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MA_775_DIABLO [31]
4 years ago
7

This is a GCSE maths question which i don’t understand.

Mathematics
1 answer:
Tpy6a [65]4 years ago
7 0

Answer:

15

Step-by-step explanation:

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Give an example of where you would use either the Commutative or Associative Property of Addition in a real world situation.
umka2103 [35]

So the best I could come up with is paper-rock-scissors; the operation takes two inputs and puts out the winner (assuming they are different).

So (paper rock) scissors= paper scissors = scissors,

But paper (rock scissors)= paper rock = paper.

This is a good example because it shows that associativity matters even outside of math.

3 0
3 years ago
What is the answer to (7*x+9)*x+90
Kaylis [27]

Answer:

<h2>7x² + 9x + 90</h2>

Step-by-step explanation:

(7x + 9)x + 90               <em>use the distributive property </em><em>a(b + c) = ab + ac</em>

= (7x)(x) + (9)(x) + 90

=7x² + 9x + 90

5 0
4 years ago
A figure is dilated by a scale factor of 3. If the origin is the center of dilation, what is the image of a vertex located at (3
Elenna [48]

Answer:

a

Step-by-step explanation:

5 0
3 years ago
.The sum of the angles of a polygon is 900⁰ .How many sides does it have​
DanielleElmas [232]

Answer:

heptagon

Step-by-step explanation:

5 0
3 years ago
A number, X, rounded to 1 decimal place is 3,7<br> Write down the error interval for x,
sp2606 [1]

Answer:

The error interval for x is:

                 [3.65,3.74]

Step-by-step explanation:

The number after rounding off is obtained as:

                         3.7

We know that any of the number below on rounding off the number to the first decimal place will result in 3.7:

  3.65     3.66    3.67    3.68    3.69    3.70    3.71   3.72    3.73    3.74

( Because if we have to round off a number present in decimals to n place then if  there is a  number greater than or equal to 5 at n+1 place then it will result to the one higher digit  at nth place on rounding off and won't change the digit if it less than 5 )

        Hence, the error interval is:

            [3.65,3.74]

6 0
3 years ago
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