Answer:
Step-by-step explanation:
sin θ=1/4,tan θ>0
so θ lies in first quadrant.
cos θ=√(1-sin²θ)=√(1-(1/4)²)=√(1-1/16)=√(15/16)=√15/4
[tex]2cos^2 \frac{\theta}{2} =1+cos \theta[/tex]
[tex]2~cos^2\frac{\theta}{2} =1+\frac{\sqrt{15} }{4} =\frac{4+\sqrt{15}}{4} \\cos~\frac{\theta}{2} =\sqrt{\frac{4+\sqrt{15} }{4 \times 2} } \\cos\frac{\theta}{2} =\frac{\sqrt{8+2\sqrt{15}} }{4}[/tex]
If you could please answer this that would be awesome!
Please graph it!
The graph is attached with the answer, This is looking like a horizontal staircase
What is a Step Function ?A step function is a piece wise function whose all pieces are horizontal line or a point.
It is given in the question to graph the interval
-2 ≤x≤2
for f(x) = |x+3|
-2 1
-1 2
0 3
1 4
2 5
The graph is attached with the answer.
This is looking like a horizontal staircase
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Se encarga del estudio de los triángulos rectilíneos
Answer:
Rectilíneo generalmente indica una figura representativa de hacer una línea recta oa lo largo de una línea recta o en una línea recta. En términos matemáticos, es una figura plana delimitada por segmentos de línea. En otras palabras, una figura plana totalmente compuesta de segmentos de línea se conoce como figura rectilínea. Ahora bien, si te preguntas ¿qué es una figura plana? Entonces, sepa que cuando ponemos la punta de un lápiz en una hoja de papel y nos movemos de un punto a otro, sin levantar el lápiz, entonces las formas que se forman son lo que llamamos curvas planas.
Which expression is equivalent to (15²)(15^-7)?
A 15^-21
B -15^4
C 1/15^4
D 1/15^-4
Answer:
there is no answer
Step-by-step explanation:
If you multiply 15^x by 15^y, the answer is 15^(x+y) so 2 plus -7 is negitive 5.
but there is no answer equal to this.
The equivalent expression will be;
⇒ 15⁻⁵
What is mean by Subtraction?Subtraction in mathematics means that is taking something away from a group or number of objects. When you subtract, what is left in the group becomes less.
Given that;
The expression is,
⇒ (15²) × (15⁻⁷)
Now,
Since, The expression is,
⇒ (15²) × (15⁻⁷)
Hence, We solve as;
⇒ (15²) × (15⁻⁷)
⇒ 15²⁻⁷
⇒ 15⁻⁵
⇒ 1 / 15⁵
Thus, The equivalent expression is,
⇒ 15⁻⁵
⇒ 1 / 15⁵
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in a club there are 7 women and 5 men. A committee of 3 women and 2 men is to be chosen. How many different possibilities are there?
The method for calculating how many arrangements are feasible when only a few items are chosen from a collection of items that are unique is as follows:
[tex]^nC_k=\frac{n!}{k!(n-k)!}[/tex]
Where:
n – the sum of all the elements of a set
k – the number of selected objects (the order of the object may change)
! – factorial
For instance, 3!=1×2×3
So, according to the problem, there are [tex]^7C_3[/tex] possible groups of 3 women out of 7 women. And [tex]^5C_2[/tex] possible groups of 2 men out of 5 men.
Combining we get that there are [tex]^7C_3 ~^5C2[/tex] groups of 3 women and 2 men out of 7 women and 5 men.
Therefore, there are [tex]^7C_3 ~^5C2=\frac{7!}{3!4!}\frac{5!}{2!3!}= 350[/tex] possibilities.
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If y varies directly as the square of x and Y--54 when x-9, then -- when x-6.
True or false
Answer:
24.012
Step-by-step explanation:
y=kx^2
54=81k
k=54/81
k=0.667
y=kx^2
y=0.667×36
y=24.012
its false ik this because im one of the boyzz
the equation of the line that goes through (3, 0) and (6, 2) in slope-intercept form???
the slope intercept form of the given points is y = 2/3 (x-3).
What is Straight Line?A straight line is an endless one-dimensional figure that has no width. It is a combination of endless points joined on both sides of a point. A straight line does not have any curve in it.
