Find sin (45+theta) - cos(45-theta) ...?

Answers

Answer 1
sin ( 45° + t ) - cos ( 45° - t ) = 
= sin 45° cos t + cos 45° sin t - ( cos 45° cos t + sin 45° sin t ) =
= sin 45° cos t + cos 45° sin t - cos 45° cos t - sin 45° sin t =
( sin 45° = √2/2,  cos 45° = √2/2 ) =
= √2/2 cos t + √2/2 sin t - √2/ 2 cos t - √2/2 sin t = 0

Related Questions

Find the first,fourth,and tenth terms of the arithmetic sequence described by the given rule. A(n) = 12+(n-1)(3)

Answers

Final answer:

The first, fourth, and tenth terms of the arithmetic sequence A(n) = 12+(n-1)(3) are 12, 21, and 39 respectively.

Explanation:

The arithmetic sequence A(n) given by the rule A(n) = 12+(n-1)(3) represents the value of the nth term in the sequence. The first term of the sequence (n=1) can be found by substitifying n=1 into the equation, which will yield [tex]A(1)=12+(1-1)(3)=12.[/tex] The fourth term A(4) can be found similarly by substituting n=4 into equation resulting in [tex]A(4)=12+(4-1)(3)=21.[/tex]The tenth term A(10) can also be calculated in the similar manner giving [tex]A(10)=12+(10-1)(3)=39.[/tex] So, the first, fourth, and tenth terms of the arithmetic sequence are 12,21, and 39 respectively.

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Name an angle adjacent to ∠DGE

Choices:
∠FGI
∠EGH
∠HGJ

Answers

I hope this helps you




m (DGE)=m (IGJ)


they're interior contrary angle

Answer:

The answer is ∠EGH.

Step-by-step explanation:

In order to determine the correct option, we have to know about adjacent angle.

Two angles are adjacent when they have a common side and vertex (corner point). So in this case, the adjacent angle must have GE or DG common side and the G vertex.

According to the options, the adjacent angle to ∠DGE is:

∠EGH

The other options are not adjacent angles because they do not have a common side.

Finally the correct option is ∠EGH.

davis donates 4/13 of his paycheck to his favorite charity. if he donated $26.80 what is the amount of his paycheck?

Answers

Probably not correct but i think its $87.10.

2614/7=6(47/6b+11/6)

Answers

2614 = 6( 47 + 11 )
   7           6b     6
multiply everything by the lcm of the denominator, 42b
15684 b = 6b( 6( 47 + 11 )
                          6b     6
15684 b = 6b( 282 + 66 )
                      6b      6
15684 b = 284 + 66 b
15618 b = 284
b =  142  = 0.01818
      7809

let Ax=b be any consistent system of linear equations, and let x1 be a fixed solution. show that every solution to the system can be written in form x=x1+x2, where x0 is a solution to Ax=0. show that every matrix of this form is a solution.
...?

Answers

Ax = b and Ax = 0 are mostly similar and both are homogeneous

so if Ax = 0  can be expressed as x1 - x2
any solution of Ax=b can be expressed as x1 + x2 

hope this helps

Suzanne is going to rent a car while she is out of town. One car rental company offers a flat rate of $35 per day plus $0.10 per mile. Another car rental company offers the same car for $25 per day plus $0.25 per mile. She will need the car for 5 days. How many miles would she need to drive for the first rental company to be a better deal?

Answers

r1 = 35*d + .10*m, rental car company 1r2 = 25*d + .25m, rental car company 2
r1 will be a better deal when when r2 > r1r2 > r1 when35*5 + .10*m > 25*5 + .25m5(35-25) > (.25 - .10)m5*10 > (.15)m50/.15 > mm > 50/.15 = 33 1/3
Ans. When 33 1/3 miles have been driven, rental car company r1 will be a better deal.

Answer:

She need to drive more than 2000 miles for the first rental company to be a better deal .

Step-by-step explanation:

Case 1) One car rental company offers a flat rate of $35 per day plus $0.10 per mile

Let m be the no. of miles

She will need the car for 5 days.

So, total cost = [tex]35 \times 5 +0.10m=175+0.10m[/tex]

Case 2)  Another car rental company offers the same car for $25 per day plus $0.25 per mile.

Let m be the no. of miles

She will need the car for 5 days.

So, total cost = [tex]25 \times 5 +0.25m=125 +0.25m[/tex]

Now we are supposed to find How many miles would she need to drive for the first rental company to be a better deal?

So, [tex]175+0.10m <125 +0.25m [/tex]

[tex]175+125 <125 +0.25m-0.10m [/tex]

[tex]300 < 0.15m [/tex]

[tex]\frac{300}{0.15} < m [/tex]

[tex]2000 < m [/tex]

So, she need to drive more than 2000 miles for the first rental company to be a better deal

The graph of an absolute value function contains the points (1, 2), (0, 0), and (–1, 2). Shawn thinks the function this graph represents is f(x) = 2|–x|. Brielle thinks the function this graph represents is f(x) = 2|x|. Determine who is correct and explain why.

