23) x^2 * 8
24) x^3 - 15
25) (x/4) + 5
26) 4 less than the product of 8 and a number is 16
27) The sum of a number and 3 divided by 4 is 5
28) 3 less than 4 times a number squared is 13
C = πd
C = 3.14 x 9
C = 25.12
x=-12 i got this answer because -14 is 8 more than -6 so i added 8 to -4 and i got -12
hope it helps
Answer:
D.63 leaves
Step-by-step explanation:
Divide the given number of leaves by the time it took that many to fall
190/3=63.33 which rounds down to 63
<u>Question #2</u>
21 Miles per gallon
Divide the number of gallons by the amount of gas to get miles per gallon.
252/12=21 miles per gallon
Do recall that squaring and the *radical sign* cancel each other out... like so:(
)
= a
When you put it that way, it isn't enough :P
(
)
= a
(
)
=?
so you start with
(
)
=
8x+1=25 <-- subtract 1 to both sides
8x=24 <- divide 8 to both sides
x= 3
To find out if it's an extraneous solution ask yourself: It mustn't result in a radical that I like to call... 'illegal'. Plug it into the radicand 8x+1 and make sure you get something that is not a negative number.... so, DO you get a negative number when you plug in x = 3 into the radicand?
(extraneous solution is a invalid solution)
x=3 not extraneous