Answer:
8n=15+1
8n=18
divide both sides by 8
n=2 A
Samples of size 60 are drawn from a large population known to have a mean of 78 and a standard deviation of 12. What proportion of these samples would we expect to have a mean greater than 80?
a
0.566
b
0.098
c
Almost none
d
0.434
e
0.901
Answer: 0.098
Step-by-step explanation: First you’ll need to find the sample distribution mean and standard deviation (which is 78 and 1.55). Then you plug it into calculator using normal approximation cause n is large: normalcdf(80,100,78,1.55)
As, 0.098 proportion of these samples would, we expect to have a mean greater than 80. Thus, option (C) is correct.
What is the population?As the population is defined, as a group of groupings with a common characteristic. In data point, a population is the pool of individuals from which a statistical sample is drawn for a study. As we see, different countries have different populations.
As here the μ = 78, σ = 1.5492 and x = 80
We need to compute P(X >= 80). The corresponding z-value is calculated using Central Limit Theorem
z = (x - μ)/σ
z = (80 - 78)/1.5492 = 1.29
Therefore,
P(X >= 80) = P(z <= (80 - 78)/1.5492)
= P(z >= 1.29)
= 1 - 0.902 = 0.098
Therefore, The right option (B) is correct
Learn more about populations here:
https://brainly.com/question/27991860
#SPJ2
5(x + 8) + x + y, given that x = 3 and y = 30
Answer:88
Step-by-step explanation:
Given, x=3 & y=30
So, 5(3+8)+3+30 = 5(11)+3+30 = 88
Answer: 88
Step-by-step explanation:
5(3+8)+3+30
5 x 11 + 33
55+33
=88
how do you solve 3 divided by x -1 = x + 1
Answer:
multiply (x-1) to both sides and then subtract three from both sides
3 = (x-1)(x+1)
3 = (x^2 -1)
0 = x^2 - 4
(x-2)(x+2) = 0
x = 2
x = -2
Step-by-step explanation:
find the measure for angle A
Step-by-step explanation:
x+46+x+66+90= 180
2x + 205= 180
2x = -25
x = - 12.5
A = x+46= -12.5+46= 33.5°
A= 33.5°
Jackson has scores of 80, 90, 83, and 81 on four Math quizzes. What is the score he needs on the next quiz to achieve an average above 85?
The range for the set of data represented by the following box-and-whisker plot is 8.
Answer:
TrueStep-by-step explanation:
The range is the difference between the lowest and the highest values of the set:
19 - 11 = 8The answer is TRUE
Answer:
true
Step-by-step explanation:
Joel spent $28 for an Internet data service
and
pays $14.50 per month. He spent 24 50 to join
an online movie streaming site and bays $13.25
per month. Write an expression to represent
Joel's total cost for both memberships after
m months
Answer: 42.50m + 37.75
Step-by-step explanation:
28+14.50m = 42.50m
24.50+13.25m = 37.75m
So the answer is, 42.50m + 37.75m
Hurry, it’s a test!!! Plz!
Raj estimated the sum of 214.73 and 9.6 by rounding each number to the nearest whole.
What was Raj's estimate and what is the actual sum of the numbers?
Enter your answers in the boxes.
Raj estimated the sum to be [ ]
The actual sum is [ ]
Answer:
estimate 215 answer 10
Step-by-step explanation:
E = MV^2 ÷ 2 + mgh, If M=20, h=15, E=4900, g=9.8. Find V
Answer:
V = 14 m/s
Step-by-step explanation:
[tex]E = MV^2 ÷ 2 + mgh \\ \\ 4900 = 20V^2 ÷ 2 + 20 \times 9.8 \times 15 \\ \\ 4900 = 10V^2 + 2,940\\ \\ 4900 - 2940 = 10V^2 \\ \\ 1960 = 10V^2 \\ \\ V^2 = \frac{1960}{10} \\ \\ V^2 = 196 \\ \\ V = \sqrt{196} \\ \\ V = 14 \: m {s}^{ - 1} [/tex]
Me han descontado 10 euros en unos pantalones que estaban rebajados un 20 porciento .¿cuantos costaban los pantalones ?¿cuanto ha pagado por ellos ?
