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Travka [436]
3 years ago
5

Write a variable expression to represent the phrase a number times 8

Mathematics
1 answer:
Nat2105 [25]3 years ago
4 0
A number (we will call X) times 8 Is 8x
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Factor completely 3x^4 - 3x ^3 - 18x ^2. Which of the following is one of the factors?
Otrada [13]

Answer:

3x^4 - 3x ^3 - 18x ^2=3x^2(x+2)(x-3).

Step-by-step explanation:

The expression 3x^4 - 3x ^3 - 18x ^2 consists of three terms:

  1. 3x^4;
  2. -3x^3;
  3. -18x^2.

These three terms have common factor 3x^2. Thus,

3x^4 - 3x ^3 - 18x ^2=3x^2(x^2-x-6).

Consider the expression x^2-x-6. You can rewrite it as

x^2-x-6=x^2+2x-3x-6=x(x+2)-3(x+2)=(x+2)(x-3).

The whole expression takes look

3x^4 - 3x ^3 - 18x ^2=3x^2(x+2)(x-3).

7 0
3 years ago
A circle with a circumference of 51 inches to find the area
Kaylis [27]

\textit{circumference of a circle}\\\\ C=2\pi r~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ C=51 \end{cases}\implies 51=2\pi r\implies \boxed{\cfrac{51}{2\pi }=r} \\\\[-0.35em] ~\dotfill\\\\ \textit{area of a circle}\\\\ A=\pi r^2\qquad \implies A=\pi \left( \cfrac{51}{2\pi } \right)^2\implies A=\cfrac{51^2}{2^2\pi }\implies A\approx 206.98

4 0
3 years ago
Please help me. please help me​
Delicious77 [7]
The answer is 38.1.078125
3 0
3 years ago
What would 526 ÷by 2 be
spayn [35]
Just divide it by two. That just means half of 526, which is 263.
3 0
3 years ago
Read 2 more answers
Number 24 only A B C and D
stepan [7]

Answer:

a) V = 288 - h

b) (0,288)(1,276)(2,264)(3,252)(4,240)

c) graph the above point

d) Volume decreases as height increases

Step-by-step explanation:

Step 1 :

a)

The given equation is V = 12(24-h)

Using the distributive property we have

V= 12*24 - 12 * h = 288-h

b)

The ordered pairs (h,V) can be obtained by giving different values for h and computing the corresponding V values

When h = 0 ,V= 288 -0= 288

When h = 1 ,V= 288 -12*1= 276

When h = 2 ,V= 288 -12*2= 264

When h = 3 ,V= 288 -12*3= 252

When h = 4 ,V= 288 -12*4= 240

Hence the ordered pairs are (0,288)(1,276)(2,264)(3,252)(4,240)

Step 3 :

The above points can be graphed using the values of h in the x axis and the values of V in the y axis

Step 4:

The above equation shows that the value of the volume V decreases as the value of h increases and becomes negative for values of h >24

7 0
3 years ago
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