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

Please help me with this geometry question :((

Una máquina llena 4 baldes de helado en 30 minutos, funcionando siempre a la misma velocidad Si ante un corte de luz, solo funcionó durante 45 minutos, ¿cuántos

*DIFFICULT QUESTION, PLEASE ANSWER ASAP * *MAKE SURE YOU PROVIDE DETAILS* Without knowing their diameters, which sporting ball has the smaller surface area--a g

what is the world smallest number that is divisible by all the numbers 1,2,3,4,5,6,7,8,9,10?

Is 3/4 = 9/12 greater or less than 1/2

Help me please, ;) I could use it

Letícia leaves the grocery store and walks 150.0 m to the parking lot. Then, she turns 90° to the right and walks an additional 70.0 m to her car. What is the m

Which equation could generate the curve in the graph below?

54x^3y+ 81x^4y^2 factorise

Describe the significance of Grant’s meeting Lee at the Appomattox Courthouse. please