Write a system of equations to describe the situation below, solve using elimination, and fill in the blanks.
1 answer:
Answer:
Step-by-step explanation:
x = small barrettes
y = large barrettes
13x + 11y = 142.......multiply by -1
13x + 12y = 149
-----------------------
-13x - 11y = -142 (result of multiplying by -1)
13x + 12y = 149
------------------------add
y = 7..........large barrettes used 7 yards
13x + 11y = 142
13x + 11(7) = 142
13x + 77 = 142
13x = 142 - 77
13x = 65
x = 65/13
x = 5........small barrettes used 5 yards
You might be interested in
Answer:
Circle
Solve for circumference
C≈26.39cm
A Area
55.44
cm²
Answer:
y = 5x - 4
Step-by-step explanation:
Step 1: Write known variables
m = 5
y = 5x + b
Step 2: Find <em>b</em>
6 = 5(2) + b
6 = 10 + b
b = -4
Step 3: Rewrite equation
y = 5x - 4
Answer:
The fraction is 7/10 and the decimal is 0.7
Step-by-step explanation:
Each incriment represents 1/10, or 0.1.
We set up a proportion: 63/?= 28/100
Cross multiply: 28*?= 63*100
⇒ ?= 63*100/28= 225
28% of 225 is 63.
