Part A
For Todd's class, we have this given info:
mu = 70.6 = population mean of math scoressigma = 11.9 = population standard deviation of math scoresCompute the z score for x = 74.6
z = (x-mu)/sigma
z = (74.6 - 70.6)/(11.9)
z = 0.34 approximately
Side note: Convention usually has z scores rounded to two decimal places. If your teacher instructs otherwise, then go with those instructions of course.
Answer: 0.34======================================================
Part B
For Garret's English class, we have:
mu = 63.7sigma = 8.6Compute the z score for x = 68.8
z = (x-mu)/sigma
z = (68.8 - 63.7)/(8.6)
z = 0.59 approximately
Answer: 0.59======================================================
Part C
Garret has the higher z score, which means that Garret did relatively better to his classmates compared to Todd's performance (in relation to his classmates). The z score is the distance, in units of standard deviation, the score is from the mean. Positive z values are above the mean, while negative z values are below the mean.
Answer: Garret did relatively betterSelect the correct answer from each drop-down menu.
The total area of the three triangles is
square units.
The area of the figure is
square units.
The total area of the three triangles is square units is 36 and the area of the figure is square units is 60.
What is the triangle?The triangle can be defined as a three-sided polygon in geometry, and it consists of three vertices and three edges. The sum of all the angles inside the triangle is 180°.
From the figure, the area of triangles can be calculated using the:
Area = (1/2)height×base length
Area of three triangle = 1/2(4×6) + 1/2(6×4) + 1/2(4×6)
Area of three triangle = 1/2(24×3) = 36 square units
Area of the figure = area of three triangle + area of the rectangle
= 36 + 6×4
= 60 square units
Thus, the total area of the three triangles is square units is 36 and the area of the figure is square units is 60.
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If the time is between 8:00 a.m. and 3:00 p.m., then the bank is open.
If the bank is open, then people may make withdrawals or deposits.
Therefore, if …
Therefore, if the time is between 8:00 a.m. and 3:00 p.m., then people may make withdrawals or deposits at the bank.
This conclusion is based on the given premises that the bank is open during the time between 8:00 a.m. and 3:00 p.m. and that when the bank is open, people may make withdrawals or deposits. By combining these premises with modus ponens (a valid form of deductive reasoning), we can infer that if the time is within the bank's operating hours, then people may make withdrawals or deposits at the bank.
Choose the graph of the inequality - 3 > ..
Choose 1 answers
5
.4
-3
2
1
0
1
2
3
4
5
2
1
0
1
2
3
4
5
CO
-3
2.
0
1
3
4
5
Answer: 5
Step-by-step explanation: 5 isn’t equal to all
Write y = 5(x - 8)^2 + 4 in standard form
Answer:
\(y=5x^2-80x+324\)
Step-by-step explanation:
Ty joins a gym. He pays a $50 membership fee and $12 per month.
a.) Write an equation to model the situation
b.) what does the independent variable represent? (x)
c.) What does the dependent variable represent? (y)
d. How many months has he been a member of the gym if the total charge is $110?
Answer:
A. y = 12x + 50
B. x is the monthly price
C. y is the total amount
D. 5 months
Step-by-step explanation:
110 - 50 = 60
60/12 = 5
A 2-yard roll of waxed paper coats $4.02. What is the price per foot
Answer: $0.67.
Step-by-step explanation:
To find the price per foot of the waxed paper, we need to convert the price from yards to feet and then divide the total cost by the length in feet.
Given:
Length of waxed paper roll = 2 yards
Cost of waxed paper roll = $4.02
1 yard is equal to 3 feet. Therefore, the length of the waxed paper roll in feet is:
Length in feet = 2 yards * 3 feet/yard = 6 feet
To find the price per foot, we divide the total cost by the length in feet:
Price per foot = Cost / Length in feet
Price per foot = $4.02 / 6 feet
Dividing gives us:
Price per foot = $0.67 per foot
Therefore, the price per foot of the waxed paper is $0.67.
A gym franchise was considering a television marketing campaign to increase its
membership. The franchise's market researchers wanted to get a better sense of
the television and exercise habits of the gym's target demographic. To begin, the
market researchers surveyed some of the current members about how many
hours they had spent watching television and exercising last month.
Using the survey responses, the researchers compared the number of hours of
television watched, x, to the number of hours of exercise, y, for each member.
