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Lerok [7]
3 years ago
15

Simplify 6 - (-2) - 3(-5)

Mathematics
2 answers:
seraphim [82]3 years ago
8 0

So the first thing we need to do is multiply 3*-5, since order of operations dictates it (PEMDAS)

6-(-2)-(-15)

Now, whenever we see a minus negative number, we can think of it as adding a positive number

6+(+2)+(+15)

Now we just add them together

6+2+15 = 23

23 is the answer

siniylev [52]3 years ago
5 0

Explanation: This question's it's about the order of operations. It stands for p-parenthesis, e-exponents, m-multiply, d-divide, a-add, and s-subtract. It can also go left too right.

First, multiply from left too right.

3(-5)=-15

Then, rewrite the problem down.

6-(-2)-(-15)

Next, add/subtract from left too right.

6-(-2)-3(-5)

6+2-(-15)

6+2=8

8-(-15)

8+15

\boxed{=23}

Hope this helps!

Thank you!

Have a great day!

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Can anyone math experts help and guide me through these questions❓
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Step-by-step explanation:

The volume of a cube is

a {}^{3}

where a is the side length,

Note: If you want to remember this formula, know that a cube is basically a bunch of squares stacked on one another vertically and horizontally

The area of a square with side length a, is

{a}^{2}

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{a}^{2}  \times a =  {a}^{3}

That is the easy way to derive the formula of the volume of a cube.

Back on track, we know the volume so we must solve for a.

1.

125 =  {a}^{3}

Assuming you took algebra, to isolate the variable a, we must undo it being raised to the third power.

To do this, we take the cube root of both sides

\sqrt[3]{125}  =  \sqrt[3]{a {}^{3} }

The cube root of 125 is 5 so

5 = a

5 cm

2.

8 =   {a}^{3}

\sqrt[3]{8}  =  \sqrt[3]{ {a}^{3} }

2 = a

2 ft

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343 =  {a}^{3}

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7 yd

4.

1000 = a {}^{3}

10 = a

10 mm

5.

1728 =  {a}^{3}

a = 12

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1 =  {a}^{3}

a = 1

1 m

4 0
2 years ago
Read 2 more answers
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