Question 16 (Essay Worth 7 points)
Verify the identity.
tan (x + π/2) = -cot x
Answers
Look at the attached picture
Hope it will help you....
good luck on your assignment
Have a great day.................
Related Questions
I hope ya'll can answer this guys plz help more points!!!!!!
Answers
Answer:
32 (Answer D)
Step-by-step explanation:
-1
(4 )(2^3 / 16)
or:
1 8*16
------- * ------------ = 32 (Answer D)
4 1
Answer:
D
Step-by-step explanation:
Lucas built a composite solid by joining 12 identical blocks, with dimensions 4 inches by 5 inches by 7 inches, into three rows of four as shown.
12 blocks are in 3 rows of 4. Each block is 4 inches by 5 inches by 7 inches.
What is the total surface area of the composite solid?
521 square inches
1,042 square inches
1,072 square inches
1,992 square inches
Answers
Answer
the answer is b. im not sure though
Step-by-step explanation:
1042 square inches is the total surface area of composite solids.
It is clear from the image that the resulting composite solid is a cuboid.
whose sides are as follows
Across the length, there are 3 blocks along the side of 7 inches each.
[tex]Length = 7 \times 3 = 21\ inch[/tex]
Width = 5 inch
Across the height, there are 4 blocks along the side of 4 inches each.
[tex]Height = 4 \times 4 = 16\ inch[/tex]
What is the total surface area of a cuboid?[tex]\text{Total Surface Area = } 2 (l\times w+ w \times h+ h \times l)[/tex]
We know that the total surface area of a cuboid is,
[tex]\text{Total Surface Area = } 2 (l\times w+ w \times h+ h \times l)\Rightarrow 2 (21 \times 5 + 16 \times 21 + 16 \times 5 )\\\Rightarrow 2 (105 + 336+80)\\\Rightarrow 2 \times 521\\\Rightarrow 1024[/tex]
Therefore, the total surface area = 1024 square inches.
To learn more about the surface area visit:
https://brainly.com/question/76387
#SPJ2
PLEASE HELP ME!!! please asap
Answers
Answer:
Mean of the distribution shown in picture:
M = sum of all elements/number of elements
M = (2 + 6 + 4 + 2 + 0 + 1 + 6 + 4 + 2 + 1)/10 = 2.8
=> Option D is correct
(3 is closest number to mean = 2.8)
Hope this helps!
:)
How do flies walk on the ceiling? ...
Answers
In a deck of cards you have 52 cards.
13 club cards (black) Ace, 2, 3, 4, 5, 6, 7, 8, 9, J, Q, K
13 spade cards (black) Ace, 2, 3, 4, 5, 6, 7, 8, 9, J, Q, K
13 diamond cards (red) Ace, 2, 3, 4, 5, 6, 7, 8, 9, J, Q, K
13 heart cards (red) Ace, 2, 3, 4, 5, 6, 7, 8, 9, J, Q, K
EXAMPLE:If I pick a card what is the probability of me picking a J? 4/52
Questions:
(1) What is the probability of picking a red card?
(2) What is the probability of getting an Ace?
(3) What is the probability of getting a 5 or a Q?
Answers
Answer:
1) 1/2
2) 1/13
3)1/169
Step-by-step explanation:
not sure about the last one
correct me if i am wrong
It takes a painter and his friend 8 hours to paint a room. If the painter was working alone, it would take him 12 hours less than if his friend was working alone. How long does it take the painter to paint the room by himself? Please explain to get brainliest
Answers
Answer:
The painter paint the room by himself in 12h.
Step-by-step explanation:
If we consider that the room is the distance that the painter and his friend need to paint, then each person will have a painting speed and if we sum them they will finish the room in 8 hours. If we call the speed of the painter "x" and the his time "tx", while his friend will be "y" and his time will be "ty". We can apply each case to the average speed formula:
Both working together:
speed = distance / time
x + y = room / 8
The friend alone:
y = room / ty
The painter alone:
x = room / tx
Therefore:
(room/tx) + (room/ty) = room/8
1/tx + 1/ty = 1/8
(tx + ty)/tx*ty = 1/8
8*tx + 8*ty = tx*ty
Since tx = ty - 12, we have:
8*ty - 96 + 8*ty = ty² - 12*ty
ty² - 12*ty - 16*ty + 96 = 0
ty² - 28*ty + 96 = 0
ty = 4 or ty = 24
Since tx = ty - 12, ty can only be 24, because if it was 4, then the painter time would be negative and that is impossible. So we have:
ty = 24
tx = 24 - 12 = 12
The painter paint the room by himself in 12h.
