Answer:
Interval ( 24 ; 40 ) has 136 participants
Interval ( 16 ; 40 ) has 163 participants
Step-by-step explanation:
Normal distribution.
As variance is 64 then standard deviation is σ = 8
And mean μ₀ = 32
We can see that μ₀ ± σ is 32 ± 8
The interval ( 32- 8 ; 32+8 ) is ( 24 ; 40 )
By empirical Rule we know that μ₀ ± σ contains 68% of the population then 200*0,68 = 136
The number of participants between 24 and 40 is 136
By symmetry of these 136 half of them are between 32 and 40 ( 136/2 = 68 ) ( between mean and 40 )
Now in the interval ( 16 ; 40 ) we note that 16 is 32 - 16 = 16 or μ₀ - 2σ
And again by empirical rule μ₀ ± 2σ has 95 % of the population that means 200*0.95 = 190 and by symmetry 190/2 95 are between μ₀ - 2σ, therefore
95 people are between μ₀ - 2σ or between ( 16 ; 32 ) and between ( 32 ; 40 ) there are 68 people then
The interval ( 16 ; 40 ) has 95 + 68 = 163 participants
what is the conjugate of 7+2√5
i don’t know how to do this please help
Which value or values for the variable c from the set below will make 2 + 0.5c < 2c true
{0.2, 0.7, 1, 3}
A) Only 3
B) 1 and 3
C) 0.7, 1, and 3
D) All the values in the set
A teacher evenly distributes 7 packages of markers to 3 groups of students.
Which two of the following represents how many packages of marker each
group receives?
A. 7/3
B. 3/7
C. 2 ⅓
D. 2.1
E. 21
Answer:
Step-by-step explanation:
2 1/3
A rectangular has an area of 12 ft.² and a length of 5 feet what is the width
Answer:
12/5
Step-by-step explanation:
Width times Length = the area
w*5 = 12
w = 12/5
Answer:
w=2.4ft
Step-by-step explanation:
Find the measure of angle4
A.113
B. 33.5
C.67
Answer:
B
Step-by-step explanation:
Took it
a real estate agent sells a house for $360,000. the amount was 30% of her sales for the entire week. which equation could be used to determined s, the total amount of sales for the week
Answer:
1 200 000 $
Step-by-step explanation:
(100 divide per 30 ) x 360 000 $
Trophies for Gunther’s soccer team will cost $6.25 each, plus 15 cents for every word on the engraving. Which equation could be used to find the cost, c, of each trophy based on the number of words, w , on the engraving?
Select one:
c=6.25+0.15w
c=6.25−0.15w
c=6.25+15w
c=15+6.25w
Answer: c=6.25+0.15w
Step-by-step explanation:
If f(1) = 2 and f(n+1) = f(n)^2 – 3 then find the value of f(3).
Answer:
The value of f(3) = -2.
Step-by-step explanation:
First of all, let's find f(2).
[tex]f(n+1)=f(n)^{2}-3[/tex]
[tex]f(1+1)=f(1)^{2}-3[/tex]
[tex]f(2)=f(1)^{2}-3=2^{2}-3=1[/tex]
Now, we can find f(3):
[tex]f(2+1)=f(2)^{2}-3[/tex]
[tex]f(3)=f(2)^{2}-3=1^{2}-3=-2[/tex]
Therefore, the value of f(3) = -2.
I hope it helps you!
Determine whether the ratios 5:7 and 10:21 are equivalent
Answer:
Step-by-step explanation:
No, thoose two ratios are not equivalent, but I can show you the ones that are equivalent, {You can write 5/7 or 10/14 or 20/28 or 40/56. There! 3 equivalent ratios.}
4) Line L has equation y = 4x - 7, and line M is parallel to line L and passes through the point (2,15). Determine the equation of line M. A) y = 4x + 7 B) y = 2x + 7 ©). y = 4x + 15 D) y = 2x + 15
Answer:
the answer is A.y=4x+7
Step-by-step explanation:
Line M is parallel to the line L, so the equation for line M isy=4x+b
Plug in the coordinates of the point (2,15) , you get:
15=4*2+b
Solve that to get b=7
Therefore the equation of line M is y=4x+7
A collector has 2792 coins
altogether. Half of the coins
are on display. The collector
buys more coins at an auction
so that the coins on display
are now 40% of the collection.
How many coins are bought at
the auction?
Answer:
3490 coins
Step-by-step explanation:
Given data
Total coins= 2792 coins
Half of the coins are on display
that is 50% are on display
=2792/2
=1396
let the coins bought be x
40% of x= 1396
40/100*x= 1396
0.4x= 1396
x= 1396/0.4
x=3490
Hence 3490 coins were bought
what would be yearly earnings for a person with $6000 in savings at an annual interest rate of 2.0%
Please could answer this question for me
Answer:
a) 26.2cm
b) 13.8 cm
please mark brainliest
Step-by-step explanation:
a) perimeter = 2(9+4.1) = 2(13.1) = 26.2 cm
b) perimeter = 3.6+3+7.2 =13.8 cm
PLEASE ANSWER ASASP FOR BRAINLEST!!!!!!!!!!!!!!
