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2 years ago

a bookstore sells 7 books for $99.75 which table represents the relationship between number of books and total price?

Mathematics

1 answer:

WARRIOR [948]2 years ago

7 0

Answer:

You did not provide the tables to choose from, but the relationship between number of books and total price is that each book is 14.25. Hope that helps at least.

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What is the solution of the matrix equation?

katrin [286]

Hello from MrBillDoesMath!

Answer:

The first choice ( -12, 20)

Discussion:

Using matrix multiplication we find the equations:

1x + 1y = 8 (A)

2x + 3y = 36 (B)

Next, compute

2(A) - B =>

(2x + 2y) - (2x + 3y) = 2*8 - 36 =>

(2x - 2x) + ( 2y-3y) = 16 - 36 =>

-y = -20 =>

y = 20

Substituting this y value in (A) gives

x + 20 = 8 =>

x = 8 - 20 =>

x = -12

The answer is the first choice ( -12, 20)

Thank you,

MrB

6 0

2 years ago

H. Salaries of Ravi and Sumit are in the ratio 2 : 3. If the salary of each is increased by Rs. 4000, the new ratio becomes 40 :

frutty [35]

Answer:

so here is the answer hope it helps

8 0

2 years ago

Four tires cost $398.00 how much do 7 tires cost ?

Schach [20]

398/4=99.50

99.5*7=$696.50

5 0

3 years ago

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(25 points) Can someone please solve this I just need to see how its solved to understand

aleksley [76]

x = total amount of students in 8th Grade.

we know only one-thrid of the class went, so (1/3)x or x/3 went.

we also know 5 coaches went too, and that the total amount of that is 41.

$\bf \stackrel{\textit{one third of all students}}{\cfrac{1}{3}x}+\stackrel{\textit{coaches}}{5}=\stackrel{\textit{total}}{41}\implies \cfrac{x}{3}+5=41\implies \cfrac{x}{3}=41-5 \\\\\\ \cfrac{x}{3}=36\implies x=3(36)\implies x=108$

now, to verify, well, what do you get for (108/3) + 5?

4 0

3 years ago

HELP ME PLZ SO VERY PLZ PLZ

yaroslaw [1]

The value of x will be 23

3 0

2 years ago

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