Answer: the required variance is 11.6555
Step-by-step explanation:
Given data;
xi = 2 19 23 14 20 16 21 18 14 19
mean x" = 2+19+23+14+20+16+21+18+14+19 / 10
mean x" = 166 / 10 = 16.6
so;
X xi - x" (xi - x")²
12 -4.9 24.01
16 -0.9 0.81
23 6.1 37.21
13 -3.9 15.21
18 1.1 1.21
18 1.1 1.21
19 2.1 4.41
18 1.1 1.21
13 -3.9 15.21
19 2.1 4.41
Total 104.9
Variance = n_i=1∑(xi - x")² / n-1
Variance = 104.9 / 9
Variance = 11.6555
Therefore, the required variance is 11.6555
HELP PLZ HURRY .What is the solution to the system of equations?
a(5,0)
b(0,5)
c(0,-5)
d(-5,0)
HELP KHAN ACADEMY BE QUICK WILL GIVE BRAINLIEST.
Answer:
Just make a duplicate tab, disconnect your internet, click use a hint until it gives you the answer, then when you get it close that tab, reconnect the internet then kpow
Step-by-step explanation:
your welcome lol
Answer: I'm not quite there yet. lol
the 30% discount on a $49 dollhouse
Answer:
$34.3
Step-by-step explanation:
0.3 times 49 equals 14.7
49-14.7=34.3
Solve the system of equations.
-5x + 4y = 3
X = 2y - 15
Answer:
x=9
y=12
Step-by-step explanation:
. Substitute the given value of x into the equation so... -5(2y-15)+4y=3
. y=12
. Substitute the given value of y into the equation x=2y-15 so... x=2 x 12-5
. x=9
.The possible solution of the system is the ordered pair (x,y) so... (x,y)=(9,12)
PLEASE HELP ASAP!! Will give 20 points
You start with 100 dollars in your bank account. At your favorite coffee shop you purchase 7 lattes that cost 5 dollars each. Write an expression to describe how much money you will have left in your bank account after you buy 7 lattes. Use the letter n for your variable.
Write expression: __________
What is your balance after buying 7 Lattes
Answer:
7x5=M
*M is for Money*
7x5=35
100-35=
65 is the balance
a=3, b=15, c=Pythagorean
theorem
Answer:
Step-by-step explanation: Given a=3 and b=15,
c = 3√26 = 15.297058540778
∠α = 11.31° = 11°18'36" = 0.1974 rad
∠β = 78.69° = 78°41'24" = 1.3734 rad
area = 22.5
perimeter = 33.297058540778
h =
15√26
26
= 2.9417420270728
What is the solution of the system of equations? (_,_)
Answer:
0, 5
Step-by-step explanation:
Given: Parallelogram KLMN
Prove: ∠N≅∠L and ∠M≅∠K
Answer:
PLZ ANSWER FAST WILL GIVE 100 POINTS
Answer:
See attached
Step-by-step explanation:
The answer is in the attached picture below
Help me please will give brainliesttt
These triangles are congruent by the triangle HELP FAST
Answer:
B. SAS
Step-by-step explanation:
Two sides of one triangle are congruent to two corresponding sides of the other triangle as shown in the figure.
The included angles are vertical angles, so they are congruent.
Answer: SAS
Martin won first place in the 100-meter dash with a time of LaTeX: 14\frac{23}{100}14 23 100 seconds. Samuel came in second place with a time of LaTeX: 15\frac{7}{10}15 7 10 seconds. Select True or False for each statement. A common denominator of the mixed numbers is 100. [ Select ] To find the difference between the runners’ times, Samuel’s time needs to be rewritten. [ Select ] Samuel’s time written with a denominator of 100 is LaTeX: 15\frac{70}{100}15 70 100 [ Select ] Martin beat Samuel by
Answer: 14 23/100
Step-by-step explanation:
For triangle △ABC below, prove base angles A and C are congruent.
Answer: A and C are both acute angles
if a rectangle has an area of 32cm², a height of 8cm,what is the length of the other side?
Answer:
the answer for this question is 4
Answer:
4
Step-by-step explanation:
b)convert 24 kilometres into miles - 1
Answer:14.9129
Step-by-step explanation:
Answer:
hmmm sorry i dont really know
Factor 7x + 21 using the GCF
Answer:
7(x+3) GFC=7
Step-by-step explanation:
Answer:7(x+3)
Step-by-step explanation: Divide 7 on both sides which gives you 3 as your GCF so you write 7(x+3) .
Hope it helps :)
how do i solve this step by step PLS HELP ASAP
Answer:
x=42
Step-by-step explanation:
step 1: multiply 3 to both sides of the equation to isolate x
then you get x=14x3=42
x=42
Answer:
X=42
Step-by-step explanation:
14 * 3= 42
14 = x/3
14= 42/3
divide
14=14
I WILL GIVE BRAINLIEST!! PLEASE HURRY IM TIMED.
answer choices
A. -5/2
B. -2/5
C. -3/4
D. -4/3
Answer: A. -5/2
Step-by-step explanation:
Which net represents this rectangular prism?
Tori worked 48 hours one week. Her hourly pay for 40 hours is $16.20. Her overtime rate is 1.5. What was her
total pay that week?
Find the percent of change, original: $75 new: $60
Answer:
80%
Step-by-step explanation:
60/75 = 4/5 = 0.80
Therefore, the percentage of change is 80%.
Find the slope of the line graphed below.
Answer:
3over 2 because u go up by 3 and right by 2 u welcome
PLEASE ANSWER THIS I AM ON THE LAST SRAW WITH MY MOM
Answer:
A .25
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
3 dozen is 3 x12 because a dozen is 12. Do 9/36, you get $.25. Sorry about your mom lol.
You want to estimate the mean number of sentences in a magazine advertisement.How many magazines advertisements must be included in the sample if you want to be 95% confident that the sample mean is within one sentence of the population mean
Complete question:
You want to estimate the mean number of sentences in a magazineadvertisement. How many magazine advertisements must beincluded in the sample if you want to be 95% confident that thesample mean is within 1 sentence of the population mean ? (sigma =5)
Answer:
96
Step-by-step explanation:
We have level of confidence = 95%
Alpha = 1-0.95
= 0.05
Alpha/2 = 0.025
Z-alpha/2 = 1.96
E = margin of error = 1
For this question the formula to derthe sample size is given as:
n = [(Za/2 x sigma)/E]²
n = (1.96 x 5/1)²
n = 9.8²
= 96.04
So 96 magazines advertisement must be included in the sample to be 95% confident.
What is a deduction ?
HELP PLS I'LL GIVE BRAINLIEST!!!!!
Answer:
wht is you need help on? you just gave us a paper not saying anything else
Step-by-step explanation:
You have 54 pictures to put in a photograph album. Each page of the album holds 4 pictures. How many pages can you fill?
Answer:
You can fill 13.5 pages
Step-by-step explanation:
You would do 54 divided by 4 equals 13.5
Can someone help me
Answer:
3 cm
Step-by-step explanation:
First, we have to understand what happens if two shapes are similar. When two shapes are similar, the angles are equal in both. This means the sides will be in the same ratio from one shape to another.
[tex]\frac{7.2}{t}=\frac{9.6}{4}[/tex]
Using the equation above, we can find t. We use cross multiplication (ad = bc)
7.2 * 4 = 9.6t
9.6t = 28.8
t = 3 cm
someone can help me ???
Answer:
wx=51
Step-by-step explanation:
8a-5=5a+16
3a=21
a=7
8(7)-5=wx
wx=51
Answer:
The length is 56
Step-by-step explanation:
First, since WX and ZY are the same length, set them equal to each other and solve for a:
8a-5 = 5a+16
8a = 5a + 21
3a = 21
a = 7
Now, you can plug in 7 for a in the original equation and get:
8a-5
8(7)-5
56-5
51
51 is your final answer!
Order the lengths of the sides in the given figure from least to greatest.
AC, AB, BC
BC, AB, AC
AC, BC, AB
AB, AC, BC
Answer:
AC,BC,AB
Step-by-step explanation:
CORRECT ME IF ME WRONG
Need help fast did I do correct
Answer:
You only got one right the right answers are "the graph is decreasing in intervals (1) and (4)" and "The graph shows a constant function in interval (3)"
Step-by-step explanation:
I took the test.
Hope this helpssss
Answer:
Only statements 1 and 5 are true.
Step-by-step explanation:
Statement 1: True
In intervals 1 and 4, the graph slopes down to the right. That shows a decreasing function.
Statement 2: False
Interval 2 goes up to the right. That is an increasing function, not a constant functions.
Statement 3: False
The graph increases in interval 2 but decreases in interval 4.
Statement 4: False
The graph has intervals of increase, decrease, and constant value.
Statement 5: True
Interval 3 is horizontal, so it is constant.
Answer:
Statements 1 and 5 are true. All others are false.