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2 years ago

How do you do pemdas? Please help, I'm trying to teach my little brother and I forget

Mathematics

2 answers:

Fiesta28 [93]2 years ago

8 0

Answer:

Step-by-step explanation:

PEMDAS is a set of rules which are followed while solving mathematical expressions. These rules start with Parentheses, and then operations are performed on the exponents or powers. Next, we perform operations on multiplication or division from left to right. Finally, operations on addition or subtraction are performed from left to right.

dimaraw [331]2 years ago

8 0

Answer:

PEMDAS is parenthesis, exponent, multiplication, division, addition, and subtraction

Step-by-step explanation:

before anything, you have to check for anything in a parenthesis. If nothing check for any exponents. If nothing do multiplication, and then do all division (of course wherever necessary). After that, you do all of the addition, then subtraction. everything in this order

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Step-by-step explanation:

$16q^2-81=0\\16q^2=0+81=81\\16q=\sqrt{81} \\q=\frac{\sqrt{81}}{16}$

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2 years ago

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2 years ago

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Answer:

(X, Y, Z) = (-2, 3, 3)

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2 years ago

Which part of the graph best represents the solution set to the system of inequalities y<_ x+1 and y+x<_ -1

Pavel [41]

Hello!

Remember that the symbols: ≤ and ≥ are graphed as a solid line. While the symbols: < and > are graphed as a dotted line.

Also, before graphing, it would be better to convert both equations to slope-intercept form.

y ≤ x + 1 is already in slope-intercept form.

y + x ≤ -1 is not written in slope-intercept form. (Slope-intercept form: y = mx + b)

y + x ≤ - 1 (subtract x from both sides)

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Graphing those lines, you get the graph below. You can see that Part C best represents the solution set systems of inequalities, because that is where both of the shaded lines intersect.

Answer: Part C

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