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
CaHeK987 [17]
3 years ago
11

PLEASE HELP ME THANK YOU. ALSO PLEASE INCLUDE EXPLANATION

Mathematics
1 answer:
11Alexandr11 [23.1K]3 years ago
6 0

Given

the lengths of the 3 sides of a triangle

Find

the angle opposite the longest side

Solution

Strategy: make use of the Law of Cosines, which relates an angle and the three sides of a triangle.

... a² = b² + c² -2bc·cos(A)

... cos(A) = (b² + c² - a²)/(2bc) . . . . . . . solve for cos(A)

... A = arccos((b² + c² - a²)/(2bc))

Fill in the given values and evaluate.

... A = arccos((55² + 50² - 90²)/(2·55·50)) = arccos(-2575/5500)

... A ≈ 117.9°

You might be interested in
Which expression is equivalent to 3x/x+1 divided by x + 1?
kiruha [24]
I hope this helps you.

7 0
3 years ago
Read 2 more answers
The function f(x) = 3,267(1 + 0.02)* represents the amount of money in a savings account where x represents time in years. What
andreyandreev [35.5K]

Answer:

C .The initial amount of money placed in the savings account

Step-by-step explanation:

f(x) = 3,267(1 + 0.02)^x

This is in the form

y = a b^x

where a is the initial amount

b is the growth rate

x is the time

3267 is the initial amount

1.02 is the growth rate, so it grows by .02 or 2 percent

and x is the time

6 0
3 years ago
Read 2 more answers
F(x)=x^4-6x^3+5x^2+24x-36 <br><br>what are the x-intercepts of f(x)?
Art [367]

(-2, 0), (2, 0), and (3, 0)

:)

6 0
3 years ago
A fire burned a square - shaped forest 14mi on a side the area is ?
Tpy6a [65]
A square has all sides of the same length. This means that the length and width are both 14 miles. The area of a square is Length times width, or 14 times 14. This comes out to be 196 miles squared
8 0
3 years ago
Read 2 more answers
A cleaning company charged $125 to clean a 2500 square foot house. The same company charged $146 to clean a 3200 square foot hou
HACTEHA [7]

Answer:

The cost is y = $185

Step-by-step explanation:

Let us have points spelt out here

(2500,125) and (3200,146)

The general form of a straight line equation is;

y = mx + b

where m is slope

So to calculate the slope in this case, we have

m = (146-125)/(3200-2500)

m = 21/700 = 0.03

So we have the equation as

y = 0.03x + b

To get b, we use any of the two points

Let us use (2500,125)

So we have

125 = 0.03(2500) + b

125 = 75 + b

b = 125-75

b = 50

So the complete equation of the line is;

y = 0.03x + 50

So here, we want to find the cost of a house with 4500 square feet

simply substitute 4,500 for x

y = 0.03(4500) + 50

y = 135 + 50

y = $185

4 0
3 years ago
Other questions:
  • The price of a jet ski was marked up 15% over the previous year's model. if the previous year's model sold for $500, what is the
    7·1 answer
  • (p-3)+(p-7) what is the answer
    6·1 answer
  • 830000 in scientific notation
    8·1 answer
  • True or false ? Euclidean geometry is based on the postulates of Euclid
    15·1 answer
  • Jill made scarves and then sold them for $15 each. If Jill spent $150 to make all the scarves, how many scarves need to be sold
    7·2 answers
  • Consider the sequence of steps to solve the equation: 3(x − 4) + 5x = 9x − 36 Given ⇒ 3(x − 4) + 5x = 9x − 36 Step 1 ⇒ 3x − 12 +
    11·1 answer
  • Look at ZBDC and ZADB in the image below.
    11·1 answer
  • What is the value of 2 in the figure shown below?
    12·1 answer
  • Please help me.
    7·1 answer
  • What percent of 96 is 367​
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!