Answers
Try this option:
1) if csc(u)=9, then 1/sin(u)=9 and sin(u)=1/9;
2) if sin(u)=1/9, then cos(u):
[tex]cos(u)=\sqrt{1-sin^2(u)}=\sqrt{1-\frac{1}{81}}=\frac{4\sqrt{5}}{9};[/tex]
3) [tex]if \ sin(u)=\frac{1}{9} \ and \ cos(u)=\frac{4\sqrt{5}}{9}, then[/tex]
[tex]sin(2u)=2sin(u)*cos(u)=\frac{8\sqrt{5}}{81};[/tex]
[tex]cos(2u)=cos^2(u)-sin^2(u)=\frac{80}{81}-\frac{1}{81}=\frac{79}{81};[/tex]
[tex]tan(2u)=\frac{sin(2u)}{cos(2u)}=\frac{\frac{8\sqrt{5}}{81}}{\frac{79}{81} }=\frac{8\sqrt{5}}{79}.[/tex]
Related Questions
The total length of 3 pipes is 24 inches. The middle-sized pipe is 6 inches longer than the smallest. The largest is twice as long as the smallest. How long is the middle-sized pipe?
Answers
The middle is 10.5
The largest is 9
So, 4.5+6=10.5
And 9=4.5(2)
Help help help math math
Answers
Answer:
I think its vertical opposite angle
Pls help!! What is the equation for the line in slope-intercept form
Answers
Answer:
y = -4x + 9
Step-by-step explanation:
using any two points, in this case (0, 5) and (3, -7) you can find slope by using this formula: [tex]m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]
plug in the x- and y- values of the two points above
[tex]m=\frac{-7-5}{3-0}=\frac{-12}{3}=-4[/tex]
y = -4x + b
use any point of the line and plug it into the equation above
5 = -4(0) + b
5 = -4 + b
5 + 4 = -4 + b +4
9 = b
the equation in full is y = -4x +9
A car travels at an average speed of 60 km/h for 2.1 hours.
How far did the car travel in km?
Answers
Answer:
15 km
Step-by-step explanation:
simplify (x^4-4x^3+9x^2-5x) (x^3-3x^2+7) -30x^2+25x^4
Answers
Answer:
x^7-7x^6+21x^5-13x^3+33x^2-35x
Step-by-step explanation:
there you go!
help please use picture
Answers
Answer:
y= -1x+4
Step-by-step explanation:
-1/1 is simplified to -1
Jasmine spends $1,089.72 each month for rent and supplies to run her hair salon. If she charges $18 for a haircut, how many haircuts must Jasmine do to cover her monthly expenses? Round to the nearest whole number.
Answers
Answer: 61 haircuts
Step-by-step explanation:
Write an equation in slop intercept form with a given slope. Slope: 5/6, y-intercept: 8
Answers
y=5/6x+8
...............
Kris and his dad built an ice rink. The area is 74.4 sq meters. The length is 12 meters what is the width
Answers
Answer:
6.2 meters
Step-by-step explanation:
1) area = l*w
74.4 = 12x
x=6.2
Matt had instruction to take a box of nailsn
Answers
Answer:
2960 mod 9 = 8. So the classrooms he can take it to are 8, 17, 26, ... 17 is among these so he is correct
Step-by-step explanation:
I really don't know cause there is not enough explanation
Evaluate 2/3p + 3 when p = 3/5=
Answers
Answer:
so 2/3X 3/5 + 3
10 + 9 / 15 by LCM method
so 19/15 + 3 = 19/15 + 45/15 = 64/15
hope it helps
Step-by-step explanation:
Answer:
3 2/5
Step-by-step explanation:
2/3 (3/5) + 3
Multiply
6/15 + 3
Reduce fraction
2/5 + 3 = 3 2/5
Let f(x)=5(3)x−4. Evaluate f(6).
Answers
5(3)(6)-4
15(6)-4
90-4
86
hope it helps
Given that:
f(x) = 5(3)x-4
f(6) = 5(3)(6) - 4 ⇛15(6) - 4 ⇛90-4 ⇛86Ans.
