Answer:
Step-by-step explanation:
By using the Pythagorean theorem:
b^2+3^2=5^2
b^2+9=25
b=sqrt (25-9)
b=sqrt(16)
b=4
=> 4^2+7^2=c^2
16+49=c^2
65=c^2
=>c=sqrt(65)
c = (approximately) 8
Answer:
d. only the first equation is an identity
Step-by-step explanation:
Answer:
A po
Step-by-step explanation:
sana makatulong haaha
Answer:
40 grams
Step-by-step explanation:
y * 25% + x * 10% = 120 * 15%
x = 120 - y
(120-y) * 10% = x * 10%
y * 25% + (120 - y ) * 10% = 120 * 15%
0.25y + 12 - 0.1y = 18
0.15y = 6
y = 6 / 0.15
y = 40
