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mart [117]
4 years ago
13

What does sum mean in math?

Mathematics
2 answers:
kicyunya [14]4 years ago
6 0
It could be the amount, total amount or basically total. 
nirvana33 [79]4 years ago
5 0
The sum is the answer to an addition problem

Example : The sum of 4 and 2 : 4 + 2 = 8
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A box contains 4 red cubes, 3 blue cubes, 2 green cubes, and 1 yellow cube. You pick two cubes at random, replacing each after y
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Answer:

Step-by-step explanation:

There are 10 cubes all together.

You want blue and then red with replacement.

Blue

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The answer is A

4 0
3 years ago
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Question 13
Mrac [35]

Answer:

71.6 degrees

Step-by-step explanation:

Given the vectors

u= <8,4> v = <9.-9> (5 points)

u*v = (8, 4)*(9, -9)

u*v = 8(9)+(4)(-9)

u*v = 72 - 36

u*v = 36

|u| = √8²+4²

|u| = √64+16

|u| = √80

|v| = √9²+9²

|v|  = √81+81

|v|  = √162

Using the formula

u*v = ||u||v| cos theta

36 = √80(√162)cos theta

36 = √12960 cos theta

cos theta = 36/√12960

cos theta = 36/113.8

cos theta = 0.3162

theta = arccos(0.3162)

theta = 71.56 degrees

Hence the angle between the given vectors to the nearest tenth of a

degree is 71.6 degrees

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3 years ago
An area of 3.5m² is the same as 350000mm². True or false. Justify your answer
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5.A rectangle has a length of 20 centimeters and a width of 4 centimeters. What is the area of the rectangle?
yawa3891 [41]
A = LW
A = 20 * 4
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