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Natasha_Volkova [10]
2 years ago
11

Help me with this I'm trying to win a bet8 ÷ 2 (2 +2)​

Mathematics
2 answers:
adelina 88 [10]2 years ago
5 0

Answer:

16

Step-by-step explanation:

Because of the rule of PE(MD)(AS) the following would be executed like this

8 / 2 (2 + 2)

8 / 2 x 4

4 x 4

16

Therefore, the answer would be 16.

EDIT: This answer was previously incorrect but has been fixed. Calculator confirmed as well. Thank you User emmab2457 in the comments for bringing this to my attention.

The reason the answer is not 1 is because in the term PE(MD)(AS) the Multiply/Divide construct as well as the Addition/Subtraction can be switched, and once reaching this step the equation is solved from Left to Right, no matter if division is before multiplying.

lawyer [7]2 years ago
3 0
Answer is 1 because (PEMDAS)
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A rectangular block has square base of area 64 cm². If the thickness of the block is 5 cm, find its total surface area. ​
Andrej [43]

Answer:

total surface area of cube is <u>6 * area of one side</u>

therefore area of one side is given 64cm^2

thickness is also given 5cm .

TSA is 64*5 = 320cm^2

hope it is helpful

4 0
2 years ago
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What is the sum of the first 70 consecutive odd numbers? Explain.
expeople1 [14]

The sum of the first n odd numbers is n squared! So, the short answer is that the sum of the first 70 odd numbers is 70 squared, i.e. 4900.

Allow me to prove the result: odd numbers come in the form 2n-1, because 2n is always even, and the number immediately before an even number is always odd.

So, if we sum the first N odd numbers, we have

\displaystyle \sum_{i=1}^N 2i-1 = 2\sum_{i=1}^N i - \sum_{i=1}^N 1

The first sum is the sum of all integers from 1 to N, which is N(N+1)/2. We want twice this sum, so we have

\displaystyle 2\sum_{i=1}^N i = 2\cdot\dfrac{N(N+1)}{2}=N(N+1)

The second sum is simply the sum of N ones:

\underbrace{1+1+1\ldots+1}_{N\text{ times}}=N

So, the final result is

\displaystyle \sum_{i=1}^N 2i-1 = 2\sum_{i=1}^N i - \sum_{i=1}^N 1 = N(N+1)-N = N^2+N-N = N^2

which ends the proof.

5 0
2 years ago
Please answer! Correct answers get brainiest.
egoroff_w [7]

Answer:

7/5 y --> y+ 2/5y

0.68y --> y - 0.32y

3/5y --> y - 2/5y

1.32y --> y+ 0.32y

Step-by-step explanation:

Pretend there is a 1 in front of each y that doesn't have a number (coefficient) in front of it. 1 = 5/5, and then just solve for the fraction expressions.

7 0
3 years ago
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crimeas [40]
The last set (choice D) is a subset of given set B.

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6 0
3 years ago
Match the mean median mode and range for the data set below 16 9 20 10 12 6 8 15
blsea [12.9K]

Answer:

12 is mean     11 is median     range is 14

Step-by-step explanation:

For the Mean

Add all the numbers up

16 + 9 + 20 + 10 =55

12 + 6 + 8 + 15 = 41

55 + 41 = 96

There are 8 numbers so we divide by 8

96/8 = 12

Range is Smallest number minus biggest so 20 - 6 = 14

6 0
3 years ago
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