Answers
=============================================
Work Shown:
Apply the law of cosines
a^2 = b^2 + c^2 - 2*b*c*cos(A)
10^2 = 13^2 + 11^2 - 2*13*11*cos(A)
100 = 290 - 286*cos(A)
100-290 = -286*cos(A)
-190 = -286*cos(A)
190 = 286*cos(A)
286*cos(A) = 190
cos(A) = 190/286
A = arccos(190/286)
A = 48.368620460647
A = 48
Make sure your calculator is in degree mode.
Related Questions
Find the midpoint M of the line segment joining the points: C = (2, 7) and D= (-8, –5)
Answers
Answer:
the answer is (-3, 1)
luiweytie74gtewkgfrewiurhge
Step-by-step explanation:
word word word word
find the area of the right triangle with a base of 38cm and the height of 26cm
a. 128cm
b.247cm
c.324cm
d.494cm
Answers
Area for a triangle solution is 1/2(b•h)
Insert each number!
1/2(38•26)
Area = 494cm
At Hearth and Home the price for 2 candles is $8.00. At Homeland the price for 3 candles is $15.00. How many dollars will you save if you buy 6 candles from Hearth and Home instead of Homeland?
Answers
Answer:
answer is 6
Step-by-step explanation:
hard to explain but you have to find the price of 1 candle
0.2(3a + 6b) use distributive property
Answers
Answer:
0.6 a + 1.2 b
Step-by-step explanation:
If you divide a polynomial f(x) by the factor (x - 4), the remainder will be equal to f(-4). true or false ?
Answers
Answer:
FALSEStep-by-step explanation:
Given the polynomial f(x) divided by x-4
To check whether the remainder will be equal to f(-4), we need to get whether the value of x is -4 if we set x-4 to zero as shown;
x- 4 = 0
Add 4 to both sides
x - 4 + 4 = 0+4
x = 4
Since the value of x is 4 not -4 hence the remainder will NOT be equal to f(-4). The answer is false
If r= 1 and 0 = 7, what is the approximate arc length?
20
A. 3.665 units
B. 3.927 units
C. 1.167 units
D. 4.189 units
SUBMIT
Answers
The approximate arc length is,
⇒ s = 3.665 units
What is mean by Circle?The circle is a closed two dimensional figure , in which the set of all points is equidistance from the center.
Since, We know that;
The arc length (s) is given by,
⇒ s = r·θ
Here, We have;
r = 1
θ = 7π / 6
Hence, We get;
s = 1 × 7π/6
s = 3.665 units
Thus, The approximate arc length is,
⇒ s = 3.665 units
Learn more about the circle visit:
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Some people advise that in very cold weather, you should keep the gas tank in your car more than half full. Lou's car had 6.8 gallons in the 15-gallon tank on the coldest day of the year. Lou filled the tank with gas that cost $3.90 per gallon. How much did Lou spend on gas?
Answers
Answer: You have the following information given in the problem above:
- Lou filled the tank with gas that cost $3.80 per gallon.
- Lou's car had 5.9 gallons in the 13-gallon tank.
2. Therefore, if he filled the tank, you can calculate the total amount of money Lou spent, by subtracting 13 gallons and 5.9 gallons and multiplying the result by $3.80.
3. Then, the result is:
$26.98
write 5,020,700 in expanded form
Answers
Solution: 5,000,000 + 20,000 + 700
5,000,000+20,0000+700
D
Question 16
A piece of cardboard measures 24 inches on each side. Congruent squares on all 4 corners will be cut out to fold the cardboard into a pizza box for Tony's Pizza.
Answers
Answer:
you search on doutnut ok dear
please answer asap I really need it til 2.00 p.m, A sporting good store manager was selling a ski set for a certain price. The manager offered the markdowns shown, making theone-day sale price of the ski set $321.
Find the original selling price of the ski set ?
Answers
Answer:
the ski original price is 641
Step-by-step explanation:
Answer:
Step-by-step explanation:
you cant find the answer without knowing what discount was given sorry
Please help me I appreciate it thank you so much
Answers
Answer:
yes
Step-by-step explanation:
math
what is the common denominater of 1/5 and 7/10
Answers
Answer:
10 010 10 10 10 10 101 01 mo1
Step-by-step explanation:
pleaseee hellppp meeee
Answers
Answer:
The y-intercept is -3.2
Which stalement correctly describes the diagram?