Answer:
48 units squared
Step-by-step explanation:
Which expresses a ratio in fraction form?
4:7
4 to 7
4/7
714
Answer:
I think it is 4/7 I might be wrong
You estimate that there will be 85 people at your party, but only 75 show up, what is the percent error of your estimate?
Answer:
Percentage error of your estimate = 13%
Step-by-step explanation:
Given
Approximate value = 85
Exact value = 75
To determine
Percentage error can be determined using the formula
Percentage Error = |Approximate Value − Exact Value| / |Exact Value| × 100%
= |85 − 75| / |75| × 100%
= 10 / 75 × 100%
= 0.1333 × 100%
= 13%
Therefore, percentage error of your estimate = 13%
Answer:
i got Observed Value as 10 and True Value as 11. someone tell me if i was wrong
2. How many terms are there in the expression: 3a + 6
Answer: 2
Step-by-step explanation: That expression is a binomial in any case the terms in a polynomial are separated by a plus or minus sign (+,-) so you can determine the number of terms by counting how many number or variable are being separated (ex: 3a+a-1 would have 3 terms and be a trinomial)
Please help me with this question I am really confused
Step-by-step explanation:
The answer is consistent
A recipe uses 1 1/4 cups of milk to make 10 servings if the same amount of milk is used for each serving how many servings can be made using 1 gallon of milk?
I WILL GIVE BRAINLIEST TO WHOEVER ANSWERS THE QUESTION PLEASE HELP
Answer:
128 servings
Step-by-step explanation:
5/4 cups of milk for 10 servings is equal to 1/8 cup per 1 serving
there are 16 cups in a gallon
let 'n' = # servings in a gallon
so 1/8 : 1 is 16 : n
1/8n = 16
n = 16(8)
n = 128
Anand knows from experience that if he does not review a new vocabulary word that he has learned, that
he has a 70% chance of forgetting it each day. Let D be the number of days Anand goes without reviewing
a word until he forgets it.
Find the probability that it takes Anand 4 or more days to forget the word.
You may round your answer to the nearest hundredth.
P(D > 4) =
Answer:
0.031
Step-by-step explanation:
1-0.973 = 0.027 ≈ 0.03
Use the calculator to find the value of x for the equation: × + 3.2=6.3
Answer:
x = 3.1
Step-by-step explanation:
Subtract 6.3 - 3.2 to find the value of x. You get 3.1.
Hope it helps!
P(AB)fxufucufgcidgfyzyfgx
Answer:
????????????????xhrhrhdhehdhzh
Answer:
??????????????????????????????????????????????????????????????????????????///////
Step-by-step explanation:
Pls help ASAP I’ll brainlest
Answer:
x=-0.26
Step-by-step explanation:
Four times the difference of a number cubed and six
Step-by-step explanation:
4(n^3 - 6)
hope this helps
What expression is equivalent to (-18) - 64n ?
A -2 (9 - 32n)
B 2 (9 - 32n)
C 2 (9 + 32n)
D -2 (9 + 32n)
Answer:
D
Step-by-step explanation:
Distribute the -2 to the 9 to get -18 and then to the 32n giving you -64n
A building is 52 meters tall. The building next to it is 50.36 meters tall. What is the difference between the heights of the buildings?
Answer:
1.64 meters
Step-by-step explanation:
Subtract 52 - 50.36 to find the difference between the heights. You get 1.64 meters.
Hope it helps!
5
7
−
2
+
7
=
1
1
1
Answer:
Step-by-step explanation:
57-2=55
55+7=62
it does not equal 111
How have you seen racism, protest, conflict, dehumanization play out in our current world?
paragraph plz
Answer:
i have seen a lot of racist people. let me tell you something that happened the other day when i was on here i found this kid posting racist things and calling blacks ugly. and he then started being mean to my friends and every year we celebrate black history month for rights rights and this is a good thing to do cause we all matter.#black lives matter
Step-by-step explanation:
The price of a food it should be four times the price of the ingredients used in making the item. If the cost of ingredients used in making a taco is 1.5 dollars, what should be the pricw of the taco?
Answer:
6 dollars
Step-by-step explanation:
If the price of a food is four times the price of the cost of the ingredients, then if the taco's ingredients cost 1.5 dollars, all we have to do is multiply 1.5 by 4, to get the answer, 6 dollars.
PLEASE HELPP! WORTH 21 POINTS AND I WILL MARK BRAINLIEST!!!
Answer:
8 pizz an chick 6
Step-by-step explanation: