Answers
Answer: The first one
Step-by-step explanation:
If you take a look at the light pink squares, you can count three on the top and three on the bottom. Therefore, when looking at it from the top, you’ll see the first one.
I hope you found my answer helpful! If you did, give it a five-star rating and a thanks! I would really appreciate it!
Even a brainliest if you feel like it! ;)
Answer:
the first image will b da answer
Step-by-step explanation:
happy to help ya :)
Related Questions
What is the value of y?
Answers
Answer:
d. 54
Step-by-step explanation:
Answer:
D.
Step-by-step explanation:
y=(180º-72º)/2
y=108º/2
y=54º
D.
Twenty students from Sherman High School were accepted at Wallaby University. Of those students, eight were offered military scholarships and 12 were not. Mr. Dory believes Wallaby University may be accepting students with lower SAT scores if they have a military scholarship. The newly accepted student SAT scores are shown here.
Military scholarship: 850, 925, 980, 1080, 1200, 1220, 1240, 1300
No military scholarship: 820, 850, 980, 1010, 1020, 1080, 1100, 1120, 1120, 1200, 1220, 1330
Part A: Do these data provide convincing evidence of a difference in SAT scores between students with and without a military scholarship? Carry out an appropriate test at the α = 0.05 significance level.
Part B: Create and interpret a 95% confidence interval for the difference in SAT scores between students with and without a military scholarship.
Answers
Answer:
Step-by-step explanation:
For military scholarship,
Mean, x1 = (850 + 925 + 980 + 1080 + 1200 + 1220 + 1240 + 1300)/8
x1 = 1099.375
Standard deviation = √(summation(x - mean)²/n
n1 = 8
Summation(x - mean)² = (850 - 1099.375)^2 + (925 - 1099.375)^2 + (980 - 1099.375)^2 + (1080 - 1099.375)^2 + (1200 - 1099.375)^2 + (1220 - 1099.375)^2 + (1240 - 1099.375)^2 + (1300 - 1099.375)^2 = 191921.875
Standard deviation, s1 = √(191921.875/8
s1 = 154.89
For no military scholarship,
Mean, x2 = (820 + 850 + 980 + 1010 + 1020 + 1080 + 1100 + 1120 + 1120 + 1200 + 1220 + 1330)/12
x2 = 1070.83
Standard deviation = √(summation(x - mean)²/n
n2 = 12
Summation(x - mean)² = (820 - 1070.83)^2 + (850 - 1070.83)^2 + (980 - 1070.83)^2 + (1010 - 1070.83)^2 + (1020 - 1070.83)^2 + (1080 - 1070.83)^2 + (1100 - 1070.83)^2 + (1120 - 1070.83)^2 + (1120 - 1070.83)^2 + (1200 - 1070.83)^2 + (1220 - 1070.83)^2 + (1330 - 1070.83)^2 = 238091.6668
Standard deviation, s2 = =√(238091.6668/12
s2 = 140.86
Part A)
This is a test of 2 independent groups. The population standard deviations are not known. Let μ1 be the mean score of students with military scholarship and μ2 be the mean score of students without military scholarship.
The random variable is μ1 - μ2 = difference in the mean score between students with military scholarship and without military scholarship
We would set up the hypothesis.
