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Bingel [31]
2 years ago
15

Can someone please help me out with these three questions please please please!!!!

Mathematics
1 answer:
krek1111 [17]2 years ago
8 0

Answer: 4. A 5. C 6. D

Step-by-step explanation: that’s it!!!!!!!!!!

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A bag has 9 marbles: 4 are green, 2 are red, and 3 are blue. Melissa chooses a marble at random, and without putting it back, ch
nika2105 [10]

Answer: pr (blue) = 1/3 or 0.33

Pr(green without replacement) = 1/2 = 0.5

Step-by-step explanation:

Probability = number of possible outcomes/ number of total outcomes

Total number of outcomes is the sum of all the marbles, given as 9

Pr ( first marble blue) = no of blue marbles/ total number of marbles

= 3/9 = 1/3 or 0.333

Second marble is chosen without replacement- this means that the total outcome has reduced by 1, total number of marbles has reduced to 8 because there was no replacement.

Pr (second marble is green) = number of green marble/ total number of marbles without replacing the first marble

= 4/8 = 1/2 = 0.5

I hope this helps.

7 0
3 years ago
The pH of stomach acid is 2.7. Which of the following is the closest to the hydrogen concentration?
Dmitrij [34]

Answer:

0.002M

Step-by-step explanation:

2.7= -log(H^+)

-2.7=log(H^+)

10^-2.7 M=H^+

0.0002M=H^+

3 0
3 years ago
Please help me find the value of each variable in the parallelogram
seropon [69]

Answer:

K=10 H=65

Step-by-step explanation:

To work out K, you need to know that opposite angles are the same, so 5k is the same as 50, 50÷5= 10, so k=10

To work out H, you know that opposite angles are the same so 2h is the same as 130, 130÷2=65 so h=65

4 0
3 years ago
600% of what number is 5,580
tiny-mole [99]

Answer:

930

Step-by-step explanation:

600% of x = 5580

6x = 5580

x = 5580/6

x = 930

7 0
2 years ago
Please answer! will give brainliest!!!
GalinKa [24]

Answer:

The answer is the last one

4 0
3 years ago
Read 2 more answers
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