Given ΔABC, m∠A = 120°, b = 13 cm, and c= 15 cm. Find the triangle's area. Round to the nearest tenth.

Answers

Answer 1
Refer to the diagram shown below.

m∠A = 120°
b = 13 cm
c = 15 cm

From the Law of Sines, the area of the triangle is
Area = (1/2)*b*c*sin(A)
         = 0.5*13*15*sin(120°)
         = 84.4375 cm²

Answer: 84.4 cm² (nearest tenth)

Given ABC, MA = 120, B = 13 Cm, And C= 15 Cm. Find The Triangle's Area. Round To The Nearest Tenth.
Answer 2

Final answer:

The area of triangle ΔABC with m∠A = 120°, side b = 13 cm, and side c = 15 cm, when calculated using the formula for area ½ bc sin A, is approximately 84.2 cm² when rounded to the nearest tenth.

Explanation:

To find the area of triangle ΔABC with m∠A = 120°, side b = 13 cm, and side c = 15 cm, we will use the formula for the area of a triangle when two sides and the included angle are known:

Area = ½ bc sin A

First, we need to find the sine of angle A, which is sin(120°). Using a calculator, we find that sin(120°) ≈ 0.866. Now, we can plug in the values into the area formula:

Area = ½ × 13 cm × 15 cm × sin(120°)

Area = ½ × 13 cm × 15 cm × 0.866

Area ≈ ½ × 13 cm × 15 cm × 0.866 ≈ 84.225 cm²

Rounding to the nearest tenth, the area is approximately 84.2 cm².


Related Questions

How many ways are there to distribute n distinct balls into r boxes (a box can contain any number of balls, ranging from zero (none) all the way to all n balls)?

Answers

How many ways are there to distribute n distinct balls into r boxes (a box can contain any number of balls, ranging from zero (none) all the way to all n balls.

Which value is the best estimate of 26% of 259?

A: 50
B: 52
C: 65
D: 88

Answers

C
PROOF
just multiply
259×0.26=67.34
26% of 259 is 67.34 so you would pick C. 65 since it's the closest

What is the value of x? Enter your answer in the box.

Answers

The value of x from the equilateral triangle is x = 12 and the side is 38

What is an Equilateral Triangle?

An equilateral triangle is a triangle in which all three sides have the same length.

Let the triangle be ΔABC , and

∠A = ∠B = ∠C = 60° and AB = BC = CA

Given data ,

Let the triangle be represented as ABC

Now , the triangle ABC is an equilateral triangle with

∠A = ∠B = ∠C = 60°

The measure of side AB = 4x - 10

The measure of side BC = 3x + 2

The measure of side AC = 5x - 22

And , the sides of the triangle will also be the same

So ,

Side AB = Side BC = Side CA

Substitute the values in the equation , we get

4x - 10 = 3x + 2   be equation (1)

On simplifying the equation , we get

Adding 10 on both sides of the equation , we get

4x = 3x + 12

Subtracting 3x on both sides of the equation , we get

x = 12

And ,

5x - 22 = 3x + 2

Adding 22 on both sides of the equation , we get

5x = 3x + 24

Subtracting 3x on both sides of the equation , we get

2x = 24

Divide by 2 on both sides of the equation , we get

x = 12

Hence , the value of x is 12

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Which of the following demonstrates the commutative property across multiplication for 2 × 10 × 7        A. 2 + 10 × 7   B. 2 × (10 × 7)   C. 10 ×7 × 2   D. (2 × 10) × 7

Answers

The correct answer is C. 10×7×2

Answer:

Option C is correct

[tex]10 \times 7 \times 2[/tex]

Step-by-step explanation:

Commutative property of multiplication states that you can multiply number in any order.

For example:

[tex]2 \times 3  = 3 \times 2[/tex]

[tex]3 \times 4 \times 5 = 4 \times 5 \times 2[/tex]

Given that:

2 × 10 × 7

By definition Commutative property of multiplication,

⇒[tex]10 \times 7 \times 2[/tex]

Therefore, [tex]10 \times 7 \times 2[/tex] demonstrates the commutative property across multiplication for 2 × 10 × 7

Kate has 6 more dimes than she has nickels. She has a total of $3.60. How many coins does she have in all?

Answers

she has 18 coins in total

Drive-in movies were popular in the 1930s and 1940s. In 1933, there were 100 drive-in theater in the U.S by 1945 there were 2200. What was the percent of increase from 1933 to 1945?

Answers

2,100% increase from 1933 to 1945.
Final answer:

To find the percent of increase in the number of drive-in theaters from 1933 to 1945, subtract the initial number from the final number, divide by the initial number, and multiply by 100, resulting in a 2100% increase.

Explanation:

The question asks how to calculate the percent of increase in the number of drive-in theaters in the U.S. from 1933 to 1945. To find the percent of increase you subtract the original number from the new number divide by the original number, and then multiply by 100 to convert to a percentage.

Original number (1933) = 100 drive-in theatersNew number (1945) = 2200 drive-in theatersPercent of increase = ((2200 - 100) ÷ 100) × 100Percent of increase = ((2100) ÷ 100) × 100 = 2100%

Therefore, the percent of increase from 1933 to 1945 was 2100%.

Using the order of precedence for arithmetic operators, these two formulas will calculate the same result: =22/2*5 =22/(2*5).

Answers

It is false. These two formula will not give the same result.
22/2 x 5 = 11 x 5 = 55
22/(2 x 5) = 22 / 10 = 2.2
So, you see both have different answers.

Find the point where the line crosses the x-axis. y = –5x + 5

Answers

Every point on the x-axis has y-coordinate 0.
Let y = 0, and solve for x.

y = -5x + 5

0 = -5x + 5

5x = 5

x = 1

The line crosses the x-axis at x = 1.

What is the square root of sixty four

Answers

The square root of 64 is 8. 8 x 8 = 64 .

1.The state fair charges and entry fee plus $0.75 per ticket needed for the rides. Sally spent her money only on ride tickets and fair admission. The price of the fair admission is the same for everyone. Use y to represent the total cost and x to represent the number of ride tickets.

(a)Sally spent a total of $31.25 on the entry fee plus 25 ride tickets. How much did Sally pay for the entry fee?
Answer:


(b)Joe has $26 he can spend at the fair on the entry fee and tickets. How many tickets can Joe buy?
Answer:


(c)Let x represent the number of ride tickets purchased and y represent the total cost of fair entry fee and ride tickets. Write an equation to calculate the total cost of the entry fee and fair admission for a person who purchases x tickets.
Answer:

Answers

Final answer:

Sally paid a $12.50 entry fee to the fair. Joe can buy 18 tickets after paying the entry fee with his $26. The equation to represent the total cost of entry fee and tickets based on the number of tickets purchased is y = 12.50 + 0.75x.

Explanation:

(a) We are told Sally spent a total of $31.25 on the entry fee plus 25 ride tickets. Since each ticket costs $0.75, we can multiply 25 tickets by $0.75 to find the total cost of the tickets alone. That is 25 tickets × $0.75 per ticket = $18.75. Subtracting this amount from the total cost of $31.25 gives us the entry fee. The entry fee is $31.25 - $18.75 = $12.50.

(b) Joe has $26 to spend on the entry fee and tickets. We found out earlier that the entry fee is $12.50. Subtracting the entry fee from the total amount Joe has, we get $26 - $12.50 = $13.50. Now, divide this by the cost of one ticket, $0.75, to determine the number of tickets he can buy: $13.50 / $0.75 = 18 tickets.

(c) Let x represent the number of ride tickets purchased and y represent the total cost of fair entry fee and ride tickets. The total cost is the sum of the fixed entry fee and the variable cost of x tickets at $0.75 each. The equation is y = 12.50 + 0.75x.

−3x^ 4−7x+17=0

2


3


4


5

How many complex roots does the polynomial equation have?


(Show work if possible)

Answers

There are 4. if the equation ax^2 +bx +c=0 has 2 roots, then x^4 has 4.

