Step-by-step explanation:
3x - 4(4) = 65
3x - 16 = 65
3x = 81
x = 27
Answer:
1. 3x+4y=30
2. 30x+40y=300
3. x+4/3y=10
Step-by-step explanation:
1. x is the number of feet, y is the number of inches
2. substitute means to replace a variable with a number
3. y = 12 (5) = 60 inches.
Answer:
16 in total.
Step-by-step explanation:
40 and 32 both share the common denominator 8, so 40/8 =5 and 32/8=4
Isosceles right triangle hypotenuse = leg * sq root (2)
Isosceles right triangle hypotenuse = 7*sq rt(3) *
<span>
<span>
<span>
1.4142135624
</span>
</span>
</span>
hypotenuse =
<span>
<span>
<span>
12.124355653
</span>
</span>
</span>
*
<span>
<span>
1.4142135624
</span>
</span>hypotenuse =
<span>
<span>
<span>
17.1464281995
</span>
</span>
</span>
= 17.1 (rounded)
Source:
http://www.1728.org/trig2.htm