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Harlamova29_29 [7]
3 years ago
12

Remove the parentheses from the expression (–2) – (–3). A. 2 – 3 B. –2 + 3 C. 2 + 3 D. –2 – 3

Mathematics
1 answer:
lukranit [14]3 years ago
5 0

Answer:

B.

Step-by-step explanation:

The negative of a negative is a positive, so B is your choice.  Think of it anothe way, if it helps.  Imagine that the expression is this:

(-2) + (-1)(-3) since every subtraction problem can be rewritten as an addition problem.

We would first, by orders of operation, multiply the -1 and the -3 getting 3.  Then the problem would simplify down to -2 + 3

Just another idea to ponder...

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The drama clue is showing a video of their recent play. The first showing begins at 1:30 p.m. The second showing is scheduled at
OLga [1]
-----------------------------------------------
Given information
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First showing : 1.30pm
Second showing : 4.15 pm
Inbetween : 1/2 hour break

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Find the time the first showing ends
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1/2 hours before 4.15pm
⇒ 30 mins before 4.15pm
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Calculate the duration of the firs show
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1.30pm to 3.30pm = 2 hours
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7 0
4 years ago
Which value of x must be excluded from the domain of the function, y = 9 / 2(x + 7)?
svlad2 [7]
B) -7 because the dominator must be different by 0.

2(x + 7) ≠ 0    |divide both sides by 2

x + 7 ≠ 0    |subtract 7 from both sides

x ≠ -7
8 0
3 years ago
Drag each number to the correct location on the table. Not all numbers will be used.
Airida [17]

Answer:

Complete Table:

Result of Roll ------ Frequency ------- Experimental Probability

1 --------------------------- 22 ------------------- 0.176

2 --------------------------- 13 ------------------- 0.104

3 --------------------------- 18 ------------------- 0.144

4 --------------------------- 29 ------------------- 0.232

5 --------------------------- 37 ------------------- 0.296

6 --------------------------- 6 ------------------- 0.048

Step-by-step explanation:

Required: Complete the table

The table is divided into 3:

1. Result of Roll

2. Frequency (F)

3. Experimental Probability (P)

The relationship between (2) and (3) is:

P = \frac{F}{N}

Where

N = Number of Rolls

N = 125

For Roll of Result = 2

Frequency = 13

The probability is calculated as thus:

P = \frac{13}{125}

P = 0.104

For Roll of Result = 3

Probability = 0.144

The Frequency is calculated as thus:

0.144 = \frac{F}{125}

F = 0.144 * 125

F = 18

For Roll of Result = 4

Frequency = 29

The probability is calculated as thus:

P = \frac{29}{125}

P = 0.232

For Roll of Result = 5

Probability = 0.296

The Frequency is calculated as thus:

0.296 = \frac{F}{125}

F = 0.296* 125

F = 37

For Roll of Result = 6

Frequency = 6

The probability is calculated as thus:

P = \frac{6}{125}

P = 0.048

For Roll of Result = 1.

To get the frequency; we subtract the sum of frequencies of roll of results 2 to 6 from the total number of rolls.

In other words:

Frequency of 1 = Total Rolls - (Frequency of 2 + Frequency of 3 + Frequency of 4 + Frequency of 5 + Frequency of 6)

Frequency of 1 = 125 - (13 + 18 + 29 + 37 +6)

Frequency of 1 = 125 - 103

Frequency of 1 = 22

The probability is calculated as thus:

P = \frac{F}{N}

P = \frac{22}{125}

P = 0.176

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3 years ago
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borishaifa [10]

Answer:

70

-----

20

Step-by-step explanation:

mark me as brilliant

7 0
3 years ago
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