Answers
Answer:
Step-by-step explanation:
They say "solve" the triangle, means just find all the sides and all the angles is all they are asking by "solve" .. saying "solve" sounds so ominous :/ like.. good luck with this... nobody can do it.. :D .. which there are math questions like that. soooo anyway, let's find AC , I'll call is side b , then using law of cosines, where AC = b , a = 9 and c=21, and angle B = 91°, then
b = sq rt[ a^2+c^2 - 2*a*c*cos(B) ]
b = sq rt[ 9^2 +21^2 -2*9*21*cos(91)]
b = sq rt [ 81 +441 -378 * (-0.0174524 )]
b = sq rt [ 522 + 6.597]
b = sq rt [528.597]
b = 22.991
side AC = 23.0 ( rounded to nearest 10th)
now that we have all three sides lets use law of sines to solve the angles, b/c it's easier :P call me "lazy" maybe ? or call me "maybe" :D :D the song, ofc. :D anyway
sin(91) / 22.991 = sin(C) /21
arcSin [ 21*sin(91) / 22.991] = C
arcSin[ 0.91326 ] = C
65.96 ° = C
C = 66.0 °
and then the same for angle A
Sin(91)/22.991 = sin(A) / 9
arcSin [ 9* sin(91) / 22.991 ] = A
arcSin [ 0.3913979 ] =A
23.04 ° = A
A = 23.0 °
let's add up the 3 angles to see if we get 180 or very very close
180.0015 ° ohh that's pretty close , nice I think the answers are right :P
23 +66+91=180 so the rounding to the nearest 10th makes them perfect , great , :)
Related Questions
WILL MARK BRAINLIEST! Solve for X on the provided picture. Thank you!
Answers
yeah yeah dababy car dababy
Answer:
Step-by-step explanation:
x + (180-140) + (180-132) = 180
x = 92°
What is the area of the top AND bottom faces?
Answers
Answer:
Top : 24cm²
Bottom : 24cm²
Step-by-step explanation:
Surface area : Base × Height
Top :
3 × 8 = 24
Bottom :
3 × 8 = 24
a. What is the difference in height between 30 m up a cliff and 87 m up a cliff? What is the distance between these positions?
b. What is the difference in height between an albatross flying at 100 m above the surface of the ocean and a shark swimming 30 m below the surface? What is the distance between them if the shark is right below the albatross?
Answers
Answer:
A. 57m B. 130m
Step-by-step explanation:
For problem A:
87m up a cliff - 30m up a cliff = 57m up a cliff
These are all positive values
For problem B:
100m above is talking about a positive value, making this a positive number
30m below is talking about a negative value, making this number -30
0 meters represents the surface
As you can see, this is forming a number line as of which
below the surface------------------------0m-------------------------above the surface
by substitution,
-30-----------------------------------------------0-------------------------------100
therefore, 100 - -30 = 130 meters
SA = 2tr2 + 2trh (Use 3.14 for .) How much metal is needed to create a cylindrical can with a height of 5 inches and a base diameter of 3 inches? square inches Do NOT round your answer.
Answers
Answer:
[tex]SA=61.26\ \text{inches}^2[/tex]
Step-by-step explanation:
The surface area of a cylinder is given by :
[tex]SA=2\pi r^2+2\pi rh[/tex]
Where
r is radius and h is height of the cylinder
We have, h = 5 inches and r = 3/2 = 1.5 inches
Put all the respected values.
[tex]SA=2\pi \times (1.5)^2+2\pi \times 1.5\times 5\\\\SA=61.26\ \text{inches}^2[/tex]
So, the surface area of the cylinder is equal to [tex]61.26\ \text{inches}^2[/tex].
Answer:
Answer: 61.23 / {I'm right trust me Acellus 2022}
Step-by-step explanation:
how much metal is needed to create a cylindrical can with a height of 5 inches and a base diameter of 3 inches
How many 1/5 are in 20? Enter your answer in the bo
Answers
Answer:
4
Step-by-step explanation:
20 devided by 1/5 is 4
Jill collected a total of 19 gallons of honey. If she distributes all of the honey equally between 7 jars, how much honey will be in each jar?