Here, given passing points
(3, 0) and (6, 2)
We know that,
(y - y₁) = (y₂-y₁)/(x₂-x₁) (x - x₁)
(y - 0) = (2-0)/(6-3) (x-3)
y = 2/3 (x-3)
Thus, the slope intercept form of the given points is y = 2/3 (x-3).
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Arturo worked a 40-hour week at $12 per hour. He then received a raise of $1 per hour and worked a 30-hour week. How much more money did he receive for the first week of work than the second?
Arturo receives $90 more in the first week of work than the second.
What are Working Hours?The time a person spends engaged in compensated work is referred to as working time.
Given,
First Week Working hours = 40 hours, per hour rate = $12
The second-week working hours = 30, per hour rate = $13 (With raise of $1)
Calculation of Wages
First Week wages = Total Weekly Hours × Per Hour rate
= 40 × 12 =$480
Second Week wages = Total Weekly Hours × Per Hour rate
= 30 × 13 =$390
The difference between the First week's wages and the Second week's wages is $90 ($480 - $390).
Thus, Arturo earn $90 more in the first week as compared to the second week.
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abcdefghijklmnopqrstuvwxyz
answer:
Now I know My ABC next time won't you sing with me.
You are creating a table that you want to use to measure the temperature inside the arena. You have made a few mistakes.
Highlight the errors in the table below.
Answer + Step-by-step explanation:
How much vinegar would be in each container if the total amount in all cups were redistributed equally between the 8 containers?
Answer:
Step-by-step explanation:
1/8
If the legs of a right triangle are 8 and 10, find the length of the hypotenuse.
Answer:
Given :-
Two legs of a rt. triangle : 8 and 10 respectively.
To find :-
Length of the hypotenuse
Solution :-
Using Pythagorean Theorem;
(hypotenuse)² = (8)² + (10)²
= 64 + 100
hypotenuse = √164
= 12.8 units
Answer:
12.80
Step-by-step explanation:
We have to use the Pythagoras theorem to find the value of the hypotenuse.
Let the value of the hypotenuse be c.
Let us use the below formula to find the length of the hypotenuse.
a² + b² = c²First, let us replace a and b with 8 and 10 ( the lengths of the legs of the right triangle) with a and b.
a² + b² = c²
8² + 10² = c²
64 + 100 = c²
And now let us solve the above and find the value of c.
164 = c²
√164 = c
12.80 = c
Therefore, the length of the hypotenuse is:
12.80 units
Find the distance between the points (-4, 2) and (2, -1).
Give an exact answer in simplest radical form. Do not round.
Answer:
[tex]3 \sqrt{5} [/tex]
Step-by-step explanation:
[tex] \sqrt{ {( - 4 - 2)}^{2} + {(2 - ( - 1))}^{2} } = \sqrt{45} = 3 \sqrt{5} [/tex]
The graphs below have the same shapes. What is the equation for the red graph?
The function g(x) is derived by translating the function by the three units, according to the graph.The equation for the red graph will be,g(x) = x²+3
What is a graph?A diagram depicting the relationship between two or more variables, each measured along with one of a pair of axes at right angles.
From the graph, it is obtained that the function g(x) is obtained by translating the function by the three units.
Hence,the equation for the red graph will be,g(x) = x²+3
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The distance AB= [?] Round to the nearest tenth.
Answer:
3.6Step-by-step explanation:A = ( -2, 1 )
B = ( 1, -1 )
[tex]\boxed{\bf x_1 : - 2}[/tex] [tex]\boxed{\bf x_2 : 1}[/tex]
[tex]\boxed{\bf y_1 : 1}[/tex] [tex]\boxed{\bf y_2 : - 1}[/tex]
______________________________
[tex]\sf d = \sqrt{(x_2 -x_1) ^{2} + ( y_2 - y_1) ^{2} } [/tex][tex]\sf d = \sqrt{(1 - ( - 2)) ^{2} + ( - 1 - 1) ^{2} } [/tex][tex]\sf d = \sqrt{ {3}^{2} + {( - 2)}^{2} } [/tex][tex]\sf d = \sqrt{(9 + 4)} [/tex][tex]\sf d = \sqrt{13} [/tex][tex]\sf d = 3.6[/tex]______________________________
How would you classify the following expression by the number of terms?
