Simplify arccos(sin50°).

Answer: x = 2

[tex]8x=16[/tex]   Original Equation

[tex]\frac{8x}{8}=\frac{16}{8}[/tex]    Divide both sides by 8

[tex]x=2[/tex]    Simplify

Answer:

The expression : 12x + 2.50y

Total cost = $103.5

Step-by-step explanation:

The number of people that went to the movie = x

Number of people that bought drinks = y

Total cost = 12x + 2.50y

Eight people went to a movie and three of them purchased a drink

Total cost = 12 × 8 + 2.50 × 3

Total cost = 96 + 7.5

Total cost = $103.5

Answer:

The answer is $1512.

Step-by-step explanation:

First, multiply 12 by 18, you get 216. Then multiply that by 7, you get 1512. Bryon will need $1512 to cover his photo frame.

Answer:

$7

multiply .07 times 100

Step-by-step explanation:

i suppose you are looking for the expanded and simplified form

We can use Pascal's triangle to perform this

According to Pascal's triangle,

1

1 1

1 2 1

So, 1•3x²+2•3x•1/x+1•1/x²

3x²+6x/x+1/x²

3x²+6+1/x²

Answer:

144 minutes or 2 hours and 24 minutes

Step-by-step explanation:

12 miles divided by 2 miles = 6

24 * 6 - 144

So the final answer is 144.

Answer: 144 minutes

Step-by-step explanation:

If she can run 2 miles in 24 minutes and she needs to run 12 miles you need to multiple 24 and 6 ( You get a six because 24 minutes is for TWO miles. So you need to split the 12 in half.)

Answer:

12+12+14+15+16+18+20+23=130

130÷8=16.25

aanswer=16

you move 89 as its anomalous

too higher than the other numbers

Answer:

Therefore, required equation is N = 100 x [tex]2^{- \frac{t}{5730 }[/tex]

Step-by-step explanation:

According to the question it is given that

Amount of carbon atom when animal was alive is [tex]N_0[/tex] =  100g

Half life of C-14 is 5730 years

Let 'N' be the amount of carbon atom present after 't' time

since the differential equation of decay process of radioactive atom is

[tex]\frac{dN}{dt} = \lambda N[/tex] where, λ is the decay constant

on solving this we get

[tex]N = N_0 e^{-\lambda t}[/tex]

on further solving and substituting [tex]\lambda = \frac{ln2}{T_{1/2}}[/tex] we get

[tex]N = N_0 2^{- \frac{t}{T_{1/2}} }[/tex]

on substituting the value of  [tex]N_0[/tex] =  100g and [tex]T_{1/2}[/tex] = 5730 we get

N = 100 x [tex]2^{- \frac{t}{5730 }[/tex]

Answer:

see explanation

Step-by-step explanation:

Using the chain rule along with standard derivatives

Given

y = f(g(x)) , then

[tex]\frac{dy}{dx}[/tex] = f'(g(x)) × g'(x)

[tex]\frac{d}{dx}[/tex] (sinx) = cosx , [tex]\frac{d}{dx}[/tex] (cosx) = - sinx

(a)

y = sin x²

[tex]\frac{dy}{dx}[/tex] = cos x² × [tex]\frac{d}{dx}[/tex] (x² )

   = cos x² × 2x

   = 2xcosx²

(b)

y = cos4x³

[tex]\frac{dy}{dx}[/tex] = - sin4x³ × [tex]\frac{d}{dx}[/tex] (4x³ )

   = - sin4x³ × 12x²

   = - 12x²sin4x³

Answer:

pnQnR= {}

Step-by-step explanation:

there is no number common in set P, set Q and set R.

So the answer is null

{}

Answer:

{} there is no number common to the three sets so it is an empty set

Step-by-step explanation:

Answer:

1 1/4

Step-by-step explanation:

For 12 dozen cookies, 5/6 cups of better are needed.

