The value of sin (90° - 9) is 11/15, Option A is correct.
What is Trigonometry?Trigonometry is a branch of mathematics that studies relationships between side lengths and angles of triangles.
Using the trigonometric identity sin(90° - θ) = cos(θ), we have:
sin(90° - 9) = cos(9)
To evaluate cos(9) in degrees,
cos(θ) = cos(π/2 - θ)
Substituting θ = 9 degrees, we get:
cos(9) = cos(π/2 - 9°)
Using radians, π/2 - 9° = 1.4661
cos(9) = 0.9781
Therefore, sin(90° - 9) = 0.9781, which is equivalent to 11/15 when simplified.
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A laptop has a listed price of $667.95 before tax. If the sales tax rate is 7.75%, find the total cost of the laptop with sales tax included.
Round your answer to the nearest cent, as necessary.
Answer:
$719.72
Step-by-step explanation:
i need help answering this but also how to do it like step by step. i don’t understand this. (9 + 7x) - 7x
Answer: 9
Step-by-step explanation: so first you remove the ( ) because they’re useless in this then once you remove then Since two opposites add up to zero, remove them from the expression then you only get left with 9.
What is the area of the rhombus (figure only show one part of the diagonals)
Answer:
60 cm^2 (dark blue)
Step-by-step explanation:
Since a rhombus's diagonal bisect each other, the diagonal's full length is 10 and 12. From there the area is 10*12 / 2 which is 60
The rivers depth is three meters greater than its width. two time the rivers depth is equal to six meters more than twice its width.
PLZ write a system of equations and show ALL work
WOULD APPRECIATE A LOT
Answer:
d = w + 3 (first equation)
2d = 2w + 3 (second equation).
The second equation is equivalent to the first one.
In other words, two equations carry the same information as the first one, not more.
In the language of linear algebra, the system is dependent
pls answer correctly or i report you i really need to know this
the correct answer gets brain.liest
so answer correctly
pls answer correctly
pleaaaaaaaase
Answer:
final answer is d
Step-by-step explanation:
explanation multiply exponent on the outside by the inside.
btw you dont have to give me brainliest i dont really care for it i just like helping hope it's right good luck.!!;)
How do I do this I need help I don’t wanna fail this quarter!!!!
Answer:
SSA
Step-by-step explanation:
Side Side Angle
Explain:
10 to the 3rd power
Answer:
1000
Step-by-step explanation:
just trust me <3
Two rabbits land on deserted Salt Island; they breed,and the number of rabbits on the island doubles every 4 weeks. Two other rabbits arrive on deserted Pepper Island; these rabbits triple every 4 weeks. At the end of the 12 weeks, one python arrives on each island. As each python grows, the number of rabbits it can eat each week doubles. The first week, each eats 1 rabbit, the second week, 2, and so forth. How long will it take the python to wipe out the rabbits on each island?
Answer:
It will take it 7 weeks
Step-by-step explantion
Great ran a one mile race in 5 minutes. Inex ran a quarter mile in 1 minute and 20 seconds.
If Inez ran the mile at her quarter mile pace of 1 minute and 20 seconds, how fast would she run the mile? Write your answer in minutes and seconds. (There are 4 quarter miles in a one mile race). 1._______)
2. Which of the two runners had the fastest time? ______
3. How much faster was her mile in seconds? _______
Answer:
1. The time it would take Inex to run 1 mile is 5 minutes 20 seconds
2. Great has the fastest (lowest) time
3. When running a mile Great is faster than Inex by 20 seconds
Step-by-step explanation:
1. The distance Great ran in 5 minutes = 1 mile
The distance Inex ran in 1 minute and 20 seconds = A quarte mile = (1/4) mile
We note that 1 minute and 20 seconds = 4/3 minutes
Given that the time Inex ran 1/4 mile = 4/3 minutes...(1)
We have;
The time it would take Inex to run 1 mile is given as follows;
1 = (1/4) ÷ (1/4)
1 mile = ((1/4) ÷ (1/4)) mile = (1/4) mile/(1/4)
The time to run 1 mile = The time to run (1/4) mile/(1/4) = 4/3 minutes/(1/4) (by dividing both sides of equation (1) by (1/4),
4/3 minutes/(1/4) = 4 × 4/3 minutes = 16/3 minutes = [tex]5\frac{1}{3}[/tex] minutes= 5 minutes 20 seconds
The time it would take Inex to run 1 mile = 5 minutes 20 seconds
2. Given that Great ran a one mile race in 5 minutes, and Inex ran the same one mile race in 1 minute and 20 seconds, Great has the fastest (lowest) time
3. The amount faster Great's time is faster than Inex's time to run one mile = 5 minute 20 seconds - 5 minutes = 20 seconds.
