Answer:
4th one
Step-by-step explanation:
In geometry, a unit cube is a cube whose each side is 1 unit long.
Answer:
4TH ONE
Step-by-step explanation:
at the end of dinner a restaurant had several dishes of quiche each with 2/6 size pieces of quiche. the chef was able to combine these pieces to make 2 whole quiches wuth no leftover. how many dushes did the chef combine
Answer:
6 dishes
Step-by-step explanation:
since he made 2 dishes and there is a two in the numerator, all we have to do is multiply by 6 to get 2 by itself
Determine whether the following statements are always true, sometimes true, or never true.
The sum of two positive integers is positive.
A
The sum of two negative integers is negative.
B
The difference between two positive integers is positive.
C
The difference between two negative integers is negative.
D
A positive integer minus a negative integer is negative.
E
Answer:
a= true
b=never
c=true
d=never
e=true
The state education commission wants to estimate the fraction of tenth grade students that have reading skills at or below the eighth grade level. In an earlier study, the population proportion was estimated to be 0.21. How large a sample would be required in order to estimate the fraction of tenth graders reading at or below the eighth grade level at the 90% confidence level with an error of at most 0.03
Answer:
A sample of 499 is needed.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.
[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
In which
z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].
The margin of error is given by:
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
In this question, we have that:
[tex]\pi = 0.21[/tex]
90% confidence level
So [tex]\alpha = 0.1[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.1}{2} = 0.95[/tex], so [tex]Z = 1.645[/tex].
How large a sample would be required in order to estimate the fraction of tenth graders reading at or below the eighth grade level at the 90% confidence level with an error of at most 0.03
We need a sample of n, which is found when [tex]M = 0.03[/tex]. So
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
[tex]0.03 = 1.645\sqrt{\frac{0.21*0.79}{n}}[/tex]
[tex]0.03\sqrt{n} = 1.645\sqrt{0.21*0.79}[/tex]
[tex]\sqrt{n} = \frac{1.645\sqrt{0.21*0.79}}{0.03}[/tex]
[tex](\sqrt{n})^2 = (\frac{1.645\sqrt{0.21*0.79}}{0.03})^2[/tex]
[tex]n = 498.81[/tex]
Rounding up
A sample of 499 is needed.
Find the solution of this system of equations. Separate the x- and y- with commas.
x = -6 + y
and
-7x + 9y = 8
Answer:
x = -23
y = -17
Step-by-step explanation:
[tex]x = - 6 + y \\ - 7x + 9y = 8 \\ \\ - 7( - 6 + y) + 9y = 8 \\ 42 - 7y + 9y = 8 \\ 2y = 8 - 42 \\ y = \frac{ - 34}{2} \\ y = - 17 \\ \\ x = - 6 + y \\ x = - 6 + ( - 17) \\ x = - 6 - 17 \\ x = - 23[/tex]
Answer:
Step-by-step explanation:
-7(-6 + y) + 9y = 8
42 - 7y + 9y = 8
2y + 42 = 8
2y = -34
y = -17
x = -6 - 17
x = -23
(-23, -17)
Compare using > (greater than) , = (equal) , or < (less than). 3 _____ -3 12 _____ 24 -12 _____ -24 5 _____ -5) 7.2 _____ 7.2 -7.5 _____ -7
PLEASE HELP WILL MARK BRAINLIEST!! THANK YOU SOO MUCH GOD BLESS YOU!!
Answer:
See below.
Step-by-step explanation:
3 > -3
12 < 24
-12 > -24
5 > -5
7.2 = 7.2
-7.5 < -7
x+5y=17
-4x+3y=24
how to solve this problem
Answer:
okay so x=-3, y=4
Step-by-step explanation:
based off the top of my head -3+5*4=17 and -4*-3=12 12+3*4=24
Answer:
x=-3 ,y=4
Step-by-step explanation:
x+5y=17------(i)
-4x+3y=24------(ii)
use substitution method
x+5y=17
make x subject of the formula
x=17-5y-----(iii)
substitute equation (iii) into equation (ii)
-4x+3y=24
-4(17-5y)+3y=24
-68+20y+3y=24
23y=24+68
23y=92
divide both sides by 23
y=92/23
y=4
substitute y in equation (iii)
x=17-5y
x=17-5(4)
x=17-20
x=-3
Click and drag like terms onto each other to simplify fully.
