dcdork13 dcdork13

03-02-2018
Mathematics

contestada

Using the guess and check technique, find two numbers that satisfy both conditions. The sum of the two numbers is 56. The second number is seven less than two times the first number. What is the value of the first number, x?

A.19
B.21
C.31
D.35

Respuesta :

JasonLai JasonLai

03-02-2018

So let's get two variables
x and y
X+Y=56
But with our formula...
3x - 7 = 56
x = 21
The answer is option B

Answer Link

TNSKermit TNSKermit

04-01-2019

Answer:

B.21

Step-by-step explanation

I Guessed and Got it right

Answer Link

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