rosegold3806 rosegold3806

02-11-2017
Mathematics

contestada

A teacher has 100 pencils in a cup. 16 are more sharp than dull. How many are dull and how many are sharp?

Respuesta :

jmja59oyri47 jmja59oyri47

02-11-2017

x = dull pencils
y = sharp pencils
x + y = 100
y = x + 16 ~~Plug this back into your original x+y equation.
x+x+16=100 ==> 2x = 84 ==> x = 42. Plug this back into the y = equation
y = 42 + 16 ==> y = 58.

42 Dull, 58 sharp.

Answer Link

Otras preguntas

Use the proportion below to determine 30% of 20.

Which of the following is a geometric sequence? * O -1, -3,9,27,... 0 -1,2 -4,8.... O 1,4,9,16,... O 1,3,5,7,...

Which of the following is a unit of volume? O A. A cubic centimeter OB. A kilogram O C. A meter O D. A gram

What do you remember about the Compromise of 1850 or the events that led to it being passed?

A firm has to choose between two technologies; both produce same output with one being labor intensive and other being capital intensive. The firm will use labo

Escribe la configuración electrónica de los elementos que poseen, ¿de qué elementos se trata?: 15 electrones 27 electrones 56 electrones 49 electrones

need help im struggling

The current through a heater is 12 A when it is plugged into a 120 V source. What is the resistance of the heater? A. .10Ω B. 10Ω C. 132Ω D. 1440Ω

To make dough, Reba needs 2 cups of flour. How much flour does she need to make 5 batches of dough?

21r-7-r+5=-52 solve for r