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Firlakuza [10]
3 years ago
8

Which of these is equal to the value of 9 – (–5)?

Mathematics
2 answers:
svet-max [94.6K]3 years ago
5 0

For this case we must find an expression equivalent to:

9 - (- 5)

By properties of the multiplication of the signs we have to:

- * - = +

Thus, we can rewrite the given expression of the form:

9 + 5

Therefore, the correct option is the option to: 9 + 5.

Answer:

Option A

9 + 5

DerKrebs [107]3 years ago
3 0
14.



Subtracting a negative number is like adding a positive number. So, you can change 9 - (-5) into 9 + 5, which is much simpler. Then, just add to get 14.



Please consider marking this answer as Brainliest to help me advance.
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Step-by-step explanation:

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3 years ago
Two integers, a and b, have a product of 36. What is the least possible sum of a and b?
Minchanka [31]
<h3>Answer:  12</h3>

==============================================================

Explanation:

The two integers multiply to 36, so,

ab = 36

which solves to

a = 36/b

Then we want to add the numbers such that we get the smallest possible result.

a+b = (36/b)+b

So we want (36/b)+b to be as small as possible.

Let's say we replace b with x and we consider this function

f(x) = (36/x) + x

The goal is to find when f(x) is smallest, ie, we want to minimize the function.

If we were to graph out the function, we get the curve shown below.

To make things easier, we'll only focus on positive values of x.

The lowest part of the curve is what we're after. Using the "minimum" function/feature on the graphing calculator, we would then find the lowest point occurs at (6,12). This point is considered a local minimum because it's the lowest point in that given neighborhood of x values.

So the input x = 6 leads to the smallest output f(x) = 12.

This in turn means b = 6 is going to pair with a = 36/b = 36/6 = 6.

In short, a = 6 and b = 6.

----------------------

As a check,

a*b = 6*6 = 36

a+b = 6+6 = 12

We can make a table of various values to help confirm that 12 is the smallest sum.

Side note: If you're not allowed to use a graphing calculator, then you'll need to use calculus.

8 0
2 years ago
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Answer:

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Step-by-step explanation:

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7 0
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Angelina_Jolie [31]

Answer:

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Step-by-step explanation:

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6 0
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