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4 years ago

When doing simple math, what does the term PEMDAS mean?

Mathematics

2 answers:

USPshnik [31]4 years ago

8 0

Answer:

p- perentathis ( )

E- exponints

M- Multiplication

D- divishion

A-addition

s- subtraction

( sorry about my spelling)

Klio2033 [76]4 years ago

7 0

Please-parentheses --------- (_)

Excuse-exponent-------------- ^2

My-multiply ---------------------- X

Dear-divide ---------------------- /

Aunt-addition ------------------- +

Sally-subtraction --------------- -

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(7 + 41) ÷ 2 – 15 =? <br><br> Find the solution for this question.

koban [17]

precedence is:

1 Parentheses (simplify inside 'em)

2 Exponents

3 Multiplication and Division (from left to right)

4 Addition and Subtraction (from left to right)

(7+41) = 48

48 ÷ 2 = 24

24 -15 = 9

6 0

2 years ago

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Find the surface area and show work

Law Incorporation [45]

Answer: $1,270in^2$

Step-by-step explanation:

The surface area of a rectangle can be calculated with:

$Area_{rectangle}=lenght*width$

The surface area of a trapezoid can be calculated with:

$Area_{trapezoid}=\frac{height}{2}(Larger\ base+Smaller\ base)$

Calculate the area of the base, wich is a rectangle:

$A_{1}=(34in)(15in)=510in^2$

There are two equal rectangles, therefore, multiply the area of any of them by 2:

$A_{2}=2(15in)(13in)=390in^2$

Calculate the area of the other rectangle:

$A_{3}=(15in)(10in)=150in^2$

There are two equal trapezoids, therefore, multiply the area of any of them by 2:

$A_4=\frac{2(5in)}{2}(34in+10in)=220in^2$

Therefore, the surface area will be the sum of all the areas calculated:

$SA=A_1+A_2+A_3+A_4\\\\SA=510in^2+390in^2+150in^2+220in^2\\\\SA=1,270in^2$

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3 years ago

Find the mean of the data summarized in the given frequency distribution. Compare the computed mean to the actual mean of 50.7 d

Svet_ta [14]

Answer: The mean of the frequency distribution is 51.7°.

The computed mean 51.7° is greater than the actual mean 50.7° .

Step-by-step explanation:

The given table :

Low Temperature (°F) Frequency Mid -value

Class interval f x fx

40-44 2 42.5 85

45-49 7 47.5 95

50-54 9 52.5 105

55-59 5 57.5 115

60-64 1 62.5 25

$\text{Now, Mean}=\dfrac{\sum fx}{\sum f}\\\\=\dfrac{85+332.5+472.5+287.5+62.5}{24}\\\\=\dfrac{1240}{24}=51.6666666667\approx51.7$

The computed mean 51.7° is greater than the actual mean 50.7° .

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3 years ago

A sanitation company charges $4 per bag for garbage pickup plus a $10 weekly fee. a restaurant has 14 bags of g garbage. what wi

Alex

4x14=56 Add $10 to that = $66 is what they will pay.

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4 years ago

Last question from this huge packet (more than 20 questions). Will somebody help me please. I have Science to do after this.

brilliants [131]

The correct answer is D

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3 years ago

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