Answer:
(3x + 4)(9x² - 12x + 16
Step-by-step explanation:
27x³ + 64 ← is a sum of cubes and factors in general as
a³ + b³ = (a + b)(a² - ab + b²), thus
27x³ + 64
= (3x)³ + 4³
= (3x + 4)(9x² - 12x + 16)
Answer:
minimum cost is 70 cents when Greg buys 3 pill type 1, and 2 pills type 2.
Step-by-step explanation:
Answer:5x-29•4+1/3x
Now put x value
5 (-11/5)-29.4+1/3 (-11/5)
-11-29.4+1/(-33/5)
-202/5+1/(-33/5)
-6691/165
Step-by-step explanation:
Answer:
Step-by-step explanation:
given that we are interested in finding out the proportion of adults in the United State who cannot cover a $400 unexpected expense without borrowing money or going into debt.
Sample size = 765
Favour = 322
a) The population is the adults in the United State who cannot cover a $400 unexpected expense without borrowing money or going into debt
b) The parameter being estimated is the population proportion P of adults in the United State who cannot cover a $400 unexpected expense without borrowing money or going into debt.
c) point estimate for proportion = sample proporiton =
d) We can use test statistic here as for proportions we have population std deviation known.
d) Std error = 0.01785(
Test statistic Z = p difference / std error
f) when estimated p is 0.50 we get Z = -4.43
g) Is true population value was 40% then
Z = 1.17 (because proportion difference changes here)