42−8+4
Solution
First, consider how many terms are in the expression.
This expression has ______ terms.
Therefore, this expression is called a trinomial.
Classify the expression by the number of terms: 43−8
Solution
First, consider how many terms are in the expression.
This expression has ____ terms.
The answer is a ______. (monomial, binomial, or trinomial)
Classify the expressions by the number of terms.
2+3+9 = (monomial, binomial, polynomial or trinomial)
6= (monomial, binomial, polynomail or trinomial)
Answer:
1. This expression has 3 terms.
2. This expression has 2 terms
3. Solution 43-8=35
3. binomial
2+3+9= trinomial
6=monomial
Step-by-step explanation:
If the formula for an arithmetic sequence is a subscript n equals 11 plus 6 left parenthesis n minus 1 right parenthesis, then what term in the sequence is the value 107?
An arithmetic sequence is a sequence in which the difference between any two consecutive terms of the sequence is equal. The number of term 107 is 17th.
What is Arithmetic Sequence?
An arithmetic sequence is a sequence in which the difference between any two consecutive terms of the sequence is equal.
a_n = a₁ + (n-1)r
where,
a_n is the nth term of the sequence,
a₁ is the first term of the sequence,
r is a common difference between every two terms.
Given the formula for the nth term of the arithmetic sequence is,
[tex]a_n = 11+6(n-1)[/tex]
Now, the number of term that 107 will be,
107 = 11 + 6(n-1)
96 = 6(n-1)
16 = n- 1
n =17
Hence, the number of term that 107 is 17.
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Martha is late for class, so she races her 75 kg body up a 4.0 meter flight of stairs in only 2.3 seconds. What is Martha’s power?
Answer:
[tex]1.3\cdot 10^3\text{ J}[/tex]
Step-by-step explanation:
Power is defined by work over time. In physics, work can be defined as the energy transferred over from an applied force over some distance. As a formula:
[tex]W=Fd[/tex], where F = force applied and d = distance that force is applied over.
*It is worth noting that F must be parallel to the distance travelled. If it is perpendicular, no work is done, and if it is at an angle, find the parallel component and use that for F.
In this case, the force applied must counter the force of gravity on Martha, which is given by [tex]F_g=mg[/tex], where m = Martha's mass and g = gravitational constant 9.8 m/s/s. Therefore, [tex]F_g=75\cdot 9.8=735\text{ N}[/tex]. Since she raises her body 4.0 meters, the work done must be [tex]W=Fd=735\cdot 4=2940\text{ J}[/tex].
Since power is equal to work over time and t = 2.3 seconds, we have:
[tex]\displaystyle P=\frac{W}{t}=\frac{2940}{2.3}=\boxed{1278\text{ J}}\approx \boxed{1.3\cdot 10^3\text{ J}}[/tex] (to two significant figures)
Exponential function f is represented by the table. x -2 -1 0 1 2 f(x) -46 -22 -10 -4 -1 Function g is represented by the equation. Which statement correctly compares the two functions on the interval [-1, 2]? A. Both functions are increasing, but function f increases at a faster average rate. B. Only function f is increasing, but both functions are negative. C. Both functions are increasing, but function g increases at a faster average rate. D. Only function f is increasing, and only function f is negative.
Both functions are increasing, but function g increases at a faster average rate.
The correct option is (C)
What is an increasing function?If the slope of a function is continuously increasing or constant in an interval, the function is known as an increasing function.
let f(x) = [tex]ab^{x} +c[/tex] and x=0 , f(0)= -10
-10=a+c
Now,
f(x) = -33/5*[tex](\frac{1}{11} )^{x}[/tex] - 17/5
f '(x)>0
So, x is increasing function.
g(x) = -18/3*[tex](\frac{1}{11} )^{x}[/tex] +2
g'(x) =-18[tex](\frac{1}{3} )^{x}[/tex]ln(1/3)
ln 1/3<0
So, g'(x)>0
So, g(x) is an increasing function.
For any x ∈ f(x) and x ∈ g(x)
Since, g increases at a faster rate.
Hence, Both functions are increasing, but function g increases at a faster.
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Find the area of the rectangle.
