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Vika [28.1K]
4 years ago
7

What is a counterexample for "subtraction of whole numbers is commutative" ??

Mathematics
1 answer:
devlian [24]4 years ago
6 0
The commutatice property for addition says a+b=b+a
If it was for subtraction, then it would be a-b=b-a
Take a=7 and b=5
7-5 is not equal to 5-7
2 is not equal to -2
So subtraction is not commutative for whole numbers.

Hope this helps :)
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Craig’s June water bill listed two meter reading. The previous reading was 6,372 ccf and the present reading is 6501 CFC. How mu
romanna [79]

Answer: Craig's household use of water during the billing period = 129 CFC

Explanation:

Since we have given that

Craig's June water meter's previous reading =6372 CFC

Craig's water meter's present reading =6501 CFC

Craig's household use during the billing period =6501 -6372= 129 CFC

So, we get that

Craig's household use of water during the billing period = 129 CFC


8 0
3 years ago
-6(7m + 4) = -108 <br><br> Equations with distribution
enyata [817]

Answer:

m=2

Step-by-step explanation:

4 0
3 years ago
Can you please help me with 1-12? Thank you
Marysya12 [62]

Answer:

1. 18.84 in

2. 56.52 cm

Step-by-step explanation:

The circumference of a circle is the distance around the circle. Its found using the formula C = πd or C=2πr. The variable d represents the diameter or the distance from one edge of the circle to the other through the cent. The variable r represents the radius of a circle or the distance from one edge to the center. Use the formula by substituting a diameter or radius then simplify.

1. C = πd = π(6) = 3.14(6) = 18.84 in

2. C = 2πr = 2(3.14)(9) = 56.52 cm

6 0
4 years ago
ANSWER FAST PLZ 65 POINTS!!!!!!!!!!!!!!!!!!
Snezhnost [94]

Area of a circle is found using the formula: A = PI x r^2 where r is the radius of the circle, which is half the diameter.

Using the information in the problem you have:

A= PI x 15^2

A = PI x 225

A = 706.5 sq. In.

8 0
3 years ago
Read 2 more answers
The kicker on the football team made 8 out of 9 of his field goals. about what percent of field goals did the kicker miss
daser333 [38]

Answer:

11%

Step-by-step explanation:

if he made 8/9 attempts, that leaves 1/9 and 1/9 is .11 so its 11% that he missed

8 0
3 years ago
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