Answers
Which expresses shows another way to write 36+16?
Answers
4(9 + 4), because :
4 * 9 + 4 * 4 = 36 + 16
Need help please. What is the area of the shaded region. Thank you so much.
Answers
Answer:
[tex]Area = 8\ unit^2[/tex]
Step-by-step explanation:
Given
The 7 * 3 grid
Required
Determine the area of the shaded
From the grid, 4 cells on 2 rows were shaded.
Since 1 grid cell = 1 unit.
The area is:
[tex]Area = 4\ unit * 2\ unit[/tex]
[tex]Area = 8\ unit^2[/tex]
a tank holds 49 litres of oil. if 7 litres leaked what percentage of oul has leaked
Answers
The percentage of oil that has leaked from the tank is 14.29%.
Given the following data:
Tank capacity = 49 litres.Oil leakage = 7 litres.To determine the percentage of oil that has leaked from the tank:
How to calculate percentage.Mathematically, the percentage for the amount of oil leakage in this tank is given by this formula:
[tex]Percentage = \frac{Oil\;leakage}{Tank\;capacity} \times 100\\\\[/tex]
Substituting the given parameters into the formula, we have;
[tex]Percentage = \frac{7}{49} \times 100\\\\Percentage = 0.1429 \times 100[/tex]
Percentage = 14.29%.
Read more on percentage here: https://brainly.com/question/24304697
what is the difference in length between the longest meteor and the shortest meteor
Answers
Answer:
Please show the full problem
Step-by-step explanation:
Answer:
If this is the same question the answer is 3 1/3
Step-by-step explanation:
What is the equation ( y = mx + b) of the line that passes through (2,5) and (6, 13)
Answers
Answer:
y=2x+1
Step-by-step explanation:
y=mx+b
m=(13-5)/(6-2)
m=8/4
m=2
b=y-mx
b=5-2*2
b=5-4
b=1
y=2x+1
Answer:
y=2x+1
Step-by-step explanation:
m=(y2-y1)/(x2-x1)
m=(13-5)/(6-2)
m=8/4
m=2
y-y1=m(x-x1)
y-5=2(x-2)
y-5=2x-4
y=2x-4+5
y=2x+1
when 55 is added to a certain number and the sum is divided by 3 , the result is 4 times the original number what is the original number
Answers
Answer:
4.99
Step-by-step explanation:
i cant remember how i got 4.99 but can show u how to check
= 55 + 4.99 = 59.99
59.99 divide 3 = 19.99666667
= 19.99666667 divide 4 (working in reverse as it says 4 times the orig no.)
= 4.99 (was rounded)
Which equation is another way to show
5/4?
A. 1/5x1/4=
B. 4x1/5=
C. 4 divided by 5=
D. 5 divided by 4=
E. 5+1/4=
Answers
Answer:
D
Step-by-step explanation:
5 divided by 4 is just 5/4 written out
15, 16, 21 determine wether the triangle is acute
Answers
Answer:
no they don't because you could not use those numbers
Am I doing this right?
Answers
Answer:
Yes you are
You very much are doing the right thing
For this cylinder the radius = 6.8 inches and the height L = 14.2 inches. Which is the BEST estimate for the surface area?Use 3.14 what is this answer
Answers
Answer:
896.784
Step-by-step explanation:
Comment if you want the explanation
Find the area of the triangle below.
Be sure to include the correct unit in your answer.
Answers
Answer:
Area= 1/2bh
= 1/2 ( 16)(6)
=48 square yard.
Janie walks 1 mile to get to a running track.she then runs at a speed of 3.5 miles per hour.Which linear models represents the total distance she ran and walked, d, as a function of t, the time she runs,in hours?
