Answer: 57
Step-by-step explanation:
The value of the angle ∠r is equal to 56.63°.
What is trigonometry?The branch of mathematics that sets up a relationship between the sides and the angles of the right-angle triangle is termed trigonometry. The trigonometric functions, also known as a circular, angle, or goniometric functions in mathematics, are real functions that link the angle of a right-angled triangle to the ratios of its two side lengths.
Given that in ΔPQR, p = 8.5 cm, q = 1.7 cm and r=7.7 cm. The value of angle ∠r will be calculated as,
r² = p² + q² -2pqcos(r)
(7.7)² = (8.5)² + (1.7)² - 2 x 8.5 x 1.7cos(r)
59.29 -75.14 = -28.9cos(r)
cos(r) = 15.85 / 28.9
cos(r) = 0.55
r = cos⁻¹(0.55)
r = 56.63°
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ali is paid $200 for working 8 hours.How much is he paid for working 6 hours?
Answer:
$150
Step-by-step explanation:
i don’t understand, explain also
Answer:
32
63
Step-by-step explanation:
m<BCA=180-148-32 Subtract 180-148 b/c x<BCA is along the straight line ACD. A straight line will have an angle of 180 degrees.
m<CAB=180-32-85=63 All triangles have angles which add up to 180 degrees. Subtract 32 and 85 from 180 to get 63.
Step-by-step explanation:
148 + x = 180
x = 180 - 148
x = 32
Find m<CAB basically means find the measure of the angle of A ( m<A )
m<B + m<A + x = 180
85 + m<A + 32 = 180
117 + m<A = 180
m<A = 180 - 117
m< A = 63, so m<CAB = 63
And m<BCA means find the measure of angle C(m<C) or as we did it earlier as x, which is the same thing.
So m<BCA = 32
How do you find the height of a parallelogram without the area of it?
Answer:
See: https://brainly.in/question/12682555
Step-by-step explanation:
The link provided will take you to a differently worded explanation from another user.
You may see the "slant" referred to as a "hypoteneuse", as the shape created by the line of height(or altitude) is a right triangle. Given the base of the triangle and the "slant" or "hypoteneuse", format the equation (a²+b²=c²)-where a represents the height(altitude), b represents the base, and c represents the slant(hypoteneuse)- to fit your needs:
c²-b²=a². From this point, find the square root(√) of a. If it cannot be simplified further, then (√a) is your solution.
Resuelve
14 - 15 – (-13) + 12 – (-11)
. 20 – 40 – (- 50) + 70 – 100
HELP, i’m struggling
Answer:
x = 14
Step-by-step explanation:
(3x + 8) = (4x - 6)
3x + 8 = 4x - 6
+6 +6
3x + 14 = 4x
-3x -3x
14 = 1x
x = 14
plug 14 into the x, then solve it urself
The shampoo Eva likes to use costs $6 for a 24-ounce bottle. The conditioner she likes to use costs $12 for a 30-ounce bottle. How much more per ounce does her conditioner cost than her shampoo?
Answer:
0.15
Step-by-step explanation:
6 divided by 24 equals 0.25
12 divided by 30 equals 0.4
0.4 minus 0.25 is 0.15
The manager of a company wants to find out how many hours the employees worked in the previous month. Which of the following is a statistical question that the manager can ask? A. How many employees are there in the company? B. Which employee worked the most hours in the last month? C. How many employees worked more than 35 hours this week? D. How many hours does each employee work in a week?
Answer:
B. How many hours does each employee work in a week?
Step-by-step explanation:
A statistical question is one that has a variable answer.
The answers to the question, "How many hours does each employee work in a week?" vary by employee, so it is a statistical question.
I hope i helped
help!! :( what is the equation for this circle using the center and radius?
Answer:
Well Circumference = πr^2, but I don't know what you're asking for?
The amount of a certain radioactive substance decreases by 15% every hour. If a sample starts with 100 g of this radioactive substance, which function represents the amount of radioactive substance left after x hours?
A- f(x)=100(0.15)^x
B- f(x)=100(0.85)^x
C- f(x)=100(1.15)^x
D-f(x)=100(1.85)^x
Answer:
A
Step-by-step explanation:
I took the test now that is what I got.
Hope this helps.
