if x and y varies directly and x = 4 when y = 16. find y when x = 9?

Answer:

what si the extra credit

Answer:

c is the answer have a nice day

Step-by-step explanation:

Answer:

3.5 inches

Step-by-step explanation:

Answer:

-p^3

Step-by-step explanation:

( p - 2 p ) ^ 3

combine p and 2p to get -p

》expand (-p)^3

》(-1)^3p^3

calculate -1 to the power of 3 and get -1

and this equals -p^3

Answer:

option c

Step-by-step explanation:

Answer:

its A

Step-by-step explanation:

because in the end QP go together so it either A or B and it A because thats how the triabgle goes

Answer:

The answer is 7.36.

Step-by-step explanation:

23% of 32 = 7.36.

Answer:

271000

Step-by-step explanation:

Answer: 300,000

Step-by-step explanation:

Answer:

A. 15.8

Step-by-step explanation:

First the perimeter of a rectangle = 2 (L +W)

So; 46.4 = 2(L + 7.4)

46.4 = 2L + 14.8

2L = 46.4 - 14.8

2L = 31.6

L =15.8

Answer:

To find out the coordinates of a point in the coordinate system you do the opposite. Begin at the point and follow a vertical line either up or down to the x-axis. There is your x-coordinate. And then do the same but following a horizontal line to find the y-coordinate.

Step-by-step explanation:

Answer:

15.9%

Step-by-step explanation:

Percent decrease formula =

(Initial value - New value/Initial value) × 100

Initial value = 9200kg

New value = 7739.4kg

Percent decrease = (9200 - 7739.4/9200) × 100

Percent decrease = (1460.6/9200) × 100

Percent decrease = 15.8760869565%

Approximately = 15.9%

The percent of decrease in the amount of strawberries used annually is 15.9%

Answer:

$12.50 -  $8:00 = ? , ? = $4.50

Step-by-step explanation:

$12.50 earned from babysitting

Spends some on a new book

$8.00 left

12.50 - 8.00

0-0= 0 , 5- 0 = 5 , 12-8 = 4,

Reverse ur answer and add a dot (.) between 4 and 50

Answer: $4.50, $12.50 -  $8:00 = ? , ? = $4.50

Answer:

1. 75% of 10 liters of milk = 0.75 * 10 liters of milk = 7.5 liters of milk  

2. To find 75% of a number, multiply the number by 0.75.

Answer by mathstudent55 give credit to him/her

Answer 7.5

Step-by-step explanation:

You can find this by dividing the number by 10, for example let’s use the number 20.

you would divide 20 by 10 which is 2 and times it by 7.

This is 14.

By finding this you have found 70% of 20.

now to find 5%, i would divide 20 by 10 once again which is 2 and then i would divide it by 2 which is 1.

then you would add the 2 numbers so 14+1 to get 15 therefore 75%of 20=15

Answer:

-8,-7,-5,-3,-2

-80,-40,20,60

Step-by-step explanation:

Answer:

a = 11

b = 11

c = 11√2

It is an equilateral triangle, because to angles are equal (45°).

[tex] |a| = |b| = 11 \\ |c^{2} | = \sqrt{ {a}^{2} + {b}^{2} } \\ c = \sqrt{ {11}^{2} + {11}^{2} } \\ c = 11 \sqrt{2} [/tex]

Answer:

Yes

Step-by-step explanation:

1/4+1/4+1/4=3/4 can also be written as

3*1/4

Answer:

42 and 21 are composite numbers

Answer:

The 12-pound bag of dog food.

Step-by-step explanation:

To find out which is the better buy you start by divinging 10.80 by 12 and then you divide 10.20 by 8 and you get .90 cents for the 12 pound while you get 1.275 dollars. Which means the 12 pound bag is the better by because it is less money per pound than the 8 pound bag.

Answer:

The answer is the 2nd option

Step-by-step explanation:

Answer: X = 1

Y= 5

Step-by-step explanation:

Plug in y = 3x + 2 in the Y coordinate to find X

-4x + 4(3x + 2) = 16

Now you can solve for X

X = 1

Then plug in 1 in the X coordinate to find Y

-4(1)+ 4y= 16

Now you can solve for Y

Y= 5

YOUR WELCOME

Answer:

Graph A

Step-by-step explanation:

The line is going to pass through -3 as the y intercept then you go over 4 blocks and up 3 of x

Answer:

Graph A

Step-by-step explanation:

If you take a pair of x,y coordinates from each graph and input it into the equation (y=3/4x-3), only Graph A makes the equation true.

