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lisov135 [29]
3 years ago
8

What is i30? A. 1 B. -i C. -1 D. i

Mathematics
1 answer:
Doss [256]3 years ago
5 0
B

Jksshsianhshsjssjsj
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A construction company transported 8 stones that weighed a total of 70.22 kilograms. How much did each stone weigh?
pishuonlain [190]

Answer:

8.7kilos

Step-by-step explanation:

70.22 divided by 8

hope this helps!

5 0
1 year ago
Liter of water i drink 1/4 before lunch and 2/3 of the rest after lunch how much do I bring in-between
tresset_1 [31]

Answer:

We have (2/3)x(1-1/4) - 1/4 = (2/3)x(3/4) -1/4 = 6/12 = 1/4 = 1/2 -1/4 = 2/4 - 1/4 = 1/4 do I bring in between;

Step-by-step explanation:

8 0
3 years ago
What is the value of -2(x + 5)?
Nataly_w [17]

Answer:

5)

1

 

Expand by distributing terms.

-2x-2\times 5−2x−2×5

2

 

Simplify  2\times 52×5  to  1010.

-2x-10−2x−10

3 0
2 years ago
PLEASE HELP!!!! WILL GIVE BARAINLYIST!!!!
Klio2033 [76]

Experimental probability = 1/5

Theoretical probability = 1/4

note: 1/5 = 0.2 and 1/4 = 0.25

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

How I got those values:

We have 12 hearts out of 60 cards total in our simulation or experiment. So 12/60 = (12*1)/(12*5) = 1/5 is the experimental probability. In the simulation, 1 in 5 cards were a heart.

Theoretically it should be 1 in 4, or 1/4, since we have 13 hearts out of 52 total leading to 13/52 = (13*1)/(13*4) = 1/4. This makes sense because there are four suits and each suit is equally likely.

The experimental probability and theoretical probability values are not likely to line up perfectly. However they should be fairly close assuming that you're working with a fair standard deck. The more simulations you perform, the closer the experimental probability is likely to approach the theoretical one.

For example, let's say you flip a coin 20 times and get 8 heads. We see that 8/20 = 0.40 is close to 0.50 which is the theoretical probability of getting heads. If you flip that same coin 100 times and get 46 heads, then 46/100 = 0.46 is the experimental probability which is close to 0.50, and that probability is likely to get closer if you flipped it say 1000 times or 10000 times.

In short, the experimental probability is what you observe when you do the experiment (or simulation). So it's actually pulling the cards out and writing down your results. Contrast with a theoretical probability is where you guess beforehand what the result might be based on assumptions. One such assumption being each card is equally likely.

7 0
2 years ago
Pls help this is for math ill give a brainly​
olasank [31]

Answer: The last one - 5 1/3 divided by 1/6

Step-by-step explanation:

since you are trying to figure out how much she runs a day, u divide

Hope this helps :)

6 0
3 years ago
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