There are two complex roots of the polynomial equation.

What is a polynomial?

They are mathematical expressions involving variables raised with nonnegative integers and coefficients and constants with only operations of addition, subtraction, multiplication, and nonnegative exponentiation of variables involved.

We have been given a polynomial expression as;

[tex]-3x^ 4-7x+17=0[/tex]

Since the Degree of a polynomial is the highest power that its terms (for multi-variables, the power of the term is the addition of the power of variables in that term).

Therefore, the highest power of the given polynomial is 4.

Thus, the Maximum possible roots are 4 but; only 2 are real and 2 are complex.  

Hence, There are two complex roots of the polynomial equation.

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What is the mean of the set of numbers?

-11, 22, -2, -3

Answers

add all the numbers and then divide by how many there are in the set to find the mean so

-11+22+-2+-3=6

6÷4=1.5

so 1.5 would be the mean

Hope this helps!

In order to find the mean, add up all of the numbers and divide the sum by the amount of the numbers.  So, -11+22+(-2)+(-3)=11-2-3=6.  Now, divide 6 by 4, (the amount of #s).  6/4=3/2 or 1.5.  So 1.5 is the mean of the set of numbers.

Hope this helped!

Suzanne has a student loan balance of $25,904 with an average interest rate of 6.8 percent. Use the student loan repayment calculator (Links to an external site.)Links to an external site. to determine how much her monthly payment be if she selects the standard repayment option.

Answers

Since the problem is requiring us to use the loan repayment calculator and here is what the calculator gave:


Loan Balance: $25,506.00


Adjusted Loan Balance: $25,506.00


Loan Interest Rate: 6.80%


Loan Fees: 0.00%


Loan Term: 10 years


Minimum Payment: $0.00


Monthly Loan Payment: $293.52


Number of Payments: 120 months


Cumulative Payments: $35,223.07


Total Interest Paid: $9,717.07


It is projected that you will need an annual salary of a minimum $35,222.40 to be capable to have enough money to repay this loan. This approximation assumes that 10% of your gross monthly income will be keen to repaying your student loans. This resembles to a debt-to-income ratio of 0.7. If you use 15% of your gross monthly income to repay the loan, you will need an annual salary of only $23,481.60, but you may experience some financial difficulty. This corresponds to a debt-to-income ratio of 1.1.


Find the 5th term of a sequence represented by f(n) = 5n-2

Answers

Literally just plug in 5 for f(n) to get f(5)=5*5-2=25-2=23
Since you want to know what the 5th term, you substitute 5 for n and solve: f(n) = 5n-2 
          5n - 5
          5(5) - 5            25 - 5
 f(n) = 5

A quadratic factor that cannot be factored further as a product of linear factors containing real numbers is said to be

Answers

Answer:  "irreducible over the reals" .
____________________________________
Ireeducable over the reals

The area of a square boxing ring is 436 square feet. What is the approximate length, in feet, of one side of the boxing ring?

4ft

21ft

54ft

109ft

Answers

Squaring 436 gives you 20.8...therefore, approximately, one side is 21 ft

The area of the square is the square of the side thus the approximate length of the square will be 21 ft so option (B) will be correct.

What is a square?

A square is a geometrical figure in which we have four sides each side must be equal and the angle between two adjacent sides must be 90 degrees.

Area of square = Side²

As per the given question,

The area of a square boxing ring is 436 square feet.

It is known that,  

Area = Side²

Side² = 436

Take square root on both sides,

Side = √436 = 20.88 ≈ 21 ft

Hence "The area of the square is the square of the side thus the approximate length of the square will be 21 ft so option (B) will be correct".

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Lillian wants to buy a digital camera for $143.00. She baby-sits for $2.75 an hour. So far she has worked a total of 30 hours. How many more hours does she need to work to have enough to buy the camera?

Answers

Twenty-two hours I believe..

