If amount of utility bill is normally distributed with a mean of $105 and a standard deviation of $20. What percentage of your bills would you expect to be between $85 and $125?
Answer:
68% of your bills between $85 and $125
Step-by-step explanation:
The Empirical Rule states that, for a normally distributed random variable:
68% of the measures are within 1 standard deviation of the mean.
95% of the measures are within 2 standard deviation of the mean.
99.7% of the measures are within 3 standard deviations of the mean.
In this problem, we have that:
Mean = $105
Standard deviation = $20
What percentage of your bills would you expect to be between $85 and $125?
85 = 105 - 20
125 = 105 + 20
Within one standard deviation of the mean, so by the Empirical Rule, 68% of your bills between $85 and $125
can someone help me plz?!
what is the square root of 36
Answer:
6 !
Step-by-step explanation:
since 6 x 6 = 36, the square root is 6 !
square root is when u multiply two same numbers for the output... so like 49 would b 7, since 7 x 7 = 49 !!
im not sure if that makes any sense, but i hope it helps !!
Lewis is hiking in a state park when he spots a brightly colored bird in a distant tree. Lewis is 60 feet away from the tree, and the bird is perched on a branch 22 feet above the ground. Lewis is 5 feet tall.
What is the angle of elevation, in degrees, of Lewis' line of sight to the bird?
Answer:
he is 77 feet away from mr. birdie
Step-by-step explanation:
Quite certain it'd be 15.8 degrees.
Think about it, we're trying to figure out his angle of sight. If his eyes are 5 feet above ground, and the bird is 22 feet off the ground, there's really only a 17 ft height difference between the two. After doing the formulas and all, we can see that the angle of his vision is approximately 15.8.
Question 2 (1 point)
(07.01)
Solve 3x−5 = 9. (1 point)
a
x = −3
b
x = 2
c
x = 7
d
x = 8
Answer:
All options are wrong.................
(3x+23)+(7x-4)+(9x-6)+95=540
Answer:
432/19 should be the answer?
Answer:
x = 22.7
Step-by-step explanation:
(3x + 23) + (7x - 4) + (9x - 6) + 95 = 540
combine all like terms
19x + 108 = 540
solve
subtract 108 from both sides
19x = 432
divide 19 from both sides
x = 22.7
hope this helps!
please mark brainliest if correct:)
What is the reduced radical form of 2[3x] +4[48x]-3[50x]
Answer:
48x
Step-by-step explanation:
2(3x)+4(48x)−3(50x)
Multiply 2 and 3 to get 6. Multiply 4 and 48 to get 192.
6x+192x−3×50x
Combine 6x and 192x to get 198x.
198x−3×50x
Multiply 3 and 50 to get 150.
198x−150x
Combine 198x and −150x to get 48x.
48x
Find AC, round to the nearest whole number
20
Triangles are 180 total so just add 118 and 22 then subtract it from 180 for your answer
What is 82×68 this is very hard
Answer:
5576
Step-by-step explanation:
Hope you have a good day, Loves!
Also if I'm right can you let me know please?
Also Also if I am right can I have Brainliest??
Solve for x.
Your Answer:
Question 3 options:
Answer
ava bout 5.5 pounds of beef at kroger. He paid 13.75 at the register. How much did the beef cost per poun
Answer:
The answer is 1.5
Step-by-step explanation:
Answer: 40 cents per pound
Step-by-step explanation:
Divide 5.5/13.75
if the cost of a tv starts at 1 million in 1995 then jumps to 1.3 million in 1998. how much would the estimated cost be in 2021?
Answer:
3.6million
Step-by-step explanation:
See image for explanation (gotten from Chegg tutor)
Answer:
3.6 million
_______
/ (o) (o) \
/ -___- \
-------------------
Which of these triangles are definitely not congruent to any of the others?
Check all that apply. I think it’s c and d but I’m not sure!
Answer:
Your correct, it's C and D
Step-by-step explanation:
A and E are right triangles, so that's not the answer. B and F are isosceles triangles so that's not the answer. C and D are 2 DIFFERENT obtuse triangles so that's why C and D are the answers.
WHAT IS 7352 divided by 45
Answer:
163.4
Step-by-step explanation:
can u plzz find me a length of adjacent
Answer:
There is no answer
My Logic:
The picture does not specify the degree of angle for each corner, nor can i understand what the random "a" is. also the side all the way to the left has an un-readable number.
1. VOCABULARY Copy and complete: 'Two polygons are similar if
corresponding angles are ? and corresponding side lengths are ?.
Answer:
?????????????????/?
Step-by-step explanation:
Help for brainliest !!
Answer:
I think the option b
But not sure about it
Answer:
A. 5/9 square meters
Step-by-step explanation:
Given
Length (L) = 5/6 meter
Breadth (b) = 2/3 meter
Now
Area of the garden
= L * b
= 5/ 6 * 2 / 3
= 5 / 9 square meters.
