3 years ago

An english reading list has 9 american novels and 7 english novels. A student must read 5 from the list and at least 3 must be e

nglish novels. In how many different ways can the five books be selected combination

1 answer:

7 0

$_7C_3\cdot {_{13}C_2}=\dfrac{7!}{3!4!}\cdot\dfrac{13!}{2!11!}=\dfrac{5\cdot6\cdot7}{2\cdot3}\cdot\dfrac{12\cdot13}{2}=2730$

You might be interested in

Dave Flip a coin 20 times and got heads on eight of the flips Based on Dave's results what is the experimental probability of th

Elodia [21]

Four tenths, .4 or 8/20

8 0

3 years ago

Why were the two fractions able to settle their difference peacefully

professor190 [17]

They were both rational

3 0

3 years ago

Read 2 more answers

112 oz= how many pounds are in 112 ounces

scoundrel [369]

7 pounds
Hope this helps!

6 0

3 years ago

Question 9 (7 points) Adam borrows $6000 for two years at an 8% annual interest rate, what is his monthly payment? A. $250 D. $5

Oksana_A [137]

Answer:

B. $271

Step-by-step explanation:

Given,

Present value of the loan, PV = $ 6000,

Annual rate of interest = 8 % = 0.08,

So, the monthly rate of interest, r = $\frac{0.08}{12}$ ,

Also, time = 2 years,

So, the total number of months, n = 24,

Hence, the monthly payment would be,

$A=\frac{PV(r)}{1-(1+r)^{-n}}$

$=\frac{6000(\frac{0.08}{12})}{1-(1+\frac{0.08}{12})^{-24}}$

$=\$271.363748737$

$\approx \$271$

Option B is correct.

6 0

3 years ago

I will give 10 paypal if answered correctly

Reika [66]

Answer:

1) x = 3

y = 42

2) x = 50

y = 70

Step-by-step explanation:

1) 12x + 6 = 14x

6 = 2x

x = 3

14(3) = y

42 = y

2) 2x + 10 + x + 20 = 180

3x + 30 =180

3x= 150

x=50

2(50)+10=110

110-180

y=70

4 0

3 years ago