Mathematics Middle School

Evaluate cos(tan^-1 0)

Answers

Answer 1

Answer:

[tex]cos(tan^{-1}(0))=1[/tex]

Step-by-step explanation:

Evaluate cos(tan^-1 0)

[tex]cos(tan^{-1}(0))[/tex]

We know that tan(0)=0

tan (0 degree)=0

[tex]tan^{-1}(0)=0[/tex]

Replace it in our problem

[tex]cos(tan^{-1}(0))[/tex]

[tex]cos(0)[/tex]

At 0 degree the cos value is 1

So co(0)=1

[tex]cos(tan^{-1}(0))=1[/tex]

Answer 2

Answer:

the correct answer is 1

Related Questions

What is the LCD of 1/6 and 5/12 and 11/18

Answers

Finding the Lowest Common Denominator of: [tex] \frac{1}{6} ; \frac{5}{12} ; \frac{11}{18} [/tex]

Here's to find out how it was our LCD: [tex] \frac{1}{6} = \frac{6}{36} [/tex]
[tex] \frac{5}{12} = \frac{15}{36} [/tex]
[tex] \frac{11}{16} = \frac{22}{36} [/tex]
To find the fraction on the right side we had to multiply (and somewhat divide to get the answer)

So, therefore the Lowest Common Denominator of this question would most likely be: [tex]36[/tex]

Good Luck!

What is number ll I'm in advanced math and this is the only one I don't know. I'm in the 7th grade and in 9th grade math please help me.

Answers

To solve this, we simply need to substitute in the value for x, and then solve like a normal fraction problem. The easiest way to solve for this is to turn both fractions into improper fractions, subtract the smaller value from the larger value, then make it negative.

2 4/5 - 1 1/5
14/5 - 6/5
8/5
-8/5

Now, we should turn it back into a mixed number.

-1 3/5

The value of this expression is -1 3/5 or -8/5.

What is 5xy cubed? To better rephrase it, what is 5xy to the power of 3?

Answers

(5xy)^3
5^3=125
x^3=x^3
y^3=y^3
Put it all together.
Final Answer: 125x^3y^3

(5xy)³
= (5)³(x)³(y)³
= 125x³y³

Solve the system by the elimination method
6x+2y=-16
-x-3y=-16

Answers

eliminate y's
multiply first equation by 3 and 2nd by 2 and addd them

18x+6y=-48
-2x-6y=-32 +
16x+0y=-80

16x=-80
divide both sides by 16
x=-5
sub back

-x-3y=-16
-(-5)-3y=-16
5-3y=-16
-3y=-21
y=7

(x,y)
(-5,7)

If x = -6 and y = -9, find xy - 3x + 2y

Answers

54, tho this might be right or wrong.

It's 54 . You put the numbers in for the letters and simplify from there!

What is rhe name of the period that has the digits 751

Answers

The name of period that has 751 in the number is hundreds.
Because Period is considered to a group of places of the digits.

In this case, the given number is 751 and it is the group of hundred because 700 is the highest number it contains.

We can also write 751 as

751 = 700 + 50 + 1

It means,

7 hundreds + 5 tens + 1 ones

George has 9 more dollars than Frank, who has 3 more than Richard. What is the least amount of money that must be exchanged so that they each have the same amount of money?

I know the answer is $7 but is there a quicker way to do it instead of guess and check?

Answers

r+r+3+r+12

3r+15, let r=1

3+15=18, so we need each person to have 6

we know that g=12+1=13, f=3+1=4, r=1

So g must give away 7. f must take 2, and r must get 5

So 7+2+5=14 got exchanged in total.

But I can see that only $7 dollars was taken to be distributed to the other two as well.

