Answer:
286.44 miles........
Please help! I need help fast!
Answer:
x=30
y=15
z=150
Step-by-step explanation:
take 2x+x+90=180
we get x=30
and y=15 and z=150
Which matrix represents the solution to this system of equations?
Answer:
1. b
Step-by-step explanation:
Answer:
b is correct
Step-by-step explanation:
took the test sorry bad at explaining
In AABC, AB=8, BC=10, and AC=12. Let M, N, and K be the midpoints of the sides of AABC. Find length of each side of AMNK.
Answer:
4,5,6
Step-by-step explanation:
A midsegment connects two midpoints, and this triangle would be made up of all midsegments. If we know that midsegments are half of the side length, then we can get our answer.
Measures of Position
13
on 14
stion 15
K
estion 16
Points: 0.43 of 1
A certain brand of automobile tire has a mean life span of 34,000 miles and a standard deviation of 2,350 miles. (Assume the life spans of the tires have a bell-shaped distribution.)
For the life span of 37,000 miles, z-score is 1.28
(Round to the nearest hundredth as needed)
(a) The life spans of three randomly selected tires are 33,000 miles, 37,000 miles, and 32,000 miles. Find the z-score that corresponds to each life span.
For the life span of 33,000 miles, 2-score is -0.43
(Round to the nearest hundredth as needed)
Question 16, 2.5.49
Part 5 of 5
For the We span of 32,000 miles, z-score is -0.85
(Round to the nearest hundredth as needed)
According to the z-scores, would the life spans of any of these tires be considered unusual?
O Yes
No
elp me solve this View an example
(b) The We spans of three randomly selected tires are 29,300 milles, 38,700 miles, and 34,000 mes. Using the empirical rule, find the percentile that corresponds to each life span
The Me span 29,300 miles corresponds to a percentile of
The Me span 38,700 miles comesponds to a percentile of
The Me span 34,000 miles corresponds to a percentile of
Get more help-
CO
DELL
a'
|
5 1. (1) More
Clean
If the mean span of automobile tires is 34000 miles and standard deviation is 2350 miles then the z scores that corresponds to the life spans of sample showing 33000 miles,37000 miles and 32000 miles are -0.4255, 1.2766 and -2.1277.
Given that mean span of automobile tire is 34000 miles and standard deviation is 2350 miles.
We are required to find the z score of the sample of 33,000 miles, 37,000 miles, and 32,000 miles.
A z-score basically gives us an idea of how far from the mean a data point is.
Z=(X-μ)/σ
In our case we have to find the mean of life span of three samples.
For the life span of 33000 miles,
Z=(33000-34000)/2350
=-1000/2350
=-0.4255
For the life span of 37000 miles,
Z=(37000-34000)/2350
=3000/2350
=1.2766
For the life span of 32000 miles,
Z=(32000-37000)/2350
=-5000/2350
=-2.1277
Hence if the mean span of automobile tires is 34000 miles and standard deviation is 2350 miles then the z scores that corresponds to the life spans of sample showing 33000 miles,37000 miles and 32000 miles are -0.4255, 1.2766 and -2.1277.
Learn more about z score at https://brainly.com/question/25638875
#SPJ9
Only first part of the question is understandable.
For a scavenger hunt, Jim's mom distributed a bag of 875 jelly beans evenly into 25 plastic containers and hid them around the
yard. If, after the hunt, Jim has a total of 385 jelly beans, then how many of the plastic containers did he find?
OA.
15
ОВ.
275
OC.
11
490
Answer:
C. 11
Step-by-step explanation:
A given line has the equation 10x+2y=-2 .
What is the equation, in slope-intercept form, of the line that is parallel to the given line and passes through the point (0,12)?
Answer:
y=1-5x
Step-by-step explanation:
10x+2y=2
add subtract 10 from both sides
10x+2y=2
-10x. -10x
so now the equation should look like
2y=2-10x
then after that you have to get the Y variable alone so you have to divide everything by 2
2y÷2 = 2÷2 - 10x÷2
After you divide every term by 2 you slope intercept should be
y= 1-5x
please correct me if I am wrong
What is the difference between population parameters and estimates in a sample?
