Answer:
a = 7
Step-by-step explanation:
Using Pythagoras' identity in the right triangle,
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
a² + b² = c² , substitute values
a² + 2.4² = 7.4², that is
a² + 5.76 = 54.76 ( subtract 5.76 from both sides )
a² = 49 ( take the square root of both sides )
a = = 7
Answer:
I think the answer is 13...
Step-by-step explanation:
f(3)=5*3-2
=13
Step-by-step explanation:
y2+4y+1=0. where, y=-2
(-2)2+4(-2)+1
-4-8+1=0
-12+1=0
-11=0
30%25=7.5
25-7.5=17.5
So the original price of Harry's three T-shirts will be $17.50