Answer:
13) 25 and 17
14) cupcakes = $5
brownies = $3
Step-by-step explanation:
13) you can set this up as equations
so x + y = 42
x-y = 8
solve simultaneously by subtracting from each other
2y = 34
y= 17
if y = 17
42 - 17 = 25 = x
14) set up as equations again
Ben 7c + 10b = 65
franklin 7c +7b = 56
subtract from eachother
3b = 9
b = $3
7c + 10(3) = 65
7c = 35
c = $5
Answer:
2
Step-by-step explanation:
squared means a number times a number so therefore there is 2. cubed means a number times a number times a number so the exponent is 3.
Answer:
for the trapezoid it is 336
Step-by-step explanation:
She bought 2 books and 6 magazines.
Step-by-step explanation:
Given,
Price of a book = $ 5
Price of a magazine = $ 4.50
Total amount of book Luca bought = $ 37
Total number of books she bought = 8
To find the number of books and magazine she bought.
Let, she bought x number of books ans y number of magazines.
According to the problem,
x+y = 8 -----eq 1
5x+4.50y = 37 ------ eq 2
or, 10x+9y = 74 [ multyplying eq 2 by 2]
Putting x = 8-y from eq 1 into eq 2 we get,
10(8-y)+9y = 74
or, 80-10y+9y = 74
or, -y = 74-80
or, -y = -6
or, y = 6
From eq 1 we get,
x = 8-6 = 2
Hence,
She bought 2 books and 6 magazines.