Answers

Answer:

The absolute value parent function is symmetric with respect to the y-axis.  

The graphs of f(x) = 2|–x| and f(x) = 2|x| are identical because the absolute value of negative x is a reflection across the y-axis.  

If you substitute the three given points into both functions, they produce true statements.

Step-by-step explanation:

Given that t is the median of the numbers 32, 64, 22, t, 41, 22, and 78, what is the lowest possible value of t?

Answers

the answer is 36.5 because when putting the numbres in order from least to greatest 32 and 41 are the two middle numbers, so you would find the average of those two numbers would be the answer.

Final answer:

The lowest possible value for t as the median of the numbers 32, 64, 22, t, 41, 22, and 78 is 32. This value maintains the order when the numbers are arranged from lowest to highest for t to be the median.

Explanation:

To find the lowest possible value for t given that it is the median of the numbers 32, 64, 22, t, 41, 22, and 78, we first need to arrange the numbers in ascending order.

Since there are seven numbers, the median would be the fourth number when sorted.

To ensure t is the lowest possible median, we sort the remaining numbers excluding t. Thus, we have:

22, 22, 32, 41, 64, 78

The third value is 32, and the fifth value is 41, so for t to be the median, t must be greater than or equal to 32 but less than or equal to 41.

However, since we are looking for the lowest possible value of t, t would be 32, as this is the lowest it can be while still being the median of the sorted list.

Determine which two values the following expression is between.

√37

A. 7 and 8
B. 5 and 6
C. 4 and 5

Answers

Answer: None of the above.
__________________________
Explanation: At this very moment that I submit this answer, the question given consists SOLELY of the following text:
____________________________________
"Determine which two values the following expression is between. 

√37" 
___________________________
Furthermore, At this very moment that I submit this answer, the answer choices given consist solely of the following (there are no updates, comments, etc.):
__________________
"A. 7 and 8 
 B. 5 and 6 
 C. 4 and 5"
________________
Note, the square root of 36; or √36, is 6. The square root of 49, or √49, is 7.
So, √37 is going to be very close to "6", and a LITTLE bit more than "6" but not much more."  It will be a LOT LESS than "7".
________________
So Answer choice [B]: between 5 and 6 is incorrect; it will be a bit over "6".
So Answer choice [C]: between 4 and 5 is incorrect.  Again, it will be over                                                                                                      "6".
Answer choice [A]: between 7 and 8 is incorrect.  It will be much a bit over                                                                         "6"—but much lower than                                                                                         "7".
________________________________________________________
If there were an answer choice, "between 6 and 7", then that would be correct.

Answer:

none there would be an answer if it was 3√7

Step-by-step explanation:

When the polynomial in P(x) is divided by (x + a), the remainder equals P(a).
A. True
B. False

Answers

According to Remainder Theorem for the polynomials, for every polynomial P(x) there exist such polynomials G(x) and R(x), that [tex] P(x)=(x\pm a)G(x)+R(x) [/tex].


When the polynomial in P(x) is divided by (x + a), then there exist such polynomials G(x) and R(x), that P(x)=(x+a)G(x)+R(x). Note that for x=-a:


P(-a)=(-a+a)G(-a)+R(-a)=0·G(a)+R(-a)=R(-a).
This means that P(-a) is the remainder, not P(a).
Answer: correct choice is B.




Answer:

false

Step-by-step explanation:

solve x2+10x+21=0 ...?

Answers

x²+10x+21=0
/\ = 10²-4*1*21
/\ = 100 - 84
/\ = 16
x = (-10+/-\/16)/2
x = (-10+/-4)/2
x' = (-10+4)/2 = -6/2 = -3
x" = (-10-4)/2 = -14/2 = -7
S: {-3; -7}

Twice the difference of two numbers is 14 and their sum is 3

find the numbers.

Answers

They are 5 and minus 2

You have to solve the system of equations
2(a-b)=14
a+b=3
Let, x+y = 3
2(x-y) = 14

Substitute value from eq (1) in eq (2),
2(3-y-y) = 14
2(3-2y) = 14
6-4y = 14
-4y = 8
y = -2

Put it into eq (1),
x-2 = 3
x = 5

So, x = 5 & y = -2

Hope this helps!

what is the quotient when -3^3 +5x+14 is divided by x-2? pleas hurry

Answers

The quotient is -3x² + 3x + 8.

To find the quotient when [tex]\(-3x^3 + 5x + 14\)[/tex] is divided by x - 2, we can use polynomial long division.

