Answer:
(B) (7x - 6 ) ( 7x + 6)
Step-by-step explanation:
49x^2 - 36
This is the difference of squares
(7x)^2 - 6^2
We can factor this as
(a^2 -b^2) =(a-b) (a+b)
(7x)^2 - 6^2 = (7x-6) (7x+6)
Answer:
C / (2pi) = r; r= 13.9 cm
2A/b = h ; h= 5
Step-by-step explanation:
The formula for the circumference of a circle is C = 2* pi * r.
Solving for r, we need to divide by 2 * pi on each side
C/(2* pi) = 2*pi*r/ (2* pi)
C / (2pi) = r
If the circumference is 87, we can find r by substituting into the equation.
87 / (2 * 3.14) = r
87/ 6.28 = r
13.85350318=r
Rounding to the nearest tenth
r= 13.9 cm
The formula for the area of a triangle is A = bℎ /2
To solve the formula for h, we need to multiply each side by 2
2*A = bh
Then divide each side by b
2A/b = bh/b
2A/b = h
If the area of a triangle is 25 and the base of 10 , we can substitute in to find the height.
2* 25 /10 = h
50/10 = h
5 =h
For number 5 - .3 ( 3.60 ÷ 12 = .3)
For number 6 - .32 ( 2.56 ÷ 8 = .32)
For number 7 - 2 ( 2.36 ÷ 2 = 1.18)
Answer:201 in squared
Step-by-step explanation:
a right circular cone has
a diameter d=8+in ...........r=4+in
a height of h=12+in
the volume
the vomue 1/3 times pie times r squared times height
the vlolume 1/3 times pie times 4 in squared times 12in
the vlolume 1/3 times pie times 16 in squared times 12 in
the vlolume 192 times pie inches squared over 3
the vlolume 200.96 in squared
whcih should equal 201 inches squared.
6 tons= 12,000 lbs.
I hope this helps!