The null hypothesis is
H0 : μ1 = μ2 H0 : μ1 - μ2 = 0
The alternative hypothesis is
H1 : μ1 ≠ μ2 H1 : μ1 - μ2 ≠ 0
This is a two tailed test
Since sample standard deviation is known, we would determine the test statistic by using the t test. The formula is
(x1 - x2)/√(s1²/n1 + s2²/n2)
t = (1099.375 - 1070.83)/√(154.89²/8 + 140.86²/12)
t = 0.42
The formula for determining the degree of freedom is
df = [s1²/n1 + s2²/n2]²/(1/n1 - 1)(s1²/n1)² + (1/n2 - 1)(s2²/n2)²
df = [154.89²/8 + 140.86²/12]²/[(1/8 - 1)(154.89²/8)² + (1/12 - 1)(140.86²/12)²] = 21644133.914878543/1533280.3458504018
df = 14
We would determine the probability value from the t test calculator. It becomes
p value = 0.68
Since alpha, 0.05 < than the p value, 0.68, then we would fail to reject the null hypothesis. Therefore, at a significance level of 5%, these data do not provide convincing evidence of a difference in SAT scores between students with and without a military scholarship
Part B)
The formula for determining the confidence interval for the difference of two population means is expressed as
Confidence interval = (x1 - x2) ± z√(s²/n1 + s2²/n2)
For a 95% confidence interval, we would determine the z score from the t distribution table because the number of samples are small
Degree of freedom =
(n1 - 1) + (n2 - 1) = (8 - 1) + (12 - 1) = 18
z = 2.101
x1 - x2 = 1099.375 - 1070.83 = 28.545
Margin of error = 2.101√(154.89²/8 + 140.86²/12) = 143.3
The 95% confidence interval is 28.545 ± 143.3
Please answer this correctly
Answers
Answer:
Its absolutely cone , it has one triangle face seen from front , and a circular base
Answer:
Rectangular pyramid had a triangular face .
Suppose you have $200,000 in a bank term account. You earn 5% interest per annum from his account
Answers
Answer:
$190,000
Step-by-step explanation:
discount = x
original price = $200,000
discount% = 5%
x/200,000 = 5/100
x · 100 = 5 · 200,000
100x = 1,000,000
100x/100 = 1,000,000/100
x = 10,000
Sale price: $200,000 - $10,000 = $190,000
Which of the following choices is the length of AB if A (-3, -2) and B (5, -4)?
Answers
Answer:
8.7
Step-by-step explanation:
distance formula
Answer:
\sqrt{68}
Step-by-step explanation:
Using the distance formula, you can find that the distance between these two points is:
[tex]\sqrt{(5-(-3))^2+(-2-(-4))^2}=\\\\\sqrt{(5+3)^2(-2+4)^2}=\\\\\sqrt{8^2+2^2}=\sqrt{64+4}=\\\\\boxed{\sqrt{68}}[/tex]
This is based on the Pythagorean Theorem, since you can imagine making a right triangle between these two points and the distance between them being the hypotenuse. Hope this helps!
Dan got 45 out of 72 correct in his test.
What fraction of the marks did he get wrong?
Give your answer in its simplest form.
Answers
Answer:
3/8
Step-by-step explanation:
45/72=5/8
(5/8)+x=72/72
x=1-(5/8)
x=3/8
You measure 50 textbooks' weights, and find they have a mean weight of 37 ounces. Assume the population standard deviation is 5.2 ounces. Based on this, construct a 90% confidence interval for the true population mean textbook weight. Give your answers as decimals, to two places
Answers
Answer:
90% confidence interval for the true population mean textbook weight is [35.79 ounces , 38.21 ounces].
Step-by-step explanation:
We are given that you measure 50 textbooks' weights, and find they have a mean weight of 37 ounces.
Assume the population standard deviation is 5.2 ounces.
Firstly, the Pivotal quantity for 90% confidence interval for the population mean is given by;
P.Q. = [tex]\frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }[/tex] ~ N(0,1)
where, [tex]\bar X[/tex] = sample mean weight = 37 ounces
[tex]\sigma[/tex] = population standard deviation = 5.2 ounces
n = sample of textbooks = 50
[tex]\mu[/tex] = true population mean textbook weight
Here for constructing 90% confidence interval we have used One-sample z test statistics as we know about population standard deviation.
So, 90% confidence interval for the population mean, [tex]\mu[/tex] is ;
P(-1.645 < N(0,1) < 1.645) = 0.90 {As the critical value of z at 5%
level of significance are -1.645 & 1.645}
P(-1.645 < [tex]\frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }[/tex] < 1.645) = 0.90
P( [tex]-1.645 \times {\frac{\sigma}{\sqrt{n} } }[/tex] < [tex]{\bar X-\mu}[/tex] < [tex]1.645 \times {\frac{\sigma}{\sqrt{n} } }[/tex] ) = 0.90
P( [tex]\bar X -1.645 \times {\frac{\sigma}{\sqrt{n} } }[/tex] < [tex]\mu[/tex] < [tex]\bar X +1.645 \times {\frac{\sigma}{\sqrt{n} } }[/tex] ) = 0.90
90% confidence interval for [tex]\mu[/tex] = [ [tex]\bar X -1.645 \times {\frac{\sigma}{\sqrt{n} } }[/tex] , [tex]\bar X +1.645 \times {\frac{\sigma}{\sqrt{n} } }[/tex] ]
= [ [tex]37-1.645 \times {\frac{5.2}{\sqrt{50} } }[/tex] , [tex]37+1.645 \times {\frac{5.2}{\sqrt{50} } }[/tex] ]
= [35.79 , 38.21]
Therefore, 90% confidence interval for the true population mean textbook weight is [35.79 ounces , 38.21 ounces].
Of all the companies on the New York Stock Exchange, profits are normally distributed with a mean of $6.54 million and a standard deviation of $10.45 million. In a random sample of 73 companies from the NYSE, what is the probability that the mean profit for the sample was between 0 million and 5.1 million?
Answers
Answer:
11.90% probability that the mean profit for the sample was between 0 million and 5.1 million
Step-by-step explanation:
To solve this question, we need to understand the normal probability distribution and the central limit theorem.
Normal probability distribution
Problems of normally distributed samples are solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
Central Limit Theorem
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
In this question, we have that:
[tex]\mu = 6.54, \sigma = 10.45, n = 73, s = \frac{10.45}{\sqrt{73}} = 1.2231[/tex]
In a random sample of 73 companies from the NYSE, what is the probability that the mean profit for the sample was between 0 million and 5.1 million?
This is the pvalue of Z when X = 5.1 subtracted by the pvalue of Z when X = 0. So
X = 5.1
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
By the Central Limit Theorem
[tex]Z = \frac{X - \mu}{s}[/tex]
[tex]Z = \frac{5.1 - 6.54}{1.2231}[/tex]
[tex]Z = -1.18[/tex]
[tex]Z = -1.18[/tex] has a pvalue of 0.1190
X = 0
[tex]Z = \frac{X - \mu}{s}[/tex]
[tex]Z = \frac{0 - 6.54}{1.2231}[/tex]
[tex]Z = -5.35[/tex]
[tex]Z = -5.35[/tex] has a pvalue of 0
0.1190 - 0 = 0.1190
11.90% probability that the mean profit for the sample was between 0 million and 5.1 million
An urn contains 3 red and 7 black balls. Players and withdraw balls from the urn consecutively until a red ball is selected. Find the probability that selects the red ball. ( draws the first ball, then and so on. There is no replacement of the balls drawn.)
Answers
Correct question:
An urn contains 3 red and 7 black balls. Players A and B withdraw balls from the urn consecutively until a red ball is selected. Find the probability that A selects the red ball. (A draws the first ball, then B, and so on. There is no replacement of the balls drawn).
Answer:
The probability that A selects the red ball is 58.33 %
Step-by-step explanation:
A selects the red ball if the first red ball is drawn 1st, 3rd, 5th or 7th
1st selection: 9C2
3rd selection: 7C2
5th selection: 5C2
7th selection: 3C2
9C2 = (9!) / (7!2!) = 36
7C2 = (7!) / (5!2!) = 21
5C2 = (5!) / (3!2!) = 10
3C2 = (3!) / (2!) = 3
sum of all the possible events = 36 + 21 + 10 + 3 = 70
Total possible outcome of selecting the red ball = 10C3
10C3 = (10!) / (7!3!)
= 120
The probability that A selects the red ball is sum of all the possible events divided by the total possible outcome.
P( A selects the red ball) = 70 / 120
= 0.5833
= 58.33 %
consider the quadratic equation y^2-y=6. what is the error with the solution below?
