2 years ago

Greg spent $47.45 on five books. If each book cost the same amount, how much does one book cost?

Mathematics

2 answers:

adell [148]2 years ago

4 0

Answer: $9.49

Step-by-step explanation:

If he spent 47.45 on five books you’re going to divide 47.45 by 5 which will give you 9.49

kvv77 [185]2 years ago

3 0

Answer:

Greg spent 9.49 cents on the book

You might be interested in

Can someone’s please help me? (Ignore the work)

Zinaida [17]

Answer:

a^14b^12

Step-by-step explanation:

okay so lets distribute the 2

so you get -a^6b^10 and a^8b^2

add

7 0

3 years ago

2x² - 5x+1 has roots alpha and beta. Find alpha⁴+beta⁴ without solving the equation.

shepuryov [24]

Answer:

Step-by-step explanation:

$\alpha+\beta=\dfrac{5}{2} \\\\\alpha*\beta=\dfrac{1}{2} \\\\\alpha^2+\beta^2=\dfrac{21}{4} \ (see\ previous\ post)\\\\(\alpha+\beta)^4=\dfrac{625}{16} \\\\=\alpha^4+\beta^4+4*\alpha^3*\beta+6*\alpha^2*\beta^2+4*\alpha*\beta^3\\\\=\alpha^4+\beta^4+4*(\alpha*\beta)(\alpha^2+\beta^2)+6*\alpha^2*\beta^2\\\\\alpha^4+\beta^4=(\alpha+\beta)^4-4*(\alpha*\beta)(\alpha^2+\beta^2)-6*\alpha^2*\beta^2\\\\= \dfrac{625}{16} -4*\dfrac{1}{2} *\dfrac{21}{4} -6*(\dfrac{1}{2})^2 \\\\$