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Ahat [919]
3 years ago
8

3(7 + 4)2 − 14 ÷ 7. i need help and the 2 is squared

Mathematics
2 answers:
olga2289 [7]3 years ago
8 0

(this answer has been removed)

lorasvet [3.4K]3 years ago
3 0

Answer:

361

Step-by-step explanation:

To solve this you need to use the Order of Operations or PEMDAS.

The Order of Operations is Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction.(PEMDAS)

So first you need to solve what's in the parentheses which is 7 + 4, this equals 11.

Then rewrite the problem as 3*11^2 - 14/7

Next you need to solve the exponents which is 11 squared. So 11 squared equals 121.

3*121 - 14/7

Now you need to multiply 3 by 121 since multiplication comes next in the order of operations. So 3*121 = 363

363 - 14/7, Next you need to divide 14 by 7 which is 2.

363 - 2, 363 subtracted by 2 is 361

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A triangular frame has sides that measure 15'-7",20'-4" and 26'-2". What is the total length of three sides?
tatuchka [14]

we know that

1\ foot=12\ inches

1'=12"

<u>Part 1) </u>

we know that

side 1=15'-7"

side 2=20'-4"

side 3=26'-2"

To find the total length of three sides sum the three sides

so

total length=side 1+side 2 +side 3

substitute

total length=15'-7"+20'-4"+26'-2"

total length=(15'+20'+26')+(7"+4"+2")

total length=(61')+(13")

remember that

12"=1'

13"=12"+1"=1'+1"

substitute

total length=(61')+(1'+1")

total length=(62')+(1")---------> 62'-1"

therefore

<u>the answer is</u>

the total length of three sides is 62'-1"

5 0
3 years ago
Verify the identity. 4 csc 2x = 2 csc2x tan x
vlada-n [284]

Step-by-step explanation:

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Now we multiply top and bottom by sin(x) because we need tan(x) in our answer

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6 0
3 years ago
From a standard deck of cards, what is the probability that you choose a red card and then choose a 3 assuming you replaced the
Hunter-Best [27]
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3 0
3 years ago
Read 2 more answers
The calculation of the mean of a population and the expected value of the probability mass function of a Random Variable (RV) ar
Zanzabum

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answer:

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Answer:

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Step-by-step explanation:

5 0
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