The students in a class were asked which hand they preferred to use
for writing. The bar graph shows the results. Find the total number of
students who had a preference.

Answer:

x=20, y=100

Step-by-step explanation:

3x+2x=7x-40

5x=7x-40

2x=40

x=20

7x-40=y

140-40=y

100=y

y=100

According to the exterior angle theorem, the two remote interior angles are equal to the exterior angle. This is why we set 3x+2x equal to 7x-40.

According to the vertical angles theorem, two angles that are opposite and formed by two intersecting straight lines are equal. This is why we set 7x-40 equal to y.

Because we already knew that x was 20, we could put it into our equation. (7*20)-40=y.

Hope this helped! :D

Step-by-step explanation:

f(g(x))

= f(4x)

= (4x) - 3. (A)

Step-by-step explanation:

option A is the correct answer according to my opinion .

plz mark my answer as brainlist if you find it useful.

Answer:3500 miles

Step-by-step explanation:

1=50

meaning that we can do 70x50

which equals 3500

Answer:

3,500

Step-by-step explanation:

1in = 50 miles

70 in x 50 miles - 3,500, so therefore

70 in = 3,500 miles

hoped i helped you!

Answer:

Volcanic gray

Step-by-step explanation:

I think because Volcanic Gray and Gray Fox look pretty close to the same color.  Sorry if it is wrong.

Answer:

Its A

Step-by-step explanation:

7x + 3 =17

            -3  ( 17 -3 = 14)

7x =  14.  (14 divided by 7)

u get x=2

Answer:

1/3 - 1/4 = 1/12Step-by-step explanation:

Answer:

Store C

Step-by-step explanation:

store a is selling 10 pencils for $2.50

$2.50 divided by 10 is 25 cents

so the price for store a is 25 cents per pencil

store b is selling 50 pencils for $6.00

$6.00 divided by 50 is 12 cents

so the price for store b is 12 cents per pencil

store c is selling 100 pencils for $8.25

$8.25 divided by 100 is 8.25 cents

obviously you can't give someone .25 cents so round it down to 8

so the price for store c is 8 cents per pencil

store d is selling 250 pencils for $21.25

$21.25 divided by 250 is 8.5 cents

which rounds up to 9 cents per pencil

Store c has the lowest price for one pencil

Answer:

See explanation

Step-by-step explanation:

8x = 3y + 38  

24= 6y + 9x  

Rearrange;

3y - 8x = -38       * 2     -------(1)

6y + 9x = 24       * 1       -------(2)

6y - 16x = -76    -------(3)

6y + 9y  = 24    -------(4)

Subtract (4) from (3)

     -25y = -100

      y= 100/25

     y = 4

Substitute y =4 into(1)

3y - 8x = -38    

3(4) - 8x = -38

12 -8x = -38

-8x = -38 - 12

x = 50/8 = 6 2/8

2) 6 = 2x + y

7x = 3 - 3y

Rearrange;

2x + y = 6            * 3    --------(1)

7x + 3y = -3         * 1     --------(2)

6x + 3y = 18        ---------(3)

7x  + 3y = -3        ---------(4)

Subtract (4) from (3)

-x   = 21

x = -21

Substitute x = -21 into (1)

2x + y = 6

2(-21) + y = 6

-42 + y = 6

y = 6 + 42

y = 48

3)  

11x = 5 + 10y

7y = -2x +45

Rearrange

11x - 10y = 5          * 2  ---------(1)

2x + 7y   = 45       * 11  ---------(2)

22x - 20y = 10     --------(3)

22x + 77y = 495  --------(4)

Subtract (4) from (3)

       -97y  = -485

          y =  5

Substitute y =5 into (1)

11x - 10y = 5  

11x - 10(5) = 5

11x - 50 = 5

11x = 5 + 50

11x = 55

x = 55/11

x = 5

Answer:

x=8

Step-by-step explanation:

Answer:

3x + 4 = 20

_-_4_-_ 4_

   _3x_ =_ 16_

       3         3

Step-by-step explanation:

x = 16_

       3

Answer:

Make 1/8 a reciprocal which would be 8/1 so 3/4 x 8/1 is 24/4 = 6

Answer:

w=35°

x= 90°

y=55°

z=35°

Step-by-step explanation:

i just did it. It should be right

Answer:

Hope this helps! :')

Step-by-step explanation:

Opposite sides are equal in length and opposite angles are equal in measure. To find the area of a parallelogram, multiply the base by the height. The formula is: A = B * H where B is the base, H is the height, and * means multiply

Answer:its c i took the test

Step-by-step explanation:

im right

C 89.54 goes to A

D goes to B

A goes to C

B goes to D

F goes to E

Since the laptop is on sale, that would make it $206.99.

Answer:

c) (1,-3)

Step-by-step explanation:

-3<3(1)+1

-3<3+1

-3<4

Answer:

thanks

Step-by-step explanation:

Answer:

Dirty unwashed hands

Step-by-step explanation:

Answer:

Clean hands and clean food

Step-by-step explanation:

jk

Answer:

0.82

step-by-step explanation:

Answer: the answer is 55

Answer:

Depends on how many gallojs but 4 quarts per gallon

Step-by-step explanation:

Answer:

it is 24

Step-by-step explanation:

I just know it cuz I did it. hope it helps u :)

Answer:

More than one

Step-by-step explanation:

Trust me, I know.

Answer:

none

Step-by-step explanation:

i have proof i just took the test

Answer:

y = -2x + 8

Step-by-step explanation:

(−6, 20) and (0, 8)

First you want to find the slope of the line that passes through these points. To find the slope of the line, we use the slope formula: (y₂ - y₁) / (x₂ - x₁)

Plug in these values:

(8 - 20) / (0 - (-6))

Simplify the parentheses.

= (-12) / (6)

Simplify the fraction.

-12/6

= -2

This is your slope. Plug this value into the standard slope-intercept equation of y = mx + b.

y = -2x + b

To find b, we want to plug in a value that we know is on this line: in this case, I will use the second point (0, 8). Plug in the x and y values into the x and y of the standard equation.

8 = -2(0) + b

To find b, multiply the slope and the input of x(0)

8 = 0 + b

b = 8

Plug this into your standard equation.

y = -2x + 8

This is your equation.

Check this by plugging in the other point you have not checked yet (-6, 20).

y = -2x + 8

20 = -2(-6) + 8

20 = 12 + 8

20 = 20

Your equation is correct.

Hope this helps!

Answer:

I think the answer would be 6.0x10¹

If 60 was in scientific notation it would look like 6.0 because there is only one zero and we would need to move the decimal one place to the right. So we multiply 10¹ so we can move that decimal to the right to make 60.

Answer:

9[tex]\pi[/tex]

Step-by-step explanation:

r=3

Area of circle: [tex]\pi[/tex][tex]r^{2}[/tex]

Answer:

y= 28x+8

Step-by-step explanation:

Answer:

(x, y) --> (2/3x, 2/3y)

Step-by-step explanation:

Answer:

I'm not sure if this is correct

24

Step-by-step explanation:

8:3

?:9

9÷3=3

So then you would be able to times 8 by 3 also which gives you 24

It's just a guess, sorry if it doesn't help

Answer: