Sinx = [tex]\frac{3}{8}[/tex]
Find cosx and tanx
Answer:
Cos(x) = sqrt(55) / 8; tan(x) = 3/sqrt(55)
Step-by-step explanation:
Sine is opposite over hypotenuse. So we get that the opposite is 3 and the hypotenuse is 8. To find the adjacent (which we'll need for cosine and tangent), we can use pythagoras' theorem. Therefore, 8^2 = 3^2 + A^2, where A is the adjacent. A then must equal sqrt(64-9) = sqrt(55).
Cosine is adjacent over hypotenuse, which is then sqrt(55) / 8. Tangent is opposite over adjacent, which is then 3 / sqrt(55) or (sqrt55)*3/55
Please help.
Is algebra.
PLEASE HELP NO LINKS OR FILES.
I don't want links.
A daily newspaper sells monthly subscriptions for $15. Each individual copy of the newspaper costs $0.75. In a month that has exactly 30 days, how much could be saved by purchasing a subscription instead of purchasing an individual copy each day?
Answer:
With the subscription, $7.5 will be saved.
Step-by-step explanation:
Giving the following information:
A daily newspaper sells monthly subscriptions for $15. Each copy of the newspaper costs $0.75.
First, we need to calculate the total cost of buying 30 newspapers individually:
Total cost= 0.75*30
Total cost= $22.5
Difference= 22.5 - 15= $7.5
With the subscription, $7.5 will be saved.
Two cars leave simultaneously from points A and B, the distance between which is 280 km. If the cars move to meet each other, they’ll meet in 2 hours. But if they move in the same direction, then the car going from point A will catch up with the car going from point B in 14 hours. What is the speed of each of the cars?
Answer:
Car A speed = 80 m/s
Car B speed = 60 m/s
Step-by-step explanation:
Let Speed of Car A be represented as x
Let Speed of Car B be represented as y
280 = (x+y)(2)140 = x+y --> Equation 1Let z represent the distance that Car A travels until it catches up to Car B
280+z = x(14)Since it takes 14 hours for Car B to cover the distance z,
z = 14y280+14y = 14x280 = 14(x-y)20 = x-y --> Equation 2Solving Equation 1 and Equation 2, we get:
x = y+20140 = 2y+20120 = 2yy = 60 x = y+20 = 80Answer:
Car A speed = 80 km/h
Car B speed = 60 km/h
Step-by-step explanation:
how do i find the radius of a cylinder when only given height and width
Step-by-step explanation:
The width of the cylinder might also be the diameter of its circular faces, and half of the diameter is the radius. So, dividing the width by 2 might give you the radius.
What is the surface area of the sphere in terms of pie?
(Answer only with right answers no links or you’ll be reported)
Answer:A
Step-by-step explanation:
because A= pi r2
A= pi 5 two
A=25 pi
Hong drove 756 miles in 12 hours.
At the same rate, how long would it take him to drive 441 miles?
Answer:
It will take him 7 hours to drive 441 miles
Step-by-step explanation:
Answer:
I wanna say 7 hours
BRAINLIEST FOR CORRECT ANSWER! Use the point P( 3, -6). Write the ordered pairs for the final location of the given point after completing the transformations in the order listed.
1. (x, y) -> (x -1, y+4), reflection over y-axis
2. Reflection over the y-axis (x,y) -> (3x, 3y)
Answer:
1) (3,-6)
left 1 up 4
(2,-2)
reflection over y axis
(-2,-2)
2) (3,-6)
Reflection over y axis
(-3,-6)
x times 3 and y times 3
(-9,-18)
The length of a rectangular screen is 6 feet, and the width of the screen is 8 feet. What is the length of a diagonal of this screen in feet?
Answer:
Length of diagonal = 10 feet
Step-by-step explanation:
Length of a rectangular screen = 6 feet
Width of the rectangular screen = 8 feet
Since, all interior angles of a rectangle are 90°,
Triangle formed with two adjacent sides and the diagonal will be a right triangle.
By applying Pythagoras theorem,
Hypotenuse² = (leg 1)² + (leg 2)²
(Diagonal)² = (leg 1)² + (leg 2)²
Diagonal = [tex]\sqrt{6^2+8^2}[/tex]
= [tex]\sqrt{100}[/tex]
= 10 feet
A right rectangular prism has base dimensions of 2 1 /10 ft wide and 4 1/ 5 ft long. If the height of the prism is 3 1 /2 ft, what is the volume of the prism?
Answer:
2 1/10 x 4 1/5 x 3 1/2 = 30 87/100 feet
(Remember multiply one by one first multiply 2 1/10 x 4 1/5 = 8 41/50
then multiply 8 41/50 with 3 1/2 to get = 30 87/100 is your answer)
Step-by-step explanation:
Just multiply the given lengths. A 3 dimensional shape has to be given 3 sides in order to know the area/volume: Length x Width x Height
what percentage is $4 of $16?
Please help.
Is algebra.
PLEASE HELP NO LINKS OR FILES.
I don't want links.
Answer:
b
Step-by-step explanation:
first, group the terms with the same power together and it would become (-9n⁵-4n⁵)+(n³-9n³)+(11n+6n). then, combine the terms in each group together which would get -13n⁵-8n³+17n as the answer
HELP NEEDED 20 POINTS AND BRAINLIST!!!! Please explain your answer and no links! please!
Answer:
From (0,0) and go down 1 and put a dot then down 4 and over to the right 1 and draw a line.
