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____ [38]
2 years ago
8

If I am adding one positive number and one negative number, will the answer be positive or negative? What does it depend on?

Mathematics
1 answer:
maxonik [38]2 years ago
8 0

It depends on which number has the greatest absolute value.

Think about it as money

If you owe me $10, this is shown as -10

Now  if I give you back 2 dollars  (+2), How much money do I still owe you.

The equation is -10+2

I still owe you 8 dollars which is portrayed as -8

Hope this helps :)

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A random sample of size 100 was taken from a population. A 94% confidence interval to estimate the mean of the population was co
Firlakuza [10]

Answer:

Step-by-step explanation:

1) The z value was determined using a normal distribution table. From the normal distribution table, the corresponding z value for a 94% confidence interval is 1.88

The correct option is D

2) if 70% of all internet users experience e-mail fraud. It means that probability of success, p

p = 70/100 = 0.7

q = 1 - p = 1 - 0.7 = 0.3

n = number of selected users = 50

Mean, u = np = 50×0.7 = 35

Standard deviation, u = √npq = √50×0.7×0.3 = 3.24

x = number of internet users

The formula for normal distribution is expressed as

z = (x - u)/s

We want to determine the probability that no more than 25 were victims of e-mail fraud. It is expressed as

P(x lesser than or equal to 25)

The z value will be

z = (25- 35)/3.24 = - 10/3.24 = -3.09

Looking at the normal distribution table, the corresponding z score is 0.001

P(x lesser than or equal to 25) = 0.001

7 0
3 years ago
Candy bars are sold in a local store for 90 cents each. The factory has $1500 in fixed costs plus 10 cents of additional expense
pychu [463]

Answer:

Produce of 2000 candy bars is the break even point.

Step-by-step explanation:

4 0
2 years ago
F (x) = -x2 + 8x - 11<br> h(x) = -x-7<br> find f (9) + (-14)
bixtya [17]
Is there a answer choice of -5
5 0
2 years ago
What is -5x + 2 equals negative 48
VikaD [51]
The answer would be X=10
First you would subtract 2 to -48 and that gives you -50. After you will divide the -5x to -50 and that gives you X=10

3 0
3 years ago
Read 2 more answers
ASAP!!!!!!!!! PLEASE help me with this question! This is really urgent! No nonsense answers please.
Cloud [144]
<h3>Answer: C) increase from 45 degrees to 50 degrees</h3>

===============================================

Explanation:

Let's calculate the angle B based off the arcs CDF and GHJ

B = (far arc - near arc)/2

B = (arc CDF - arc GHJ)/2

B = (130 - 40)/2

B = 90/2

B = 45

----------

Now let's change GHJ to 30 degrees, while keeping the other arc the same.

B = (far arc - near arc)/2

B = (arc CDF - arc GHJ)/2

B = (130 - 30)/2

B = 100/2

B = 50

Angle B has increased from 45 degrees to 50 degrees.

7 0
3 years ago
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