When is a variable solved for?

1 answer:

4 0

Answer:Let's say you're being asked to solve for y and the problem looks like this: 16x+4y=20. Basically what's being asked here is to get all the numbers on the other side of the equal sign so that y is by itself, i.e. y=(all the other things you've put on the other side of the equal sign).

Step-by-step explanation:

Different ways to solve equations. We have 4 ways of solving one-step equations: Adding, Substracting, multiplication and division. If we add the same number to both sides of an equation, both sides will remain equal.

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Alex's friends have collected 180 gold coins to give to charity. Alex decides he wants to donate some gold coins also, so he add

elena55 [62]

9/10=180/x
x=200

8/10=180/x
(180*10)/8
(180*5)/4
x= 225

225-200=25
Answer: 25
I THINK

8 0

3 years ago

Factorise fully 2x+8

madreJ [45]

Answer: 2(x + 4)

Explanation: If you're asked to factor a polynomial,

the first thing you want to look for is the greatest common factor

for the terms that are involved.

The greatest common factor of 2x and 8 is 2.

So a 2 can factor out.

Inside the parenthses, we have each term divided by

the 2 that factored out of the polynomial.

So we have 2(x + 4).

6 0

3 years ago

Read 2 more answers

A diner has collected data about customer coffee-drinking habits. They have calculated that P(cream) = 0.5, P(sugar) = 0.6, and

luda_lava [24]

$\mathbb P(\text{cream or sugar})=\mathbb P(\text{cream})+\mathbb P(\text{sugar})-\mathbb P(\text{cream and sugar})$
$0.7=0.5+0.6-\mathbb P(\text{cream and sugar})$
$\mathbb P(\text{cream and sugar})=0.4$