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evablogger [386]
3 years ago
7

The area (

Mathematics
1 answer:
stira [4]3 years ago
4 0
Hello : 
f(r) = πr².... r  <span> <span>><span>  0
</span></span></span>the domain is : <span>] 0; + ∞[<span> </span></span> 
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A number multiplied by itself and then by itself again gives 1000. What is the number?
sergij07 [2.7K]
It is 10 because 10 to the 3rd power or 10 cubed or 10 x 10 x 10 is equal to 1,000. 10 x 10 = 100 and 100 x 10 = 1,000.
4 0
3 years ago
Read 2 more answers
Please answer this question!!
Aloiza [94]
To find the surface area of the rectangular prism you do.

2(lw + lh + wh).

2((26*18) + (26*8) + (18*8))

2(468 + 208 + 144)

2* 820

the answer is 1640cm^2

8 0
3 years ago
Rico paid $180 sales tax on his new $2,400 motorcycle. What was the sales tax percentage rate where he bought his motorcycle?
Artemon [7]

Answer:

it is 7.5 rate

Step-by-step explanation:

I used a calculator to get the answer and it is correct.

4 0
2 years ago
Find all the zeros of the function <br> g(x)=x^3-4x^2-x+22
vagabundo [1.1K]

Answer:

x = -2, x = 3 − i√8, and x = 3 + i√8

Step-by-step explanation:

g(x) = x³ − 4x² − x + 22

This is a cubic equation, so it must have either 1 or 3 real roots.

Using rational root theorem, we can check if any of those real roots are rational.  Possible rational roots are ±1, ±2, ±11, and ±22.

g(-1) = 18

g(1) = 18

g(-2) = 0

g(2) = 12

g(-11) = 1782

g(11) = 858

g(-22) = -12540

g(22) = 8712

We know -2 is a root.  The other two roots are irrational.  To find them, we must find the other factor of g(x).  We can do this using long division, or we can factor using grouping.

g(x) = x³ − 4x² − 12x + 11x + 22

g(x) = x (x² − 4x − 12) + 11 (x + 2)

g(x) = x (x − 6) (x + 2) + 11 (x + 2)

g(x) = (x (x − 6) + 11) (x + 2)

g(x) = (x² − 6x + 11) (x + 2)

x² − 6x + 11 = 0

Quadratic formula:

x = [ 6 ± √(36 − 4(1)(11)) ] / 2

x = (6 ± 2i√8) / 2

x = 3 ± i√8

The three roots are x = -2, x = 3 − i√8, and x = 3 + i√8.

5 0
3 years ago
Maria is recording the percentages she earned on each quiz in her math class. Here are her results for the last 7 quizzes.
Paha777 [63]
22 because you take the smallest and largest number and subtract them so you do 81-59=22
4 0
2 years ago
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