Hours of television Hours of exercise
3
38
14
27
21
36
28
15
43
30
Round your answer to the nearest thousandth.
r =
The number of hours of television watched and the number of hours of exercise, correct to three decimal places is 3.940.
What is a decimal?A decimal is any number expressed in base-10 notation, which includes a decimal point and the numbers 0 through 9. Decimals are used to represent fractions, numbers that are not whole numbers, and numbers that are exceptionally large or tiny.
To calculate the correlation coefficient between hours of television watched and hours of exercise, we will use the formula
r = (∑xy − (∑x)(∑y) / n) /\(\sqrt{((2x-x/n)(2y-2/n))}\)
where x is the number of hours of television watched and y is the number of hours of exercise.
Given the data provided, we have
x = 3, 14, 21, 28, 43
y = 38, 27, 36, 15, 30
Therefore,
∑x = 3 + 14 + 21 + 28 + 43 = 109
∑y = 38 + 27 + 36 + 15 + 30 = 156
∑xy = (3)(38) + (14)(27) + (21)(36) + (28)(15) + (43)(30) = 1291
∑x2 = 32 + 142 + 212 + 282 + 432 = 4552
∑y2 = 382 + 272 + 362 + 152 + 302 = 4644
n = 5 (number of members surveyed)
Substituting these values into the formula, we get
r = (1291 − (109)(156) / 5) /\(\sqrt{(4552-(109)2/5)(4644-(156)2/5)))}\)
r = (1291 − 17784 / 5) /\(\sqrt{(4552-10902/5)(4644-24336/5)}\)
r = (-16493 / 5) / \(\sqrt{(3456)(2036)}\)
r = -3298.6 / \(\sqrt{695936}\)
r = -3298.6 / 835.2
r = -3.94
Rounded to the nearest thousandth, r = -3.940.
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Regarding Probability which of the following is correct
Regarding probability, the option with the correct statement is presented as follows;
When two events A and B are independent, the joint probability of the events can be found by multiplying the probability of the individual events.
What is the probability of an event?The probability of an event is the ratio of the number of times the event occurs to the number of all possible events.
The probability of the union of mutually exclusive events is zero, therefore, we get;
P(A ∩ B) = 0
The option; when events A and B are mutually exclusive, then P(A ∩ B) = P(A) + P(B) is incorrectThe union of two events consists of the possible outcomes that are in A or in set B or in set A ∩ B
Therefore, the option;The union of events A and B consists of all outcomes in the sample space that are contained in both event A and event B is incorrect
The joint probability of independent events A and B can be obtained from the product of the probability of event A and event B as follows;
P(A and B) = P(A) × P(B)
The correct option is therefore;
When two events A and B are independent, the joint probability of the events can be found by multiplying the probabilities of the individual events is correctThe probability of the union of two events is found from the sum of the probabilities of the two events minus the probability of the intersection of the two events, which can be presented as follows;
P(A ∪ B) = P(A) + P(B) - P(A ∩ B)
P(A) + P(B) ≤ 2
P(A ∩ B) ≤ 1
The larger the value of P(A) and P(B) the larger the value of P(A ∩ B), such that we get; P(A ∪ B) ≤ 1
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in the diagram, AB=18. find AC and BC
Answer:
b
Step-by-step explanation:
In a 30-60-90 right triangle, the hypotenuse is twice the length of the short leg.
The hypotenuse is AB and is 18.
The short leg is BC and is 9.
The only choice with BC = 9 is b.
Answer: b
Suppose that you and a friend are playing cards and decide to make a bet. If you draw two face cards, where a face card is a Jack, a Queen, or a King, in succession from a standard deck of 52 cards replacing the first card, you win $50. Otherwise, you pay your friend $20. What is the expected value of your bet? Round your answer to the nearest cent, if necessary.
The expected value of your bet will be the negative $16.27 that mean loses.
What is the binomial distribution?Binomial distributions consist of n independent Bernoulli trials.
The expected value will be
E(X) = np
Suppose that you and a friend are playing cards and decide to make a bet.
If you draw two face cards, where a face card is a Jack, a Queen, or a King, in succession from a standard deck of 52 cards replacing the first card, you win $50.
Otherwise, you pay your friend $20.
