Respuesta:
(2945.411; 3054.589)
Explicación paso a paso:
Dado ;
Tamaño de la muestra, n = 50
Media, xbar = 3000
Desviación estándar, s = 200
Nivel de confianza, Zcrítico al 95% = 1,96
El intervalo de confianza se define como:
Xbar ± margen de error
Margen de error = Zcrítico * s / sqrt (n)
Margen de error = 1,96 * 200 / sqrt (50)
Margen de error = 54.589
Límite inferior = (3000 - 54.589) = 2945.411
Límite superior = (3000 + 54.589) = 3054.589
(2945.411; 3054.589)
YOU GET THIRTEEN POINTS Choose the number sentence whose product is 3.62
.A. 1.2 x 1.8 B.3.5 x 4 C.4 x 0.905 D.0.815 x 4
Answer:
C.) 4 x 0.905
Step-by-step explanation:
4 x 0.905 = 3.62
Thus, The number sentence whose product is 3.62 is 4 x 0.905
-TheUnknownScientist
Pl help it’s for a grade
Please help I'm in fourth and I do not understand this at all :((
Answer:
Rico Spent $6.50 on each car.
Step-by-step explanation:If you divided 52 by 8 you get 6.5 in money it would be $6.50.
My answer is reasonable because my estimate ÷ 10 = $6.50
Answer:
The answers are: 6.5$ , divided by, and 5$
Step-by-step explanation:
In order to figure out the price of each toy car, we must divide 52/8 (the total price of the toy cars divided by the number of the cars) which equals to 6.5, meaning that each toy car costs 6.5$, since they all have the same price. We know that this is a reasonable price because say we were to estimate, meaning we'd take a guess without doing any calculations. Let's say we paid 50$ in total, which is easily divided by 10, if we were to round up both numbers, we'd get 5$ each. That's close to the true answer, making it reasonable to take such a guess.
A plastic puzzle in the shape of a triangular prism has bases that are equilateral triangles with side
lengths of 4 inches and a height of 3.5 inches. The height of the prism is 6 inches. Find the volume of
the prism.
In a class, everyone studies French or German, but not both languages. One third of the girls and the same number of boys study German. Twice as many boys as girls study French. Which of the total number of boys and girls in my class
Answer:
32
Step-by-step explanation:
Let the number of girls in the class be 3. Then the number of girls who study German is , as is
the number of boys who study German. So the number of girls who study French is 2 and the
number of boys who study French is 2 × 2 = 4.
Therefore the total number of boys and girls in the class is + + 2 + 4 = 8 and hence is a
multiple of 8. Of the options, only 32 is divisible by 8.
There are 300 students in the 9th grade and each student is assigned a locker. The 300 students start down the hall one at a time. The first student opens every locker. The second student closes all the lockers that are multiples of 2. The third student changes the lockers that are multiples of 3 (which means if a locker is closed, they open it. If the locker is open, they close it.) The fourth student changes all the lockers that are multiples of 4. This continues until the 300th student changes the 300th locker. Then, the principal walks down the hall, and changes all the lockers that are prime numbers. At the end, how many lockers will be closed?
Answer:
1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225, 256, 289
Step-by-step explanation:
The pattern will lead to the answer being all the perfect squares from 1 to 300.
Ashley has 5 liters of punch. Megan has 4,700 milliliters of punch. Who has more punch?
A packing box measures 36 centimeters by 14 centimeters by 20 centimeters. What is the volume of the box?
Answer:
1000
Step-by-step explanation:
first you times 36 by 14 witch equals 54. Then do 54 x 20 = 1000 the 4 is gone because of the zero. So your answer should be 1000
Determine whether the conclusion is valid. Explain. You want to determine the number of students in your school who have visited a science museum. You survey 50 students at random. Twenty have visited a science museum, and thirty have not. So, you conclude that 40% of the students in your school have visited a science museum.
Answer: The conclusion is valid
Step-by-step explanation:
Number of students surveyed = 50
Number of students who visited a science museum = 20
Number of students who haven't visited a science museum = 30
Percentage of student that have visited a Science museum:
= 20/50 × 100
= 40%
The conclusion is valid based on the calculation.
What value of x makes the following equation true? ( 8th grade math )
Answer: 4
Step-by-step explanation:
2(x+7) = x + 18
2x + 14 = x + 18
x + 14 = 18
x = 4
Answer:
C. 4
Step-by-step explanation:
[tex]2(x + 7) = x + 18[/tex]
[tex]2(x+7) = 2x + 2×7[/tex]
[tex]=2x+14[/tex]
[tex]2x + 14 = x + 18[/tex]
[tex]2x + 14-x=18[/tex]
[tex]2x - x = 18 - 14[/tex]
[tex]x=18-14[/tex]
[tex]x = 4[/tex]
Please help.
Is algebra.
PLEASE HELP NO LINKS OR FILES.
I don't want links.
Answer:
question 12 is answer B
question 13 is -8x^3
Step-by-step explanation:
exponent rule [tex]\frac{a^m}{a^n} = a^(^m^-^n^)[/tex]
What is a simpler form of (2x²-3x+1)(x-3)?
