Simplify 4 + (−3) − 2 × (−6)

Answers

Answer 1

Answer:

Keywords:

Simplify, expression, order of operation, PEMDAS

For this case we must simplify the given expression, we must take into account the order of operation (sequence in which operations must be performed) known as PEMDAS:

P: Parentesis

E: Exponents

M: Multiplication

D: Division:

A: Addition

S: Subtraction

In the given expression, we see that we have multiplication and addition, according to the PEMDAS rule, we must first do the multiplication:

So:

$4 + (-3) - 2 * (-6) =$

We multiply, taking into account that: $- * - = +$

$4 + (- 3) + 12 =$

We add similar terms:

$12+4-3=$

$16-3 =$

Different signs are subtracted and the sign of the major is placed:

$4 + (-3) - 2 * (-6) = 13$

Answer:

By simplifying $4 + (-3) - 2 * (-6)$ we get 13 as a result.

Answer 2

Answer: 2.-6=-12
4+(-3)-(-12)
13
Good Luck

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Natalie tried to evaluate the expression \left( 4^{-3} \cdot 2^{-3} \right)^{0}(4 −3 ⋅2 −3 ) 0 left parenthesis, 4, start superscript, minus, 3, end superscript, dot, 2, start superscript, minus, 3, end superscript, right parenthesis, start superscript, 0, end superscript. \begin{aligned} &\phantom{=}\left( 4^{-3} \cdot 2^{-3} \right)^{0} \\\\ &=\left( 8^{-3}\right)^{0} &\text{Step } 1 \\\\ &= 8^{0} &\text{Step } 2 \\\\ &=0&\text{Step } 3 \end{aligned} =(4 −3 ⋅2 −3 ) 0 =(8 −3 ) 0 =8 0 =0 Step 1 Step 2 Step 3 Did Natalie make a mistake? If so, in which step?

Answers

Given:

The expression is

$\left( 4^(-3) \cdot 2^(-3) \right)^(0)$

To find:

The Natalie's mistake.

Solution:

We have,

$\left( 4^(-3) \cdot 2^(-3) \right)^(0)$

Using properties of exponents, we get

$=\left( (4* 2)^(-3) \right)^(0)$ $[\because a^mb^m=(ab)^m]$

$=\left( (8)^(-3) \right)^(0)$

$=\left( 8 \right)^(0)$ $[\because (a^m)^n=a^(mn)]$

$=1$ $[\because a^0=1,\text{ where, a is any non zero number}]$

Therefore, Natalie make a mistake in Step 3. She write $8^0=0$ instead of $8^0=1$ .

Answer:

Step-by-step explanation:

Y=8 when x=20 find y when x= 30

Answers

Answer:

y=13

Step-by-step explanation:

if x=20 when y=8 (we can creat equation )

x=2y+4 (you can prove that the equation is correct by substitute )

so the question is if x=30 find the value of y

30=2y+4

30‒4=2y

26=2y

26/2=2y/2

13=y

i hope this helps you

Courtney reads around 110 words per minute. She procrastinated and now has less than a week to finish her reading assignment. If the book she needs to finish has another 820 pages left and each page has around 350 words, how many hours can Courtney complete her assignment?

Answers

820 pages X 350 words = 287,000 words

287,000 / 110 = 2.609.09 minutes

2.609.09 / 60 = 43.48 hours

It would take about 2 days of non-stop reading to finish her assignment

What is the domain of the function shown in the graph below?