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3 years ago

I need help with this question

Mathematics

2 answers:

leonid [27]3 years ago

8 0

The answer must be G, after calculating, I got 5.45

Rama09 [41]3 years ago

6 0

Answer:

Step-by-step explanation:

An integer is a whole number. Round each of your answers to the nearest tenth (for the 5's, you round up), and you see that choice G, 5.5, can be divided by 1.1 to equal 5.

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Without using a calculator determine the number of real zeros of the function f(x) = x^3 + 4x^2 + x -6

hodyreva [135]

Try this:
x³+4x²+x-6=0
1) To re-write the equation into form:
1*x³+4*x²+1*x-6=0, the note 1+4+1=6, it means x=1
2) to re-write the equation into form:
(x-1)(x²+5x+6)=0
(x-1)(x+2)(x+3)=0
3)
$\left[\begin{array}{ccc}x-1=0\\x+2=0\\x+3=0\end{array}\right \ \ \textless \ =\ \textgreater \ \left[\begin{array}{ccc}x=1\\x=-2\\x=-3\end{array}\right$
Answer: -3;-2;1.

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3 years ago

Solve <br> 4x to the second power<br> Minus 9

alexira [117]

$4x^2-9$

Here I have included 3 methods: Differentiating, Integrating and factorize

Differentiating:

$4x^2-9$

$2*4x^2^-^1$

$8x^2^-^1$

$= 8x$

Integrating:

$\int\limits 4x^2-9dx$

$\frac{4x^3}{3}-9x+C$

Factorise:

$(2x-3)(2x+3)$

6 0

3 years ago

Read 2 more answers

Find the percent of discount. Round to nearest tenth.

konstantin123 [22]

Your answer is 31% I believe.

8 0

3 years ago

Find the surface area

horsena [70]

Formula: SA = 2πr² + 2πrh
h =40 in
Diameter d =12 in.
Radius = r = d/2 = 12/2 = 6 in

SA = 2π6² + 2π*6*40 = 72π + 480π = 552π (in²)

SA = 552π = 552*3.14 = 1733.28 (in²)
Answer: 1733.28.

4 0

2 years ago

A square rug is centered in a square room. Each edge of the rug is 2 feet from the nearest

a_sh-v [17]

Answer:

I think its 8x8

Step-by-step explanation:

To find the area of a square room is length times width and I know that 10x10 is 100 so I can assume that the room is 10x10. Now you say the edge of the rug is 2 feet from each wall and 10-2 is 8 so thats how I got 8x8.

5 0

3 years ago