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Mumz [18]
3 years ago
14

Evaluate the expression when a = 3, b = 2, and c= -3: (a³ + 2bc)/( c² -5)

Mathematics
1 answer:
natta225 [31]3 years ago
4 0
((3*3*3)+2(-6))/((-3*-3)-5)
(27-12)/9-5
15/4
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Please help explanation if possible
Svet_ta [14]

Answer:

18.84 feet.  let me know if you have ay other questions.

Step-by-step explanation:

The way to find the formula for circumference is kinda complicated so it is best to ust memorize the formula, which is 2πr.  or 2 times pi times the radius.  

Your problem gives you the formula, but instead of 2 and r in it you have d, which is the diameter.

The diameter of the circle is 2 times the radius, so that's why it is replaced.

the radius is the distance from the center fo the circle to one edge, and the diameter is the distance through the circle passing through its center.  so it's the center to one end plus the center to another end.  or r+r which is also 2r.

So d = 2r, so in this problem d =6 feet.

So now the formula πd = 3.14*6 feet = 18.84 feet

7 0
3 years ago
HELP ME PLEASE !!<br> Determine whether the relation is a function. Explain.
GarryVolchara [31]

Answer: Yes, The relation is a function, they are the exact opposite.

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Find all real solutions of the equation. (Enter your answers as a comma-separated list.)
34kurt

Answer:

0,1

Step-by-step explanation:

x^2 − x = 0

Factor out an x

x(x-1) =0

Using the zero product property

x=0     x-1=0

Solving each equation

x=0    x-1+1 =0+1

x=0      x=1

The solutions are

x=0,1

7 0
3 years ago
The train clock run fast and gain 4 minutes every 3 days. How many minutes and seconds will it have gained at the end of 2 days.
Katarina [22]

Answer:

2 minutes, 40 seconds

Step-by-step explanation:

set up a proportion and cross-multiply:

4/3 = x/2

3x = 8

x = 2 2/3 which is 2 minutes, 40 seconds

8 0
3 years ago
This is under the Category Exponent Rules (Variable and Coefficients)
Vsevolod [243]

Answer:

20x^6

Step-by-step explanation:

multiply bases and add exponents

4 0
3 years ago
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