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labwork [276]
3 years ago
11

An eighth-grade student claims she can prove that subtraction of integers is commutative. She points out that if a and b are int

egers, then
a - b = a + (-b)
Mathematics
1 answer:
irina [24]3 years ago
7 0
That is right. Just like a * b = b * a
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2 radical 24. how do you do that.​
anzhelika [568]

Answer:

4 radical 6 is the answer

Step-by-step explanation:

7 0
3 years ago
Find the value of the expression 0.01y^4 if y=3
stiks02 [169]

Answer:

0.81

Step-by-step explanation:

0.01 \times  {3}^{4}  = 0.01 \times 81 = 0.81

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3 years ago
If y=0.9 when x=2.4, find y when x=6.4​
Jet001 [13]

Answer:

2.4

Step-by-step explanation:

You have to divide 6.4 by 2.4 to get 2.66666666667.

Then you multiply 2.66666666667 and 0.9 to get 2.4

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Hope this helps!

5 0
2 years ago
Read 2 more answers
Suppose AXB and BXC are complementary and congruent. What are their measures?
11Alexandr11 [23.1K]
If two angles are complementary, it means that they add up to 90 degrees.
It two angles are congruent, it means that they have the same angle measure.

Let the angle measure of AXB = x
and the angle measure of BXC = y

Because the two angles are complementary i.e. they add to 90:
x + y = 90
Because the two angles are congruent i.e. they equal each other:
x = y
Plug x = y back into the first equation.
x + x = 90
x = 45
y = 45
Angles AXB and BXC are both 45 degrees.
8 0
3 years ago
What is -1 2/5 times 1 1/7
ahrayia [7]

Answer: -8/5

Step-by-step explanation:

I know this because -1 2/5 is -7/5 and 1 1/7 is 8/7. Multiply the numerator and denominator together and you get the answer

3 0
3 years ago
Read 2 more answers
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