Answer:

14.94 degrees higher

Step-by-step explanation:

all you gotta do is find the difference, -49.62 minus -34.68, i suggest a calculator for things that are more difficult to do in your head

Answer:

2 - sqrt(3)

Step-by-step explanation:

Split pi/12 into two angles where the values of the six trigonometric functions are known.

tan (pi/4 - pi/6)

Apply the difference of angles identity

[tex]\frac{tan(pi/4) - tan(pi/6)}{1 + tan(pi/4)tan(pi/6)}[/tex]

tan(pi/4) = 1 , tan(pi/6) = (sqroot3)/3

Plug in and Simplify

[tex]\frac{1-\frac{\sqrt{3} }{3} }{1+1\frac{\sqrt{3} }{3} }[/tex]

[tex]\frac{\frac{3-\sqrt{3} }{3} }{\frac{3+\sqrt{3} }{3} }[/tex]

[tex]\frac{3-\sqrt{3} }{3} *\frac{3}{3+\sqrt{3} }[/tex]

[tex]\frac{3-\sqrt{3} }{3+\sqrt{3}}[/tex] Need to multiply this by [tex]\frac{3+\sqrt{3} }{3+\sqrt{3} }[/tex]

Expand and simplify numerator: [tex]\frac{6}{(3+\sqrt{3} )^{2} }[/tex]

Expand and simplify denominator: [tex]\frac{6}{12+6\sqrt{3}}[/tex]

Cancel the common factor: [tex]\frac{1}{2+\sqrt{3}}[/tex]

Answer:

D: 1/2 - √3.

Step-by-step explanation:

The Unit Circle is a circle with radius 1 that is used to determine the value of sine and cosine of any angle.

But that table do not directly give the exact value so to solve for its exact value, express π/12 as a sum or difference of two angles where the values of the six trigonometric functions are known.

tan π/12 = tangent (π/4 - π/6)

Using the the difference of angles identity we get,

tan (π/4 - π/6) = (1 - √3 / 3) / (1 + 1 x √3 / 3)

Multiply by 3,

tan (π/4 - π/6) = (3 - √3) / (3 + √3)

Multiply by 3 - √3

tangent (π/4 - π/6) = (3 - √3)(3 - √3) / (3 - √3)(3 + √3)

FOIL and simplify.

tangent (π/4 - π/6) = 9 - 6√3 + 3 / 9 -3

tangent (π/4 - π/6) = 1/2 - √3

Answer:

2y^2-4y+2

Step-by-step explanation:

3y^2-4y+1-y^2+4-3

3y^2-y^2-4y+1+4-3

2y^2-4y+1+4-3

2y^2-4y+2

Answer:

assuming 10 cups it 10 parts then the answer is 4 cups of seltzer

Answer:

a) 198.7% interest

Not too sure about answer to (b)

b) 4.75% annualized  

Step-by-step explanation:

a) i used Interest = Principal x Rate x Time

   40 = 525 x [tex]\frac{14}{365}[/tex] x r

    40 = 20.13r

    r = 1.987 or 198.7%

b) i used this proportion:   [tex]\frac{1.98}{1/24}[/tex] = [tex]\frac{x}{1}[/tex]      'x' represents annualized rate

                                                             1/24 represents 2 weeks out of a year

1/24x = 1.98

x = 4.75%

Answer:

$162.50

Step-by-step explanation:

this is because 30°/• of 125 us 37.5 then if you add that you get 162.50

Answer:

aaaaaaaa

Step-by-step explanation:

Answer:

well 25x4=100 so multiply 23 by 4 and that would be 92 so you would have an A or 92%

Answer:

y-y1=m (x- x1)…………..(1)

Here m=1/2 and (x1,y1)= (4,-2)

(1) => y-4=1/2(x+2)

=> 2y-8=x+2

=> x-2y-10=0

So, equation of line is x-2y-10=0.

Answer:

w                  t                                   f

Step-by-step explanation:

Answer: Its kinda confusing lol

Step-by-step explanation:

I would help but I dont get it sorry

Answer:

K= -2s + 0.75x is answer

Step-by-step explanation:

I hope it's helpful!

Answer:

v

Step-by-step explanation: