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Marianna [84]
3 years ago
13

Which property is not used to simplify the following expression?

Mathematics
1 answer:
astraxan [27]3 years ago
4 0

Answer:

The last one of commutative property of addition since there is no swapping of numbers related with addition.  

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If edge of cube is reduced by 25%.find the percentage decrease in its total surface area.<br>​
vlada-n [284]
%75 I guess unless this is like highschool math
8 0
3 years ago
A school is organising a competition. There are 128 students from the Maths specialist class and 80 students from the English sp
Elden [556K]

Answer:

5 english students in each team

Step-by-step explanation:

So there are multiple ways to do this, you could do trial and error or you could factor out common numbers between the two.

Through trial and error, the lowest possible number of groups that could be divided between the number of students whilst still being able to maintain a whole # was 16 groups

  • 128 math students ÷16 groups = 8 math students/group
  • 80 english students ÷ 16 groups = 5 english students/group

The other way to solve this is to factor out common numbers between the two:

3 0
2 years ago
Pacturing Polynomials! GCH
grin007 [14]
Gross pay per days is 5h+8 dollars
Explanation:

we are given
total gross pay =35h+56 dollars
total number of days =7
we know that
gross pay per day = ( total gross pay)/(total number of days)
we can plug values
gross pay per day is

7 0
3 years ago
The coordinates of A on a grid are (-2,-4.Point A is reflexed across the y-axis to obtain.The coordinates of point B are?
Valentin [98]

Answer:

(2,-4)

Step-by-step explanation:

when reflecting across the Y-axis from quadrant 3 to quadrant 4, a sign change from (-,-) to (+,-) would occur.

3 0
3 years ago
At an ocean depth of 8 meters, a buoy bobs up and then down 5 meters from the ocean's depth. Sixteen seconds pass from the time
lisov135 [29]

Answer:

  See attached for a graph

Step-by-step explanation:

We're going to plot sea level as y=0 and a depth of 8 meters as y=-8.

The problem statement tells you the initial point (x=0) is at normal ocean depth (y=-8), so the first point you put into your sine tool is ...

  (x, y) = (0, -8)

The buoy takes 16 seconds to go from a high point to a low point, so the time to the first high point is half that, or x=8 seconds. That high point is 5 meters above its average depth, so is at y=-3.

The second point you will put into your sine tool is ...

  (x, y) = (8, -3)

7 0
3 years ago
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