6x-2=5x+29
6x-5x-2=29
x-2=29
x=31
A system of equations is:
B )
x + y = 375
x = 2 y - 60
We will solve this system:
2 y - 60 + y = 375
3 y = 435
y = 435 : 3
y = 145
x = 375 - 145
x = 230
Allan`s score was 230 and Dave`s score was 145.
The pH value of a solution is a logarithmic function of the hydronium ion concentration in the solution. Since we are given the pH foe both we can easily calculate the H+ ion concentration as follows:
Aeen
3.3 = -log (H+)
H+ = 0.04 M
Marien
2.7 = - log (H+)
(H+) = 0.07 M
Therefore, Aeen's drink is 0.07/0.04 or 2 times more hydrogen ion concentration than Marien's drink.
Answer: Both the means and the standard deviations of Dwayne’s and Alisha’s graphs must be the same.
Step-by-step explanation:
Answer:
1
Step-by-step explanation:
it's really hard to understand the options that are given but 7/8 is only 1/8 away from 1. So I would choose 1. 0 is wrong. 1/2 is wrong. I dont know what the options 7 and 8 are doing there but I would go with 1