Answer:
los pantalones costaban 50 euros, y ha pagado 40 euros
Jim rides the bus to and from school each day. A one-way trip is 8.12 kilometers. How many kilometers does he travel in 3 days?
Answer:
48.72 km in 3 days.
Step-by-step explanation:
Given that,
A one-way trip is 8.12 kilometers.
We need to find the distance he travel in 3 days.
The distance traveled by Jim in one day to the bus and from school = 2(8.12) = 16.24 km
Distance traveled in 3 days = 3(16.24)
= 48.72 km
Hence, he will cover 48.72 km in 3 days.
You purchase five municipal bonds on the first of the year. The current market value price is [tex]101\frac{1}{4}[/tex]. The commission charge is $8 per bond. What is the cost of purchasing these bonds?
a.$5546.25
b.$5102.50
c.$5062.50
d.$546.25
Answer:
B $5102.50
Step-by-step explanation:
answer on edge :)
Answer:
its b.
Step-by-step explanation:
Jess make a big kettle of rice and beans.He used 1 1/2 cup of beans he used 4 cups times as much rice how many cup of rice did Jess use
1.5(4) = 6
jess used 6 cups of rice
What is the value of x?
Answer:
x = 22
Step-by-step explanation:
hope I helped!!
PLS HELP 30 PTS!!!Use the coordinate plane to help you identify the length of each leg then use the Pythagorean Theorem to find the length of CD
Type your answer in the box.
Note: Type in only numeric part of the answer. Round your answer to the nearest hundredth.
Example: 12.70
Answer:
it says 15 points not 30
Step-by-step explanation:
Answer:
10.30
Step-by-step explanation:
Pythagorean Theorem is [tex]a^{2}[/tex] + [tex]b^{2}[/tex] = [tex]c^{2}[/tex]. The short leg(a) is 5 units long and the long leg(b) is 9 units long. CD is the hypotenuse, the longest side (c).
[tex]5^{2}[/tex] +[tex]9^{2}[/tex] =[tex]c^{2}[/tex]
25+81=[tex]c^{2}[/tex]
106=[tex]c^{2}[/tex]
[tex]\sqrt{106}[/tex] = [tex]\sqrt{c^{2} }[/tex]
10.29563014 = c
Rounded to the nearest hundredth, 10.30
To check this is correct, the hypotenuse is the longest side, and 10.30 is longer than 5 and 9.
Write a proportion for brainliest
Answer:
B) [tex]\frac{WV}{VY} =\frac{VX}{XY}[/tex]
Step-by-step explanation:
The triangle VXY and triangle VWY are similar because they are both right triangles. Option B shows the correct proportions based off of this. Line WV is similar to line VX and line VY is similar to line XY.
I hope it helps and is correct!
PLSSSSS HELP MEEEE PLSSSSSSS
Thelma and Louise ordered take-out from Belle Taco. Thelma ordered 2 tacos and 1 burrito and paid $3.79. Louise ordered 2 burritos and 1 taco and paid $4.58..
Find the cost for 1 of each of these items.
Answer:56
Step-by-step explanation:
!$(7(8
An airplane is flying at a constant speed. The airplane descends 450 meters in 9 seconds. Write the speed of the airplane as an integer.
Answer: Speed = 50meters/ second
Writing as an integer becomes + 50meters/ second 0R 50meters/ second
Step-by-step explanation:
Speed is given as = Distance / Time
distance covered by Airplane = 450 meters
Time = 9 seconds
Therefore, Speed = 450/ 9 = 50 meters/second
The highest point in Chicago is 735 feet above sea level. You can represent that numerically using .
Answer:
+735 feets
Step-by-step explanation:
Points or position above sea level are denoted with positive elevation values while points or positions below sea level are denoted by negative values. The sea level position itself could be viewed as a midpoint such as the position of 0 on a number line ; where distances to the right are positive and distances to the left are negative.
Hence, a point which is said to be 735 feets above sea level would have an equivalent numeric representation of +735 feets
Which of the following statements is NOT a property of parallelograms?
Opposite angles are congruent.
Opposite sides are parallel.
Parallelograms have 4 straight sides.
All sides are parallel.