Answers
triangel b is a reflection of triangle a the x-axis triangle c
Which phrase represents the meaning of the symbol ?
O less than
O equal to
O greater than
O divided by
Answers
Answer:
C. Greater than.
Step-by-step explanation:
Answer:
greater than
OR
C.
If isosceles triangle ABC has a 130° angle at vertex B, which statement must be true?
O mZA= 15° and mzC= 35
O mZA+ mZB = 155°
O mZA+ mzC = 60
OMZA= 20° and m2C=30
Answers
Answer:
Option B m<ZA+m<ZB = 155° is correct option.
Step-by-step explanation:
We know that sum of angles of triangle is equal to 180°
And Isosceles triangle, 2 angles are same
So, let Angle 1 = x
Angle 2 = x
Angle 3 = 130°
Finding values of angle x
x+x+130=180
2x=180-130
2x=50
x=25
So, Angle 1 = 25 °
Angle 2 = 25°
As, angle B is greater than 90°, the sum of angles added must be greater than 90°
So, Option A, C and D can't be correct, as their sum is less than 90°
Option B m<ZA+m<ZB = 155° is correct option.
Verify:
m<ZA = 25° (as found earlier)
m<ZB = 130° (given)
So, m<ZA+m<ZB = 155°
25°+130° = 155°
The true statement about the given angles of the triangle is m∠A + m∠B = 155⁰.
Sum of angles of Isosceles triangle
The sum of angles of Isosceles triangle must add up to 180 degrees.
Base angles of the Isosceles triangleLet the base angles = x and x
x + x + 130 = 180 (sum of angles in a triangle)
2x + 130 = 180
2x = 180 - 130
2x = 50
x = 25
Given angle B = 130°
B + A = B + C = 130 + 25 = 155°
Thus, the true statement about the given angles of the triangle is m∠A + m∠B = 155⁰.
Learn more about angles of Isosceles triangle here: https://brainly.com/question/155625
Help me please thank you I appreciate it
Answers
Angle zyx
Acute angle.
PLS PLS HELP! WILL GIVE BRAINLIEST IF ALL QUESTIONS ARE ANSWERED AND IF THEY’RE RIGHT!
Brad made a graph showing how many students were absent from school every day last week.
Use the graph to answer the questions.
1. List the ordered pairs for the graphed points.
Write your answer in the space below.
2. How many students were absent on day 3? Explain how you know.
Write your answer in the space below.
3. On which day were the greatest number of students absent? How many students were absent that day?
Write your answer in the space below.
4. Is the relation represented by the graph a function? Why or why not?
Write your answer in the space below.
Answers
Answer:
1. (1,7),(2.10),(3,5),(4,7),(5,9)
2. There were 5 students absent on day 3. I know because it shows on the graph.
3. Day 2 was the greastes number of studnets absent. There were 10 students absent that day.
4. The relation represented is a function becasue for each x-value there is only one y-value.
Step-by-step explanation:
41°
40°
X
X
O 40
39
0 41
Answers
Answer:
39
Step-by-step explanation:
just had it.
The graph represents the journey of a bus from the bus stop to different locations Bus Journey 4 Distance (miles) La 5 X Time (hours) Part A: Use complete sentences to describe the motion of the bus in parts 1, 2, 3, 4, and 5 of the journey (4 points) Part B: In which parts of the graph is the function increasing, decreasing, and constant? (4 points) Part C: Is the graph linear or non-linear? Explain your answer (2 points)
Answers
Answer: if the bus takes 5 hours to go the distance then it will take the y,x distances to go the 5 hours.
Step-by-step explanation:
LA cow's stomach produces about 20
cups of gastric acid each day. If I liter
equals 4.2 cups, how many liters is this?
Round your answer to the nearest liter.
A. 4 liters C. 80 liters
B. 5 liters D. 84 liters
Answers
Which shows a rational number plotted correctly on a number line?
A number line going from negative 8 to positive 4 in increments of 2. There are 4 equal spaces between each number. Negative 3.5 is plotted on the mark 1 space to the left of 4.
A number line going from negative 20 to negative 10 in increments of 2. There are 4 equal spaces between each number. Negative StartFraction 21 Over 2 EndFraction is plotted on the mark 1 space to the left of negative 10.