What are the like terms of 8c - 12 - 5c +4

Answers

The like terms here are the two constants, 4 and -12

The other like terms are the multiples of the variable c, 8c and -5c

Leon lives in North Dakota, which has a sales tax of 5%. He just bought a home theater system whose full price was $450, but after sending in a rebate form, he later received a check in the mail for $75. What was the total amount that Leon ended up paying after receiving the rebate? A. $397.50 B. $472.50 C. $393.75 D. $375.00

Answers

Answer:

$397.50

Step-by-step explanation:

$450×5%=22.5 (Tax)

$450+22.5=$472 (Full Price of Item)

$472-$75=$397.5 (With Rebate)

final answer=$397.5

The maximum height of a vehicle that can safely pass under a bridge is 12 feet 5 inches. A truck measures 162 inches in height. Which best explaims whether or not the truck can pass safely under the bridge?

Answers

1 foot = 12 inches. If you multiply 12 by 12 and then add 5, you get 149. 149 is less than 162 so it will be able to fit!

find the quotient -7 divided by 14/3

Answers

-1/6 is your answer i know so Hope this helps

if Mary pitches a baseball with the initial height of 6 feet and a velocity of 73 feet per sec, how long will it take for the ball to hit the ground

PLZ somebody tell me ;c

Answers

4.64 seconds i believe

What value correctly fills in the blank so that the expressions are equivalent?
18 + 45 = ___ ´ (2 + 5)
-----------------------
2

3

7

9

Answers

63 = x(7)
9 = x

The answer is D) 9

Answer:

the answer is 9

Step-by-step explanation:

i just did it

Alaska's glacier bay national park had 431,986 visitors one year the next year the park had22,351 more visitors than the year before how many people visited during the two years show your work and explain how you found your answer.

Answers

886,323 people visited during the two years.

Suppose you find six articles related to the topic of your research paper. In how many ways can you choose four articles to read? 30 15 720 360

Answers

This is a case of choosing objects from a set, where order matters.

The number of ways you can choose some objects from a set when order matters is called variations.

The formula of variations is:

Vm,n = m! / (m - n)!

In this case it is the selection of four articles from a set of six articles =>

V6,4 = 6! / (6-4)! = 6*5*4! / 4! = 6*5 = 30

Answer: 30

Matteo is adjusting a satellite because he finds it is not focusing the incoming radio waves perfectly. The shape of his satellite can be modeled by y^2=6x where x and y are modeled in inches. He realizes that the static is a result of the feed antenna shifting slightly off the focus point. What is the focus point of the satellite? (–1.5, 0) (0, –1.5) (0, 1.5) (1.5, 0)

Answers

Answer: (1.5, 0)

Step-by-step explanation:

Given : The shape of his satellite can be modeled by [tex]y^2=6x[/tex] where x and y are modeled in inches.

Now,the given equation [tex]y^2=6x[/tex] is a equation of parabola.

Here, coefficient of x is positive, hence the parabola opens rightwards.

On comparing this equation with standard equation [tex]x^2=4mx[/tex], we get

[tex]4m=6\\\Rightarrow\ m=\frac{6}{4}=1.5[/tex]

In standard equation, coordinates of focus=(m,0)

Thus for given equation coordinates of focus=(1.5,0)

Answer:

Answer: (1.5, 0)

Step-by-step explanation:

One hundred students are asked a survey question as they walk through the front gate at their middle school. Is this a representative sample of the schools population?

Answers

Given that one hundred students are asked a survey question as they walk through the front gate at their middle school.

This a representative sample of the schools population because the sampling is random and is not biased.

.736 rounded to the nearest hundredth

Answers

.74 is the answer rounded to nearest hundredth.

What is the length of leg y of the right triangle? A right triangle with hypotenuse 85 and legs 84 and y 1 9 13 26 Question 11(Multiple Choice Worth 1 points)

Answers

a^2 +b^2 = c^2

a^2 +84^2 = 85^2

a^2 + 7056 =7225

a^2 = 169

a= sqrt(169)

a=13

length of leg y = 13

The answer would be 13

The Shake Shack sells large and small shakes. A large shake costs $5, and a small shake costs $3. On Sunday, the Shake Shack had a total revenue of $479. Which equation can be used to represent x, the number of small shakes sold and y, the number of large shakes sold?
479x + 479y = 15
4x + 4y = 479
5x + 3y = 479
3x + 5y = 479

Answers

Since X represents small shakes and y large ones The 3 must be with x and the 5 with y. The last equation is the only one that fits this criteria.

