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

4,650 Rounded to the hunred

what is 3x-4y=4 in linear equations

what are the factors of the following quadratic equation 12=x^2-x

Describe the conflict Gawain faces in the castle?

Which is the Best action to take during an earthquake? A: If outdoors, seek the shelter of a sturdy building. B: If inside, seek protection from windows and h

What happens to a sample of matter when it's particles lose kinetic energy?

what was roger character traits in thank you ma'am by langston hughes

what is s squared +2x-35 factor

What was the result of Vietnam’s civil war in 1975? A. American involvement helped the democratic South defeat the communist North, and a republic was establish

In the summer Brian saw 20 movies at the theater. in the fall he saw one fourth as many movies. Write an equation that shows how many movies he saw in the fall