable that you do not know.

When your formula is rearranged to look like this:

\frac{a^{2} - b^{2} - c^{2}}{- 2bc} = (cosA)

Solve the left side and punch into your calculator:

cos⁻¹(left side) to find the angle A.

You might be interested in
What is the excluded value?<br><br> 0<br><br> 1/2<br><br> 1
nekit [7.7K]

Answer:

excluded value is 1/2

Step-by-step explanation:

The excluded value is the value when the denominator is equal to zero

1 -2x =0

Subtract 1 from each side

-2x = -1

Divide by -2

-2x/-2 = -1/-2

x = 1/2

The excluded value is 1/2

7 0
3 years ago
Use a computer algebra system to draw a direction field for the differential equation y' = 3y^3 − 12y. Get a printout and sketch
Diano4ka-milaya [45]

Answer: simplest reason is that Infinity is not a number, it is an idea.

So 1∞ is a bit like saying 1beauty or 1tall.

Maybe we could say that 1∞= 0, ... but that is a problem too, because if we divide 1 into infinite pieces and they end up 0 each, what happened to the 1?

In fact 1∞ is known to be undefined.

But We Can Approach It!

So instead of trying to work it out for infinity (because we can't get a sensible answer), let's try larger and larger values of x:

graph 1/x

x 1x

1 1.00000

2 0.50000

4 0.25000

10 0.10000

100 0.01000

1,000 0.00100

10,000 0.00010

Now we can see that as x gets larger, 1x tends towards 0

We are now faced with an interesting situation:

Step-by-step explanation:

8 0
3 years ago
Write the following equation in standard form: 2/3 a+5a^3 +4a^4 -2a^5
ycow [4]

Answer:

-2a^5+4a^4+5a^3+2/3a ---- apex

Step-by-step explanation:

3 0
3 years ago
suppose you deposit $2,475 in a savings account that earns 6.25% simple interest per year. How much simple interest would be ear
Nikolay [14]

$116.02 interest will be earned in 9 months

Step-by-step explanation:

The formula for simple interest is given by:

I = Prt

Here

P is the initial amount

r is the interest

t is the time measured in years

Given

P = $2475

r = 6.25% = \frac{6.25}{100} = 0.0625

t = 9 months

Converting time into year by dividing by 12

t = \frac{9}{12}\ years = 0.75\ year

Putting the values in the formula

I = 2475 * 0.0625 * 0.75\\I = 116.0156

Rounding off to nearest hundredth

I = $116.02

Hence,

$116.02 interest will be earned in 9 months

Keywords: Interest, simple interest

Learn more about simple interest at:

  • brainly.com/question/774670
  • brainly.com/question/763150

#LearnwithBrainly

6 0
3 years ago
A rectangular prism has a length of 4.5 cm, a width of
STALIN [3.7K]

Answer:112.5

Step-by-step explanation: multiply then all together length then width them height

6 0
4 years ago
Read 2 more answers
Other questions:
  • What is the remainder in the synthetic division problem below?
    7·2 answers
  • PLEASE HELP ME PLEASE I BEG YOU
    8·2 answers
  • James can run 4/5 of a mile in 2 minutes how far can he run in 1 minutes?​
    9·1 answer
  • Alex's friend Pablo comes up with an exact equation to find out how many bags he needs. Use his equation
    7·1 answer
  • Simplify the expression. r-8​
    5·2 answers
  • Which of the following describes how to translate the graph of y = |x| to obtain the graph of y = |x + 1| - 2?
    15·2 answers
  • Write the word sentence as an inequality.
    6·1 answer
  • 520% of 100 Show Your Work
    7·1 answer
  • Write the standard form of the equation through: (-5, 4), parallel to y=-6/5x + 2
    15·1 answer
  • in a marathon race (42.195 km), the winner’s time is 2 hours, 13 minutes, and 9 seconds, while the second-place time is 2 hours,
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!