Answer: 3x + 5y = 479

Answer:

3x + 5y = 479

Step-by-step explanation:

As the problem states it, the number of small shakes will be represented by "x" and the number of large shakes will be represented by "y", so we know that the number of each mutiplied by the cost, its equal to the total revenue which is $479, so we just put that into an equation:

3x + 5y=$479

And that´s the equation that can be used to represent that inequality.

What is the equation of this line of best fit in slope-intercept form?
y = −6x + 3/4
y = 6x + 3/4
y =-3/4 x + 6
y =3/4 x + 6

PLEASE HELP!!! Get brainliest answer if right @peredhel

Answers

Hi!

(before I answer, I wanted to say that tagging me doesn't normally get my attention, and you won't always get the people you want to answer your question to answer it, whether you tag someone or not, because it doesn't notify anyone. Hope that makes sense.) :)

So first let's look at the graph.

The y intercept is 6.
That rules out A and B.

The line is going down, which means the coefficient to x will be negative.

That rules out C.

Now to make sure D is correct, find the slope of the line.
The slope of the line is 3/4, which means D is correct.

The answer is y = 3/4x + 6

Hope this helps! :)

Since the line is going down, the gradient must be negative
After that,
Let A be a point on the line with coordinates (0,6) while let B be another point on the line with coordinates (8,0)
Let's recall the gradient formula
y1-y2/x1-x2
So, the gradient of AB will be 6-0/0-8= -3/4
Let's also recall that the formula of a linear line is y=mx+c, m is the gradient while x is the y-intercept.
So in this case, the gradient is -3/4 while the y-intercept is 6.
As such, the answer must be the third one, y=-3/4x + 6

I know the answer but my meme dealer needs points

Answers

I ain't the meme dealer but whatev

GCF can be found by grouping the 2 numbers and finding the common group of factors

so factor them
36=2*2*3*3
84=2*2*3*7

the common factors are 2*2*3=12

the GCF is 12

Answer: 12 (C)

Step-by-step explanation: Im a "Meme Dealer" but not yours.

how do you solve the function 5x-4=-2(3x+2)

Answers

5x-4=-2(3x+2)
5x-4= -6x-4
5x+6x= -4+4
11x=0
X=0/11

5x - 4 = -2 (3x + 2)
Expand the bracket
5x - 4 = -6x - 4
11x = 0
x = 0/11 = 0

Hope it helped!

Easy question about triangles that I forgot what they look like so I feel too lazy to look them up (13 POINTS)

Answers

There are exactly 3 scalene triangles, and I feel you XD

They are right, there are exactly 3 scalene triangles

Which rate is equivalent to the unit rate of 15 miles per gallon?

thirty miles over three gallons
three gallons over thirty miles
four gallons over sixty miles
sixty miles over four gallons

Answers

Sixty miles over four gallons would reduce down to 15 miles over one gallon which would 15 miles per gallon.

Answer:

Fourth option is correct.

Step-by-step explanation:

Since we have given that

thirty miles over three gallons

Unit rate would be miles per gallon.

three gallons over thirty miles

Unit rate would be miles per gallon.

four gallons over sixty miles

Unit rate would be miles per gallon.

sixty miles over four gallons

Unit rate would be miles per gallon.

Hence, Fourth option is correct.

Help me please!! Thanks you

Answers

height = sqrt (26^2 - 10^)

10^2 = 100

26^2 = 676

sqrt ( 676-100)=

sqrt(576) = 24

height is 24 ft

Explain how you know the valúes of the digits in the number 58

Answers

The 5 is in the tens spot and the 8 is in the ones.
Look at chart. Plug in an 8 where it says ones, and the 5 where it says tens. Yeah?

Each level of a smartphone app adds more gems for you to match. On level one, there were 13 gems. On level twelve, there were 123 gems. When you complete all twelve levels, how many total gems will you have matched?

Answers

First find the rate or common difference if it exists.

(123-13)/(12-1)

110/11

10 So this essentially form an arithmetic sequence because each term is a constant difference with respect to the previous term.

The sum of an arithmetic sequence, in simplest terms, is the average of the first and last terms times the number of terms, in this case:

(12-1+1)(13+123)/2

12(68)

816

So the player will have matched 816 gems in total for the twelves rounds.

Answer:

816 is your answer

Step-by-step explanation:

A line passes through (1, –5) and (–3, 7).
a. Write an equation for the line in point-slope form.
b. Rewrite the equation in slope-intercept form.

Answers

A. First, find the slope, which is -0.5, and then insert it into point-slope form, which is y-y1=m(x-x1), or y-1=-0.5(x+5). That's point-slope form.

B. First, distribute -0.5 to both terms in the parenthesis, to get y-1=-0.5x-2.5, and lastly add 1 to both sides to get the slope-intercept form of y=-0.5x-1.5

Answer:

you didnt give the answer its A

Step-by-step explanation:

cause u gay

What is the answer to 8ab-2b+ab-b

Answers

8ab-2b+ab-b
8ab+ ab= 9ab
-2b-b= -3b

Answer: 9ab - 3b

8ab-2b+ab-b
Combine like factors
9ab-3b

Other Questions

Turnabouts and railroad crossings are examples of Which term most closely matches the description: an expression of the risk associated with a hazard that combines its severity and probability into a single arabic numeral which can be used to help determine hazard abatement priorities? Which group correctly lists the calendars in the box below from oldest to newest? Gregorian calendar Julian calendar Roman calendar Egyptian calendar Find the center and radius of a circle defined by the equation x^2+yy^2+4x-8y+13=0 With a ____ indent, all lines except the first line of the paragraph are indented from the left margin. Why is sin(20) = sin(160) = -sin(200) = -sin(340)? Besides advertising fashion, what does commercial photography do? what was the result of the civil wars between leaders of the wealthy and lower classes in rome during the 2nd adn 1st centuries B.C (200-1 B.C) _____ of an adult's healthy body weight is fluid. ten to thirty percent thirty to fifty percent fifty to seventy percent seventy to ninety percent High-altitude clouds composed of ice crystals are called ____ clouds. Help!! Image attached, will put most brainliest Given: F = {(0, 1), (2, 4), (4, 6), (6, 8)} and G = {(2, 5), (4, 7), (5, 8), (6, 9), (7, 5)}(F + G) (2) =Given:F = {(0, 1), (2, 4), (4, 6), (6, 8)}andG = {(2, 5), (4, 7), (5, 8), (6, 9), (7, 5)}(F - G) (6) =Given:F = {(0, 1), (2, 4), (4, 6), (6, 8)}andG = {(2, 5), (4, 7), (5, 8), (6, 9), (7, 5)}(FG) (2) = How does the central dogma of molecular genetics serve as the basis of modern genetics? PLEASE HELP!!!!!! The line of symmetry for the quadratic equation y = ax 2 - 8x - 3 is x = 2. What is the value of "a"?A) -2B) -1C) 2 In "The Death of Ivan Ilyich," How might Ivan Ilyichs sense of duty be impacting his health? The transit service may refuse transport of an individual with a disability if that person does not have a personal care attendant. True or false What context clue best helps clarify the meaning of the word "odious" in this sentence from "The Black Cat," by Edgar Allan Poe? I did not, for some weeks, strike, or otherwise violently ill use it; but gradually very gradually I came to look upon it with unutterable loathing, and to flee silently from its odious presence, as from the breath of a pestilence.A. very graduallyb. to flee silentlyc. unutterable loathingd. look upon it a pizza delivery shop averages 21 minutes per delivery with a standard deviation of 3 minutes. what is the probability that a pizza takes less than 15 minutes to be delivered? The primary challenge in driving a manual transmission vehicle is learning to: what is the exchange that Fogg has with the train station landlord? Steam Workshop Downloader