We have a oatmeal cookie recipe that calls for 1/2 cup of butter to make 5 dozen cookies. Wyatt needs to make 12 dozen cookies for the bake sale.

1/2 cup butter is needed for 5 dozen cookies.

For 1 dozen cookies, (1/2)/5 = (1/10) cups of better are needed.

For 12 dozen cookies, 10/12 cups or 5/6 cups of better are needed.

Therefore, for 12 dozen cookies, 5/6 cups of better are needed.

To solve more questions on graphs, visit the link below -

https://brainly.com/question/28972673

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Answer:

i think 9

Step-by-step explanation:

Answer:

No

Step-by-step explanation:

If it is a right triangle, then the Pythagorean theorem must work.

a^2 + b^2 = c^2 (a and b are the shorter sides and c is the longest)

16^2 + 20^2 = 25^2

256 + 400 = 625

656 = 625

This is not true

Hope this helps!

Answer:

The inverse of given function is

[tex]f^{-1} ( x ) = (2x+7)^{\frac{1}{3} }[/tex]

Step-by-step explanation:

Explanation:-

Given function

                     [tex]f(x) = \frac{x^{3}-7 }{2}[/tex]

let      y = f(x)

     [tex]y = f(x) = \frac{x^{3}-7 }{2}[/tex]

   ⇒ 2 y = x³ - 7

⇒      2y +7 = x³

⇒   [tex]x = ( 2 y +7 )^{\frac{1}{3} }[/tex]

⇒[tex]f^{-1} ( y ) = (2y+7)^{\frac{1}{3} }[/tex]

The inverse of given function is

[tex]f^{-1} ( x ) = (2x+7)^{\frac{1}{3} }[/tex]

Answer:

5n - 27

n

5 because you minus 5 each time

27 because 32-5=27

(5×50) -27=

223

Step-by-step explanation:

5×10³) × (9×10^7)

= 45 × 10^10

= 4.5 × 10¹¹

Answer:

(5*10^3)*(9*10^7)=4.5*10^11

Step-by-step explanation:

5*10^3=5*1000=5000

9*10^7=9*10000000=90000000

5000*90000000=5*1000*9*10000000=5*9*10000000000=45*10000000000=450000000000, or 45 with 10 0's, or 10^10

45*10^10 is not simplified, as we need a number less then 10, so we divide 10 from 45, and add 1 to the exponent, getting 4.5*10^11

Answer:

A) 4 hours

B) 7:25 PM on the same Monday.

C) 12:10 PM on Tuesday.

Step-by-step explanation:

Given that:

Number of pages in the first book = 400

A) Time taken to read each page = 36 seconds

To find the number of hours taken to finish reading the book, we need to first find the number of seconds taken to finish reading the book.

Time taken by Aisha to finish reading 400 pages = 400 [tex]\times[/tex] 36 = 14400 seconds

3600 seconds = 1 hour

14400 seconds = [tex]\frac{1}{3600}\times 14400[/tex] hours = 4 hours

B) Reading timings of Aisha :

1st time = 10:15 AM to 2:10 PM i.e. a duration of 3 hours and 55 minutes

2nd time = 7:20 PM to 09:00 PM i.e. a duration of 1 hour and 40 minutes

4 hours are taken to read this book.

So, it will require 5 more minutes after the 1st reading time.

Therefore, Aisha will finish reading at 07:25 PM on same Monday.

C) Second book has 350 pages.

Time taken to read 350 pages = [tex]\frac{350\times 36}{3600}[/tex] = 3.5 hours

She starts reading at 07:25 PM on Monday.

Up to, 9 PM, a duration of 1 hour and 35 minutes will be utilized for reading the second book.

A total of 1 hour and 55 minutes more will be required.

Therefore, the second book reading will be finished at 12:10 PM on Tuesday.

