Answer:
A. associative property of addition
Step-by-step explanation:
Associative because you can add or multiply those regardless of how the numbers are grouped.
I hope this helped and have a good rest of your day!
Answer:
Associative Property of Addition
Step-by-step explanation:
This property states that the sum of 3 or more numbers stays the same, no matter how they are grouped.
Hope this helped. Have an awesome day!
Can somebody please help with these two questions?
Answer:
#3: x is approximately 0.37, -5.37, #4: x is approximately 4.19, -1.19
Step-by-step explanation:
You can solve using the quadratic equation or by solving with the perfect square
[tex]\frac{-b+/-\sqrt{b^{2}-4ac} }{2a}[/tex] = [tex]x^{2}+5x-2=0\\ \frac{-5+/-\sqrt{5^{2}-4(1)(-2) }}{2(1)}[/tex]
x is approximately 0.37, -5.37
The equation of a circle is given below.
(x + 7) + (y + 8)= 4/9
What is its center?
What is its radius?
If necessary, round your answer to two decimal places,
units
Show Calculator
Answer: center (-7,-8) radius (2/3)
Step-by-step explanation:
Which description matches finding the volume of the solid?
Answer:
Cylinder + Rectangular Prism
Step-by-step explanation:
On the sides we can see 2 half-cylinders. 2 half-cylinders make up 1 whole cylinder. In between the half-cylinders, a rectangular prism is squashed.
Think of this as a sandwich, the 2 buns are half cylinders, and the meat is the prism.
Therefore the answer is a cylinder and a rectangular prism.
How large is the largest button in the jar ? , is this an statistical question ?
A researcher planned a study in which a crucial step was offering participants a food reward. It was important that three food rewards were equal in appeal. Thus, a pilot study was designed in which participants were asked which of the rewards they preferred. The observed frequencies are as follows:
Of the 60 participants, 16 preferred cupcakes, 26 preferred candy bars, and 18 favored dried apricots.
1. The appropriate statistical test for this problem is (be specific): ________.
2. What are the expected frequencies for this question?
3. What is the cutoff on the comparison distribution (step 3)?
4. What is the correct calculation for chi-square (step 4)?
Answer:
Step-by-step explanation:
Hello!
A pilot study was conducted to test if three food rewards are equally appealing to the participants.
Of 60 participants surveyed:
16 preferred cupcakes (CC)
26 preferred candy bars (CB)
18 preferred dried apricots (DA)
If the three types of food are equally appealing for the participants, you'd expect that their proportions will be equal: P(CC)=P(CB)=P(DA)= 1/3
1.
The objective of this pilot study is to test if the observed frequencies follow a theoretical model/ distribution. To analyze this, you have to apply a Chi Square Goodness to Fit test. [tex]X^2=sum \frac{(O_i-E_i)^2}{E_i} ~~X^2_{k-1}[/tex] Where k= number of categories of the variable.
For this example the statistical hypotheses are:
H₀: P(CC)=P(CB)=P(DA)= 1/3
H₁: At least one of the proportions isn't equal to the others.
2.
To calculate the expected frequencies for each category you have to use the formula: [tex]E_i= n* P_i[/tex] where Pi represents the theoretical proportion for the i category, stated in the null hypothesis.
[tex]E_{CC}= n* P(CC)= 60*1/3= 20[/tex]
[tex]E_{CB}= n*P(CB)= 60*1/3= 20[/tex]
[tex]E_{DA}= n* P(DA)= 60* 1/3= 20[/tex]
3.
The cutoff or critical value indicates the beginning of the rejection region for the hypothesis test. For the Chi-Square tests, the rejection region is always one-tailed to the right, meaning that you'll reject the null hypothesis if the value of the statistic is big. For the goodness to fit test you have k-1 degrees of freedom, so the critical value will be:
Assuming α: 0.05
[tex]X^2_{k-1;1-\alpha /2}= X^2_{2;0.975}= 7.378[/tex]
The rejection region is then X²₂ ≥ 7.378
4.
[tex]X^2_{H_0}= \frac{(O_{CC}-E_{CC})^2}{E_{CC}} + \frac{(O_{CB}-E_{CB})^2}{E_{CB}} + \frac{(O_{DA}-E_{DA})^2}{E_{DA}} = \frac{(16-20)^2}{20} +\frac{(26-20)^2}{20} +\frac{(18-20)^2}{20}= \frac{14}{5}= 2.8[/tex]
I hope this helps!
Find the volume of the cylinder. Round your answer to the nearest tenth.
Please help!
Answer:1236.4 ft^3
Step-by-step explanation:
height=h=7ft
Diameter=15ft
Radius=r=15/2=7.5ft
Volume of cylinder=π x r^2 x h
Volume of cylinder=3.14 x (7.5)^2 x 7
Volume of cylinder=3.14x7.5x7.5x7
Volume of cylinder=1236.375
Volume of cylinder=1236.4 ft^3
if a sample of 57 swimmers is taken from a population of 135 swimmers, the population mean is the mean of how many swimmers' times?
Answer:
135
Step-by-step explanation:
A P E X
A parallelogram has a length of 15cm and a height of 7.5cm. Calculate it’s area.
Step by step please
Answer:
112.5
Step-by-step explanation:
To find the area of a parallelogram, you can simply multiply the length of the base by the height. In this case, this is 15*7.5=112.5 square centimeters. Hope this helps!
Answer:
Step-by-step explanation:
Whats the Doubled Recipe ?
4 ½ ripe tomatoes
⅝ red onion
⅖ garlic cloves
3 jalapenos
⅓ cupe fresh cilantro
3 tablespoons fresh lime juice
2 ½ teaspoons ground cumin
2 ¾ teaspoons
1 ½ teaspoons salt
15 ounces crushed tomatoes ( 1 can)
4.5 ounces diced green childes (1 can)
Answer:
9 ripe tomatoes
1 1/4 red onion
4/5 garlic cloves
6 jalapeños
2/3 cup fresh cilantro
6 teaspoons ground cumin
5 1/2 teaspoons
3 teaspoons salt
30 ounces crushed tomato (2 cans)
9 ounces dices green chilies (2 cans)
40/50 to a simpel fraction
Answer:
4/5
Step-by-step explanation:
just divide by 10 since that's the largest number that both numbers can equally be divisible by
Answer:
4/5 because 40/50 simplified is 4/5 bc you knock off the zeros for question like that
Step-by-step explanation:
Tyler simplified the expression x Superscript negative 3 Baseline y Superscript negative 9. His procedure is shown below.
x Superscript negative 3 Baseline y Superscript negative 9 = StartFraction 1 Over x cubed EndFraction times StartFraction 1 Over y Superscript negative 9 EndFraction = StartFraction 1 Over x cubed y Superscript negative 9 EndFraction
What is Tyler’s error?
Answer:
[tex]y^{-9}\neq \dfrac{1}{y^{-9}}[/tex]
Step-by-step explanation:
Tyler simplified the expression: [tex]x^{-3}y^{-9}[/tex] as shown below:
[tex]x^{-3}y^{-9}=\dfrac{1}{x^3}X \dfrac{1}{y^{-9}}=\dfrac{1}{x^3y^{-9}}[/tex]
We notice that in Tyler's work:
[tex]y^{-9}= \dfrac{1}{y^{-9}}[/tex]
Whereas, the correct form would have been:
[tex]y^{-9}= \dfrac{1}{y^{9}}[/tex]
Making our solution:
[tex]x^{-3}y^{-9}=\dfrac{1}{x^3}X \dfrac{1}{y^{9}}=\dfrac{1}{x^3y^{9}}[/tex]
In general, how is the graph of g(x) = | [tex]x - h[/tex] | + [tex]k[/tex] related to the graph of f(x) = | x |? GIVING BRAINLIEST!!
Answer:
The graph of g(x) = |x - h| + k is a translation of h units horizontally and k units vertically of the graph of f(x) = | x |.
Hope this helps.
Answer:
H units horizontally, k units vertically
Step-by-step explanation:
help me as soon as possible please
Answer:
65.45 units^3
Step-by-step explanation:
5/2 (5 divided by 2) 2.5, to get the radius,
then using the volume equation you get 65.449846-bla bla, rounding: 65.45
-Hope this helps! ❤️
Michael has a substantial student debt, but he recently got a new job, which came with a signing bonus. He calculates that with his new
job, he can put aside a fixed amount of money every month to pay off his debt. He also puts the entirety of his bonus towards paying off
his debt. He constructs the expression 36, 700 - (5,000+ 500m)to represent the size of his debt after m months. Which number
describes the value of his signing bonus?
I need help plz
Answer:
Michael needs to save $63.40, approximately.Step-by-step explanation:
The given expression is
[tex]36,700 - (5,000 + 500m)=0[/tex]
Where [tex]m[/tex] is months.
We need to solve for the variable.
[tex]36,700-5,000-500m=0\\31,700=500m\\m=\frac{31700}{500} \approx 63.4[/tex]
Therefore, Michael needs to save $63.40, approximately.
Answer:
The number representing describing the value of his signing bonus = 5,000.
Step-by-step explanation:
Total debt = $36,700
He pays $500 every month from his monthly salaries, since m = months.
The $5,000 is the amount of his signing bonus, which puts entirely towards paying off his debt.
It is like the fixed payment. While the 500m is the variable payment per month.
So, at the end of any number of months, you can easily calculate the remaining debt using the expression, 36,700 - (5,000 + 500m)
On Tuesday, the bottles of iced tea filled in a plant were supposed to contain an average of 20 ounces of iced tea. Quality control inspectors sampled 50 bottles at random from the days production. These bottles contained an average of 19.6 ounces of iced tea
Identify the population
Identify the parameter
Identify the sample
Identify the statistic
Answer:
i) The bottles of iced tea filled in a plant is the Population
ii) The Average of Population μ = 20 is called Parameter
iii) The sample size 'n' = 50
iv) The mean of the sample 'x⁻ = 19.6 ounces
Step-by-step explanation:-
Population:-
The total number of observations which we are concerned , whether this number be finite or infinite is called Population.
In Given data
The bottles of iced tea filled in a plant is the Population
Parameter:-
The statistical constants of the Population namely mean and variance are usually refereed to as Parameters.
The Average of Population μ = 20 is called Parameter
Sample:-
A sample is a subset of population
given data sample size n=50 bottles at random from the days of production
Statistics
The sample mean x⁻ and variance S² is called statistics
Given data
These bottles contained an average of 19.6 ounces of iced tea
x⁻ = 19.6 ounces
Do you remember the difference between a row and a column
in Math?
The average mark of c
andidates in an aptitude test was 128.5 with a standard deviation of
8.2. Three scores extracted from the test are; 148, 102, 152. What is the average of the
extracted scores that are extreme values (outliers)?
Answer:
The average of the extracted scores that are extreme values (outliers) = 102
Step-by-step explanation:
With the logical assumption that the population size is large enough, for a normal distribution,
68% of the data lies within 1 standard deviation of the mean.
95% of the data lies between 2 standard deviations of the mean.
99.7% of the data lies within 3 standard deviations of the mean.
So, the outliers for a normal distribution are usually beyond 3 standard deviations of the mean.
The mean = 128.5
Standard deviation = 8.2
The range of scores within 3 standard deviations of the mean is obtainable thus
(Mean ± 3standard deviations)
3 × standard deviations = 3 × 8.2 = 24.6
(128.5 ± 24.6) = (103.9, 153.1)
The 3 extracted scores are 148, 102 and 152. The only extreme value of these 3 extracted scores is 102. The two other scores are within the range of 3 standard deviations of the mean.
Hence, the average of the extracted scores that are extreme values (outliers) = 102
Hope this Helps!!!
IL GIVE YOU BRAINLIST !! * have to get it right * An equation for the line graphed is
Answer:
y = 3/2x+3
Step-by-step explanation:
The y intercept is 3. That is where it crosses the y axis
The slope is
m= (y2-y1)/(x2-x1) and we have points(0,3) and (-2,0)
= (0-3)/(-2,0)
=-3/-2
=3/2
Using the slope intercept form of a line
y = mx +b where m is the slope and b is the y intercept
y = 3/2x+3
Simplify the remaining expression completely x^6y^4/xy^2
Answer: x^5y^2
Step-by-step explanation:
Answer:
the answer is a on edge 2020
Step-by-step explanation:
I just took the test
On a team, 8 girls and 5 boys scored a total of 94 points. The difference between the number of points scored by the 8 girls and the number of points scored by the 5 boys is 34. Each girl scored the same number of points and each boy scored the same number of points. Find the number of points scored by each girl and each boy
Answer:
g = 8 points
b = 6 points
Step-by-step explanation:
If each girl scores g points, and each boy scores b points, then:
8g + 5b = 94
8g − 5b = 34
Add the equations together.
16g = 128
g = 8
Solve for b in either equation.
8(8) + 5b = 94
5b = 30
b = 6
What is the area of a rectangle with sides length of 5/12 feet and 2/3 feet
Answer:
The answer is 10/36 or if you want to simplify, 5/18
Step-by-step explanation:
To solve the area of a rectangle, you need to multiply the sides with each other, so 5/12 x 2/3 is 10/36 (unsimplified) . You multiply the numerators and then the denominators and simplify.
A class of 64 students was given 320 book how many will each students take home
Each student will take=320/64
=5
So the answer is 5.
Hope it will be helpful to you...
✧◝(⁰▿⁰)◜✧
Solve for and in the following simultaneous equations below; 5x−4y=8 and 2x+y=11.
Answer:
x=4 and y=3
Step-by-step explanation:
put one of the equations in slope form and solve
Answer:x=4 y=3
Step-by-step explanation:
5x-4y=8.............(1)
2x+y=11................(11)
From (11) y=11-2x
Substitute y=11-2x in 5x-4y=8
5x-4y=8
5x-4(11-2x)=8
Open bracket
5x-44+8x=8
Collect like terms
5x+8x=8+44
13x=52
Divide both sides by 13
13x/13=52/13
x=4
Substitute x=4 in 2x+y=11
2(4)+y=11
8+y=11
Collect like terms
y=11-8
y=3
Math Help!!! Can someone solve this?? I will give you Brainliest!!!!!!
Answer:first one is false, second is true and third is true
Step-by-step explanation:
I need help if you answer it ill make you the brainliest!!!
2x+5= 17
what is the value of X?
HELP!! What are the values of a and b?
What is the slope of a line perpendicular to a line with slope -8
Answer:
1/8
Step-by-step explanation:
You would need to get the reciprocal of negative eight and then change the sign so you would get 1/8
Please help me with this math question. Thank You so much
Answer:
1/32
Step-by-step explanation:
1/4 divided by 8 equals 1/32 using calculator. No explanation really... Brainliest?
Answer:
1) 1/32
Step-by-step explanation:
1/4 = 0.25
0.25/8 = 0.03125
turn 0.03125 into a fraction and get = 1/32
32. Mr. Fernández packed 31 red apples and 41 green apples into a box for a customer. He
packed 8 boxes like this. Mr. Fernández used this equation to find x, the number of apples
he packed into all the boxes.
x = (31 + 41)8
How many apples did Mr. Fernández pack into the boxes?
A. 576
B. 568
C. 80
D. 10,168
which is the equation of an asymptote of the hyperbola whose equation is (x-2)^2/4 - (y-1)^2/36 =1
Answer:C
Took the test
Step-by-step explanation:
The equations of an asymptote of the hyperbola are y = 3x - 5 and y = -3x - 5.
What are the standard form of hyperbola and asymptotes?The standard form of a hyperbola is:
(x-h)²/a² - (y-k)²/b² = 1
The general equation of the asymptotes for a hyperbola centered at (h,k) with semi-axes a and b is given by:
(y - k) = ± (b/a)(x - h)
To find the equations of the asymptotes of the hyperbola with equation:
(x-2)²/2² - (y-1)²/6² = 1
Plugging in the values, we get:
(y - 1) = ± (6/2)(x - 2)
Simplifying:
y - 1 = ± 3(x - 2)
y = ± 3x - 5
Therefore, the equations of the asymptotes for the given hyperbola are y = 3x - 5 and y = -3x - 5.
To know more about hyperbola check:
https://brainly.com/question/15702563
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