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3 years ago

How do you divide a negative number and a positive number? My problem is -19÷13.

Mathematics

2 answers:

Margarita [4]3 years ago

8 0

Divide the numbers like you would divide two positive numbers using a calculator or long division. Then, when you divide two numbers, and one is positive, and one is negative, the result is negative.

19/13 = 1.46153846...

-19/13 = -1.46153846...

cestrela7 [59]3 years ago

4 0

When you divide a negative and a positive, you don't have to worry about the negative that much. Just divide like normal, and then add the negative at the end. However, if you divide a negative by a negative, it's double negative, and therefore positive. So in the case of -19 / 13, the answer would be negative.

Hope this helps! :)

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In a certain country, the true probability of a baby being a girl is 0.469. Among the next seven randomly selected births in th

-BARSIC- [3]

Answer:

The probability is 0.995 ( approx ).

Step-by-step explanation:

Let X represents the event of baby girl,

The probability of a baby being a girl is, p = 0.469,

So, the probability of a baby who is not a girl is, q = 1 - 0.469 = 0.531,

Also, the total number of experiment, n = 7

Thus, by the binomial distribution formula,

$P(x)=^nC_x(p)^x q^{n-x}$

Where, $^nC_x=\frac{n!}{x!(n-x)!}$

The probability that all babies are girl or there is no baby boy,

$P(X=7)=^7C_7(0.469)^7(0.531)^{7-7}$

$=0.00499125661758$

Hence, the probability that at least one of them is a boy = 1 - P(X=7)

= 1 - 0.00499125661758

= 0.995008743382

≈ 0.995

8 0

3 years ago

Bradley paid $33.53 for 7 gallons of milk. What is the price per milk gallon

katrin2010 [14]

Answer:

The Answer is 4.79

Step-by-step explanation:

All you have to do Divide 33.53 by 7 then you would get 4.79

I say divide because they want to know how much it one gallon of milk costs So that is why you have to divide

Hope I Helped! :3

3 0

3 years ago

Read 2 more answers

One printing press can print the whole school newspaper in 12 hours, while another press can print in 18 hours. How long will th

rusak2 [61]

Answer:

7 Hours 12 Minutes

Step-by-step explanation:

So they one of the printer increases at a rate of 1/12 and the other increases at a rate of 1/18. Since you don't know the time it actually takes, you will replace both numerators with and x. (x/12 and x/18). You want to set these up so that they are adding. (x/12 + x/18=1). Since you're adding, you want to change it to the same denominator. The lowest is 36 so you multiply x/12 by 3/3 (so you don't unbalance the equation) and x/18 by 2/2. You'll end up with 3x/36 + 2x/36= 1 which will simplify to 5x/36=1. Multiply each side by 36 to leave the variable by itself. It becomes 5x=36 and when you divide it by 5 you get 7.2. So it's seven and .2 hours, which is equivalent to7 and 1/5 of an hour or 7 hours and 12 minutes.

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2 years ago

Can someone please help me with this ?

natulia [17]

13. 1,6

18. -15,12

19. -7, 1/2

4 0

3 years ago

Evaluate the limit. lim x ? 5 (x-5)^2/x-5

slega [8]

As x approaches 5
hmm, we can divide the (x-5) from top and bottom to get x-5
if we input 5 for x we get
5-5=0
it approaches 0 as x approaches 5

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2 years ago