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o-na [289]
3 years ago
6

How do you use PEMDAS?

Mathematics
2 answers:
Soloha48 [4]3 years ago
8 0

Answer:

first you do whats inside the  Parenthesis

then you do the exponents

then you multiply

then you divide

then you add

then you subtract

Step-by-step explanation:

(6–2)+2/3

According to PEMDAS, Numbers in parentheses are the first thing to solve in these types of questions. In this case, we would get:

(4)+2/3

Now, instead of doing the easy thing and going straight to adding 3 with 2/3 (which could alter our answer), we will look to PEMDAS.

Division comes before addition, so we do that first.

So then we get 4+0.67

=4.67

Therefore, whenever faced with a simple equation with just numbers, one should always look to PEMDAS as a method to outline the process with which they solve the question.

In very simple cases, it is also called DMAS, where parentheses and exponents are neglected.

IRINA_888 [86]3 years ago
8 0

Answer:

PEMDAS is the acronym for brackets, exponents, division, subtractions, multiplication. Given two or more operations, the PEMDAS letters series tells you, before the calculation is complete, what you can measure first, second and third.

~DjMia~

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Step-by-step explanation:

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3 years ago
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Social media is popular around the world. Statista provides estimate of the number of social media users in various countries in
amm1812

Answer:

Kindly check explanation

Step-by-step explanation:

The data table :

Use of SM _UK _China _ Russia _US _ col total

Yes ______480 __215 ___343 __640 _ 1678

No _______320 _ 285 ___357__ 360 _ 1322

Row Total__ 800 _500 __ 700_ 1000_ 3000

H0 : p1 = p2 = p3 = p4

H1 : p1 ≠ p2 ≠ p3 ≠ p4

Test statistic :

χ² = Σ(observed - Expected)² / Expected

Expected value of each cell = (Row total * column total) / N

N = grand total

Expected Values:

447.467 _279.667 _ 391.533 _ 559.333

352.533 _ 220.333 _ 308.467 _ 440.667

χ²=(2.36536+14.9527+6.01605+11.6337+3.00232 18.9793+7.63611+14.7665) = 79.352

Degree of freedom, df = (row-1)*(column-1) = (2 - 1) * (4 - 1) = 1 * 3 = 3

Using the Pvalue from Chisquare calculator :

Pvalue(79.352, 3) = 0.00000000001

Decision region :

Reject H0 ; If Pvalue < α

α = 0.05

Since 0.000000001 < 0.05 ; Reject H0 and conclude that not all population proportion are equal.

Sample proportion :

Phat = number of yes, x / total

For UK, Phat = 480/800 = 0.6

For China , Phat = 215/500 = 0.43

For Russia , Phat = 343/700 = 0.49

For US, Phat = 640/1000 = 0.64

7 0
3 years ago
A triangle has vertices A(1, 1), B(2, 4), and C(4, 2). Line p is parallel to side AB and contains point C.
kenny6666 [7]

Answer:

p:y = 3x-10

Step-by-step explanation:

We are given the following in the question:

A(1, 1), B(2, 4), C(4, 2)

i) Slope of AB

A(1, 1), B(2, 4)\\\\m = \dfrac{y_2-y_1}{x_2-x_1}\\\\m = \dfrac{4-1}{2-1}=3

Thus, slope of AB is 3.

ii) Point slope form

The point slope form of a line can be written as:

y - y_1 = m(x - x_1)

The point intercept form of line can be written as:

y = mx + c

The line is parallel to AB and contains point C(4, 2). Since line p is parallel to AB, line p will have the same slope as line AB

Putting values, we get,

y - 2 = 3(x-4)\\y = 3x-12+2\\y = 3x-10

which is the required slope intercept equation of line p.

4 0
3 years ago
At your full-service. 500 room hotel, typically, 1/4 of the guests will request
monitta
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5 0
3 years ago
Is 0.06 greater than 0.0582
Art [367]

Yes, 0.06 is greater than 0.0582.

If we look at the hundreths place, we can see 6 and 5. 6 is greater than 5 which proves that 0.06 is greater.

Best of Luck!

5 0
3 years ago
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