4 years ago

Add fractions 4 5/6 + 3/4 + 1/9

Mathematics

1 answer:

CaHeK987 [17]4 years ago

7 0

They total to 5 25/36.

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3x + 4y = 8<br> Is it linear? If so how do I graph it

VikaD [51]

Yes it is linear
It is a negative slope
I am attaching pic of graph
The slope is -3/4
Y intercept is (0,2)

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2 years ago

helpp Jon waits on tables and is paid $5.00 an hour. In a 40-hour period, he earned $210.50 in tips. What were his total earning

Nataly [62]

Add together the income from straight pay and that from tips:

($5/hr)(40 hrs) + $210.50

$200 + $210.50 = $410.50.

Jon's total earnings for the week were $410.50.

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4 years ago

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 ...

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

_____

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

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3 years ago

Read 2 more answers

I NEED HELP ASAP IT IS DUE IN 5 minutes <br> 3/4 times x + 7 = -5

yawa3891 [41]

Answer:

-16

Step-by-step explanation:

(3/4)x+7=-5

(3/4)x=-12

x=-12(4/3)

x=-16

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3 years ago

in a single elimination tournament starting with 128 teams, half of the remaining teams are eliminated in each round. a) make a

r-ruslan [8.4K]

The answer is 4 teams
Hope it helps ;)

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3 years ago