A a dilation and reflection
dilation will make bigger or smaller therefore it cannot be congruent
Answer:
60 ml of 40% saline and 90 ml of 15% saline
Step-by-step explanation:
We can call the amount of 40% solution x and the amount of 15% solution y.
x + y = 150 -- (1)
0.40x + 0.15y = 150 * 0.25 -- (2) --- 150 * 0.25 = 37.5
40x + 15y = 3750 (Multiply (2) by 100 to get rid of decimals)
15x + 15y = 2250 -- (3) (Multiply (1) by 15)
25x = 1500 (Subtract (3) from (1)
x = 60
y = 150 - 60 = 90
Answer:
1 1/5 miles per hour
Step-by-step explanation:
<span>To find: Cost of backcover.
Solution:
Let the cost of backcover be x.
Then,
56 = 2x - 24
56+24 = 2x
80 = 2x
80 / 2 = x
x = 40
The cost of backpack is $40.</span>
