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Mary Lou has 2 more nickels than pennies, and she has 30 coins all together. Use x for the number of pennies.
a) 2(x + 2) = 30
b) x + (x + 2) = 30
c) 2x + 30 = 5
d) x + 2 = 30

Respuesta :

iamanthony
let y be the number of nickels

x+y=30....(1)
y-2=x.......(2)
From(2) y-2=x
y=x+2....(3)
Sub(3)into(1)
x+(x+2)=30

Thats why the ans is B

The Option D - x + 2 = 30  is correct.

We have Mary Lou who has 2 more nickels than pennies, and she has 30 coins all together.

We have select the correct alternative from the options mentioned to represent the situation.

Define a linear equation in one variable.

An equation of the form ax + b = 0 such that a, b are real in nature and the coefficients of the variable x is not zero is called a linear equation in one variable.

Let us suppose that Mary has x number of pennies. Then, according to the question -

x + 2 = 30

Hence, the Option D is correct.

To solve more questions on linear equations, visit the link below -

brainly.com/question/14304114

#SPJ2

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