A rectangle is shown. The left side is labeled with the expression 8 x. The top side is labeled with the expression 7 x plus 1. (1 point)
15x + 1
56x2 + 8x
56x + 8
15x2 + 9x
Answer:
B
Step-by-step explanation:
= (7x+1) • (8x)
= 56x^2 + 8x
Tina's application for graduate school was ranked 54 out of 300 applications. Her twin sister's application to a
different graduate school was ranked 23 out of 175 applications.
a. Which sister had the higher percentile ranking?
b. If you had the data on the cumulative GPA of each student in each school in June 2019, which measure of
average would be the most meaningful - mean, median, mode? Explain
A percentage is a way to describe a part of a whole. The percentile ranking of Tina's sister is higher than her.
What are Percentages?A percentage is a way to describe a part of a whole. such as the fraction ¼ can be described as 0.25 which is equal to 25%.
To convert a fraction to a percentage, convert the fraction to decimal form and then multiply by 100 with the '%' symbol.
A.)
The percentile ranking of Tine is,
Tina's Ranking = [1 - (54/300)] × 100% = 82%
Tina's soster Ranking = [1 - (23/175)] × 100% = 86.85%
Hence, the percentile ranking of Tina's sister is higher than her.
B.) It shows that you can succeed in the graduate examination if you exceed this value.
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If you receive a 15% MARKUP on an item costing $60.00, how much money do you pay in total?
Answer:
The total money we have to pay is $69.
Step-by-step explanation:
MARKUP is the amount added to the cost price.
MARKUP formula = 100*profit / cost
Cost of the item = $60.00
put the value in the formula
15 = 100*profit/60
profit = 60 × 15 ÷ 100 = 9
the total money is cost + profit
which is 60 + 9 = $69.
So the total money we have to pay is $69.
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MATH: Inverse function, 10 pts for your help!
The inverse of g(5) and the inverse of h(x) are 2 and [tex]h^{-1}=\frac{-x-13}{4}[/tex] respectively
Inverse of a function
Given the following coordinates and function
g = {(-6, -5), (2, 5), (5,6), (6,9)}
The inverse of "g" is determined by switching the coordinates to have:
g^-1(x) = {(-5, -6), (5, 2), (6, 5), (9,6)}
Since the value of the y-coordinate when x = 5 is 2, hence g^-1(5) = 2
Given the function expressed as:
h(x) = -4x - 13
y = -4x - 13
Replace y with x
x = -4y - 13
4y = -x - 13
y = (-x-13)/4
[tex]h^{-1}=\frac{-x-13}{4}[/tex]
Determine the composite function [tex](hoh^{-1})(-1)[/tex]
h(h(x)) = h(-4x-13)
h(h(x)) =[tex]\frac{-(-4x-13)-13}{4} \\[/tex]
[tex]h(h(x))=\frac{4x}{4} \\h(h(x)) = x\\h(h(-1)) = -1[/tex]
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What is a real-world example of a relation that is a function?
Question 4 of 40
Which of these is a correct expansion of (3x-2)(2x2+5)?
OA. 3x 2x2 + 3x 5+2 2x² +2.5
B. 3x 2x2 + 3x.5+ (-2) 2x2 + (-2).5
O C. 3x 2x²+(-2) 2x² + 2x².5+ (-2).5
SUBMIT
Answer:
3x* 2x^2 +3x*5 -2 * 2x^2 -2 *5
Step-by-step explanation:
(3x-2)(2x^2+5)
We can FOIL to find the expansion
First 3x* 2x^2 = 6x^3
Outer 3x*5 = 15x
Inner -2 * 2x^2 = -4x^2
Last -2 *5 = -10
Add all the terms together
3x* 2x^2 +3x*5 -2 * 2x^2 -2 *5
Answer:
3x • 2x^2 + 3x • 5 + (–2) • 2x^2 + (–2) • 5
Step-by-step explanation:
other answer was right
Give the following number in Base 16
NO LINKS!!!
