brannatalaNiestine brannatalaNiestine

09-04-2017
Mathematics

contestada

One number is 1/2 of another number. The sum of the two numbers is 21. Find the two numbers. Use a comma to separate your answers

Respuesta :

dantabluecheese dantabluecheese

11-04-2017

2x=y
x+y=21
x+2x=21
3x=21
x=7
y=2x
y=14

Answer Link

Otras preguntas

Suppose a coin is tossed 3 times. Find the probability of obtaining exactly one head.

What's the circumference of the world

What are your opinions on this? Consider the media’s role as a linkage institution. What problems does America experience in having a free press to cover its ow

what development was the key to humans settling into permanent communities?

solve for 2 unknowns : 3a+4b=9 ; 2a+2b=6

What probably explains why the Maya used 20-day segments in their ritual calendar and 20-day months in their solar calendar ? Please give me a quality answer

Quadrilateral ABCD is a parallelogram in which angle B = 100 degrees angle A + angle B =

There is usually a large black market presence in which economy?

What is the sign of a 2b when a=5 and b=2? Does the sign of the product depend on the sign of a,the sign of b, or the signs of both a and b? Explain A.) when a

Which of the following statements is false? a. An amendment can be proposed by a 2/3 vote in the House of Representatives. b. An amendment can be proposed a n