Hannah has a grid a squares that has 12 rows with 15 squares in each row. she colors 5 rows of 8 squares in the middle of the grid blue. she colors the rest of the squares red. how many squares does hannah color red?

140

Explanation:

Each row has a total count of 15 squares

There are a total of 12 rows thus total squares is  

12

×

15

=

180

Colored blue  

→

5 rows of 8  

→

5

×

8

=

40

Rest are red: Total count - blue  

→

180

−

40

=

140

Hannah colors 140 squares red.

12*15=180

5*8=40

180-40=

140

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3

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step-by-step explanation:

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