Answer:
Solution Let E1 be the event that coin 1 is selected and E2 the event that coin 2 is selected. Let F be the event that exactly 7 of the 10 flips lands on heads, let G be the event that the fist flip is heads.
Answer: 33 gallons
Step-by-step explanation:
We initially have 130 gallons of a
acid solution and we need to change it to a
acid solution, and for that it is necessary to evaporate
gallons of water.
So, this situation can be mathemtically expressed as follows:

Then:

Isolating
:


Hence, we need to evaporate 33 gallons of water.
The answer is D
Type 1 Type 2 plants have somewhat similar height distributions
Both integers have negative values
Explanation
Let
x and y represents the number
so, the options are

a) Both integers have negative values Both integers

b) Both integers have positive values

c)One integer has a positive value, and one integer has a negative value

d)The values of the two integers are opposites
as the point C , the sign depends on the bigger number
for example

so, the answer is Both integers have negative values
I hope this helps you
I feel like it would be 5/12, but im not 100% sure