1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Irina-Kira [14]
3 years ago
15

X is a random independent variable with mean 20 and standard deviation of 5. Also suppose that y is a random independent variabl

e with mean of 40 and standard deviation 10. Find the variance and standard deviation of the random variable Z = 2 + 10x
Mathematics
1 answer:
klio [65]3 years ago
4 0
The variable equals 4.
You might be interested in
Ramon earns $1,840 each month and pays $53.10 on electricity. To the nearest tenth of a percent, what percent of Ramon's earning
Tomtit [17]
2.9%

You can find this by dividing $53.10 by $1,840.
8 0
3 years ago
What is the area of a regular octagon with a side length of 6 mm and an apothem length of 7.243 mm? Round your answer to the nea
Harlamova29_29 [7]
OCTA=8, an octagon has 8 sides, thus if one side is 6mm, then all sides, namely the perimeter, is 6+6+6+6+6+6+6+6, or 48.

now, we know what the apothem is.

\bf \textit{area of a regular polygon}\\\\
A=\cfrac{1}{2}ap~~
\begin{cases}
a=apothem\\
p=perimeter\\
-------\\
p=48\\
a=7.243
\end{cases}\implies A=\cfrac{1}{2}(7.243)(48)
5 0
3 years ago
Determine the zeros of f(x)=x^3+7x^2+10x-6
igor_vitrenko [27]
Hello,
x^3+7x^2+10x-6=x^3+3x^2+4x^2+12x-2x-6
=x²(x+3)+4x(x+3)-2(x+3)
=(x+3)(x²+4x-2)
=(x+3)(x+2-√7)(x+2+√7)

zeroes={-3,-2+√7,-2-√7}

4 0
3 years ago
Please answer quickly with explanation. I am in need of major help. PLEASE NO FILE DOWNLOADS EITHER!!
Natali5045456 [20]
I am not sure but I think it’s b
7 0
3 years ago
*<br> Find the area of a triangle: Base of 8 cm Hight of 9 cm
Sliva [168]

Answer:

36 cm

Step-by-step explanation:

The formula to find the area of a triangle is A=1/2bh where b stands for base and h for height.

So, 8 times 9 equals 72, and 72 divided by 2 is 36.

5 0
3 years ago
Other questions:
  • You have a total of 35 coins, all nickels ($0.05) and quarters ($0.25). The total value is $5.75. Find the number of nickels, n,
    13·1 answer
  • MARKING BRAINLIEST From 5 p.m. to 11 p.m. the temperature fell by 3 °F each hour. At 8 p.m. the temperature was 0 °F. Using 8 p.
    11·1 answer
  • On a number line, Danielle drew a dot at 600. Then, she drew another dot on a number that was 500 units smaller. What number was
    14·2 answers
  • Identify the point from the equation y + 5 = 3 (x - 2)
    9·1 answer
  • What’s the value of X
    9·2 answers
  • 6. A survey for brand recognition is done and it is determined that 68% of consumers have heard of Dull Computer Company. A surv
    7·1 answer
  • Help please can figure this out
    14·1 answer
  • Which expression shows another way to find the volume of this prism?
    6·2 answers
  • Which images shows a reflection​
    14·1 answer
  • A pet store has 9 puppies, including 2 poodles, 5 terriers, and 2 retrievers. If Rebecka selects one puppy at random, the pet st
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!