Write a Let" statement for the unknown, write an equation, and solve the equation. 11. Jane bought a number of records for $7 ea
ch. She then spent $3 more for a poster. If she spent a total of $24, how many records did she buy?
1 answer:
Let n = number of records.
Each record costs $7, so n records cost 7n.
She then spent $3, so the total spent is 3n + 3.
She spent a total of $24, so 3n + 3 must equal 24. That gives us the following equation.
7n + 3 = 24
Subtract 3 from both sides.
7n = 21
Divide both sides by 7.
n = 3
Answer: She bought 3 records.
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Question 10: 2/5 < 1/2
Question 11: 2/8 < 1/3
Answer:
the counting numbers and zero are whole numbers.
the counting numbers and their opposites, along with zero, are integers.
integers and decimal equivalents of fractions are rational numbers.
Answer:
a)$2800 , $0
b)$1600 , $0
c)$2800 , $0
d)$1650 , $0
e)$4400 , $0
f)$1020 , $0
g)$1405 , $0
h)$5400 , $0
Answer:
use pythag
half 5 = 2.5
half 12 = 6
6^2 + 2.5^2=42.25
42.25 sprout =13/2= 6.5
answer = 6.5
