The length of a rectangle is 12cm great her than twice it’s width. if the perimeter of the rectangle is 48 cm, calculate it’s length and width.

length = 20cm and width = 4cm✔️

Step-by-step explanation:

Perimeter of a rectangle = 2length + 2width } Equation 1

Since we know the length is 12cm greater than twice its width:

length = 2width + 12cm } Equation 2

We can substitute this value for length in the equation 1 :

Perimeter = 2(2width + 12cm) + 2width

Perimeter = 4width + 24cm + 2width = 6width + 24cm

Since we know the perimeter is 48cm, we can substitute here :

48cm = 6width + 24cm

6width = 48cm - 24cm = 24cm

width = 24cm/6 = 4cm✔️

Now we can substitute this value in the equation 2

length = 2width + 12cm } Equation 2

length = 2x4cm + 12cm = 8cm + 12cm = 20cm✔️

length = 20cm and width = 4cm✔️

Perimeter = 2length + 2width

Perimeter = 2x20cm + 2x4cm = 40cm + 8cm = 48cm✔️ checked!

stew reads at the fastest rate of 265 words per minute.

step-by-step explanation:

it's a given that felicia reads at 260 word per minute and on connie's graph we can see that she reads 200 words per minute. since stew's table tells us that he read 795 in 3 minutes, we can divide 795 by 3 to find out how many words he reads per minute.

795/3 = 265

stew reads 265 words per minute - he reads at the fastest rate since felecia reads at 260 words per minute and connie reads at 200 words per minute.

stew (265) > felecia (260) > connie (200)