-5+4+4x+x+4
Bottles of sparkling water usually cost $1.69 each. This week they are on sale for 4 for $5. How much more did you pay THIS week
Answer:
You paid $3.31 more
Step-by-step explanation:
Taking $5 and subtracting it with 1.69 you get 3.31
Hope this helped have a great day
Answer:
The cost of 1 sparkling bottle in this week is less than last week, so we pay less this week. We pay $0.44 less this week. This week cost of 4 bottles is $5.
Help Me PLZZZZZZZZZZ.
Students in Mr. Hill’s class were asked how many TV shows they watched last weekend. The results are shown on the line plot. A line plot titled Amount of T V Watched. A number line goes from 0 to 7 and represents the number of T V Shows. There are 4 marks above 0, 2 marks above 1, 4 marks above 2, 3 marks above 3, 1 mark above 4, 2 marks above 5, 1 mark above 6, 3 marks above 7. Which statement about the number of TV shows watched is accurate? Half of the students watched fewer than two TV shows. More than half of the students watched three or more TV shows. Fewer than one-quarter of the students watched five or more TV shows. Half of the students watched fewer than two shows or more than five shows.
Answer:
i think it is b
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
Plz mark brainliest
For some reason i feel like im a black belt fighter and a martial arts master
Answer:
Good for you!
Step-by-step explanation:
look its you and your friends!
Answer:
I used to do martial arts ʕ•ᴥ•ʔ
Step-by-step explanation:
There are 6 belt colors: white belt, orange belt, blue belt, yellow belt, green belt, brown belt, and black belt. All belts besides the white belt can have dashes to indicate further progress. Black is the most powerful, showing the power of FIGHT ! Here is a summary of the different karate belts.
Write the fraction as a percent.
1/400
Answer:
0.25%
Step-by-step explanation:
Answer:
0.25%
Step-by-step explanation:
1/4 = 0.25
1/40 = 0.025
1/400 = 0.0025 = 0.25%
Answer: 0.25%
solve algebraic equations with variables on both sides of the equation
6x + 2 = 8
Answer:
x = 1
Step-by-step explanation:
First, you have to eliminate the "2," leaving it as, 6x=6.
Then divide, which will leave the equation to x=1.
What would be the slope of the line that passses through 4, 5 and 7, 6
A binary communication channel carries data as one of two sets of signals denoted by 0 (zero) and 1. Owing to noise, a transmitted 0 is sometimes received as a 1, and a transmitted 1 is sometimes received as a 0. For a given channel, it can be assumed that a transmitted 0 is correctly received with probability 0.95 and a transmitted 1 is correctly received with probability 0.75. Also, 70% of all messages are transmitted as a 0. If a signal is sent, determine the probability that a 1 was received.
Answer:
26% probability that a 1 was received.
Step-by-step explanation:
We have these following probabilities:
70% probability that a message is transmitted as a 0.
100 - 70 = 30% probability that a message is transmitted as a 1.
If a message is transmitted as a 0, 95% probability of being received as a 0 and 5% probability of being received as 1.
If a message is transmitted as a 1, 75% of being received as a 1 and 25% probability of being received as a 0.
If a signal is sent, determine the probability that a 1 was received.
5% of 70%(Sent 0, received 1) of 75% of 30%(sent 1 and received 1). So
[tex]p = 0.05*0.7 + 0.75*0.3 = 0.26[/tex]
26% probability that a 1 was received.
2/3 parts of the earth 's surface is covered with water.
(i) Express it in percent.
(II) How many percent is the continental part ?
Answer:
Water =2/3× 100%=200/3%=66.67%
So land will be 100% - 66.67%
=33.33
The Distributive Property
Use the Distributive Property to evaluate each expression.
1. 3(2+8)
3. -5(4-2)
5. 8(10-4)
Answer:
1. 30
2. -10
3. 48
Step-by-step explanation:
So for #1 I did:
3*2(6)+3*8(24) which equals 30
For #2 I did:
-5*4(-20)- -5*2(-10) which equals -10
For #3 I did:
8*10(80)-8*4(32) which equals 48
Also brainliest
Also sub to pewdiepie
The triangle shown below has an area of 75^2
Find the missing side.
Answer:
5
Step-by-step explanation:
use pythagorean theorum and 75 is area. base is 2 and height is 2. base/2 ^2 = 1
1^2 + 2^2 = 5
Auto spent 3/4 of the money he had saved on a new video game. If the video game cost $48, how much money did he have before he bought the game
Answer:
64
Step-by-step explanation:
The part of money he spent =3/4
Let the total money Otto has be 'x'.
Then according to the question, we have
3/4x = 48
Multiply 4 on both the sides, we get
3x = 48 X 4
Divide 3 on both the sides, we get
x = 48 X 4 / 3
x = 64!
BOOM!
A local television station for a city with a population of 500,000 recently conducted a poll where they invited viewers to call in and voice their support or opposition to a controversial referendum that was to be voted on in an upcoming election. Over 10,000 people responded, with 67% opposed to the referendum. The TV station announced that they are convinced that the referendum will be defeated in the election.
Select the answer below that indicates whether the TV station's announcement is valid or invalid, and why.
a. Valid, because 67% is far enough above 50% to predict a majority vote.
b. Invalid, because the sample may not be representative of the population.
c. Valid, because the sample size is large enough to represent the population.
d. Invalid, because the sample is too small given the size of the population.
Answer:
b. Invalid, because the sample may not be representative of the population.
Step-by-step explanation:
A sample of around 10% of the population is needed to be representative.
In this question:
We have a population of 500,000, and a sample of 10,000.
10,000/500,000 = 1/50 = 0.02 = 2% of the population, so not representative, and option b is correct.
1490 thousand help me get that number because I can't find them
Answer:
1,490,000
Step-by-step explanation:
Answer:
1490000?
Step-by-step explanation:
Show that each figure is the given type of quadrilateral. Show that BCDE is a rectangle
I need help
With this question ASAP PLS
an acting troupe is holding a performance in an arena they are selling child tickets for $2 and adult tickets for $4 the arena can hold at most 200 people and the troupe is hoping to make atleast $400 in ticket sales graph the inequalities
A radio station ordered hats and coffee mugs to give away as prizes. A total of 1,000 of these items were ordered, and 3 times as many coffee mugs were ordered as hats. In which equation does h represent the number of hats ordered?
Answer:
The options are not shown, so i will answer in a general way.
Let's define the variables:
h = number of hats
m = number of mugs.
We know that a total of 1000 items were ordered, then:
h + m = 1000
We also know that we have 3 times more mugs than hats, this can be written as:
m = 3*h
Now we have the system of equations:
h + m = 1000
m = 3*h
To solve these, we usually start by isolating one of the variables in one equation and then replace that in the other equation, but in this case, we already have m isolated in the second equation, then we can replace that in the first equation to get:
h + m = 1000
h + (3*h) = 1000
Now we can solve this equation for h, and find the number of hats ordered.
4*h = 1000
h = 1000/4 = 250
There were 250 hats ordered.
Need help ASAP
Write an algebraic expression to represent the verbal expressions
Answer:
4*x^2+5x
Explanation:
Identify the zeros of the graph of the function g(x).
Answer:
-4 and -2
Step-by-step explanation:
The function has the factors (x + 4) and (x + 2). By setting these both to 0, you will find the zeros of the function.
x + 4 = 0
x = -4
x + 2 = 0
x = -2
Therefore, the zeros of the function are -4 and -2.
Write the following number in scientific notation:
4, 332
4.332 x 10³
Step-by-step explanation:
hope it helps!
a certain componnt for newly developed electronic disel engine is considered to be defective if its diameter is less than 8.0 mm or greater than 10.5mm. the distribution of the diameters of these parts is known to be normal with mean of 9.0 mm and standard deviation of 1.5 mm.if a component is randomly selected what is probability that it will be defective?
Answer:
The probability is 0.58992 or simply 0.59
Step-by-step explanation:
We start by getting the z-scores of the diameter
we have this as follows;
Mathematically;
z-score = (x-mean)/SD
mean = 9.0 mm
SD = 1.5 mm
For 8.00 mm, we have
z = (8-9)/1.5 = -0.67
For 10.5 mm, we have
z = (10.5-9)/1.5 = 1
So the probability we want to calculate is;
P( 1 < x < -0.67)
we can calculate this using the standard normal distribution table
We have this as ;
P( x < -0.67) - P( x > 1) = 0.58992
Josh deposited 1500 into a savings account at his nearby bank. The bank’s interest rate is 3%. He does not deposit or withdraw any money for the next 4 years. How much interest will he gain after the fourth year?
Answer:
188.27
Step-by-step explanation:
divide the starting number (1500) by 100 to get 1% then times by 3 to get the new number for tje start of tje next year.
After 1st- 1545
after 2nd year = 1591.35
After 3rd = 1639.1005
After 4th= 1688.273515
what he gained is 1688.273515-1500= 188.273515.
now round to 2 decimals = 188.27