Given the function f(x) = 2(x + 6), find x if f(x) = 22. PLEASE ANSWER DONT PLAY I REPORT NO GAME PLAYING PLEASE

Answers

2(x + 6) = 22
x + 6 = 11
x = 5

check
f(5) = 2(5 + 6) = 2(11) = 22

Answer:

The correct answer is 5

Step-by-step explanation:

Put the numbers in order from least to greatest.
17
, 4.12, 41
10
, 42
15
A) 17
, 4.12, 41
10
, 42
15

B) 41
10
, 17
, 4.12, 42
15

C) 41
10
, 4.12, 17
, 42
15

D) 42
15
, 4.12, 17
, 41

Answers

none of the answers are correct because it would be 4, 10, 12, 17, then 41

12/25 x 5/18 !!!!!!!!!!

Answers

To multiply fractions together you times the top and bottom numbers together and simplify:
(12*5)/(25*18) = 60/450

Then to simply you find a common number, the largest number you can divide into 60 and 450 and still be left with a interger (whole number), in this case it is 30. Then you divide the top and bottom by it:
(60/30)/(450/30) = 2/15

Hope this helps! :)

Value of 12/25 x 5/18 in the simplest form is 2/15.

What is Simplification?

Simplifying procedures is one way to achieve uniformity in job efforts, expenses, and time. It reduces diversity and variation that is pointless, harmful, or unneeded. Parenthesis, exponents, multiplication, division, addition, and subtraction are all referred to as PEMDAS. The order of the letters in PEMDAS informs you what to calculate first, second, third, and so on, until the computation is finished, given two or more operations in a single statement.

Given a equation 12/25 x 5/18 we need to simplify this

Using PEMDAS

12/25 * 5/ 18

=> (12 * 5)/ 25 *18

=> 2 / (5 * 3)

=> 2/15

Therefore, Value of 12/25 x 5/18 in the simplest form is 2/15.

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The perimeter of a scalene triangle is 14.5 cm. The longest side is twice that of the shortest side. Which equation can be used to find the side lengths if the longest side measures 6.2 cm?

Answers

This question has already been solved by another person. I'll list their answer here. 

Perimeter is the sum of all sides of a polygon. For this case, the perimeter is expressed as: P=a+b+c. It has been said that the longest side is twice that of the shortest side. Let's assume that a is the longest side and b is the shortest side. So, the equation for the shortest side is, 

6.2 = 2c
c = 3.1 

14.5 = 6.2 + 3.1 + b
14.5 = 9.3 + b

I take no credit for this answer. It was solved by Taskmasters. 

What is equal to 3log2 + log4

Answers

Log Rule #1:  log(x*y) = log(x)+log(y)
Log Rule #2:  log(x^y) = y*log(x)

Using those log rules, we can say...

3*log(2) + log(4) = log(2^3) + log(4)  <-- use log rule #2
3*log(2) + log(4) = log(8) + log(4)     <-- simplify 2^3 to get 8
3*log(2) + log(4) = log(8*4)               <-- use log rule #1
3*log(2) + log(4) = log(32)                <-- simplify 8*4 to get 32

So the expression simplifies to log(32)

Write the equation of a line given two points kuta

Answers

True. By using the two points to find the slope and then point slope form

Which function represents the graph of f(x)=|2x| after it is translated 5 units to the left?

Answers

Answer:

Here are the options to the questions:  

a.) g(x)=|2(x−5)|

b.) g(x)=|2(x+5)|

c.) g(x)=|2x+5|

d.) g(x)=|2x−5|

The answer is b.) g(x)=|2(x+5)|

Step-by-step explanation:

The function F(x) = |2x| has the vertex at point (0,0)

The rule of translation is (x,y) -------- (x - 5, y)

The translation of the point (0,0)is equal to

(x,y) -------- (0 - 5,0)

(x,y) -------- (-5,0)

The function g(x) has the vertex at point (-5,0)

So therefore, the function g(x) is equal to g(x)=|2(x+5)|

Identify the properties needed to prove n + n + n + 2n = 5n.

Answers

The properties needed to prove n + n + n + 2n = 5n are: Distributive Property of Multiplication, Associative Property of Addition, and Commutative Property of Addition.

