Answer:
16.68 cm
Step-by-step explanation:
Given that :
Mean , m = 15
Standard deviation, s = 2
Length of salamander that would Place it at 80% of salamander length :
P(Z ≤ x) = 0.8
Zscore equivalent to 0.8 = 0.842
Using the relation :
Zscore = (x - m) /s
0.842 = (x - 15) / 2
1.684 = x - 15
Add 15 to both sides
1.684 + 15 = x - 15 + 15
16.684 = x
Hence, x = 16.68 cm
The length of salamander that would place it at the 80th percentile of salamander lengths is 16.684 cm and this can be determined by using the formula of z-score.
Given :
The lengths of salamanders have a normal distribution with a mean of 15 cm, and a standard deviation of 2 cm.
The following steps can be used in order to determine the length of the salamander:
Step 1 - The formula of z-score can be used in order to determine the length of the salamander.
[tex]z = \dfrac{x-\mu}{\sigma}[/tex] --- (1)
Step 2 - For the value of [tex]P(z\leq x)=0.8[/tex] the value of 'z' is 0.842.
Step 3 - Now, substitute the values of z, [tex]\mu[/tex], and [tex]\sigma[/tex] in the expression (1).
[tex]0.842 = \dfrac{x-15}{2}[/tex]
Step 4 - Simplify the above expression.
[tex]x = 15 + 1.684\\x = 16.684[/tex]
So, the length of salamander that would place it at the 80th percentile of salamander lengths is 16.684 cm.
For more information, refer to the link given below:
https://brainly.com/question/13299273
What is the value of x?
Answer:
35 degrees
Step-by-step explanation:
Answer:
x = 35 degrees.
Step-by-step explanation:
If two lines intersect each other, then the angles across from each other will equal to one another. Because the angle across from x is 35 degrees, we know that x equals 35 degrees as well.
Hope this helps! Feel free to mark me Brainliest if you feel this helped. If you have any more clarification questions, please ask them below! Have a good day, and good luck on your assignment. :)
(In the diagram below, angles 1 and 2 are the same, and angles 3 and 4 are also the same.)
Graph the linear equation.
y = 4x - 5
Rearrange the formula to make a the subject.
Please help.
Answer:
[tex]a = \frac{5b+w-2}{15}[/tex]
Step-by-step explanation:
[tex]w=5(3a-b)+2\\w-2 =5(3a-b)\\w-2 = 15a - 5b\\w-2+5b = 15a \\5b+w-2= 15a\\a = \frac{5b+w-2}{15}[/tex]
What is the factored form of this expression?
18x2 − 50
Answer:
_14
Step-by-step explanation:
step1 18×2 -50
step2 18×2 =36_50
step3 36_50=_14
Answer:
2(9*x-25)=18×2-50
Step-by-step explanation:
the answer is in the problem since we know 1 times anything will stay the same. so just divide the other integers by 2 and put the problem in parentheses.
ha- me again
help me please
Answer:
The first one
Step-by-step explanation:
The dots are the farthest away from the line in that one.
b) Given y= 5x – 4, enter the value of x when y = –39
Answer:
try using 7 for your anwser i hope this helps
Step-by-step explanation:
which pairs of expressions below are equivalent . ?
Answer:
It should be the second option
Step-by-step explanation:
I hope this helps you
Game Stop bought a video game for $20 and marked up the price 175%. What price did Juan pay for the game when he bought it at Game Stop?
Answer:
$55
Step-by-step explanation:
175%x$20=$35
$20+$35=55
Help, I have to turn this in soon
Answer:
b
Step-by-step explanation:
i got a 100 on it yesterdy
Answer:
A - Congruent segments
B - Perpendicular bisector
C - Angle Bisector
D - Congruent angles
PLS HELP. It due today !
Answer:
[tex] \boxed{3 :2 :4:1}[/tex]
What relationship do you notice between the squares of
the right triangle?
The special relationship that exists between the squares of the lengths of the sides of a right triangle is known as the Pythagorean Theorem. The Pythagorean Theorem states that the sum of the squares of the lengths of the legs of a right triangle equals the square of the length of the hypotenuse.
This is all I know.Hope it helps~Good luck with your work!!~ \^o^/A building casts a 32m shadow when the sun is at an angle of 30 degrees to the vertical. How tall is the building to the nearest meter?
Answer:
16m tall
Step-by-step explanation:
Distance casted by the shadow = 32m = hypotenuse
Angle of elevation = 30 degrees
Required
Height of the building = opposite
Using the SOH CAH TOA identity
sin theta = opp/hyp
sin 30 = x/32
0.5 = x/32
x = 0.5 * 32
x = 16m
Hence the building is 16m tall
what is the value of (3/4)
Answer: 0.75
Step-by-step explanation:
Is (2, 4) a solution of 2x – 7y < -10?