Answers
Answer:
y=-2 or y=3
Step-by-step explanation:
Y^2-y-6=0
y^2-3y+2y-6=0
y(y-3)+2(y-3)=0
(y+2)(y-3)=0
y=-2 or y=3
hope it helps
Brainliest to whoever gets this correct Which of the following is not a polynomial identity?
Answers
Answer:
Hi there!
The correct answer is C.
Step-by-step explanation:
A polynomial identity are equations that are true for all possible values of the variable. For example, x²+2x+1=(x+1)² is an identity.
Find the inverse of the following function.
f(t) = , for > 0
148) = , for 1 > 0
o 1-100) = , for > 0
of-13)
25, for I > 0
o 5-10
252 , for r > 0
Answers
Answer:
f(t) =, for>0
-148)=, for 1>0
0 1- 100)=,for>0
of +13)
-25,for1>0
0-5-10
-252, for r>0.
The height of a saw tooth in inches after time in seconds is represented by the function y = 0.4sin (15x + 1.5) - 0.2 for t > 0. Without graphing the function, determine the maximum height that the saw tooth reaches.
Answers
Answer:
0.2 Inches
Step-by-step explanation:
Given the height of the saw tooth represented by the function
[tex]y = 0.4sin (15x + 1.5) - 0.2$ for $t > 0.[/tex]
Comparing with the general form of a trigonometric equation
[tex]y = A sin(B(x + C)) + D[/tex]
Where:
A =AmplitudePeriod =[tex]2\pi/B[/tex]C=Phase Shift D=Vertical ShiftAmplitude, A=0.4
Vertical Shift (Midline),D = - 0.2
The maximum and minimum height of the sinusoidal function is given by:
[Min, Max]=[D-A, D+A]
=[-0.2-0.4, -0.2+0.4]
=[-0.6,0,2]
The maximum height that the sawtooth reaches is 0.2 inches.
Rule multiply the last number by 3 then subtract 2
2 4 10 _ _
Answers
Answer:
[tex]28[/tex], [tex]82[/tex]
Step-by-step explanation:
[tex]10 \times 3 -2=28\\28 \times 3 - 2 = 82[/tex]
If AB=x and x=4, then the transitive property states
1. AB+4=2x
2. X=4
3. AB+x=4
4. AB=4
Answers
Answer:
5
Step-by-step explanation:
i took the test
The transitive property states AB = 4.
What is transitive property?The transitive property of equality states that the first number is also equal to the third number if two numbers are equal and the second number is equal to the third number. In other words, if a is equal to b and b is equal to c, then a is equal to c. One of the many mathematical properties of equality is the transitive property.
Given AB = x and x = 4
Acc. to transitive property,
if a = b, b = c Then c = a.
so AB = 4
Hence option D is correct, AB = 4.
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What is the value of x in the equation 1.5(x + 4) - 3 = 4.5(x - 2)?
3
4
Ο Ο Ο Ο
5
9
Answers
Answer:
The answer is 4
Step-by-step explanation:
1.5(4+4)-3= 9
4.5(4-2)=9
9=9
Answer:
[tex]x=4[/tex]
Explanation:
[tex]1.5x+6+-3=4.5x+-9\\1.5x+3=4.5x-9\\-3x+3=-9\\-3x=-12\\x=4[/tex]
find the circumference
(3.14)(24)
Answers
Answer:
75.36unit^2
Step-by-step explanation:
Looking at the expression in the question, it is synonymous to the
equation for the circumference of a circle
π×d =3.14×24=75.36unit^2
Please answer this correctly
Answers
72+72+36= 144+36= 180
Answer:
Area of the figure = 176 m²
Step-by-step explanation:
Area of Rectangle = Length × Width
Dividing the whole figure
Rectangle 1:
6 × 18 = 108 m²
Rectangle 2 :
10 × 6 = 60 m²
Rectangle 3:
2 × 4 = 8 m²
Adding All
Area of the figure = 108 + 60 + 8
Area of the figure = 176 m²
Solve the inequality 6h−5(h−1)≤7h−11 and write the solution in interval notation. Use improper fractions if necessary.