Answer:
Step-by-step explanation:
(2x² - 3x + 1 )(x - 3) = (2x² - 3x + 1)*x + (2x² - 3x + 1)*(-3)
= 2x²*x - 3x*x + 1*x + 2x²*(-3) - 3x*(-3) + 1*(-3)
= 2x³ - 3x² + x - 6x² + 9x - 3
= 2x³ - 3x² - 6x² + x + 9x - 3 {Combine like terms}
= 2x³ - 9x² + 10x - 3
A quadrilateral in the coordinate plane has vertices (3, 2), (3,-4), (5,4), and (5,-2). What is the area, in square units, of the quadrilateral?
Answer:
4 square units
Step-by-step explanation:
the distance between (3, -4) and (5, -4) is 2, and the distance between (3, -2) and (5, -2) is also 2. since its a quadrilateral do 2x2 and you get 4.
given x=1/3y+5/3 and xy-x=2y+1
Solve for x and y simultaneously
Determine if the 2 triangles are congruent.
A) ASA
B) HL
C) Not enough information
D) SAS
Answer:
(B)
Step-by-step explanation:
please click the heart and rate excellent and brainleist to ❤☺️☻♨️♨️☻☺️❤
Diragio Lawn Care cuts lawns every week. Each lawn uses 34 of a tank of gas when it is cut (on average). How much gas is used if 10 lawns are cut in one week? Choose two answers that represent the solution.
Answer:
7.5 tank oil will be used
Step-by-step explanation:
Amount of gas used to cut one lawn (on an average) = 3/4 of a tak
Given ,
In a week , ten such lawns are cut
Hence, Total amount of gas used
= 3/4* 10
= 7.5 tank
PLEASE HELP ME!!! ITS DUE TODAY!!!!!!! the file is down below!!!!!
Answer:
the first phot is correct becuase thh way she sets it up shows the right way to set up a number line.
Step-by-step explanation:
Please help me with the correct answer
Answer:
Literally do
a^2+b^2=c^2
not that difficult man
Find the value of b.
bº
44°
Answer:
46
Step-by-step explanation:
nice to help you.that angle is a 90-degree angle - 44
WILL GIVE BRAINLIEST What is the slope of the table shown?
3
5
1
2
Answer:
2
Step-by-step explanation:
Slope is the change in y over the change in x
m = ( y2-y1)/(x2-x1)
= ( 7-1)/(3-0)
= 6/3
=2
What is
as a percent?
20%
35%
6%
60%
Answer:
60%
Step-by-step explanation:
Answer:
60%
Step-by-step explanation:
How are chords and secants alike? How are they different?
They are alike because they both intersect the circle
They are different because chord
and secants are
:: once
.: twice
: three times
:: four times
:: lines
:: rays
: segment
Check
? Help
2
3
4
5
6
-
NEXT >
Type here to search
Answer:
twice
Step-by-step explanation:
??
PLease help with this
Answer:
huh
Step-by-step explanation:
find the volume figure below
A. 45 mm3
B. 45 mm2
C. 3,375 mm2
D. 3,375 mm3
Step-by-step explanation:
its either C or D and yup sure
Answer:
3,375 mm³
Step-by-step explanation:
To find the volume of a cube or rectangular prism, multiply the length, width, and height of the figure. In this case, the figure is a cube, so all the side lengths are equal. So, all you have to do is multiply 15 three times.
15 · 15 · 15 = 3,375
The answer is D, 3,375 mm³. Use the cubed symbol to show volume :) Good luck
What is the equation for direct variation?
Answer:
y=kx
Step-by-step explanation:
For this example it would be [tex]y=\frac{72}{2} x\\[/tex] or y=36x
I need help with this . Please show workings.
1.A worker has painted ⅔ of a house. What percentage of the house has not been painted?
2. A manager salary of 600 is increased by 12½% .What is his new salary?
Answer:
1. 33.3333(repeating)%
2. $675
Step-by-step explanation:
2/3 = 0.6666(repeating)7
1 - 2/3 = 0.33333333333333333333333333333333333333333333333333333
2. 600 * 1.12½ (divide fractions to quickly convert them to decimals) = 675
Express 9.08 as a fraction in its simplest form
Answer:
[tex]9\frac{2}{25}[/tex]
Step-by-step explanation:
Which item is NOT printed on the bottom of a check?
a
check number
b
routing number
c
account number
d
date
Answer: d. Date
Step-by-step explanation:
Some of the information printed on the bottom of a check include the check number which is typically a security measure that is used in the identification of payment so as to prevent fraud.
The routing number also informs the bank where the funds for the check can be found.
The account number informs the person that collects the check about the account that the money is coming from.
We should note that the date is at the top of the check and one has to fill it himself or herself before giving the check to the recipient.
plsssss helpñ i would appreciate it!!!
Doen's short is 4 times larger than helen's but costs half as much. Deon's shirt costs $9.35.How much is helen's short?
Answer:
4.68
Step-by-step explanation:
D=4h large, 1/2h cost
D= 1/2*9.35=cost
D= 1/2*9.35=4.68