Answers
Answer:
d = 3.5t + 1
Step-by-step explanation:
The linear function would have to multiply the speed she runs at the track by the number of hours that she spent running. Then it should add this amount to the 1 mile that she walked to get to the track. If we use the variable d as the total distance that she ran and walked, and the variable t to represent time then we would create the following linear function/model.
d = 3.5t + 1
You allowed to eat 11 bananas and you have already eaten 4. Find the possible amount of bananas you can eat today
Answers
Answer:
7
Step-by-step explanation:
11-4=7
11
-
4
____
7
So 1-4 you cant do so you to the left number which is 1 take it back and now it is 11-4 you add 10 so then the left number you cant use anymore so then its 11-4 which is 7.
Decide if the expression is positive or negative. Explain in words how you know, please.
11/-3 and -11/-3
Answers
Answer:
The expression is negative
Step-by-step explanation:
11/-3 is negative
-11/-3 is positive
negative + positive or positive + negative = negative
What is an equation of the line that passes through the points (7,4) and (-5,4)
Answers
Answer:
y=4
Step-by-step explanation:
A fish is swimming at a constant rate toward the ocean floor. The equation
y = -7x -3 can be used to represent this situation, where y is the depth of the fish in meters below sea level and x is the number of seconds the fish has been swimming.
Which statement best describes the depth of this fish, given this equation? (DOK 3)
A
From a starting position of 3 meters below sea level, the fish is going down( descending) 7 meters per second
B
From a starting position of 7 meters below sea level, the fish is ascending 3 meters per second
C
From a starting position of 7 meters below sea level, the fish is descending 3 meters per second
D
From a starting position of 3 meters below sea level, the fish is ascending 7 meters per second
Answers
Answer:
A
Step-by-step explanation: the -7x represents the 7 meters the fish is going down every second and the -3 would be the fish starting at 3 meter below sea level
Consider the number line.
+
+
-1
0
1
What is the value of x on the number line?
А
-1.5
B
-0.5
с
0.5
D
1.5
a
-1.5
Answers
What is the surface are of the box in square meters that Elizabeth decorates
Answers
Answer:
Step-by-step explanation:
One die, numbered 1, 2, 3, 4, 5, 6 is rolled. What is the probability of rolling a 1 or a 6?
Answers
Answer:
1/3
Step-by-step explanation:
There are 2 different options to get a 1 or a 6 out of 6 total options, so:
2/6 = 1/3.
Factor the following: 18X - 6
6 (3x - 1)
18 (x - 1)
9 (2x - 4)
I need the answer NOW
Answers
Answer:
Answer is 6(3x-1)
Step-by-step explanation:
I hope it's helpful!
Which of the following gives a valid reason for using the given solution method to solve the system of equations shown?
Equation 1: 4x - 5y = 4
Equation Il: 2x + 3y = 2
A. Elimination; a coefficient in Equation I is an integer multiple of a coefficient in Equation II.
B
Elimination; a coefficient in Equation II is an integer multiple of a coefficient in Equation I
0
Substitution: Equation I can be solved for x in one step by dividing both sides by 4.
D.
Substitution: Equation Il can be solved for x in one step by subtracting 3y from both sides.
Answers
Answer:
C
Step-by-step explanation:
ASAP!! Which graphs have same domain?
Graphs 1 and 2
Graphs 1 and 3
Graphs 2 and 3
Graphs 1, 2, and 3
Answers
Answer:
B
Step-by-step explanation:
2 and 1/6 of a foot converted into inches as a fraction
Answers
Answer:
26 inches
Step-by-step explanation:
1 foot = 12 inches
Nina took an exam. When her results came, she had 40% correct and 68% incorrect. Find the percent to correct answers to incorrect answers.
Answers
Answer: She had 27.2% correct.
Step-by-step explanation: To find the percent, we can divide the part and whole then multiply the quotient by 100. After that we'll need to convert the percent to a decimal. In mathematical terms, the formula will be,
[tex]\frac{part}{whole}=quotient*100[/tex]
40% will be the part and 68% will be the whole.
Step 1.
Convert 40 into a decimal by dividing it by 100.
40 ÷ 100 = 0.4
Step 2.
Multiply 0.4 by 68.
0.4 × 68 = 27.2
Hence, she had 27.2% correct.