What is Commutative Property of Addition?

The commutative property of addition states that when two or more numbers are added, the order in which they are added does not affect the sum. In other words, for any two numbers a and b, a + b = b + a.

The properties required to prove n + n + n + 2n = 5n are as follows:

Distributive Property of Multiplication: This property states that a(b + c) = ab + ac. In this case, we can apply the distributive property to 2n, which gives us 2n = n + n.

Associative Property of Addition: This property states that (a + b) + c = a + (b + c). We can use the associative property of addition to group the n's together and the 2n's together, which gives us (n + n + n) + (2n) = 5n.

Commutative Property of Addition: This property states that a + b = b + a. We can use the commutative property of addition to rearrange the terms in the equation, which gives us (n + n + n + 2n) = (n + n + 2n + n) = 5n.

Thus, these properties can be used.

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Final answer:

To prove n + n + n + 2n = 5n, we use the commutative and associative properties of addition to group and combine like terms, then apply the distributive property to show that the sum equals 5n.

Explanation:

To prove the equation n + n + n + 2n = 5n, we need to use properties of equality and algebraic manipulation. First, we apply the commutative property of addition, which allows us to rearrange the terms in any order without changing the sum.

This property isn't strictly necessary here, as all terms involve 'n', but it's a useful property in general for manipulating equations.

Next, we utilize the associative property of addition, which allows us to group numbers in any combination when adding. In this specific case, we group all the 'n' terms together:

(n + n + n) + 2n

Using the associative property, we can simplify the equation further by combining like terms:

3n + 2n = 5n

Lastly, we apply the distributive property, which in this case shows that multiplying the coefficient (being 1 for n in this example) by the number of times 'n' appears (3 for the first set and 2 for the second set), gives the same result as adding 'n' that many times.

There are 64 pretzels in a 16 ounce bag of chocolate covered pretzels. how many ounces does each pretzel way?

Answers

Hey You!

Simply Divide:

16/64 = 0.25

So, Each Pretzel Weighs 0.25 Ounces.

Simplify m - {n - [p + (m + n - p)]}.

0
2m
-2m + 2p

Answers

m - {n - [p + (m + n - p)]}.
= m - {n - [p + m + n - p]}
= m - {n - m - n}
= m + m
= 2m

answer
2m

Answer:To simplify the following expression, we first simplify the terms inside the parenthesis from inner going outer. The first one is [p - (m + n - p)] equal to p - m- n + p = 2p - m - n. Then, n +2p - m - n equal to 2p -m. Then, m -  2p + m equal to 2m -2p. Answer is B

Step-by-step explanation:

HELP ME WITH MATH PLEASEEEEEEEEEEEEE

Answers

(1/2)^2x = 32

(1^2x)/(2^2x) = 32

1^2x = 1

1/2^2x = 32

32 = 2^5

2^-2x = 2^5

take out the base, (since they are the same. You are left with...)
-2x = 5

-2x = 5 is your answer in this case

hope this helps :D

PLS HELP!!! WILL MAKE BRAINLIEST!!!

Answers

Calculation with Distribution 
First, start by distributing the six by each fraction. (Multiply 6 by each number inside the parenthesis) 
6*1/2= 3
6*2/3= 4
6*3/4= 4 1/2
Then add all of the solutions together. 
3+4+4.5= 11 1/2

Calculation without Distribution 
Add all the fractions together then multiply by 6.
1/2+2/3+3/4= 1 11/12
1 11/12* 6= 11 1/2

Hopefully, I could help!

Jamal is driving in Europe and finds that he has to drive 56 kilometers until he arrives at his destination. If 1 km = 0.62137 mi, about how many miles does Jamal have left on his journey?

Answers

By hypothesis, 1 km = 0.62137 mi.
Jamal has to drive 56 kilometers until he arrives at his destination, so he needs to drive 56*0.62137 = 34.7967 mi.

So Jamal have 34.7967 miles left.

Hope this helps! :)
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