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2 years ago

When do we use parentheses in negative numbers?

Mathematics

1 answer:

Mekhanik [1.2K]2 years ago

7 0

Answer:

ok here are the rules for negitive numbers

positive+positive=positive

postive+negitive=negitive(or negitive+postive=negitive)

negitive+negitive=negitive

i thing you are slightly confused so i'll do some examples of problems with negitive number

5+-5=5-5=0

-5+5=5-5=0

Hope This Helps!!!

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Javier volunteers in community events each month. He does not do more than five events in a month. He attends exactly five event

mezya [45]

Answer:

The probability of Javier volunteers for less than three a month is 25%

Step-by-step explanation:

According to the questions,

The probability of Javier to attend exactly 5 events :-

P ( x = 5 ) = 25% = $\frac{1}{4}$

The probability of Javier to attend exactly 4 events :-

P ( x = 4 ) = $\frac{1}{4}$

The probability of Javier to attend exactly 3 events :-

P ( x = 3 ) = $\frac{1}{4}$

The probability of Javier to attend exactly 2 events :-

P ( x = 2 ) = $\frac{3}{20}$

The probability of Javier to attend exactly 1 events :-

P ( x = 1 ) = $\frac{1}{20}$

The probability of Javier to attend no events :-

P ( x = 0 ) = $\frac{1}{20}$

Now we have to calculate the probability of Javier volunteers for less than three P ( x < 3 ).

P ( x < 3 ) = P ( x = 0 ) + P ( x = 1 ) + P ( x = 2 )

P ( x < 3 ) = $\frac{1}{20} + \frac{1}{20} + \frac{3}{20}$ $= \frac{1 + 1 + 3}{20}$ = $\frac{5}{20}$ = $\frac{1}{4}$ = 0.25 = 25 %.

8 0

2 years ago

Pls help this homework is due tomorrow and I’m so confused thank you for taking your Time x

olchik [2.2K]

Answer:

a) x= 75

b) 105 is the same angle as angle B, I subtracted 180 by 105

180-105= 75

4 0

2 years ago

What is the point-slope form for the line passing through (3, -6) and (-1, 2)

Leto [7]

Answer:

y-2 = -2(x+1)

Step-by-step explanation:

Find the slope(m) first using the two points (3, -6) and (-1, 2).

Slope: -2

Next, plug in x₁ and y₁. I plugged in (-1, 2)

5 0

2 years ago

There are 6 red marbles, 9 blue marbles, and 10 green marbles in a bag.

Nat2105 [25]

Answer:

I think 64%

Step-by-step explanation:

6+9+10 = 25

25x4 = 100

6x4 = 24

10x4 = 40

24+40 = 64

64/100 = 64%

Sry if this is wrong but I think this should be correct

7 0

2 years ago

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Find the value of 9u-2 given that -7u-7=7 ?

Yuliya22 [10]

Answer:

-20

Step-by-step explanation:

when you solve: -7u-7=7, you get u= -2 and when you plug it in you get this equation 9(-2)-2=?

then you get -20

4 0

1 year ago

Read 2 more answers