so I think the answer is very difficult ask to someone else
Step-by-step explanation:
xy=4
2x-y+2=0
Answer:
b. you sold 17
c. your friend sold 25
Step-by-step explanation:
you=y your friend=x
y=x-8
42=x +y
42=x+(x-8)
42=x+x-8
42=2x-8
50=2x
25=x
Use x to solve for y...
y=25-8
y=17
Answer:
3 feet, 4 inches
Step-by-step explanation:
Since AB=Bc, triangle ABC is isosceles with base AC. Then BN is height and median drawn to the base. If BN is median and AC=12 cm, then AN=NC=6 cm.
1. By the Pythagorean theorem for triangle ABN,

2. AB and BC are legs of isosceles triangle ABC. The heights drawn to the lags of isosceles triangle are congruent, so AK=CM. Consider two right triangles AKC and AKB. By the Pythagorean theorem,

Subtract from the second equation the first one:

Then

Answer: AK=CM=9.6 cm, BN=8 cm