The painter to paint the room by himself in 12 hours
How to find work done by painterLet
Work done by painter friend = xWork done by painter = yFriend
x = room / time taken
Painter
y = room / time taken
painter and friend
x + y = room / 8
(room/friend time ) + (room/painter time) = room/8
1/friend time + 1/painter time = 1/8
(friend time + painter time)/friend time × painter time = 1/8
8 × friend time + 8 × painter time =friend time × painter time
Since friend time = painter time - 12, we have:
8 × painter time - 96 + 8 × painter time = painter time² - 12 × painter time
Painter time² - 12 × painter time - 16 × painter time + 96 = 0
painter time² - 28 × painter time + 96 = 0
solve using factorization methodPt = 4 or = 24
Since friend time = painter time - 12,
Painter can is 24, because if it is 4, then the painter time would be negative and that is impossible.
So,
Painter = 24
Friend time = 24 - 12 = 12
Therefore, the painter paint the room by himself in 12 hours
Learn more about work done:
https://brainly.com/question/18762601
Plz help
What is the area of the triangle?
A triangle has a base of 4 inches and height of 5.5 inches.
5 in.2
10 in.2
11 in.2
22 in.2
Answers
Answer:11in
Step-by-step explanation:
4*5.5=22/2=11
Hope I helped
Answer:
11in.2
Step-by-step explanation:
what is 1.2 -0.145 because last time I did this I got it wrong
Answers
Answer:
1.055 is the answer
Answer:
1.055
Step-by-step explanation:
1.2-0.145=1.055
(01.01)
Evaluate −15 + (−4). (1 point)
Group of answer choices
Answers
Answer:
-19
Step-by-step explanation:
-15+ (-4)
15 + 4
19
-19
since theyre both negatives you are adding
Square root of 250/10.
I don’t know how to properly ask the question so I provided a picture:
Answers
Answer:
5
Step-by-step explanation:
First simplify 250/10= 25
square 25= 5
Which will hold more juice, 14 cans of 150 ml or 2L bottles?
Answers
*Explanation*: if you multiply 14 by 150 you should get 2,100. If you convert this to litters you get 2.1. So the 14 cans of 150 ml should hold more juice, but just a little
Hope this helps :)
Answer:
14 can of 150 ml
Step-by-step explanation:
14 times 150 ml is 2100 ml.
Then you have to convert 2100 into L.
Which will get you 2.1 L
And there is your answer
PLEASE MARK AS BRAINLIEST
Use the order of operations to evaluate the expression. 4 × ( 3 4 − 1 2 ) + 3 × 6
A. 19
B. 20 1 2
C. 24
D. 33
Answers
Answer:
19
Step-by-step explanation:
4 × ( 3/ 4 − 1/ 2 ) + 3 × 6
PEMDAS
Parentheses first
4 × ( 3/ 4 − 2/4 ) + 3 × 6
4 × ( 1/4 ) + 3 × 6
Then multiply and divide from left to right
1 + 18
19
A rental car agency charges $12 per day plus 14 cents per mile to rent a certain car. Another agency charges $15
per day plus 9 cents per mile to rent the same car. How many miles per day will have to be driven for the cost of a
car from the first agency to equal the cost of a car from the second agency?
Answers
Answer:
The cost of renting will be the same for 200 miles.
Step-by-step explanation:
Let n the number of miles and C be the cost. We can represent the cost equations for each companies:
A: C = 12 + 0.09n
B: C = 8 + 0.11n
They want to know when the cost will be the same, so we can set the above 2 equations equal to each other and solve for n:
12 + 0.09n = 8 + 0.11n
0.02n = 4
n = 200
Answer: I don't want to be rude but, you're not helping me at all.
Step-by-step explanation:
Pls, help with this!!!
Answers
Answer:
The first one is 8/12.
Step-by-step explanation:Add numerator and keep denominator same.