Help ASAP I give you a cookie after you answer:)
what is the answer to these questions I will give brainly
Answer:
1) 12 2) 1/8
Step-by-step explanation:
1) 3 times 4 = 12
2) 1/2 times 1/4 = 1/8
The graph shows the function f(x). What is the function's average rate of change from x = 0 to x = 2? Enter your answer, as a simplified fraction, in the boxes.
Answer:
It's been awhile since I've done this but wouldn't it be -2x
Step-by-step explanation:
What is the true solution to the equation below?
2 In eln2x - In eln 10x = In 30
X = 30
X= 75
X = 150
X=300
Answer:
x = 75 hope this helped
Step-by-step explanation:
The true solution to the equation is,
⇒ x = 75
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
We have to given that;
The expression is,
⇒ [tex]2 ln e^{ln2x} - ln e^{ln10x} = ln 30[/tex]
Now, We can simply as;
⇒ [tex]2 ln e^{ln2x} - ln e^{ln10x} = ln 30[/tex]
⇒ 2 ln 2x - ln 10x = ln 30
⇒ ln (2x)² - ln 10x = ln 30
⇒ ln (2x)² / 10x = ln 30
⇒ 4x² / 10x = 30
⇒ 4x = 300
⇒ x = 75
Thus, The true solution to the equation is,
⇒ x = 75
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Help I dont understand the Problem
David y Angie tienen dos cartulinas iguales. David corta la suya en 3 trozos iguales y Angie la corta en 7 trozos. Los dos usan 2 de sus trozos para hacer un muñeco. Que fracción de cartulina ha usado David?¿Y Angie?¿Quien ha usado mas cartulina? Alguien me lo dice por fa es que no lo entiendo
Answer:
(i) David ha empleado [tex]\frac{2}{3}[/tex] de la cartulina.
(ii) Angie ha empleado [tex]\frac{2}{7}[/tex] de la cartulina.
(iii) David ha usado más cartulina.
Step-by-step explanation:
El problema indica que David y Angie emplean una cartulina del mismo tamaño cada uno. David corta la suya en 3 pedazos iguales, mientras que Angie obtiene 7 pedazos iguales. Finalmente, cada uno emplea dos de sus pedazos. A continuación, respondemos a las preguntas del enunciado:
(i) ¿Qué fracción de cartulina ha usado David?
La fracción de cartulina empleada por David es igual a los pedazos utilizados divididos por el total de pedazos. Esto es:
[tex]x = \frac{2}{3}[/tex]
David ha empleado [tex]\frac{2}{3}[/tex] de la cartulina.
(ii) ¿Qué fracción de cartulina ha usado Angie?
Aplicando el mismo procedimiento del punto anterior, tenemos que:
[tex]x = \frac{2}{7}[/tex]
Angie ha empleado [tex]\frac{2}{7}[/tex] de la cartulina.
(iii) ¿Quién ha usado más cartulina?
La persona que ha usado la mayor cantidad de cartulina es aquella que tiene el menor denominador. Por tanto, David ha usado más cartulina.
Is it A. , B. , C. , D.
And show your work
Answer:
C
Step-by-step explanation:
64° (3x + 1)º Find the value of x. I need help!!
A 21
B 27
C 51
D 14
Answer:
Take away 1 from either side so the equation becomes 63=3x then divide both sides by 3 so it becomes 21=x which is your answer (option A)
Step-by-step explanation:
Which of the following measures of variability can be used to compare two data sets? Select all that apply.3 Answers PLZ FAST ASAP
A: Mean
B:Interquartile range
C.Median
D: Mean Absolute Deviation (MAD)
E: Range
Answer:
Its Interquartile range, Mad and range
Step-by-step explanation:
Can you guys help me with this
11. f = 180-(75+65)
f = 180 - 140
f = 40°
12. x = 62+51
x = 113
y = 180- 113
y = 67°
13. x = 360-(100+95+60)
x = 360 - 255
x = 105°
PLEASE MARK THIS ANSWER AS BRAINLIEST
Answer:
Answers are given in the above photos.Hope that will help you surely.
