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zheka24 [161]
3 years ago
13

Question 12 I mark as brainliest ​

Mathematics
1 answer:
Flauer [41]3 years ago
6 0

Answer: i think it’s A and D

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Please help me please
Murljashka [212]

Answer:

its no big deal

Step-by-step explanation:

no big deal.

5 0
3 years ago
In the air, it had an average speed of 16 1616 m/s m/sstart text, m, slash, s, end text. In the water, it had an average speed o
Diano4ka-milaya [45]

Answer:

t_a = 7 s

t_w = 5 s

Step-by-step explanation:

Given:

- The average speed in air v_a = 16 m/s

- The average speed in water v_w = 3 m/s

- The total distance D = 127 m

- The total time T = 12 s

Find:

How long did the stone fall in air and how long did it fall in the water?

Solution:

- Lets time taken by stone to drop through air as t_a = t_a.

- The time taken in water would be t_w = (12 - t_a)

- The total distance covered can be calculated as:

                            D = v_a*t_a+ v_w*(12 - t_a)

                            127 = 16*t_a + 3*(12 - t_a)

Simplify and solve for t:

                            91 = 16*t_a - 3t_a

                            13*t_a = 91

                            t_a = 7 s

                            t_w = 5 s

                           

8 0
3 years ago
What do you think it means when the change is positive? Negative? in a mathematical way​
SashulF [63]

Answer:

A number is positive if it is greater than or equal to zero. A number is negative if it is less than or equal to zero.

8 0
2 years ago
Read 2 more answers
Jon has y stickers. He uses 20 stickers and divided the remainder equally between his two sisters. find the number of stickers e
ale4655 [162]
Jon has y stickers and uses 20
jon=y-20
the sisters share y-20 between 2 of them
therefore each sister receives

(y-20) divided by 2 -- (y-20)/2

6 0
3 years ago
the manner estimates the daily employee bonus fund b in dollars from the number of visitors v using this equation b=100 + 0.5v r
velikii [3]

Answer:

ok dude I will study this

Step-by-step explanation:

then I will answer in a few minutes

4 0
3 years ago
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