teresass
teresass
13-01-2018
Mathematics
contestada
how do you do this?
please help if possible!
Respuesta :
Catya
Catya
13-01-2018
(a) need to find the number of books, we'll call it "b". then the money (6w) minus the cost of books (17b) equals change left over (w)
6w - 17b = w
6w - w = 17b
5w = 17b
(5/17)w = b
(b) if w = 34
(5/17) *34 = b
10 = b
Answer Link
ray2me123
ray2me123
13-01-2018
a) Solution:
Angela bought some books for $17 each.
That means , she bought x books for $17x
Initially, she had $6w.Later she has $w left.
Writing this as a equation,
6w-17x=w
6w-w=17x
5w=17x
x=5w/17➡Ans 1
b) Solution:
If w=34,
↪x=5×34/17
=10➡Ans 2
So , she bought 10 books in this case.
Answer Link
VER TODAS LAS RESPUESTAS ( 55+ )
Otras preguntas
The average worker can never obtain more than a minimum standard of living each worker is deprived of the wealth he himself has created the state is simple a co
if a=1 fine the value of 2a
A moon rock is brought to Earth. How does its mass and weight on Earth compare with its mass an weight on the Moon?
Another sigma notation question. Please check. Hopefully I did this one correctly!
What is the solution set of [x1x<-5) n {x1x > 5)? all numbers less than -5 and greater than 5 the numbers between -5 and 5 the empty set all real numbers
Please help me with this question. This Venn diagram shows sports played by 10 students. Let event A = The student plays basketball. Let event B = The student p
It’s -3 degrees Celsius at sunset. The next morning at sunrise it was -7 degrees Celsius. Which expression gives the temperature change from sunset to sunrise?
A tradesman marks his goods at such a price that he can deduct 4% for cash and yet makes 20% profit what is the Marked price of an article which costs Rs 1400?
Evaluate the expression. |-1/3 (1^10+ 9 - 2^3|
Find the slope and y-intercept of Y=3x-4