Answer:
Step-by-step explanation:
p² + 14p + 49 = p² + 2 * 7p + 7²
Comparing with a² + 2ab + b²,
a= p and b = 7
So 2ab = 2*p*7 = 14 p
So, p² + 14p + 49 is a perfect trinomial
Answer:
Danielle is 7 and her counselor is 21
Step-by-step explanation:
Let x be the age of Danielle and y be the age of her counselor then:
y=3x
x+y=28
We can solve this using substitution. In this case, substitute 3x for y since y=3x...
x+3x=28
4x=28
Divide both sides by 4 (division property of equality)
x=7
y=3x=3(7)=21
Danielle is 7 and her counselor is 21
Answer:
The height of the cylinder is h≈2.55cm
Answer:
1,-2
1,1
2,-1
these ate after multiplying all the vertices by 1/5