A number line going from negative 10 to positive 4 in increments of 2. There are 4 equal spaces between each number. Negative StartFraction 7 Over 2 EndFraction is plotted on the mark labeled negative 6.
A number line going from negative 2 to positive 8 in increments of 2. StartFraction 9 Over 2 EndFraction is plotted on the mark 1 space to the left of 4.
Answers
Answer:
A number line going from negative 20 to negative 10 in increments of 2. There are 4 equal spaces between each number. Negative StartFraction 21 Over 2 EndFraction is plotted on the mark 1 space to the left of negative 10.Step-by-step explanation:
A number line going from negative 8 to positive 4 in increments of 2. There are 4 equal spaces between each number. Negative 3.5 is plotted on the mark 1 space to the left of 4.
Incorrect. - 3.5>-4 and should be to the right of -4A number line going from negative 20 to negative 10 in increments of 2. There are 4 equal spaces between each number. Negative StartFraction 21 Over 2 EndFraction is plotted on the mark 1 space to the left of negative 10.
Correct. -21/2 = -10.5 < -10 is one space to the left of -10A number line going from negative 10 to positive 4 in increments of 2. There are 4 equal spaces between each number. Negative StartFraction 7 Over 2 EndFraction is plotted on the mark labeled negative 6.
Incorrect. -7/2 =-3.5 > -4 should be to the left of -4.A number line going from negative 2 to positive 8 in increments of 2. StartFraction 9 Over 2 EndFraction is plotted on the mark 1 space to the left of 4.
Incorrect. 9/2 = 4.5 > 4 should be to the right of 4.Answer:
B
Step-by-step explanation:
Trust me on this, also can I have brainiest please?
Hope you do well! :D
Please hurry and help me!
Answers
Answer:
The first one is 13/20 second one is 13/25 and the third is equally likely
Step-by-step explanation:
four students wrote expressions using the variable t below. If t represents a positive integer, whose expression had the greatest value?
Answers
Answer:
Devon
Step-by-step explanation:
lets use t=1 to compare
1. -5(12t+9)
if t = 1, -5(12+9) = -5(21) = negative number
2. 2(-6t-8)
if t = 1, 2(-6-8) = 2(-14) = negative number
3. -6(-2t+18)
if t = 1, -6(-2+18) = -6(16) = negative number
4. (-4(-3t-2)
if t = 1, -4(-3-2) = -4(-5) = 20 positive number
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What type of triangle can have one right angle?
acute
equilateral
isosceles
scalene
Answers
When using best subsets regression with a model that has four independent variables, a total of ________ different combinations of regression models will be considered.
a. 4
b. 15
c. 12
d. 18
Answers
Answer:
b. 15
Step-by-step explanation:
Given that:
There are 4 independent variables, then the subset regression total is 2⁴ = 16 attainable regression model.
However, out of these 16 regression models, 1 Model contains no predictors which only intercept 3 Model with [tex](X_1), (X_2), (X_3)[/tex], 3 Model with[tex](X_1,X_2), (X_1,X_3), (X_2,X_3)[/tex]. and 1 Model which comprises all the independent variables.
Therefore, when applying best subsets regression with a model that possesses four (4) independent variables, the number of different combinations of regression models that can be considered is 15.
The regular price of a bicycle is $120. The bicycle is on sale for 20% off. Which expression is equal to the sale price, in dollars, of the bicycle?
Answers
Answer:
$96
Step-by-step explanation:
120 x .20 = 24
120 -24 =$96
Given f-1(x)=-34x+2, which equation represents f(x)?
Answers
How do I solve this? Do I have to divide and do other steps?? Help please :/
Answers
Step-by-step explanation:
its decreasing so 2007 had 84.134 sheep farms so u gotta subract by a number to year 2080 and to get 79.300
The gym has 4 times as many baseballs than basketballs the gym has 25 total balls how many more baseballs than basket balls does the gym have
Answers
Let [tex]b[/tex] be the number of baseball and [tex]k[/tex] be the number of basket ball.
We have the following system:
[tex]\begin{cases}b=4k\\b+k=25\end{cases}[/tex]
Substitute the first equation into the second:
[tex]4k+k=25 \iff 5k=25 \iff k=5[/tex]
which yields
[tex]b=4k=4\cdot 5 = 20[/tex]
So, there are 20 baseballs and 5 basketballs, meaning that there are 15 more baseballs than basketballs.