The function that represents the amount of radioactive substance left after {x} hours is : f(x)=100(0.15)ˣ.
What are algebraic expressions?In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.Mathematical symbols can designate numbers (constants), variables, operations, functions, brackets, punctuation, and grouping to help determine order of operations and other aspects of logical syntax.Given is that the amount of a certain radioactive substance decreases by 15% every hour. A sample starts with 100 g of this radioactive substance.
The function that represents the amount of radioactive substance left after {x} hours is -
f(x)=100(0.15)ˣ
Therefore, the function that represents the amount of radioactive substance left after {x} hours is : f(x)=100(0.15)ˣ.
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What's the answer?
A) Y= 2x
B) Y= -2x - 4
C) Y= 2x - 2
D) Y= 2x + 2
Hi!! I'd love to help!!
The slope of your points is 2.
When we use the slope intercept formula (y=mx+b), we get y=2x-2.
So the answer to your question is C
Hope this helps!! Let me know if you need any more help or have questions/concerns.
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calculator
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Given that AB is a line segment and the angle y = 47°,
work out the value of the angle marked X.
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X
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B.
A
Check
The diagram is not drawn to scale.
O
X =
Skir
Answer:
ddgklkmbxawryunnvxzfdszAaefgu
The perimeter of the rectangle is 28 units.
What is the value of w?
5 units
7 units
74 units
15 units
Answer:
5 units is the correct value of W
00:00
Figure D'EFG' is a dilation with center (0,0) of figure DEFG. What is the scale factor? Enter your answer in the box.
ILL GIVE BRAINLIST BUT PPLEASE HELP
Step-by-step explanation:
To work out the scale factor, divide one of the sides from the larger shape from the smaller shape so:
15/6 = 2.5
So your scale factor would be 2.5
And to check this, multiply 2.5 by 6 and u should get 15, so you know it is correct! :)
Hank's car travels 600 feet in 20 seconds. Andy's motorcycle travels 300 feet in 12 seconds. Which is faster, the car or the motorcycle? Explain your reasoning.
Answer:
the car travels faster
Step-by-step explanation:
Since the motorcycle has traveled 300 feet, and the car has traveled 600 feet, we will divide 600 by 2
600 divided by 2 = 300
Hank would have traveled 300 feet in 10 seconds
Andy traveled 300 feet at 12 seconds
Therefore Hanks car travels faster
Answer:
The car travels faster
Step-by-step explanation:
600 ft per 20 secs
How many feet in one sec?
600/20 = 30
Hank's car = 30 feet per second
300 feet in 12 sec
How many feet in one sec?
300/12 = 25
Andy's motorcycle = 25 feet per second
one of the factor of 36 is
(FOR BRAINLIEST!!!)
Type the correct answer in the box.
The line of best fit for this scatter plot shows the relationship between the average temperature and the monthly electricity bill at Jenny's house.
Answer:
Around 200 Dollars
Hope it helps
Answer:
$200
Step-by-step explanation:
PLZ HELP I WILL GIVE BRIANLY!
In a school, 4 out of every 7 students are girls. if there are 84 students at the school, how many are boys. AND SHOW WORKING
Answer:36
Step-by-step explanation:
[tex]\frac{4}{7} =\frac{48\\}{84}[/tex]
for every 7 students there are 4 girls, so for every 84 there must be 48
7*12=84
4*12=48
so, in all 84 students there are 48 girls
so amount of boys=84-48=36
there are 36 boys
1) You can spend at most $24 at the fair. Game
tickets cost $2 each, and ride tickets cost $4
each. You want to buy at least 3 game tickets
and more than 2 ride tickets. Write a system
of linear inequalities that represents the
situation. How many of each ticket can you
buy?