Answer:
5/12 + 3/12
Step-by-step explanation:
[tex]\frac{5}{12} + \frac{3}{12} = \frac{8}{12}[/tex]
This is because when adding fractions with the same denominator, you just add the numerators.
The other answer choices do not equal 8/12...
[tex]\frac{2}{4} + \frac{3}{4} + \frac{3}{4} = \frac{8}{4} = 2[/tex]
[tex]\frac{2}{3} + \frac{3}{4} + \frac{3}{5} = \frac{40}{60} + \frac{45}{60} + \frac{36}{60} = \frac{121}{60} = 2 \frac{1}{60}[/tex]
[tex]\frac{4}{6} + \frac{4}{6} = \frac{8}{6} = \frac{4}{3} = 1 \frac{1}{3}[/tex]
I hope this helps!
21:20
In which step did Yvonne first make an error?
Yvonne is solving the quadratic equation 6x2 + 24x + 7 = 0
by completing the square. Her first four steps are shown in
the table.
Yvonne's Work
Step 1
Step 2
Step 3
Step 4
Step 1
Step 2
6x² +24x+7-0
6x² +24x - 7
6(x²+4x) -7
6(x²+4x+4) - 3+24
6(x+2)²-27
Step 3
Step 4
Mark this and return
Save and Exit
Next
Submit
Answers
Answer:
Step 2Step-by-step explanation:
Given the quadratic equation 6x² + 24x + 7 = 0, the following steps must be followed when finding the roots using the completing the square method.
Step 1: Subtract 7 from both sides
6x² + 24x + 7 - 7= 0 -7
6x² + 24x = -7
Step 2: divide through by the coefficient of x²
6x²/6 + 24x/6 = -7/6
x² + 4x = -7/6
Step 3: Add half of the coefficient of x (i.e 4/2 = 2) to both sides of the equation to complete the square of the equation x² + 4x.
x² + 4x + 2= -7/6 + 2
(x+2)² = -7/6 + 2
(x+2)² = 5/6
Step 4: taking the square root of both sides
√(x+2)² = √5/6
x+2 = ±√5/6
x = -2±√5/6
x = -2+√5/6 and -2-√5/6
Based on the conclusion above, it can be seen that Yvonne made the first error in step 2. Yvonne suppose to divide through by the coefficient of x² (i.e 6)
Katie has 36 coins in her jar (nickels, dimes, and quarters) totalling $4.20. She has twice as many dimes as quarters. How many nickels does Katie have?
Answers
Answer:
I think you need to mutply those. And you will get your answer.
Step-by-step explanation:
If two fair dice, one red and one white, are rolled, in how many ways can the result be obtained?
The sum of the two dice is less than 5.
O A. 4 ways
OB. 10 ways
OC. 6 ways
OD. 5 ways
Answers
Answer:
C. 6 ways
Step-by-step explanation:
When two fair dice are rolled, the sample space of the outcome is given below:
[tex](1,1) (1,2) (1,3) (1,4) (1,5) (1,6)\\(2,1) (2,2) (2,3) (2,4) (2,5) (2,6)\\(3,1) (3,2) (3,3) (3,4) (3,5) (3,6)\\(4,1) (4,2) (4,3) (4,4) (4,5) (4,6)\\(5,1) (5,2) (5,3) (5,4) (5,5) (5,6)\\(6,1) (6,2) (6,3) (6,4) (6,5) (6,6)[/tex]
Where in the pair (x,y), x represents the red die and y represents the white die.
The outcome in which the sum of the two dice is less than 5 are:
[tex](1,1) (1,2) (1,3) \\(2,1) (2,2) \\(3,1)[/tex]
Therefore, this result can be obtained in 6 ways.
The correct option is C.
Considering all the possible outcomes, it is found that the number of times a sum of the two dice less than 5 can be obtained is:
C. 6 ways
What are the possible outcomes when two dices are rolled?(1,1), (1,2), (1,3), (1,4), (1,5), (1,6)
(2,1), (2,2), (2,3), (2,4), (2,5), (2,6)
(3,1), (3,2), (3,3), (3,4), (3,5), (3,6)
(4,1), (4,2), (4,3), (4,4), (4,5), (4,6)
(5,1), (5,2), (5,3), (5,4), (5,5), (5,6)
(6,1), (6,2), (6,3), (6,4), (6,5), (6,6)
Of those, the ones with a sum of less than 5 are given by:
(1,1), (1,2), (1,3), (2,1), (2,2), (3,1)
6 ways, hence option C is correct.