Hope it will help :)
What is 26% of 480?
Please
Answer:
124.8 is 26% of 480.
Step-by-step explanation:
required percentage is :
26/100 × 48013 / 50 × 48013 / 5 × 48 124.8i hope it helped...
Answer this:
10. 25% of 24=
11. 25% of 28=
12. 25% of 40=
decide if each expression is equivalent to 2^6 or 4^4
Answer:
it's just asking if the expressions ( whatever those are) are equal to 2^6 (64) or 4^4 (256). I hoped this helped
Owls eat voles (a relative of mice); voles eat grass and seeds. Which food chain is correct?
grass ----> Vole ----> Owl
Hope this helped :3
Does this expression represent the sum 13.76 + 2.8?
15.84
Answer: false
Step-by-step explanation:
false
Answer:
False
Step-by-step explanation:
Numbers dont add up
Solve for x.
6
4
X
6
1
x = [?]
Enter the number, in decimal form,
that belongs in the green box.
9514 1404 393
Answer:
x = 3.6
Step-by-step explanation:
The angle bisector divides the segments proportionally. This means they satisfy ...
bottom segment / side segment = x/6 = (6-x)/4
Multiplying by 12 gives ...
2x = 3(6 -x)
2x = 18 -3x . . . . . eliminate parentheses
5x = 18 . . . . . . . . add 3x
x = 3.6 . . . . . . . . . divide by 5
_____
Alternate solution
I like to try to work these mentally. The total of side lengths is 10, so the total base length (6) is 6/10 = 0.6 times that. Then x will be 0.6 times the left side length: 0.6·6 = 3.6 = x.
Mei is trying to list as many prime numbers as she can for a challenge problem for her math class. She finds
that the polynomial expression n^2 - n +41 can be used to generate some, but not all. prime numbers. What is the
degree of Mei's polynomial?
Simplify the expression 8(2x - 6y + 3) using the distributive property. *
Answer:
16x - 48y +24
Step-by-step explanation:
We can use the distributive property to expand:
8(2x - 6y + 3)8 x 2x - 8 x 6y + 8 x 316x - 48y + 24Hope this helps!!
Answer:
(16x48y+3)
Step-by-step explanation:
tell me if u am wrong
and your final answer is -29
This is what I have so far, but I’m not sure what I need to fix. please help asap!!
Answer:
I think your answer is correct already. You just have to put your latus rectum, directrix, and focus into your drawing. :)
for asymptotes:
Let's change the centers into (-3, 2). Therefore, (y-2)² - (x+3)²/16 = 1
To get the asymptotes, let's equate the equation to zero (0) instead of one (1).
(y-2)² - (x+3)²/16 = 0
Notice that this equation is the difference of two squares.
Let x² = (y-2)² and y² = (x+3)²/16
Therefore, we have x² - y² =0
The factors of two squares are:
(x+y)(x-y)=0
Then, equating each factor to zero:
x+y=0
x-y=0
Substituting the real equations:
» (y-2) + (x+3)/4 = 0
y-2 = - (x+3)/4
y= -(x+3)/4 + 2
» (y-2) - (x+3)/4 = 0
y-2 = (x+3)/4
y= (x+3)/4 +2
Factorise fully the following:
a) x² - 2x
b) 6x2 + 12x
c) 3-9x
d) 4x + 28x
Answer:
Please find pdf attached
Step-by-step explanation:
where does graph of y=sin (sin X) begins
Answer:
Y=8 X=2
Step-by-step explanation:
8(4-x) = 7x+ 2 what is x equal too
Answer:
32-8x=7x+2
32-2=7x+8x
30=15x
30/15=x
2=x
Step-by-step explanation:
Explain your answer !
( WILL GIVE BRAINLST)
Answer:
C) 1/3, 2, √7
Step-by-step explanation:
√7= 2.6
1/3= 0.3
2=2
1/3, 2, √7
C.
*if using a calculator*
1/3= .333
square root 7 equals about 2.646
therefore, we know .333 (1/3) is the smallest out of the numbers and 2.646 (sqr root 7) is the biggest.
*if you cannot use a calculator*
We know 1/3 is less than 1 because 3/3 would equal 1 and we only have 1/3.
We don’t know the square root of 7, however we know that it has to be between 2 and 3 because the square root of 4 is 2 and the square root of 9 is 3. 7 is between those two numbers, so therefore we know that the square root would have to be between 2 and 3.
Knowing that, we could figure out that since 1/3 is less than 1 it would be the smallest. Since the sqr root of 7 is between 2 and 3, it would be bigger than 2 and the biggest out of the 3.
Conclusion:
The order is 1/3, 2, sqr root 7