Answer:

Undefined

Step-by-step explanation:

0=0

Answer:

0

Step-by-step explanation:

Combine the like terms 9x-2x = 7x

Subtract the numbers 11-5 = 6

Combine the like terms again 4x+3x = 7x

Subtract 6 from both sides of the equation 6-6 = 0 6-6 = 0

Simplify 7x = 7x

Result 0

Answer:

Step-by-step explanation:

2/5min=24 sec

5 min=300 sec

total=324 seconds

the water decreased 100-19=81 degrees

81/324=0.25 degrees/second

the change in temperature was 0.25 degrees per second

we will multiply by 60

15 degrees per minute

Answer:

3,000 divided 60 are the compatible numbers, and the estimate is 50.

Step-by-step explanation:

Compatible numbers can be described as numbers which are close in value to the actual numbers and can easily be added, subtracted, multiplied, or divided mentally.

From the question, 3,000 divided 60 are the compatible numbers that provide a better estimate for the number of departments that can get the bottles because 55 can be rounded up to 60.

The estimate will therefore be as follows:

Estimate = 3,000 / 60 = 50

Answer:

A and B

Step-by-step explanation:

A triangle is a triangle if the sidelengths, a, b, c, in increasing order, satisfy the condition that a+b > c

only A and B satisfy that condition

Answer:

y = x + 3

Step-by-step explanation:

y = mx + b

m is the slope

b is the y intercept

if m = 1 and b = 3 then

y = x + 3

Answer:

4x - 16

Step-by-step explanation:

X can be any value (I made it 20)

5.5(2)+ 1 - (1.5(2) +17)

11 + 1 - 20

12 -20

-8

4(2) - 16

8 - 16

-8

You better say thanks (from a grade 9 academic student)

Answer:

4x-16

Step-by-step explanation:

5.5x + 1-(1,5x+17)?

When there's a - in front of an expression in parenthesis, cvhangethe sign of each term in the expression.

5.5+1-1.5x-17

Like terms

4x + 1-17

Then boom 4x-16

Answer: The second answer.

Step-by-step explanation:

Answer:

a) -10

b) 7

Step-by-step explanation:

a) [tex]2(x + 3) = x - 4[/tex]

[tex] = > 2x + 6 = x - 4[/tex]

[tex] = > 2x - x = - 4 - 6[/tex]

[tex] = > x = - 10[/tex]

b) [tex]4(5x - 2) = 2(9x + 3)[/tex]

[tex] = > 20x -8 = 18x + 6[/tex]

[tex] = > 20x - 18x = 8 + 6[/tex]

[tex] = > 2x = 14[/tex]

[tex] = > x = \frac{14}{2} = 7[/tex]

Answer:

a)-10 b)7

Step-by-step explanation:

a)2 ( x + 3 ) = x - 4

2x+6=x-4

2x+6-x=-4

x+6=-4

x=-4-6

x=-10

b)4 ( 5 x - 2 ) = 2 ( 9 x + 3 )

20x-8=2(9x+3)

20x-8=18x+6

20x-8-18x=6

2x-8=6

2x=6+8

2x=14

x=14/2

x=7

Answer:

347/40

Step-by-step explanation:

34.7/4 = 34 7/10 / 4

= 347/10 / 4

= 347/40

Answer:

The answer is C.

Step-by-step explanation:

The simplest form is C.

Answer:

c)2 x 2 x 5 x 5 x 5

[tex]500 \\ \frac{500}{5} = 100 \\ \frac{100}{5} = 20 \\ \frac{20}{2} = 10 \\ \frac{10}{2} = 5 \\ \frac{5}{5} = 1\\ [/tex]

Rewrite the denominators

2 x 2 x 5 x 5 x 5

Answer:

29.25

Step-by-step explanation:

15x1.95= 29.25

Hope this helps :)

if 1 article = 1.95

then if u want to find how much 15 articles = to

you just have to multiply 1.95 * 15 which is equal to 29.25

hope this helps

:)