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kow [346]
3 years ago
15

Factorise:

2} -4x -1 " align="absmiddle" class="latex-formula">
Mathematics
1 answer:
yawa3891 [41]3 years ago
6 0

Unable to factor... no multiples of 1 can equal 4.

Sorry if this did not help.

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a traveler has 7 pieces of luggage . how many ways can the traveler select 3 pieces of luggage for a trip
7nadin3 [17]
Well, you could assign a letter to each piece of luggage like so...

A, B, C, D, E, F, G

What you could then do is set it against a table (a configuration table to be precise) with the same letters, and repeat the process again. If the order of these pieces of luggage also has to be taken into account, you'll end up with more configurations.

My answer and workings are below...

35 arrangements without order taken into consideration, because there are 35 ways in which to select 3 objects from the 7 objects.

210 arrangements (35 x 6) when order is taken into consideration.

*There are 6 ways to configure 3 letters.

Alternative way to solve the problem...

Produce Pascal's triangle. If you want to know how many ways in which you can choose 3 objects from 7, select (7 3) in Pascal's triangle which is equal to 35. Now, there are 6 ways in which to configure 3 objects if you are concerned about order.

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3 years ago
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Hey how are you, also can you please give me brainlest. I only need 2 more to level up.
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3 years ago
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An object has a weight of 6.4 N.
Kazeer [188]

Answer:

Step-by-step explanation:

We can do this quite simply by using Newton's equation: forcegravity = G × M × mseparation2 .

Suppose: your mass, m, is 60 kilogram; the mass of your colleague, M, is 70 kg; your centre-to-centre separation, r, is 1 m; and G is 6.67 × 10 -11 newton square metre kilogram-2.

8 0
3 years ago
Factor -25x - 5.<br> A. -5(5x+1)<br> B. -5(5x^2+1)<br> C. -5(5x^2+2)<br> D. -5x(25x+5)
VARVARA [1.3K]
Factor out common  term - 5 :

- 25 x - 5 = 

- 5 ( 5 x + 1 )

Answer A
5 0
3 years ago
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What is the perimeter of an area
Inessa [10]

Answer:

The perimeter is the length of the outline of a shape. To find the perimeter of a rectangle or square you have to add the lengths of all the four sides. x is in this case the length of the rectangle while y is the width of the rectangle. The area is measurement of the surface of a shape.

Step-by-step explanation:

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3 years ago
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