Answers
Answer:
[tex]h \geq 2\frac{2}[3}[/tex]
Step-by-step explanation:
We solve the inequality similarly to how we would solve an equalitu.
[tex]6h - 5(h-1) \leq 7h - 11[/tex]
[tex]6h - 5h + 5 \leq 7h - 11[/tex]
[tex]h - 7h \leq -11 - 5/[/tex]
[tex]-6h \leq -16[/tex]
Multiplying everything by -1
[tex]6h \geq 16[/tex]
Simplifying by 2
[tex]3h \geq 8[/tex]
[tex]h \geq \frac{8}{3}[/tex]
8 divided by 3 is 2 with rest two. So as a improper fraction, the answer is:
[tex]h \geq 2\frac{2}[3}[/tex]
Answer:
[8,
3
Step-by-step explanation:
Can someone plz help me solved this problem! I’m giving you 10 points! I need help plz help me! Will mark you as brainiest!
Answers
Answer:
domain: (-∞,∞)
range [-3,∞)
Step-by-step explanation:
The domain is the values that x can take
X can be any value so the domain is all real numbers
The range is the values that y can take
The minimum value is -3
The range is y ≥ -3
George is curious. He has been told that the average body temperature of humans is 98.6 degrees Fahrenheit. However, he believes it is much lower than that. He randomly selects 60 people from those passing by him on a street and takes their temperature. The average temperature of these 60 people is 98.2 degrees Fahrenheit. The standard deviation, sigma Subscript x,is known to be 0.62 degrees Fahrenheit. The p-value is less than 0.0001. What is the correct conclusion?
Answers
Answer:
[tex]p_v =P(t_{(59)}>t_{calc})<0.0001[/tex]
Since the p value is a very low value we have enough evidence to reject the null hypothesis in favor of the alternative hypothesis and we can conclude that the true mean for this case is significantly different from 98.6 F at any usual significance level used.
Step-by-step explanation:
Information given
[tex]\bar X=98.2[/tex] represent the sample mean
[tex]\sigma=0.62[/tex] represent the population standard deviation
[tex]n=60[/tex] sample size
[tex]\mu_o =98.6[/tex] represent the value that we want to test
t would represent the statistic
[tex]p_v[/tex] represent the p value
System of hypothesis
We want to verify if the true mean is equal to 98.6 F, the system of hypothesis would be:
Null hypothesis:[tex]\mu = 98.6[/tex]
Alternative hypothesis:[tex]\mu \neq 98.6[/tex]
The statistic is given by:
[tex]t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}[/tex] (1)
The degrees of freedom, on this case:
[tex]df=n-1=60-1=59[/tex]
The p value would be given by:
[tex]p_v =P(t_{(59)}>t_{calc})<0.0001[/tex]
Since the p value is a very low value we have enough evidence to reject the null hypothesis in favor of the alternative hypothesis and we can conclude that the true mean for this case is significantly different from 98.6 F at any usual significance level used.
find the least number divisible by 15,20,24,32and 36
Answers
Step-by-step explanation:
I think the first number should be 16
Then these numbers are divisible by 4
Diego's doctor has recommended that his daily diet should include 3 vegetables, 2 fruits, and 2 whole grains. At the grocery store, Diego has a choice of 9 vegetables, 9 fruits, and 11 whole grains. In how many ways can he get his daily requirements if he doesn't like to eat 2 servings of the same thing in 1 day
Answers
Answer:
166320 ways
Step-by-step explanation:
In this case we must calculate the number of combinations for each option, and then multiply the result of each one, like this:
Number of ways you can choose 3 vegetables out of 9 available:
nCr = n! / (r! * (n-r)!)
in this case n = 9, r = 3, replacing:
9C3 = 9! / (3! * (9-3)!) = 84
Number of ways you can choose 2 fruits out of 9 available:
9C2 = 9! / (2! * (9-2)!) = 36
Number of ways you can choose 2 whole grains out of 11 available:
11C2 = 11! / (2! * (11-2)!) = 55
So according to the rule of the products how many ways you can choose the daily diet
84*36*55 = 166320
A phone company charges 12 cents per minute of call. If Gerardo made a call that took 75 minutes using this plan, how much did his call cost?
