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zvonat [6]
3 years ago
8

1)

Mathematics
1 answer:
pantera1 [17]3 years ago
3 0
True
-2x4=-8
20x2= 40
9x5=45
7
-8+40-45+7= 5
The answer would be 5, making the statement TRUE
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Please help thanks!!!!!!!!
Rufina [12.5K]
Less then jake
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4 0
3 years ago
While standing on a roof, you drop a hammer. The function y=16-16t^2
notka56 [123]
When y=0, t=1
so after 1 second the hammer land on the ground.
4 0
4 years ago
ur a HS photographer taking pictures fir 2 classes of 21 students each. on average, each individual pic takes 3 minutes and a cl
goblinko [34]
2 classes of 21 students each
21 × 2 classes = 42 students in total
42 × 3 mins = 126 minutes for 42 students
10 mins for 2 class pics = 20 minutes
126 + 20 = 146 minutes = 2 hours and 26 minutes

It should take 146 minutes (2 hours and 26 minutes) to take all the pictures.
6 0
3 years ago
Is there a commutative property of subtraction that states a-b=b-a? investigate and make a conclusion that you justify.
Rom4ik [11]

No is your answer

Assuming that b ≠ a, the answers will not be the same.

For example, (remembering that b ≠ a) let us assume that b = 10, a = 5

10 - 5 = 5

5 - 10 = -5

5 ≠ -5

So the commutative property of subtraction does not work unless in certain cases, in which a = b.

hope this helps

5 0
3 years ago
If x = -3, what is the value of (1 - x)^3? Explain why
Anna007 [38]
Hello,

To find the value of (1 - x)³ when x = -3, you just need to substitute x = -3 into the given expression. 

(1 - (-3)³
(1 + 3)³
4³
64

Your final answer is D, 64. Hopefully it helps! :D
5 0
4 years ago
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