Answer:
[tex]\large{\boxed{35_{10} = \sf 23_{16}}}[/tex]
Explanation:
[tex]\sf Given : 35_{10}[/tex]
Compute:
35 ÷ 16 = 2.1875 = 2R3
2 ÷ 16 = 0.125 = 0R2
Jot down the remainders:
3 ↑2 ↑======
[tex]\sf Answer : \ 35_{10} = 23_{16}[/tex]
[tex]\hrulefill[/tex]
Let's look at another example: [tex]\sf 325_{10} = [?]_{16}[/tex]
Compute:
325 ÷ 16 = 20.3125 = 20R5
20 ÷ 16 = 1.25 = 1R4
1 ÷ 16 = 0.0625 = 0R1
Jot down remainders:
5 ↑4 ↑1 ↑=====
[tex]\sf 325_{10} = [145]_{16}[/tex]
[tex]\hrulefill[/tex]
Another example: [tex]\sf 500_{10} = [?]_{15}[/tex]
Compute:
500 ÷ 15 = 33.33... = 33R5
33 ÷ 15 = 2.2 = 2R3
2 ÷ 15 = 0.13... = 0R2
Jot down remainders:
5 ↑3 ↑2 ↑=====
[tex]\sf 500_{10} = [235]_{15}[/tex]
This is general conversation of decimal integer to hexadecimal integer
Let's check
(35)_10This is in decimal form
We know the ways to convert decimal into other forms like
Binary—»Divide by 2Octal—»Divide by 8Hexadecimal —»Divide by 16For third way
35/16=2(2)_16 is one part
Next
35%16=33 is not divisible by 16
i.e
3%16=0Hence
other part is (3)_16
Add (not general addition)
The final answer is
(23)_16. The probability that a patient catches flu is 3/8, the probability that he has a headache
is 5/15, and the probability that he has asthma is 4/9. If we know the fact that the
probability that the patient will have at least one of the illnesses is 3/5, then what is
the probability that he will have flu, headache, and asthma?
Answer:
[tex]\boxed {\frac{343}{360}}[/tex]
Step-by-step explanation:
Probability Rule :
[tex]\boxed {P(A\cup B \cup C) = P(A) + P(B) + P(C) - P(A \cap B \cap C)}[/tex]
Solving :
⇒ 3/5 = 3/8 + 5/15 + 4/9 - P (A ∩ B ∩ C)
⇒ P (A ∩ B ∩ C) = 3/8 + 1/3 + 4/9 - 1/5
⇒ P (A ∩ B ∩ C) = 135/360 + 120/360 + 160/360 - 72/360
⇒ P (A ∩ B ∩ C) = (135 + 120 + 160 - 72) / 360
⇒ P (A ∩ B ∩ C) = 343/360
An economy package of cups has 690 green cups. If the green cups are 30% of the total package, how many cups are in the package?
The total number of cups in the package is 2300.
What is Percentage?Percentage can be calculated by dividing the value by the total value, and then multiplying the result by 100.
Here,
Let the total number of cups in the package be x.
Number of green cup = 690
Weightage of green cup in total = 30%
Now,
30% of x = 690
30/100 X x = 690
x = 690 X 100/30
x = 23 X 100
x = 2300
Thus, the total number of cups in the package is 2300.
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What is the units digit of the sum 1! + 2! + 3! + 4! + 5! + ... + 1000!?
please help if you can
The average of 4 numbers is 9. If one of the numbers is 7, What is the sun of the other 3 numbers?
Answer:
Step-by-step explanation:
Comment
If 4 numbers have an average of 9, then total of the 4 numbers is 4 * 9 = 36.
If one of the 4 numbers is a 7, then
7 + x = 36 where x is the sum of the other 3 numbers.
7 + x = 36 Subtract 7 from both sides
7- 7 +x = 36 - 7
x = 29
Answer 29
Help me with this question please!!!
Answer: 98.5
Step-by-step explanation:
There were 942 people in total, 928 of which recognized Exxon.
So, the probability is 928/942, which is about 98.5%
The probability of random consumers knowing of exon will be 98.5%.
What is probability?Probability helps us to know the chances of an event occurring.
[tex]P =\dfrac{Desired \ Outcomes}{Possible outcomes}[/tex]
Given that:-
928 consumers knew exon and 14 did not.The probability will be calculated as:-
Total consumers are 942 out of which 928 knew exon and 14 did not.
P = 928 / 942
P = 0.985
P = 98.5%
Therefore the probability of random consumers knowing of exon will be 98.5%.
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