Answer:
Using that sample, you calculate the corresponding sample characteristic, which is used to summarize information about the unknown population characteristic. The population characteristic of interest is called a parameter and the corresponding sample characteristic is the sample statistic or parameter estimate.
Step-by-step explanation:
If you collect a sample and calculate the mean and standard deviation, these are sample statistics.
Find the measure of the missing angle.
Answer:
36 degrees
Step-by-step explanation:
The whole angle is 99. The known angle is 54. Take 54 from 99 and it's 36.
Hope It Helps
Sorry If I'm Wrong
Can yall helppp !! This is Pythagorean Theorem (Level 1) math pleaseee I need helpp :'(
Answer:
sorry for spamming
Step-by-step explanation:
Indian version of brainly is a good place for cha*ting
you can also join if u wish
please help please help
Answer:
i read the question but i really don't know the answer
A housepainter mixed 5 gal of blue paint with every 9 gal of yellow paint in order to make a green paint. What is
a ratio of gallons of blue paint to gallons of yellow paint that will make the same shade of green paint?
a. 25:45
b. 15:45
c. 25:27
d. 20.54
Answer:
A
Step-by-step explanation:
5:9 is the original ratio.
we know that anything times 5 would have the ones place of either 5 or 0 so we can eliminate c and d. Then we test out the other two choices.
25/5=5
45/9=5
A is correct.
15/5=3
45/9=5
Option B is incorrect.
so, the ratio is 25:45
The answer is A!
7:8, 14:16, 21:24, and 28:32 are equivalent ratios, 50, 78 14 16 21 = 28 32 24 Use division to find all the whole number ratios that are equivalent to 24:96 The common factors of 24 and 96 PREMIER
Answer:
yipgiydlilyzljt
hhhfguiihitezkgdzogdzlutzohodzhfzhoyd
Which values of x will make the expression 6x?-54 equal to 0? Select two options.
.
5x2-20
0-3
0-2
00
2
03
Answer:
-2 abd 2
Step-by-step explanation:
Answer:
B and D
Step-by-step explanation:
PLS HELP I NEED HELP
Answer:
8
Step-by-step explanation:
What form of a linear equation is y - 6 = -4(x + 2) ?
Answer:
Point slope form
Step-by-step explanation:
Given
[tex]y - 6 = -4(x + 2)[/tex]
Required
Determine the form of linear equation
A linear has just three forms:
1. The slope intercept form.: This is always in form of [tex]y = mx + b[/tex]
2. The point slope form: This is always in form of [tex]y - y_1 = m(x - cx_1([/tex]
2. The standard form: This is always in form of [tex]Ax + Bxx = c[/tex]
By comparison, the three forms with the question, we can see that option B answers the question.
Write an equation of the line with the given slope and y-intercept.
slope: 1
y-intercept: -6
Help
HELLPP
Find the slope of the line?
Answer:
-1/7
Step-by-step explanation:
If you count up once, for the y-value, then count over 7 times for the x-value, you get 1/7, rise over run.
Then, if you see the slope going backwards, you can see it is negative. Therefor, we get -1/7 for the slope.
Which of the following coordinates is located in Quadrant IV?
O (-2, -4)
(4, 2)
Ο Ο Ο
(-2, 4)
(4, -2)
please answer quick!!!
Answer:
(4,-2)
Step-by-step explanation:
quadrant 4 or IV has positive x and negative y
HELP ASAP giving brainlist!!!
Answer:
I would say its given because all of the sides are the same
Step-by-step explanation:
pls help i give brainliest if u answer early and good
Answer:
1 - BC = 5
2 - 174 (I think, im pretty sure tho)
3- 107
Step-by-step explanation:
Lets be real chief, you aren't here to learn. Ur taking test
Also, I got those numbers based on the images. The pic was kind of blurry
Graph the equation Y= 2/9 |x|
Answer:
go over to the right 2 times and then go up 9 times : )
Step-by-step explanation:
good luck and hope this helps
i need to find tan−1(0.8391) for my math test
The value of the trigonometric function tan⁻¹ ( 0.8391) is 40°.
We are given an trigonometric function:
tan⁻¹ ( 0.8391).
We need to find the value of the function.