Thank You.
Is this right? Please hurry im trying to get all my work done
Answer:
I’m pretty sure it’s right.
Step-by-step explanation:
Eighteen students decide they don't want to be
rescued and want to continue to live in the
jungle. If this represents 40% of the students,
how many students want to be rescued?
Type your answer into the box to continue.
Answer: 45
Step-by-step explanation:
18 = 40% N
18 = 0.4 N
Divide both sides by 0.4
N = 45
There are 45 students want to be rescued.
What is mean by Percentage?A number or ratio that can be expressed as a fraction of 100 or a relative value indicating hundredth part of any quantity is called percentage.
Given that;
Eighteen students decide they don't want to be rescued and want to continue to live in the jungle.
And, This represents 40% of the students.
Now,
Let the number of students want to be rescued = x
So, We can formulate;
⇒ 40% of x = 18
Solve for x as;
⇒ 40/100 × x = 18
⇒ 40x = 1,800
⇒ x = 1800/40
⇒ x = 45
Thus, The number of students want to be rescued = 45
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I don’t get this can someone explain please
Answer:
2^4/4^2 will be 1, I will explain after answering,
2 x 3^1 = 6
(4 - 2) ^2 = 4
First. Evaluate the exponents in the fraction above
2 x 2 x 2 x 2 = 16
4 x 4 = 16
and 16 over 16 would equal 1 whole
3 to the power of 1 means just 3 so 2 x 3 = 6 (easy multiplication)
Evaluate in the parenthesis first: 4 - 2 = 2 then 2 to the power of 2 would be 2 x 2 = 4
what is the answer to:x-57.6=24.3
Answer:
what
Step-by-step explanation:
Answer:
Pleas give Brainliest
x=81.9
Step-by-step explanation:
Add 57.6 to both sides of the equation.
x=24.3+57.6
Add 24.3 and 57.6.
x=81.9
A fish tank has 9 goldfish, 6 tetras, 5 snails and 3 platies. What is the ratio of tetras to platies
Answer:
6:3
Step-by-step explanation:
6 tetras and 3 platies
Jill is driving to her parent's house at a rate of 70 miles per hour. Which equation represents the relationship between the distance, d, to Jill's parents house and the time, t, it will take her to arrive at her parent's house?
Answers:
A: d=70t
B: d+70=t
C: t=70d
D: t+70=d
Answer/Step-by-step explanation:
D = distance
T = Time
You are trying to find the Time so,
T = ???
T = 70 ?
So you are driving PER hour so --> multiply
T = 70d
Hope this helped!
can someone help me with this please???
Answer:
diarrhea
Step-by-step explanation:
You and a friend are trying to fill your pools with water. Your pool originally had 10 gallons of water, and the hose is filling it at rate of 2 gallons per minute . Your friends pool originally had 4 gallons of water in the pool, and their hose is filling the pool at a rate of 3 gallons per minute create a system of equations using the information from the problem
Answer:
y = 2x + 10
y = 3x + 4
Step-by-step explanation:
2x + 10 = 3x + 4
10 = x + 4
x = 6
In the diagram, △ABC∼△CDE. Write an equation for line k
Answer:
Step-by-step explanation:
Line AB is parallel to line CD (k) so they have the same slope.
slope=m=(y2-y1)/(x2-x1)
m=(6-0)/(4-0)
m=6/4=1.5
y=mx+b, we know m=1.5 so
y=1.5x+b, and we know it passes through point (4,0) so we can solve for b
0=1.5(4)+b
0=6+b
b=-6 so line k is
y=1.5x-6
I have alot of missing assignments I have to get done I have 5 more
Answer:
26741 and 12
Step-by-step explanation:
(1)
The area ( A) of a rectangle is calculated as
A = length × width , then
A = 221 × 121 = 26741
(2)
The area (A) of a triangle is calculated as
A = [tex]\frac{1}{2}[/tex] × base × height , then
A= [tex]\frac{1}{2}[/tex] × 8 × 3 = 4 × 3 = 12
Please help, I don't understand- will give brainliest and 50 coins
Answer:
meh
14fri
Step-by-step explanation: