4 is missing I assume. But I could be wrong
Answer:
105 cc of 7% solution
245 cc of 17% solution
Step-by-step explanation:
If x = volume of 7% solution, and y = volume of 17% solution, then:
x + y = 350
0.07x + 0.17y = 0.14(350)
Solve with substitution:
0.07x + 0.17(350 − x) = 0.14(350)
0.07x + 59.5 − 0.17x = 49
10.5 = 0.10x
x = 105
y = 245
Part A: David wrote 0.003 + 0.0001 instead of <span>0.03 + 0.001
Part B: T</span>he 1 should be in the thousandths place
Hope this helps, make sure to count each place from right after the decimal which is the tenths place, then hundredths, etc.
The answer is D $126,if three cost $54 that means one costs $18 and just multiply it with seven
I think that you multiply 2 with 4 to get 8 and then multiply 8 with 7 to get that number then add 2.75... to get the total.
Hope it helped..