The dividend is [tex]\(-3x^3 + 0x^2 + 5x + 14\)[/tex] (since there is no [tex]\(x^2\)[/tex] term) and the divisor is x - 2.

1. Divide the first term of the dividend by the first term of the divisor: [tex]\(-3x^3 \div x = -3x^2\)[/tex].

2. Multiply the divisor by the result of step 1: [tex]\((-3x^2)(x - 2) = -3x^3 + 6x^2\).[/tex]

3. Subtract the result of step 2 from the dividend: [tex]\((-3x^3 + 0x^2 + 5x + 14) - (-3x^3 + 6x^2) = -6x^2 + 5x + 14\).[/tex]

4. Repeat the process with the new dividend [tex]\(-6x^2 + 5x + 14\)[/tex].

Continuing the division process, we find the quotient:

[tex]\[ \frac{-3x^3 + 5x + 14}{x - 2} = -3x^2 + 3x + 8 \][/tex]

So, the quotient is -3x² + 3x + 8.

what is 1/4 divided by 5?

Answers

1/4 divided by 5 is 0.05 or 1/20

1/4 divided by 5 results into '0.05'

Given that we need to find 1/4 divided by 5

Thus let the required answer be denoted as "A"

Thus using basic definitions of divisions and fractions we can find out the resultant value

[tex]A=\frac{\frac{1}{4} }{5} \\A=\frac{1}{4*5} \\A=\frac{1}{20}[/tex]

Thus '1/20' is  the required answer

Now the resultant value can also be simplified to get a decimal value

[tex]A=\frac{1}{20} \\A=\frac{1}{2*10} \\A=\frac{1}{2} *\frac{1}{10} \\A=0.5*0.1\\A=0.05[/tex]

Thus '0.05' is the final answer

h(x)=(g o f)(x)=1/(x+3)^2 which of the fallowing could be a possible decomposition of h(x)? A. f(x)=1/x^2;g(x)=x+3 B. f(x)=x+3; g(x)=1/x^2 C.f(x)=x^2; g(x)=x+3 D. f(x)=1/x;g(x)=x+3

...?

Answers

f(x)=x+3; g(x)=1/x^2

If you take B f(x)=x+3 g(x)=1/x^2 plug the f(x) into the g(x) formula (in other words, f(x) becomes the x for g) g(x)=1/x^2 g(x)=1/(x+3)^2
I am pretty sure that the only possibl decomposition of the finction represented above is being revealed by the second option -  B. f(x)=x+3; g(x)=1/x^2. I choose this one because I plugged the f(x) into the g(x) and that's what I got :[tex]g(x)=1/x^2 g(x)=1/(x+3)^2[/tex]

Use the distributive property to simplify the expression 6(s-9

Answers

Answer:

6s-54

Step by step: Put the 6 in front of the s and then multiply 6*9. so the answer is 6s-54

Final answer:

The distributive property is used in mathematics to multiply a number by multiple numbers within parentheses. Using it for expression 6(s - 9) gives us 6s - 54.

Explanation:

The expression you need to simplify using the distributive property is 6(s - 9). The distributive property is a fundamental property in mathematics that allows you to multiply a singular number by multiple numbers within parentheses.

In case of the expression 6(s - 9), you'll simply need to distribute or multiply the number 6 to each term inside the parentheses.

6 x s and 6 x -9. Performing these will give us 6s - 54.


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What decimal is equivalent to 5/6?

Answers

 in decimals is 0.83333333333333333333333333

1) what is the volume of a cylinder with a radius of 2 cm and a height of 10 cm? ( Express your answer using symbol pie)

A) 4(symbol pie) cm^3
B) 10(symbol pie) cm ^3
C) 20(symbol pie) cm ^3
D) 40(symbol pie) cm ^3

2) a cylinder has a base with a radius of 3 cm and a height of 12 cm. what is the volume of the cylinder? ( use symbol pie=3.14)

A) 113.04 cm^3
B) 339.12 cm^3
C) 452.16 cm^3
D) 1356.48 cm^3

3) A cylinder has a base with a radius of 3 cm and a height of 12 cm. what is the volume of the cylinder? ( use symbol pie=3.14)

A) 113.04 cm^3
B) 339.12 cm^3
C) 452.16 cm^3
D) 1356.48 cm^3

4) A cylinder and a rectangular prism have the same volume and same height. The base of the prism is a square with length 7 cm.

what is the approximate radius of the cylinder?

A) 4.0 cm
B) 3.5 cm
C) 2.2 cm
D) 1.5 cm

Answers

I hope this helps you

Answer:

1 a 2 d 3b 4 c

Step-by-step explanation:

sorry it took me 6 years to get back to you

Lucas is applying to both Stanford and Cal-poly. The probability that he gets accepted to Stanford is 0.4. The probability that he gets accepted to Cal-Poly is 0.3. The probability that he is accepted to both schools is 0.15.

a) What is the probability that he is accepted to one of the two schools?
b) What is the probability that he does not get accepted at either school?

