If a elevator traveled 10 floors in 5 seconds , how many floors did it travel in 1 second ?
Answers
Answer:
2
Step-by-step explanation:
it's division 10/5 is 2 which means in one second it travels 2 floors
5/5 = 1
10/5 = 2
2 floors/second
Related Questions
A weather service records 28.8 inches of rain over a 12 month period. What is the average rainfall per month for the year?A:A)17 inchesB)2.4 incheso2.9 inchesD)3.1 inches
This is the two that go together, but are separate questions
Determine whether the improper integral converges or diverges, and find the value of each that converges.∫^0_-[infinity] 5e^60x dx
Please help it’s due at 5
cosine of 3 times pi over 10
sine of 7 times pi over 10
sine of 3 times pi over 10
(The clear version of the question is in the picture below)
Answers
Answer:
(b) cos(3π/10)
Step-by-step explanation:
The given expression matches the trig identity form for the cosine of the difference of two angles:
cos(α-β) = cos(α)cos(β) +sin(α)sin(β)
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To match the given expression exactly, we can choose ...
α = π/2
β = π/5
Then the difference is ...
α -β = π/2 -π/5 = (5/10)π -(2/10)π = 3π/10
The given expression can be shortened to ...
cos(3π/10)
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Additional comment
Sometimes it can be difficult to remember when the signs in trig identities match, and when they differ. The fact that cosines of smaller angles have larger values can be a peg on which to hang that hat.
Final answer:
The expression 'cosine of pi over 2 times cosine of pi over 5 plus sine of pi over 2 times sine of pi over 5'' can be rewritten as 'cosine of 3 times pi over 10' by using the cosine addition formula.
Explanation:
The question is related to the usage of trigonometric identities and laws, specifically the cosine addition formula. This formula is defined as: cos(a + b) = cos a cos b - sin a sin b. Looking at your original expression, we can identify a and b based on this definition, to make it align with the cosine addition formula structure. Let's pick a = pi/2 and b = pi/5.
Therefore, your original equation can be transformed as follows:
cos(pi/2)cos(pi/5) + sin(pi/2)sin(pi/5) = cos((pi/2) - (pi/5)) = cos(3pi/10).
So, the expression 'cosine of pi over 2 times cosine of pi over 5 plus sine of pi over 2 times sine of pi over 5' can be rewritten as 'cosine of 3 times pi over 10.' We have used the cosine addition formula to simplify the original expression.
Learn more about Cosine Addition Formula here:
#SPJ3
Find the number of sides of this polygon.
Answers
Answer:
45 sides
Step-by-step explanation:
If each of the interior angles is 172 degrees, then each of the exterior angles is 8 degrees. Since the sum of the exterior angles of any polygon is 360 degrees, there are 360 / 8 = 45 exterior angles and 45 sides.
largest of these numbers?
Answers
Answer:
14,15,16
Step-by-step explanation:
a+a+1 +a+2=45
3a+3 =45
3a=45-3
3a=42
a=42:3 =14(the first number
14+1=15 (the second number
14+2=16 (the third number, the largest number
Answers
3 / 8 + 2 / 8 = 5 / 8
We could add them together as their denominators are the same.
Thus, 5 / 8 liquid is used in this recipie
Hope this helps :))
~Top
Answers
Answer:
Steps given below and graph is attached.
Step-by-step explanation:
First Step:
Find out by substituting
Second Step:
Find out by substituting
Third Step:
Draw a line passing through .
Graph is attached.
Answers
42.5/7= 85/14
(85/14)*3=18.2 or (255/14 to be exact)
(85/14)*4= 24.29 or (170/7 to be exact)