Step-by-step explanation:
Hope this helps have a nice day!
find the sum of 3x,(1-6x),4x and x
Answer:
2x+1
Step-by-step explanation:
S=3x+(1-6x)+4x+x=3x-6x+4x+x+1=2x+1
An adult ticket to the school play cost $14.75. A child ticket cost $5.25. Mr. Montes bought 2 adult tickets and 4 child tickets.
Answer:
$50.50
Step-by-step explanation:
From the above question, we are to find the total cost of the tickets Mr Montes bought
An adult ticket to the school play cost $14.75.
A child ticket cost $5.25.
Mr. Montes bought 2 adult tickets and 4 child tickets.
Hence, the total cost is
= 2 × $14.75 + 4 × 5.25
= $29.5 + $21
= $50.50
please help me ahhh im doing 8th grade math with pythagorean theorem i really need help please 15 points!!
Hey can you help me fast!!!
Answer:
32 squared ft
Step-by-step explanation:
The pattern for the kite calls for 169 square inches of fabric. What is the
side length of the kite?
Answer:
13 inches.
Step-by-step explanation:
Square root 169 and you will get the answer 13. Hope this helped.
An aquarium holds 11.95 cubic feet of water, and is 2.8 feet long and 1.4 feet wide. What is its depth? Round your answer to the nearest whole number.
Answer:
3.05feet
Step-by-step explanation:
Given data
Volume = 11.95 cubic feet
Lenght = 2.8 feet
Width= 1.4feet
Depth= ????
We know that the expression for the volume is
V= L*W*D
substitute
11.95= 2.8*1.4*D
11.95= 3.92D
divide both sides by 3.92
D= 11.95/3.92
D= 3.05
Hence the depth is 3.05feet approx
About 3.9x10 people live in California. About 1.3x10° people live in Maine. About how
many more people live in California than live in Maine?
A.) 2.6x10^6
B.)2.6x10^7
C.)3.77x10^6
D.)3.77x10^7
Given:
Consider the population of California = [tex]3.9\times 10^7[/tex]
Consider the population of Maine = [tex]1.3\times 10^6[/tex]
To find:
The difference between the population of California and Maine.
Solution:
We have,
Population of California = [tex]3.9\times 10^7[/tex]
Population of Maine = [tex]1.3\times 10^6[/tex]
Difference between the population of California and Maine is
[tex]\text{Difference}=3.9\times 10^7-1.3\times 10^6[/tex]
[tex]\text{Difference}=3.9\times 10^7-(0.13\times 10)\times 10^6[/tex]
[tex]\text{Difference}=3.9\times 10^7-0.13\times 10^7[/tex]
[tex]\text{Difference}=(3.9-0.13)\times 10^7[/tex]
[tex]\text{Difference}=3.77\times 10^7[/tex]
Therefore, the correct option is D.
Quadrilateral ABCD has the following coordinates A (0,0) B(0,3) C(5,5) D(5,2). What kind of quadrilateral is ABCD? Prove your answer
Answer:
Parallelogram
Step-by-step explanation:
Prove using diagram on graph paper (attached drawing)
determine the missing length in your right triangle using the Pythagorean theorem. round your answer to the nearest 10th if necessary
Answer:
21.4
Step-by-step explanation:
13^2 + 17^2 = c^2
169 + 289 = c^2
458 = c^2
The square root of 458 is 21.4.
what is the vertex of the parabola? y + 1 = -1/4 (x-2)^2
Answer: i took a screen shot hope it helps
Step-by-step explanation:
X-15>-20
Please help first answer gets brainliest
Answer:
x > -5
Step-by-step explanation:
hope this helps :)
Answer:
x>-5
Step-by-step explanation:
X-15>-20
Add 15 to both sides;
x-15+15=>-20+15
simplify
x>-5
Hope this helped!
Helped by none other than the #QUEEN herself aka # DrippQueenMo
In what form is the following linear equation written?
3.x - 2y=4
A. Rise-run
B. Standard
C. Slope-intercept
D. Point-slope
Answer:
Step-by-step explanation:
The format of the "standard equation of a line" is Ax + By = C
Yesterday, there were 100 problems assigned for math homework. Deb did 70% of them
correctly. How many problems did Deb get right?
problems
Submit
Worltout
Answer:
70 problems are correct
Step-by-step explanation:
(05.01)
Compare the table and equation.
ху
1 3
26
3 9
Equation: y = 4x
Which representation has the greatest slope?
The equation has the greatest slope.
O The table has the greatest slope.
O The table and equation have the same slope.
O Their slopes cannot be determined.
Solve the linear equation: 5 - x = (x/2)
Hi
5-x = (x/2)
5 = (x/2) +x
10 = x+2x
10 = 3x
10/3 = x
let's check :
5- 10/3 = 15/3 -10/3 = 5/3
(10/3) /2 =10/3 * 1/2 = 10/6 = 5*2/3*2 = 5/3
The hanger image below represents a balanced equation. Select an equation that represents the image. Choose 1 answer: Choose 1 answer: (Choice A) A 9=2-c9=2−c9, equals, 2, minus, c (Choice B) B 9=2+c9=2+c9, equals, 2, plus, c Find the value of ccc that makes the equation true. c=c=c, equals
Answer:
3333.4
Step-by-step explanation:
bc i said so
Answer:
ion lolz 7.4
Step-by-step explanation:
Will mark as brainliest :)! Suppose that there were a strong correlation between the variables d and t.
Which of these is a true statement?
A. d must not cause f.
B. fmust cause d.
c. d may cause f.
D. d must cause f.
Answer:
c
Step-by-step explanation:
A strong correlations shows evidence of a relationship between the two quantities. It does not necessarily indicate that a change in one variable is causing a change in the other one. There MAY be a causal relationship, but the correlation, by itself, does not prove that.