3x+2(x-5)=25
multi step equation
Answers
Answer:
3x + 2x - 10 = 25
5x = 35
x = 7 is your answer
Step-by-step explanation:
brainliSt plz
If the probability that a randomly chosen college student uses a ride sharing app is 0.27, then what is the probability that a randomly chosen college student does not use a ride sharing app?
Give your answer as a decimal.
Answers
Answer:
0.73
Took the quiz
The probability that a randomly chosen college student does not use a ride sharing app is 0.73.
What is the probability?Probability is a stastistical measure that is used to determine who likely it is that event would happen. The probability the event occurs is 1 and the probability that the event does not occur is 0.
The probability that a randomly chosen college student does not use a ride sharing app = 1 - 0.27 = 0.73
To learn more about probability, please check: https://brainly.com/question/13234031
Does anyone have the answers to Basic derivative rules: table on khan academy?
Answers
Answer:
The following table lists the value of functions ggg and hhh, and of their derivatives, g'g
′
g, prime and h'h
′
h, prime, for x=3x=3x, equals, 3.
xxx g(x)g(x)g, left parenthesis, x, right parenthesis h(x)h(x)h, left parenthesis, x, right parenthesis g'(x)g
′
(x)g, prime, left parenthesis, x, right parenthesis h'(x)h
′
(x)h, prime, left parenthesis, x, right parenthesis
333 ~~9 9space, space, 9 ~~~0 0space, space, space, 0 -15−15minus, 15 ~~~6 6space, space, space, 6
Let function GGG be defined as G(x)=2g(x)-h(x)+8G(x)=2g(x)−h(x)+8G, left parenthesis, x, right parenthesis, equals, 2, g, left parenthesis, x, right parenthesis, minus, h, left parenthesis, x, right parenthesis, plus, 8.
G'(3)=G
′
(3)=G, prime, left parenthesis, 3, right parenthesis, equals
Step-by-step explanation:
Find the area of the figure. Round to the nearest tenth if necessary.
Answers
Answer:
what is the figure i can kindly help if the figure was there i will edit this message and give the answer after i see the figure
Find an angle betwwen 0 and 2pie that is coterminal with -19pie/10
Answers
Answer:
π/10
Step-by-step explanation:
α=-19π/10=-19π/10+2π=(-19π+20π)/10=π/10
Please help!! Thank you!!!!
Answers
Answer:
total cost = 10 • months + 100
Step-by-step explanation:
The $100 application fee is extra, only needed to pay once. The $10 per month is multiplication. $10 • the number of months.
pls help... I need to write some words to post this
Answers
Answer:
k=100, n=3, 1.5625, 10
Step-by-step explanation:
To find n and k, we can plug x and z in.
First we can try this for (1,100). We will get:
[tex]100=\frac{k}{1^{n} }[/tex]
Since 1 to any power is 1, we can assume that the denominator is 1 and therefore k=100.
Armed with k=100, we can plug numbers into the second equation.
[tex]12.5=\frac{100}{2^{n} }[/tex]
Moving [tex]{2^{n} }[/tex] to the left side, we get:
[tex]2^n=\frac{100}{12.5} }=8[/tex]
therefore we can solve and we see that n=3.
We can do the same for x=4, but since we have n, k, and x, we can plug these in to get z
[tex]z=\frac{100}{4^{3}} =1.5625[/tex]
We will do the same as previous but instead plug in x
[tex]\frac{1}{10}=\frac{100}{x^{3} }[/tex]
We isolate [tex]x^{3}[/tex] and get
[tex]x^{3} =1000[/tex]
Therefore x=10
HELP
Lyndie is making reduced copies of a photo that measures 25 centimeters in height. She sets the copy machine to an 80% size
reduction.
PART A
Write a percent equation that represents
the relationship of the height of the first
copy to the height of the original photo.
PART B
Lyndie wants to make another copy that
will have a height of 17 cm. The copy
machine settings increase or decrease in
increments of 5%. Which photo should she
make her copy from, the original or her
first copy? Explain.
