Answer:
(a) 9
Step-by-step explanation:

substitute r = 4, t = 2

simplify

cubic of 2 is 8

simplify

Answer:

Step-by-step explanation:
- The product of 5 and the cube of x

- the difference of 6 and x^3

I understand as increase as sum so

We see that the total legnth is 9 and 5/8 inches
each piece is 1 and 3/8 inches long
there are 7 pieces
a board that is 9 and 5/8 inches total legnth is cut into pieces that measure 1 and 3/8 inches is cut into 7 pices
not A, should be cut into 7 pices, not 9 and 5/8
not B because the board is 9 and 5/8 long
the answer is C
Answer:
y=2x+2
Step-by-step explanation:
X² + y² = 25
y = 2 x - 5
---------------
x² + ( 2 x - 5 )² = 25
x² + 4 x² - 20 x + 25 = 25
5 x² - 20 x = 25 - 25
5 x ( x - 4 ) = 0
x 1 = 0 and x 2 = 4
Answer: B ) 4 and 0