bellpreslee7839 bellpreslee7839

01-09-2018
Mathematics

contestada

The width of a rectangle is 15 cm less than the length. the perimeter is 78 cm. find the rectangle's dimensions

Respuesta :

tramserran tramserran

07-09-2018

Length (L): L

width (w): L - 15

Perimeter (P) = 2L + 2w

78 = 2(L) + 2(L - 15)

78 = 2L + 2L - 30

78 = 4L - 30

108 = 4L

27 = L

width (w): L - 15 = 27 - 15 = 12

Answer: width = 12 cm, length = 27 cm

Answer Link

Otras preguntas

review the passage from "nothing gold can stay." then leaf subsides to leaf so Eden sank to grief so dawn goes down today which best identifies the mood cre

Wrap a fur coat around a thermometer. how does the temperature change?

Checking account A charged a monthly fee of $5 and a per-check fee of $0.25, and checking account B charged a monthly fee of $6 and a per-check fee of $0.15. Ho

What is the term for group leadership that emphasizes the completion of tasks?

I need help on 4 questions!

Which series shows levels of organization in order from the smallest to the largest structure? atom, molecule, cell, organism molecule, atom, cell, organ

article on generation gap

What is the source of energy that is released in an exothermic reaction? what absorbs the energy that is released ?

Reasons for the fall of the Roman Empire

Consider a wire that has resistance r, length l and the cross-sectional area a. the correct expression for the resistivity of that wire is: