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3 years ago

Can someone explain how to do this step by step please Order Of Operations: Parentheses in PEMDAS

Mathematics

2 answers:

guapka [62]3 years ago

5 0

Answer:

3/4 or 0.75

Step-by-step explanation:

logic

Firdavs [7]3 years ago

3 0

Answer:

27/4 or 6.75

Step-by-step explanation:

P-parantheses(you do this first)

E-exponents(you do this second)

M-Multiplication(division and multiplication are interchangeable, you go with whichever operation is on the left first)

D-Division(interchangeable with multiplication)

A-addition(just like multiplication and division, for addition and subtraction do whichever operation is on the left)

S-subtraction(interchangeable with add.)

since in pemdas, parantheses are first, we will do those:

(6*3/2)=18/2

18/2=9

now, 9÷4/3

remember, we keep the first term the same, flip the sign to multiplication and turn the second fraction(reciprocal) upside down:

9*3/4=27/4

27/4 or 6.75

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Andru [333]

Answer:

$\left(4p-7\right)\left(3p^2+7\right)$

Step-by-step explanation:

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$7\left(4p-7\right)$

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kozerog [31]

Answer:

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Step-by-step explanation:

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3 years ago

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What is the probability of rolling a number greater than or equal to 9 with the sum of two dice, given that at least one of the

olga55 [171]

Conditional probablility P(A/B) = P(A and B) / P(B). Here, A is sum of two dice being greater than or equal to 9 and B is at least one of the dice showing 6. Number of ways two dice faces can sum up to 9 = (3, 6), (4, 5), (4, 6), (5, 4), (5, 5), (5, 6), (6, 3), (6, 4), (6, 5), (6, 6) = 10 ways. Number of ways that at least one of the dice must show 6 = (1, 6), (2, 6), (3, 6), (4, 6), (5, 6), (6, 6), (6, 5), (6, 4), (6, 3), (6, 2), (6, 1) = 11 ways. Number of ways of rolling a number greater than or equal to 9 and at least one of the dice showing 6 = (3, 6), (4, 6), (5, 6), (6, 3), (6, 4), (6, 5), (6, 6) = 7 ways. Probability of rolling a number greater than or equal to 9 given that at least one of the dice must show a 6 = 7 / 11

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3 years ago

A machine covers 5/8 square foot in 1/4 hour. what is the unit rate?

Ilia_Sergeevich [38]

we know that

Unit Rate is the ratio of two measurements in which the second term is one

to find the unit rate divide $(5/8)$ by $(1/4)$