Answers
Answer: 5+ba*7= 88
Step-by-step explanation:
Help help help help help help math math
Answers
Answer:
4x+14 = 2(2x+7}
12x+6=6{2x+1}
Three cards are dealt from a shuffled standard deck of playing cards. Find the probability that the first card dealt is red, the second is black, and the third is red. (Enter your probability as a fraction.)
Answers
There are 52 cards in a deck, half the cards aware red and half the cards are red.
First card being red is 26/52 = 1/2
After the first card is dealt there are 51 cards left and 26 are black so dealing a black card = 26/51
After 2 cards are dealt there are 50 cards left and 25 red ones left. The probability would be 25/50 = 1/2
The probability of all 3 happening = 1/2 x 26/51 x 1/2 = 13/102
Answer: 13/102
Sasha's SUV has a 17-gallon gas tank. The SUV gets an estimated 24 miles per gallon.
Approximately how many miles can the SUV run on half a tank of gas?
Answers
Answer:
The SUV can run 204 miles with half a gas of tank.
Step-by-step explanation:
Divide 17 by 2=8.5 gallons
Then do the formula for distance which is:
miles per gallon times gallon
24 times 8.5 would be 204
204 is your answer :3
Which statement is true about the value of 1-5/?
O It is the distance that -5 is from 0 on the number line.
O It is the distance that -5 is from 5 on the number line.
O It is less than 5.
0 It is greater than 5.
Answers
Answer:
O It is less than 5.
Step-by-Step
OK so, first u check if it has a negative. It does, so its at the left of 0. SO you know its less than.
please help me ill mark as brainliest and its worth 50
Answers
Answer:
C [tex] \dfrac{9a^{12}}{b^3} [/tex]
Step-by-step explanation:
54/6 = 9
a^8 / a^-4 = a^{8 - (-4)} = a^12
b^2 / b^5 = b^-3 = 1/b^3
Answer: C [tex] \dfrac{9a^{12}}{b^3} [/tex]
Answer:
Option C
Step-by-step explanation:
[tex] \sf \dfrac{54 {a}^{8} {b}^{2} }{6 {a}^{ - 4} {b}^{5} } [/tex]
We know that
[tex] \sf \: \frac{ {a}^{m} }{a {}^{n} } = a {}^{m - n} [/tex]
[tex] \sf 9 \dfrac{a {}^{8} {b}^{2} }{ {a}^{ - 4} {b}^{5} } [/tex]
[tex] \sf \: 9 \dfrac{ {a}^{8 - ( - 4)} b {}^{(2 - 5)} }{1} [/tex]
[tex] \sf \: 9 \dfrac{ {a}^{12}b {}^{ - 3} }{1} [/tex]
[tex] \sf \: \dfrac{9 {a}^{12} }{ {b}^{3} } [/tex]
Which of the following statements explains the correct method to solve the equation 7x - 8 = 48?
Answers
Answer:
Follow the explanation below.
Step-by-step explanation:
7x = 48 - 8
7x = 40
x = 40/7
x = 5.714
-) Which is a valid velocity reading for an object? O 45 m/s O 45 m/s north 23 O O m/s south O 0 m/s ok Save and Exit Next Mark this and return
Answers
Answer:
Step-by-step explanation:
0 can't have a direction. It does not move. It has no speed component. Therefore 0 m/s south is not the answer.
45 m/s has no direction stated. It is just a speed, not a velocity.
45 m/s north is a velocity. It has both speed and direction.
Math temperature question
Answers
Answer:
-10.9
Step-by-step explanation:
Add -20.4, -7.6, -15.8, -9.5, 4.2 and -16.3 to get -65.4.
Divide -65.4 by the count of the numbers. (6)
There are 9 3/5 pounds of bricks in the bag each brick weights 1 1/5 pounds ? How many bricks are in the bag
Answers
Answer:
there are 6 bricks in th ebag
Step-by-step explanation:
6 bricks in the bag.....
the simple interest on a sum of rs 5000 at 4% p.a. for one year is __________.
Answers
Answer:
Principal = Rs. 5000
Rate of Interest = 5%
Number of years = 2 y 3 m = 2 1/4 years
Interest = (P x N x R) / 100
ie (5000 x 9/4 x 5) /100= Rs. 562.50