Answer:its that all sides are parallell
Step-by-step explanation:
because it has two sets of parrallel sides all of them are not paralell
Answer:
All sides are parallel.
Step-by-step explanation:
shapes can't even be made if all the sides are parallel. The angles need to be added up to 360 degrees. There won't even be angles if all the lines are parallel. The opposite sides have to be parallel.
Square root of 9 + square root of 64?
Answer:
11...................
Answer:
11
Step-by-step explanation:
the sqare root of something is a number x its self ex.
3x3=9 so the sqare root of 9 is 3
and 8x8=64 so the sqare root of 64 is 8
so the simplified equation is 8+3=11
The value of an antique car is modeled by the function V\left(t\right)=10700\ \left(1.125\right)^t , where t is the number of years since 2005.
By what percent rate is the value of the car increasing per year?
a
125%
b
12.5%
c
1.125%
d
0.125%
Answer:
its c i think
Step-by-step explanation:
Calculate the result of operations, round the result to the tenth
5/2 + √2
Answer:
3.91421356237
nearest tenth
3.9
Step-by-step explanation:
Simplify the following
√2+√3/3√2-2√3
Answer:
a
Step-by-step explanation:
Daniel's school is selling tickets to a choral performance. On the first day of ticket sales the
school sold 1 adult ticket and 3 child tickets for a total of $39. The school took in $87 on the
second day by selling 5 adult tickets and 3 child tickets. Find the price of an adult ticket and the
price of a child ticket.
Answer:
Your answer.
Adult ticket = 12
Child ticket = 9
Thank you. And give my answer as Brainlist answer. Follow me for more
Step-by-step explanation:
The hospital is putting in a wheelchair ramp at one of its entrances. Only 6 feet of sidewalk can be covered by the ramp, and the ramp needs to reach 0.5 feet up the wall to reach the entrance. How long does the ramp need to be?
Answer:
3
Step-by-step explanation:
Susan Carver will purchase a home for $190000. She will use a down payment of 18% and finance the remaining portion at 4.2%, compounded monthly for 30 years
Answer:
$548053.69
Step-by-step explanation:
Cost of home = $190000
Down payment = 18%
Loan amount = (1 - 0.18) * 190000 = $155800
Rate, r = 4.2% = 0.042 ; compounded monthly for 30 years
Using the relation :
A = P(1 + r/n)^nt
n = number of compounding times per period = 12
A = 155800(1 + 0.042/12)^(12 * 30)
A = 155800(1.0035)^360
A = 155800 * 3.5176745
A = 548053.69
Final loan amount = $548053.69
Which expression below has the same value as 9⁶ ?
9 • 6
96
9 • 9 • 9 • 9 • 9 • 9
6 • 6 • 6 • 6 • 6 • 6 • 6 • 6 • 6
Answer:
9 • 9 • 9 • 9 • 9 • 9
Step-by-step explanation:
Given data
Value= 9⁶
The equivalent to the above expression is the dot product of
9*9*9*9*9*9
Hence the correct option is the third option
Answer:
9 to the sixth power is just 9 multipled by itself over and over again... 9*9*9*9*9*9
Step-by-step explanation:
Exercice 1:
Voici un programme de calcul :
Choisir un nombre
Multiplier ce nombre par 4
Ajouter 8
Multiplier le résultat par 2
1. Vérifier que si on choisit le nombre -0,5, ce programme donne 12 comme résultat final.
2. Le programme donne 34 comme résultat final, quel est le nombre choisi au départ ?
Dans la suite de l'exercice, on nomme x le nombre choisi au départ.
3. L'expression A = 2(4x + 8) donne le résultat du programme de calcul précédent pour un nombre x
donné.
On pose B = (4 + x)2 – x2
Prouver que les expressions A et B sont égales pour toutes les valeurs de x.
4. Pour chacune des affirmations suivantes, indiquer si elle est vraie ou fausse.
On rappelle que les réponses doivent être justifiées.
Affirmation 1: Ce programme donne un résultat positif pour toutes les valeurs de x.
Affirmation 2 : Si le nombre x choisi est un nombre entier, le résultat obtenu est un multiple de 8.
find the side of the square whose perimeter 20 m
