Algebra help please

Mathematics

2 answers:

MissTica2 years ago

8 0

The missing number is 33 because when you times -4 and 33 together it will give you -132 and then when you add -132 to 16 your answer will be -116.

Ierofanga [76]2 years ago

3 0

We will let x be the missing number.

In the question it says -4 times a number plus 16 is equal to 116. How can we build from the statement into an equation? First off, "a number" is our x variable. So, the left-hand side can be -4x + 16. What about the right-hand side? Well, in the question it states that -4 times a number plus 16 is -116. "Is" in mathematics can mean equal.

Now we have our equation.

-4x + 16 = -116

Solve for x.

Subtract each side by 16.

(-4x + 16) - 16 = -116 - 16 =
-4x = -132

Divide both sides by -4.

-4x / -4 = -132 / -4 =
x = 33

So, x is equal to 33.

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Is this wrong?

sammy [17]

Step-by-step explanation:

The last step is a little wrong. Lemme show you:

x(x + 2) + (x + 2)

Imagine there is an invisible '1' infront of (x + 2) like this:

= x(x + 2) + 1(x + 2)

Now we can combine the like terms together:

= (x + 1)(x + 2)

This is the correct factorization.

4 0