Choose 1 answer:
A
Yes
B
No
Answer: NO DEFINITLY NOT
Step-by-step explanation:
2,4 is on a COORDINATE PLANE not an equation plz mark me brainliest
Answer:
yes
2(2)-7(4)= -24
-24<-10
HELP I AM SO CONFUSED AND I NEED A GOOD GRADE
Please help me with this problem
Answer:
i cant see the pic please send a better one and i reloaded it and it still does not work
Step-by-step explanation:
Dianne's profit from selling magazine subscriptions varies directly with the number of subscriptions sold. Dianne made $30 from selling 24 subscriptions. Which equation relates Dianne's profit (y) to the number of subscriptions she sold (x)?
B) I say this bcz I divided 30 by 24 and got 1.25
Profit=1.25(subscription)
(If someone else proves this wrong then I am sorry but I am in Middle School and my teacher just taught me this and I got an 100 so if it doesn't help I'm sorry) (I even used all those math calculator and word problem websites)
Witch expressions are equivalent choose ALL that apply. pls help
Answer:
These are all equivalent:
7 x 7 x 7 x 7
7 to the fourth power
7^4
Help first gets brainly
Answer:
1. 100 1. 150 1. 1
2.45 2. 800
Step-by-step explanation:
1. 25% * 400 = 0.25 * 400 = [tex]\frac{1}{4}[/tex] * 400 = 100
2. 50% * 90 = 45
1. 75% * 200 = 0.75 * 200 = 3/4 * 200 = 150
2. 10% * 8000 = 0.1 * 8000 = 800
1. 5% * 20 = 0.05 * 20 = 1
4x-13=12-x
how do i show my work
Answer:
x=25
Step-by-step explanation:
4x-13=12-x
4x+x=12+13
5x=25
x=25
Jason has $10. He saves $3 every day. How many days will it take him to save $22?
Answer:
4 Days
Step-by-step explanation:
Day 1: 10+3= 13
Day 2: 13+3=16
Day 3: 16+3=19
Day 4: 19 + 3= 22
PLEASE HELP ASAP ITS DUE TODAY!
1) y = -1(5x) and x = 3
a) -125
b) -0.02
c) 8
d) 9
2) y = 0.25 (6x) and x = 2
a) -125
b) -0.02
c) 8
d) 9
e) 162
3) y = -2(0.1x) and x = 2
a) -125
b) -0.02
c) 8
d) 9
e) 162
PLEASE HELP ME QUICK!!!!
USE ARITHMETIC OR GEOMETRIC SEQUENCE TO SOLVE.
Lisa wants to get a new phone. An iPhone 12 is $800 while an iPhone 8 is $600. If the iPhone 12's price goes down by 10% each year and the iPhone 6's goes down by 5% each year, Which phone would be the cheapest for Lisa to get after three years?
Answer:
iPhone 12!!!!!!!!!!!!
Answer:
The iphone 8
Step-by-step explanation:
To find the nth term of a geometric sequence we have the following equation
ar^(n-1)
where a is the first term
r the is the common ratio
n is the term
we can see that the first term for the iphone 12 is 800, the common ratio is .9 (1-.1), and we need the third term
Therefore the price of an iphone 12 after 3 years is
800*.9^(3-1)
which is 648
The iphone 8's first ter is 600 and the common ratio is .95 (1-.05)
using the same equation
600*.95^(3-1)
which is 541.5
A box filled with many different color crayons there are 40 white crayons 24 green crayons 12 red crayons 24 golden crayons and 20 blue crayons if you have to select a crayon without looking into the box what is the probability that you will pick a white or blue crayon do you guys now the answer
Answer: The answer is 50%
Step-by-step explanation: You have to add up all of the values to get the total number of crayons. Then after, you have to divide the amount of blue and white crayons by the total amount of crayons.
please help . friends
Answer:
which ones do u want me to answer
Step-by-step explanation:
Which equation describes a line that passes through the point (4, -1) and a slope of 6
Answer:
y+1=6(x-4)
y+1=6x-24
y=6x-25
Answer: y = 6x - 25
what is this??????????
Answer:
not enough info it's just saying that the sides with II are equal and the ones with I are equal
Answer:
I wanna say its the first one or the last one?
whats the slope form?
Answer:
Step-by-step explanation:
y=mx + b
slope form = 1/-2
Answer:
y = -1/2x + -3 is the correct answer
20. Write an equation in slope-intercept form for the line that has a slope
of 2/3and y-intercept of (0, – 5).
Answer:
y = 2/3x -5
Step-by-step explanation:
when do get to message people privately??
(can someone please tell me)
Answer:
You have to answer 1,000 questions i think
Step-by-step explanation: