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

How do scientists use seismic waves to determine the interior structure of Earth?

which factor made the most difference in how agriculture affected the economies of the colonies?

Does every point lie in a quadrant?

Write a system of equations with a solution (4,–3)

How did scientists discover the common structure of cells?

Natalie earns $2.50 for each cd she sells and $3.50 for each dvd she sells. Natalie sold 45 dvds last year. She earned a total of $780 last year selling cds a

Which of the following can be considered fossils? a. a 1 billion year-old rock. b. a 1 billion year-old piece of amber. c. a 1 billion year-old piece of amber w

Which of the kingdoms has the smallest number of known species

Why was is difficult for the Arab people to form one nation?

What is biogeography and what does it provide?