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HACTEHA [7]
3 years ago
12

Which statement is true about the expression 12 minus 7 + 3? The expression is equivalent to 12 minus (7 + 3) because of the ass

ociative property. The expression is equivalent to 12 + 3 + (negative 7) because of the associative property. The expression is equivalent to 12 minus 3 + 7 because of the commutative property. The expression is equivalent to 12 + 3 + (negative 7) because of the commutative property.
Mathematics
2 answers:
asambeis [7]3 years ago
8 0

Answer:

The Expression is equivalent to 12+3+ negative 7

Step-by-step explanation:

When you sub tract something for example 5-3 the three can be looked at as a negative number. 5-3=2 but 5+ (-3)=2 as well

malfutka [58]3 years ago
7 0

Answer:

The last option

Step-by-step explanation:

12 - 7 + 3 (= 5 + 3 = 8).

This equals 12 + 3 + (- 7) (= 15 - 7 = 8 ) due to the commutative property.

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1. determine if the functions are inverse functions
kirill115 [55]

Answer:

<u>Question 1</u>

The function f(x) = x + 6 is one-to-one, so it does have an inverse.

The inverse of +6 is -6, so f^{-1}(x)=x-6

Therefore, g(x) is the inverse of f(x).

<u>Question 2</u>

The function f(x) = -3x -9 is one-to-one, so it does have an inverse.

To find the inverse, replace f(x) with y:

\implies y = -3x -9

Rearrange the equation to make x the subject:

\implies y+9= -3x

\implies x=-\dfrac13(y+9)

\implies x=-\dfrac13y-3

Replace x with f^{-1}(x) and y with x:

\implies f^{-1}(x)=-\dfrac13x-3

Therefore, g(x) is the inverse of f(x).

5 0
2 years ago
A researcher reports an F-ratio with df = 1, 24 for an independent-measures experiment. If all the treatments had the same numbe
Vsevolod [243]

Answer:

13 participants.

Step-by-step explanation:

Given that a researcher reports an F-ratio with df = 1, 24 for an independent-measures experiment.

i.e. degrees of treatment between groups =1

and within groups = 24

This implies that there are two groups.

For two groups to have same number of participants, since we get total of degrees of freedom =24+1 =25

Hence total items selected = 26

i.e. each group would have 13 entries

So each treatment had 13 participants.

7 0
3 years ago
Brighten is an expression that shows how to multiply 7 * 256 using expanded form and distributive property
charle [14.2K]

I am not familiar with "brighten" but this is how you can expand and use the distributive property:

 7(256)

= 7(200 + 50 + 6)

= 7(200) + 7(50) + 7(6)

= 1400 + 350 + 30

= 1780

4 0
3 years ago
What is the range of the relation {(2, 4), (3, 4), (4, 7), (5, 7), (6, 5)}?
Leto [7]
4,7,5 .................................................
6 0
3 years ago
Read 2 more answers
I need help no links or files brainly will remove them
Natalija [7]

Answer:

25 grams

Step-by-step explanation:

Three half live

1/2 * 1/2 * 1/2 = (1/2)³ = 1/8

There would be 1/8 of the original amount left

185 * 1/8 = 23.125

Rounded

25 grams

4 0
3 years ago
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