3 years ago

Subtract 2x2 + 6x – 5 from 7x2 + 3x + 4.

Mathematics

1 answer:

alexdok [17]3 years ago

4 0

Here’s ur answer:)))

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Evaluate 3C1.<br><br> a)3<br> b)1<br> c)2<br> d)6

murzikaleks [220]

Answer: Option a) 3

Step-by-step explanation:

The formula for calculating combinations is as follows

$nCr = \frac{n!}{r!(n-r)!}$

Where "n" is the amount of items in a set and you can choose "r" from them

3C1 reads as: The combination of 1 in 3. You have a set of 3 elements and choose 1 of them.

$n = 3\\\\r = 1$

So :

$3C1=\frac{3!}{1!(3-1)!}\\\\3C1=\frac{3!}{1!*2!}\\\\3C1=\frac{3*2*1}{1*2*1}\\\\3C1=3$

5 0

3 years ago

Mrs. Hoffnagle's class is practicing skip counting by 30's . The first student said 30, the second said 60, and the third said 9

nadezda [96]

Answer:

120

Step-by-step explanation:

It’s like counting by 3’s and adding a 0

3,6,9,12

30,60,90,120

3 0

3 years ago

Is the data set 3,3,3,4,4,5,25 skewed right skewed left or normally distributed?

OverLord2011 [107]

It is skewed to the right because 25 is the outlier.

3 0

4 years ago

A box office sold reserved seat tickets for $10

Anastasy [175]

Please elaborate on the question so that I may help you.

8 0

3 years ago

If a concrete column is 6 inches by 6 inches square and 8 ft. long, calculate its weight in Newtons, given a specific weight of

tangare [24]

<h2>Weight of column is 555.83 N</h2>

Step-by-step explanation:

Size of column = 6 inch x 6 inch x 8 ft

Size of column = 0.5 ft x 0.5 ft x 8 ft

Volume of column = 0.5 x 0.5 x 8 = 2 ft³

Specific weight of concrete = 62.4 lb/ft³

Mass = Volume x Specific weight

Mass = 2 x 62.4

Mass = 124.8 lb = 124.8 x 0.454 = 56.66 kg

Weight = 56.66 x 9.81 = 555.83 N

Weight of column is 555.83 N

7 0

3 years ago