Answers

Final answer:

The probability that Lucas is accepted to at least one of the two schools is 55%, while the probability that he does not get into either school is 45%.

Explanation:

The subject of the question is probability theory, which is a branch of mathematics. Lucas has a 0.4 chance of getting into Stanford, a 0.3 chance of getting into Cal-Poly, and a 0.15 chance of getting into both. These are independent probabilities because they do not affect each other.

a) To calculate the probability that he gets accepted to at least one of the schools, we add the probabilities of him getting into each school, and then subtract the probability of him getting into both (because we're double counting that scenario). So, that's 0.3 (for Cal-Poly) + 0.4 (for Stanford) - 0.15 (for both) = 0.55, or 55%.

b) In probability theory, the total probability of all possibilities is always 1. So, to find the probability that he doesn't get into EITHER school, we subtract the probability that he gets into at least one school from 1. So, 1 - 0.55 (the answer from part a) = 0.45, or 45%. So, there's a 45% chance that Lucas doesn't get accepted into either school.

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Solve using quadratic formula. X^2+9x-13=0

Answers

I hope this helps you

3/5 of the village speaks one of the 8 major languages. What fraction of the world speaks a language other than one of the 8 major languages?

Answers

2/5 is the answer to the question

0.00000768 is the correct answer, depending how you do it.

The sum of two numbers is 56, and their difference is 10. What are the numbers?

Answers

There are two equations hidden in the language here:

a + b = 56 and a - b = 10.

if you do (a+b) + (a-b) then you get:

(a+b) + (a-b) = 66 = a + b + a - b

The b's cancel, so you get 2a = 66, which means a = 33. You can use this to solve for b in one of the above equations by plugging in a = 33 and figuring out what b has to be. Then you will have your two numbers.
x + y = 56
x - y = 10 so x = y + 10
y + 10 + y = 56
2y +10 = 56
2y = 56 -10
2y = 46
y = 46/2
y = 23

x = y + 10 = 23 + 10 =33

Answer: The numbers are 23 and 33

Proof:

sum: 23 + 33 = 56
difference: 33 -23 = 10

holly can make 3 necklaces with 6 diamonds. if holly has 30 diamonds, how many necklaces can she make?

Answers

Holly can make 60 necklaces.

Edit: I read the problem wrong, check the other comment.
She can make 15 necklaces.

If Holly has 30 diamonds and she needs 6 to make 3 necklaces, you do 30 ÷ 6 = 5. You then take 5 × 3 to give you the amount of necklaces she can make, which is 15.

according to poll for an upcoming school board election is 40% of voters are likely to vote for the incumbent. The polls show a margin of error of +-3 percent points.

Answers

But...what's the question?
Best answer is I'm not sure

The original price is 50. the discount is 15%. what is the new price

Answers

15% off
15% off of 50
notice that 50 is 1/2 of hundred
15% of 100 is 15
therefor
15% of 50 is 15/2=7.5

that is discount
50-7.5=42.5

new price=$42.5

Summer clothes are on sale starting September 1st. A swimsuit is on sale for 40% off the regular selling price of $55.00. What is the markdown to the nearest cent?

Answers

55 / 100 = 0.55 which is 1%

0.55 x 40 = 22 which is 40%

55 - 22 = 33

The answer is $33

(2x - 3y)(4x - y) ...?

Answers

The answer is 8x² - 14xy + 3y²

We will use Foil method to multiply binomials:
(2x - 3y)(4x - y) = 2x * 4x - 2x * y - 3y * 4x + 3y * y =
                         = 8x² - 2xy - 12xy + 3y²
                         = 8x² - 14xy + 3y²

What is the value of the function y=2x−3 when x=−1 ?

Answers

Hello :)

When x=-1
y=2×(-1)-3=-2-3= -5



Find the area of a square whose side is (3x + 2).
...?

Answers

Area = width x height
A square has sides of equal length

Therefore
Area= (3x + 2) x (3x + 2)
= (3x + 2)²

The table shows the heights in inches of trees after they have been planted. Determine the equation which relates x and y.

Height In Pot, x | Height Without Pot, y
30 | 18
36 | 24
42 | 30
48 | 36


A. y = x - 6
B. y = x - 10
C. y = x - 12
D. y = x + 6

Answers

The answer is C. y = x - 12

Let's check all choices.
A. y = x - 6
    18 = 30 - 6
    18 = 24
INCORRECT

B. y = x - 10
    18 = 30 - 10
    18 = 20
INCORRECT

C. y = x - 12
    18 = 30 - 12
    18 = 18
CORRECT
    24 = 36 - 12
    24 = 24
CORRECT
...

D. y = x + 6
    18 = 30 + 6
    18 = 36
INCORRECT
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