Answer:
y=55
Step-by-step explanation:
First take note a triangle is always equal to a total of 180 degrees
now setup the equation.
y+40+y+30=180
rid of alike terms
70+2y=180
Now subtract 70 from both sides
2y=110
Now divide both sides by 2
y=55
Let N be no. of nickles. Then N($.05)+3N($.10)+2N($.25)=$3.40.
Or
4 nickels = $0.20
12 dimes = $1.20
8 Quarters = $2.00
Total = $3.40
Answer: $ 38.69 ; There are 12 people in the crew
<span>Y = 2x + 4
16x + 4y = 40
substitute </span>Y = 2x + 4 into <span>16x + 4y = 40
</span><span>16x + 4y = 40
</span>16x + 4(2x + 4) = 40
16x + 8x + 16 = 40
24x = 40 - 16
24x = 24
x = 1
Y = 2x + 4
Y = 2(1) + 4
Y = 6
answer (1, 6)