Answer:
2x+4y= 24
x≥3
y≤2
Step-by-step explanation:
Given data
total expenses= $24
let the number of tickets be x
and the number of rides be y
Tickets cost $2 each, and ride tickets cost $4
Hence the expression for the situation is given as
2x+4y= 24
x≥3
y≤2
percentages
and please explain how to do this because 8 days left for my final exams
i will make you brainliest
Answer:
1)50% , 2) 25% 3) 350%
Step-by-step explanation:
pls follow me not because I am genius but because I am a swager SWAG
Answer:
1. 50%
2. 25%
3. 350%
4. 125%
5. 30%
6. 45%
7. 59%
8. 380%
Step-by-step explanation:
to find the precentage of a fraction u have to try and make the bottom number 100, 1000, 10000 etc
to do that like the first 1 u do 2 x ? = 100 the answer is 50
Rule what u do to the bottom u have to do to the top
now that u multiply 50 down to make 100 u have to do as the rule say what u need to do is also multiply 1 to 50 to get the answer
as u might know that 100 mean % so u pet the top number and then %
who else is being stressed of school right now??
i am so much can someone give advice on how to stop it??
:)
:)
:)
Answer:
Finish your homework first (EVERYTHING) before videogames
Step-by-step explanation:
Is this number prime or composite
Answer:
no
Step-by-step explanation:
its composite
Answer:
Composite
Step-by-step explanation:
70 is a composite number as it has factors other than 1 and itself.
A regular hexagon is rotated in a counterclockwise direction about its center. Determine and state the minimum number of degrees in the rotation such that the hexagon will coincide with itself.
The minimum number of degrees in the rotation such that the hexagon will coincide with itself is 60°
What is hexagon?Hexagons are six-sided polygons in geometry. A hexagon is said to be a regular hexagon if all of its sides and angles have identical lengths. To put it another way, a regular hexagon's sides are congruent.
Given that, Around its center, a regular hexagon is rotated counterclockwise.
We are aware that a hexagon has six sides.
There are also 360 degrees.
According to the data given, the calculation is as follows:
= 360 /60
= 60 degrees.
Therefore, we may say that the rotation must be at least 60 degrees in total.
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Pls help ASAP!!!!!!!!
Pls help
I will cash app if I get it right
Answer:
39 degrees
Step-by-step explanation:
97+44= 141
141 - 180 = 39
Here is a list of numbers.
32 29 30 37 34 33 31
Tanya thinks that to work out the median, she simply needs to find
the middle number. So she says that “37" is the median for this list of numbers.
Tanya's answer is not correct.
a) Describe what is wrong with her method.
b) Work out the median of the numbers in the list.
Answer:
a). To find the median from a set of numbers, you need to arrange them from ascending order (smallest to biggest), and then you need to find the number in the middle
b). 32
Step-by-step explanation:
b). Smallest to biggest
29, 30, 31, 32, 33, 34, 37
From the set of numbers given, we can clearly see that 32 is in the middle.
arm-Up
Active
Identifying the System of Measurement
Check
Sort the units of measure into the appropriate system.
Customary System
Metric System
miles
ounces
deciliters
kilometers
centigrams
cups
customary system; miles, cups, ounces
metric system; deciliters, kilometers, centigrams
Answer:
just here to say the guy above me is correct
Step-by-step explanation:
did it on edge 2021 :D
Given that the random variable X = number of days a student sleeps in during the week, what is the correct notation for the probability that a student will sleep in at least 3 days?
Answer:
X > 3/7Step-by-step explanation:
X > 3/7
We know that the student sleeps in at least 3 days, but we don't know what the exact number is, we use an inequality where X is greater than or equal to 3 out of the 7 days.
can someone help me find the prerimter of this shape
Answer:
114
Step-by-step explanation:
If this answer helped you then please mark it as brainliest so I can get to the next rank
Maria's job pays her $1500 a month what is her gross weekly wage
Answer:
annual: $18000
weekly: $346.15
.
Solve the equation below, then record your answer in the space provided.
negative 5 multiplied by 6 equals.
Record your answer and fill in the bubbles on your answer document. Be sure to indicate whether it is positive or negative and to use the correct place value.
Answer:
5 5.5 x.6xy67
ykfjgbv:bcjh
evaluate -7 5/8 + (-6 1/4)
Answer:
exact form:
-111/8
Decimal form:
-13.875
Mixed Number Form:
-13 7/8
Answer:
-5.875
Step-by-step explanation:
primero se resuelve el paréntesis
1/4 =0.25
y se multiplica por el -6
0.25x-6= -1.5
luego se resuelve el otro lado
primero dividimos
5/8=0.625
y se multiplica por -7
0.625x-7= -4.375
y para finalizar se suman los dos lados
-4.375 + -1.5
= -5.875