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Ghella [55]
3 years ago
12

How do I solve 93 + (68+7)

Mathematics
2 answers:
kirza4 [7]3 years ago
7 0

93+(68+7)

=93+68+7

=100+68

=168

emmasim [6.3K]3 years ago
6 0
(1)First you your supposed to do the (inside of parenthesis ALWAYS!) 
so for example:
(2)93+ (75)  < ------68+7= 75
(3) Then you do whats left on the outside! 
for example: 93+75= 168-----> 168 is your answer!
do you get it? I'm going to give you one more problem in case!

250- (23+34) 

remember always do whats in the parenthesis first!

(1) 250 - (57)
(2) gather everything of whats left outside after you do whats in the parenthesis first! so lastly its------> 250-57= 193! 

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Which expression is equivalent to 60 Σ n=1 (2n − 1)2 ? Check all that apply.
Hunter-Best [27]

9514 1404 393

Answer:

  B, D

Step-by-step explanation:

The quadratic expands to ...

  (2n -1)² = (2n)² +2(2n)(-1) +(-1)² = 4n² -4n +1

The coefficients can be factored out of the sum, so ...

  ∑(4n²) = 4∑n² for example

The sum of 60 ones is 60:

  \displaystyle\sum_{n=1}^{60}{1}=1+1+1+\dots+1=60

So, the sum can be written as ...

  \displaystyle\sum_{n=1}^{60}{(2n-1)^2}\\\\=\boxed{4\sum_{n=1}^{60}{n^2}-4\sum_{n=1}^{60}{n}+\sum_{n=1}^{60}{1}}\\\\=\boxed{4\sum_{n=1}^{60}{n^2}-4\sum_{n=1}^{60}{n}+60}

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It appears that the key to choosing the correct answers is paying attention to signs.

7 0
3 years ago
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An appliance store is having a liquidation where everything in the store is 70% off the regular price. What is the price of a di
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Answer is: .......      ..  . . . . . . . . . . . . ... C
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Credit sales are collected as follows:65 percent in the month of the sale.25 percent in the month after the sale.10 percent in t
Vitek1552 [10]

Answer:

Step-by-step explanation:

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= ($121,100 - $87,300) / 0.20

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b) December sales = Uncollected sales from December / Collection rate of the previous month sales,

Therefore: December sales = $87,300 / 0.45 = $194,000

December sales = $194,000.00

c) Each month's collection for the company are:

Collections for ech month = 0.20(Sales from 2 months ago) + 0.25(Last month's sales) + 0.55 (Current sales)

January collections = 0.20($169000.00) + 0.25($194,000.00) + 0.55($132,000)

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February collections = 0.20($194,000.00) + 0.25($132,000) + 0.55($149,000)

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4 0
4 years ago
Solve for x . Round to the nearest tenth, if necessary.
Jet001 [13]

Answer:

x = 24.1

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

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7 0
3 years ago
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Oli has a volume of 9000cm3 and a density of 0.8g/cm3
gogolik [260]
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