Let the function be equal to x.
tan⁻¹ ( 0.8391 ) = x
Now, we can also write it as:
tan x = 0.8391
We need to find an value of x that gives 0.8391 when tan function is applied to it.
So, we get that:
x = 40°
Therefore, the value of the trigonometric function tan⁻¹ ( 0.8391) is 40°.
Learn more about trigonometric function here:
https://brainly.com/question/24349828
#SPJ9
una escalera recostada de la pared , con el piso si la escalera mide 8' y la distancia de la base a la pared es de 6'. Halla el ángulo que forma la escalera
Answer:
me no espanol 24
Step-by-step explanation:
srry
-12+x-34=60
If you like this question please rate this five stars!
Thank you!
Answer:
x=106
Step-by-step explanation:
Let's solve your equation step-by-step.
−12+x−34=60
Step 1: Simplify both sides of the equation.
−12+x−34=60
−12+x+−34=60
(x)+(−12+−34)=60(Combine Like Terms)
x+−46=60
x−46=60
Step 2: Add 46 to both sides.
x−46+46=60+46
x=106
Figure A is a scale image of Figure B.
12.5
2
Figure A
5
Figure B
What is the value of x?
Answer:
x=5
Step-by-step explanation:
figure A is 2/5 of figure B therefore x=5
A report included the following information on the heights (in.) for non-Hispanic white females.
Sample Sample Std. Error
Age Size Mean Mean
20–39 868 65.9 0.09
60 and older 934 64.3 0.11
(a) Calculate a confidence interval at confidence level approximately 95% for the difference between population mean height for the younger women and that for the older women. (Use μ20–39 − μ60 and older.) , Interpret the interval
(b) Let μ1 denote the population mean height for those aged 20–39 and μ2 denote the population mean height for those aged 60 and older. Interpret the hypotheses H0: μ1 − μ2 = 1 and Ha: μ1 − μ2 > 1.
Carry out a test of these hypotheses at significance level 0.001. Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to four decimal places.)
(c) Based on the P-value calculated in (b) would you reject the null hypothesis at any reasonable significance level? Explain your reasoning.
(d) What hypotheses would be appropriate if μ1 referred to the older age group, μ2 to the younger age group, and you wanted to see if there was compelling evidence for concluding that the population mean height for younger women exceeded that for older women by more than 1 in.?
Following are the solution to the given points:
In point a:
When 95% are confidence interval:
[tex]=( \mu_{20-39} - \mu_{60})+(-z_{0.025})((0.09)^2+(0.11)^2)^{0.5} \\\\= (65.9-64.3)+(-1.96) \times 0.14213\\\\=(1.3214, 1.8786)[/tex]
In point b:
[tex]H_0: \mu_1 - \mu_2 =1\\\\ H_a: \mu_1 - \mu_2 > 1[/tex]
In the Z test statistic:
[tex]= \frac{((65.9-64.3)-1)}{((0.09)^2+(0.11)^2)^{0.5}} \\\\= 4.22 \\\\\to p= 0.000012[/tex]
In point c:
The rejection value of the null hypothesis as [tex]p< 0.001[/tex]
In point d:
[tex]H_0: \mu_2 -\mu_1 = 1 \\\\H_a: \mu_2 - \mu_1 > 1[/tex]
Learn more:
brainly.com/question/16162795
The $40 million lottery payment that you have just won actually pays $2
Answer:
wait what is the question?
Step-by-step explanation:
??
I really need some help with this!
Answer:
The answer correct is B
Answer: B
Step-by-step explanation:I hope this helps :)
Eric buys a pack of 36 chocolate bars. He gives one chocolate bar everyday to each of his best friends, Josh and Brian. Write the equation that shows the number of chocolate bars (y) he has left after x days. *
Answer:
36-1x
Step-by-step explanation:
plz let me know if I'm right
Calculate the median of the dataset 5, 10, 12, 4, 6, 11, 13, 5
Answer: 8
Step-by-step explanation:
Median is the middle number of the set of numbers (layed out smallest to biggest)
4, 5, 5, 6, 10, 11, 12, 15
There are 8 numbers meaning the middle numbers are 6 and 10, so inbetween 6 and 10 is 8 so the median is 8
Step-by-step explanation:
Median = 8
Have a good day..