Answers
Answer:
900 cents, 9 dollars
Step-by-step explanation:
9 is .03% of what number?
Answers
Answer:
30,000
Step-by-step explanation:
We know that divide the percentage by 100. After that you get the decimal thing then all you do is multiply the number and you get your answer that is 30,000.
Answer: 30,000
Please mark brainliest
Hope this helps.
If s(x) = 2 – x2 and t(x) = 3x, which value is equivalent to (s circle t) (negative 7)?
Answers
Answer:
153
Step-by-step explanation:
What is the range of the function?
all real numbers less than or equal to 4
all real numbers less than or equal to -3
all real numbers greater than or equal to 4
all real numbers greater than or equal to -3
10X
Answers
Answer:
1. all real numbers less than or equal to 4 = </= 4.
Answer = YES!
2. all real numbers less than or equal to -3 = </= -3.
Answer = YES!
3. all real numbers greater than or equal to 4 = >/= 4
Answer = YES!
4. all real numbers greater than or equal to -3 = >/= -3
Answer = NO!
Step-by-step explanation:
1. all real numbers less than or equal to 4 = </= 4.
1 + 1 = 2
1 + 2 = 3
2 + 2 = 4
2. all real numbers less than or equal to -3 = </= -3.
1 - 1 = 0
1 - 2 = -1
1 - 3 = -2
1 - 4 = -3
3. all real numbers greater than or equal to 4
1 + 1 = 2
1 + 2 = 3
1 + 3 = 4
1 + 4 = 5
4. all real numbers greater than or equal to -3
1 - 1 = 0
1 - 2 = -1
1 - 3 = -2
1 - 4 = -3
Answer:
The range is all real numbers less than or equal to 4
Step-by-step explanation:
took the test on edge
r(x−s)=sx+t what does x equal
Answers
Answer:
x = (rs + t)/(r-s)
Step-by-step explanation:
r(x - s) = sx + t
rx - rs = sx + t
rx - sx = rs + t
x(r - s) = rs + t
x = (rs + t)/(r-s)
The solution for x is x = (t + rs)/(r - s).
What is an equation?A pair of algebraic equations with the equal symbol (=) in the center and the same value are referred to as an equation.
We can begin by simplifying the given equation:
First, solve the parenthesis,
r(x - s) = sx + t
Simplify, the equation, we get,
rx - rs = sx + t
rx - sx = t + rs
Take the like terms to one side, we get,
x(r - s) = t + rs
Now, solve for x, we get,
x = (t + rs)/(r - s)
Therefore, x is equal to (t + rs)/(r - s).
To learn more about the equation;
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Which expression is equivalent to StartRoot negative 80 EndRoot? Negative 4 StartRoot 5 EndRoot Negative 4 StartRoot 5 EndRoot i 4 StartRoot 5 EndRoot i 4 StartRoot 5 EndRoot
or
Which expression is equivalent to √-80
A. -4√5
B. -4√5i
C. 4√5i
D. 4√5
Answers
Answer:
C. 4√5i
Step-by-step explanation:
on edge
please vote brainliest i have never gotten it before
Tara has 1 3/5
yards of fabric. She needs
2 1/2
times this amount to make a shopping bag. How much fabric does Tara need to make the bag?
Answers
Answer:
amount of fabric to make the bag = 4 yards
Step-by-step explanation:
Tara has 1 3/5 yards of fabric . She needs extra 2 1/2 times the amount she have to make a shopping bag. The amount of fabric she needs to make the bag can be calculated as follows.
1 3/5 yards = 8/5 yards of fabrics
What she actually needs to make a shopping bag is two and half the amount she has . Mathematically, it can be express
2 1/2 × 8/5
Let us change 2 1/2 to improper fraction
amount of fabric to make the bag = 5/2 × 8/5
amount of fabric to make the bag = 40/10
amount of fabric to make the bag = 4 yards