A similar problem, in which the number of possible outcomes is found, is given at https://brainly.com/question/24314866
You will flip a coin 5 times and roll a die 10 times and record your findings.
What is the probability that you get heads and the number 1. Write your
answer as a percent.
Put your answer here:
P (Heads and 1)
=
Answers
Answer:
C
Step-by-step explanation:
Brendan read 4 books in 4 weeks, reading the same number of books each month, and in each week of the month. If Alicia reads 2 books each week, how many more
books does Alicia read each week than Brendan?
1.2
2.2
3.4
4.12
Answers
Answer:
idk
Step-by-step explanation:
An employee’s hourly raise went up from $10 per hour to $14 per hour. What is the rate of increase?
Answers
Answer:
The rate of increase is 40%
14 - 10 = 4
4/10 = 40%
Please help me with this question
Answers
Answer: Can you elpan it so I can figgure it out
Step-by-step explanation:
Answer:
150
Step-by-step explanation:
Because the inscribed angle is 75 degrees, the angle of arc AC is 75*2=150 degrees, which is the same as the angle of its respective central angle. Hope this helps!
Simplify: 9p - 2p2 + 5p
Answers
Answer:
p(9-4+5) = 0p = indeterminate
Step-by-step explanation:
there's no explanation, it's a simple concentration
Answer: 5p3 - 2p2 + 14p - 4
Explain the Error. A student said the volume of a cylinder with a 3- inch diameter is two times the volume of a cylinder with the same height and a 1.5 inch radius. What is the error?
Answers
Answer:
See explanation
Step-by-step explanation:
Because the formula for the volume of a cylinder is [tex]\pi r^2 h[/tex], when you multiply the radius by 2, the volume increases by [tex]2^2=4[/tex] times. Hope this helps!
SOLVE EACH Equation by completing the square
1) p2 + 8p - 33 - 0
Answers
Answer:
p = - 11, p = 3
Step-by-step explanation:
Given
p² + 8p - 33 = 0 ( add 33 to both sides )
p² + 8p = 33
To complete the square
add ( half the coefficient of the p- term )² to both sides
p² + 2(4)p + 16 = 33 + 16
(p + 4)² = 49 ( take the square root of both sides )
p + 4 = ± [tex]\sqrt{49}[/tex] = ± 7 ( subtract 4 from both sides )
p = - 4 ± 7
Thus
p = - 4 - 7 = - 11
p = - 4 + 7 = 3
f (x) = 2 |* – 2] + 3
How to evaluate
Answers
Answer:
problem can't be solved
Step-by-step explanation:
A cone has a radius of 11 inches and a height of 4.5 inches what is the volume of the cone use 3.14 for pie round to the nearest 10th
Answers
1/3* PI * r^2 * h = V
(r^2 = r squared)
Now we just plug in! Because you specified 3.14 for pi, replace!
=> 1/3 * 3.14 * (11)^2 * 4.5
=> 569.91
Nearest tenth
=> 569.9 inches cubed.
Perform the following
mathematical operation, and
report the answer to the
appropriate number of
significant figures.
7.273 - 12.37 = [?]
Answers
Answer:
-5.10
Step-by-step explanation:
shrug
5 buses left Midville each day. 40 buses left in all. How many days did buses leave Midville?
Answers
Answer:
8 days
Step-by-step explanation:
If 5 buses left Midville every day and 40 buses left in all, you have to do 40÷5=8 days
Answer: 8 days
Step-by-step explanation: 40 / 5 = 8
that is the amount of days it will take for all the buses to leave.
The function h represents the?
Answers
Answer: B
Step-by-step explanation:
38 height
-16 is the time
what is 8h+7m
need help please!!!!
Answers
Answer: 14 hm
Step-by-step explanation:
Just add numbers together then put letters in order they show in equation
Answer:
I’m not 100% sure what you mean but if h is hours and m is minutes then it is 487 minutes but we need values for each letter if that is what the question is asking for.
Step-by-step explanation: