First question: 2x = 50
Explanation:
“2 times as many” in this situation means that the pages justin read (50) is twice as Colin’s. Meaning that to find the number of pages Colin’s read, we will have to divide 50 by 2.
2x = 50 is an equivalent representation of that.

2nd question:
(Choose these correct statements):
• 9h represents how much money Sofia earns babysitting for h hours.
• Sofia babysat for 3 hours.
• If Sofia babysits for 5 hours, she will earn $45

Have a nice day (brainliest please)

6 0

3 years ago

The amount and the concentration of a salt solution is given. How much salt would you get if you evaporated all water from this

DiKsa [7]

Answer:

40.5 g

Step-by-step explanation:

Find how much salt is in 450 g of a 9% salt solution.

Note that

450 g - 100%,

x g - 9%,

then

$\dfrac{450}{x}=\dfrac{100}{9},\\ \\x=\dfrac{450\cdot 9}{100}=40.5\ g.$

If you evaporated all water from this solution, then you would get 40.5 g of salt.

6 0

3 years ago

Read 2 more answers

Five athlete are entered into a competition. Four of the athlete have had their turns. Their scores are 9.8 seconds, 9.75 second

Naddika [18.5K]

What is the fourth persons time and, with these numbers it should be anything lower than 9.75.

3 0

3 years ago