We know that the mixture has 14 mm of ink. Of these, 35% are blue pigment, hence the mixture contains 4.9 mm of blue ink. Ink A contains 10%*4mm=0.4mm of blue ink. The difference, 4.5 mm of blue ink must have come from ink B. Thus ink B contains 4.5 mm of blue ink and is in total 10mm. After that, we can calculate the percentage; we divide 4.5/10=0.45 and this is the ratio of blue ink to total ink (in Ink B). If we transform it to percentages it is 45%
Answer:
Step-by-step explanation:
the first one is correct
Answer:
x = 3, y = 5
Step-by-step explanation:
Substitute 3x-4 for y, giving you -2x+5(3x-4)=19
Simplify both sides of the equation for 13x-20=19
Add 20 to both sides for 13x=39
x = 3
Substitute x into 3x-4
3(3)-4
9-4
y = 5
The answer is D because they have similar y properties
a.)0.4 is the multiplier
b.)$32 after 1 year, $2.048(or $2.05) after 4 years
c.)V(t) = 80(0.4)t
d.)10 years because it will be below 2 cents
e.) [The graph isn't hard, you just have to plug in the numbers into y=80(0.4)^x]