Expand and simplify 3(x+2)+2(x-1)

2 answers:

3 0

If you would like to expand and simplify 3 * (x + 2) + 2 * (x - 1), you can do this using the following steps:

3 * (x + 2) + 2 * (x - 1) = 3 * x + 3 * 2 + 2 * x - 2 * 1 = 5 * x + 6 - 2 = 5 * x + 4

The correct result would be 5 * x + 4.

Elanso [62]4 years ago

3 0

3(x+2) + 2(x-1)
= 3x + 6 +2x -2
answer = 5x + 4

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Gavin and Jack are practicing shots against their goalie. On their last 15 attempts, Gavin made 6 and Jack made 7. Based on this

statuscvo [17]

Answer:

$\dfrac{14}{75}$

Step-by-step explanation:

Gavin made 6 out of 15 shots, so the probability that Gavin's next shot will be successful is

$\dfrac{6}{15}=\dfrac{2}{5}$

Jack made 7 out of 15 shots, so the probability that Jack's next shot will be successful is

$\dfrac{7}{15}$

The probability that they both make their next shot successfully is

$\dfrac{2}{5}\cdot \dfrac{7}{15}=\dfrac{14}{75}$

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4 years ago

Explain two methods for solving an equation. Give an example.

svlad2 [7]

For solving system of equations, we can use either substitution where we plug one equation into the other, or elimination where we combine the equations.

- Using elimination, you would to eliminate one variable from both equations, so you automatically would get one equation with one variable!

- Using substitution means you are going to solve one equation for one variable and substitute with its value in the other equation in order to get also an equation with one variable.

Let's take an example ...

y+x=2 and y-2x = 1

Using elimination, we need to subtract these two equation; one from the other...

y+x=2
-
y-2x=1
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0+3x=1

then x=1/3

and then substitute into any equation to get y-value
y+x=2
y+1/3 = 2 >>>>> y=5/3

NOW...Using substitution
y+x=2 and y-2x = 1 >>(y=1+2x)

Plug (y=1+2x) into y+x=2 and solve for x
y+x=2
(1+2x) + x =2
1+3x = 2
3x=1

again (and for sure) x = 1/3

plug in x=1/3 into any of the equations above to get y:
y+x=2
y+1/3=2
y=5/3

DOne !!!!!!

I hope you got the idea

If you still need help, just let me know.

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4 years ago

What is the answer for the equation n+11=2n

Alexeev081 [22]

$n+11=2n\\
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