9x^2+16=0 what are the solutions

Mathematics

1 answer:

seraphim [82]3 years ago

8 0

X=4i/3,-4i/3

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A company is setting up offices in two different cities. The number of employees hired by the company for its office in city A o

labwork [276]

For this case we have the following functions:
City A:
f (x) = 9x
City B:
g (x) = 3 (2) ^ x
The total number of employees will be:
h (x) = f (x) + g (x)
Substituting we have:
h (x) = 9x + 3 (2) ^ x
Rewriting we have:
h (x) = 3 (3x + (2) ^ x)
For 5 months we have:
h (5) = 3 * (3 * (5) + (2) ^ 5)
h (5) = 141
Answer:
the total number of employees in the company over x months and the total number of employees will be 141 when the function is:
h (x) = 3 (3x + (2)^x); 5 months

3 0

3 years ago

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What is the volume of a cone with a base radius of 5 m and a height of 12 m

dolphi86 [110]

Volume of a cone = [(pi)r^2(h)]:3 = [3.14 (25m^2)(12m)]:3 = 314in^3.

7 0

2 years ago

A is an unknown number when you round a to the nearest thousand you get 21,000 when you round a to the nearest hundred you get 2

beks73 [17]

The unknown number a should be 20,500.

4 0

2 years ago

What is the product?<br> (-2x - 3y ?) (-4x-3)

statuscvo [17]

Answer:

8x²+6x+12xy+9y

Step-by-step explanation:

⇒(-2x - 3y)(-4x - 3)

⇒(-2x × -4x)+(-2x × -3)+(-3y × -4x)+(-3y × -3)

⇒8x²+6x+12xy+9y

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3 years ago

An arithmetic sequence has t1=5 and t2=8 find tn and sn

RoseWind [281]

Answer:

$a_n=2+3n$

$\displaystyle S_n=\frac{7n+3n^2}{2}$

Step-by-step explanation:

<u>Arithmetic Sequences </u>

The arithmetic sequences are identified because any term n is obtained by adding or subtracting a fixed number to the previous term. That number is called the common difference.

The equation to calculate the nth term of an arithmetic sequence is:

$a_n=a_1+(n-1)r$