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2 years ago

3x9+7 use pemdas right answers only

Mathematics

2 answers:

sertanlavr [38]2 years ago

6 0

Answer:

Step-by-step explanation:

3 x 9 + 7

Using PEMDAS M is first and M is multiplication so you multiply first.

27 + 7

You then add because that’s what is left.

Your answer is : 34

Hope it helps! Stay safe!

Katarina [22]2 years ago

3 0

Answer:

$\huge\boxed{\sf 34}$

Step-by-step explanation:

P = Parenthesis

E = Exponents

D = Division

M = Multiplication

A = Addition

S = Subtraction

<u>In that order:</u>

= 3 × 9 + 7

Multiplying first

= 27 + 7

Adding after

= 34

$\rule[225]{225}{2}$

Hope this helped!

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3 years ago

You go to an arcade and purchase a card with game credits. After playing 5 games you have 33 credits left. You play 4 more games

Amanda [17]

Answer:

$y=-3x+48$

Step-by-step explanation:

We will use slope-intercept form of equation to write our equation. The equation of a line in slope-intercept form is: $y=mx+b$ , where m= Slope of the line, b= y-intercept.

To write the equation that represents the number of credits y on the cards after x games, we will find slope of our line.

We have been given that after playing 5 games we have 33 credits left. We play 4 more games and we have 21 credits left. So our points will be (5,33) and (9,21).

Let us substitute coordinates of our both given points in slope formula: $m=\frac{y_2-y_1}{x_2-x_1}$ ,