Then the probability of winning will be
p = (12 / 52)(12 / 52)
p = 9 / 169
Then the probability of loosing will be
q = 1 – p
q = 1 – 9/169
q = 160 / 169
Then the expected value will be
E(x) = (9/169) x 50 + (160/169) x (-20)
E(x) = -$16.27
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2 2.3.5 Quiz: Using Properties to Add and Subtract Rational Numbers
Question 4 of 5
Which expression would be easier to simplify if you used the associative
property to change the grouping?
A. 0.85+[0.15+(-1/3)
B. 1+[3/4+(-1/4]
C. [(-1/3)+(-2/3)+(-4/5)
D. (160+40)+27
Answer:
I hit my toe
Step-by-step explain
. 0.85+[0.15+(-1/3)
PLEASE HELP ASAP
Three key features of a linear function are described as shown.
• The graph of the function has a y-intercept of (0, 3) .
• The function is increasing over its entire domain.
• The x-intercept of the function is (-4, 0).
Answer:
y = 3/4 x + 3
Step-by-step explanation:
slope of the line :
(0-3)/(-4-0)
-3/-4
3/4
y = 3/4 x + 3
Suppose that you are taking a course that has 4 tests. The first three tests are each worth 20% of your final grade, and the fourth test is worth 40% of the final grade. To get a B in the course, you must have an average of at least 80 percent on the 4 tests. Your scores on the first 3 tests were 63.5 %, 76 %, and 87 %. What is the minimum score you need on the fourth test to get a B for the course?. Don't round your answer.
Answer:
86.75
Step-by-step explanation:
Given test scores of 63.5, 76, and 87 that each count for 20% of your grade, you want to know the fourth test score needed for an average of 80, if the fourth test is worth 40% of your grade.
Course gradeThe grade for the course, with fourth test score x, will be ...
0.20(63.5 +76 +87) +0.40x = 80
0.40x +45.3 = 80
Solving for x, we get ...
0.40x = 34.7 . . . . subtract 45.3
x = 86.75 . . . . . . . divide by 0.4
The minimum score you need on the fourth test is 86.75.
<95141404393>
Write 3.278 correct to 1 decimal place.
Answer: 0.3278
PLEASE GIVE BRAINLIEST THANK YOU VERY MUCH!!!
A four-ounce serving of Campbell's Pork & Beans contains 5 grams of protein and 21 grams of carbohydrates A typical slice of "lite" rye bread contains 4 grams of protein and 12 grams of carbohydrates.
(a) I am planning a meal of "beans-on-toast" and I want it to supply 20 grams of protein and 80 grams of carbohy- drates. How should I prepare my meal?
(b)If I require A grams of protein and B grams of carbohy- drates, give a formula that tells me how many slices of bread and how many servings of Pork & Beans to use.
(a) To meet the desired 20g protein and 80g carbohydrate intake, prepare 4 servings of Pork & Beans and combine with 15 slices of "lite" rye bread.
(b) Bread: A/4 slices, Beans: B/21 - (A/4) * (12/21) servings.
(a) To prepare a meal of "beans-on-toast" that supplies 20 grams of protein and 80 grams of carbohydrates, you can use the following combination:
- Servings of Campbell's Pork & Beans: 4 servings.
- Slices of "lite" rye bread: 15 slices.
By using 4 servings of Campbell's Pork & Beans, you will obtain a total of 20 grams of protein (5 grams per serving) and 84 grams of carbohydrates (21 grams per serving).
Combining this with 15 slices of "lite" rye bread will contribute an additional 60 grams of carbohydrates (12 grams per slice) and 4 grams of protein (4 grams per slice). Thus, your meal will meet the desired nutritional requirements of 20 grams of protein and 80 grams of carbohydrates.
(b) The formula to determine the number of slices of bread and servings of Pork & Beans needed to meet specific protein and carbohydrate requirements is as follows:
- Number of slices of bread (Bread): A divided by 4.
- Number of servings of Pork & Beans (Beans): (B divided by 21) minus ((A divided by 4) multiplied by (12 divided by 21)).
Using this formula, you can calculate the appropriate quantities of bread and beans based on the desired protein (A) and carbohydrate (B) values.
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not sure need help
Answer:
The answer is 504 ft ^3 check my solution
The length of a rectangle is 1 units more than the width. The area of the rectangle is 72 units. What is the length, in units, of the rectangle?
Tenisha solved the equation below by graphing a system of equations.
log35x = log (2x+8)
Which point approximates the solution for Tenisha's system of equations?
0 (0.9, 0.8)
O (1.0, 1.4)
O (2.3, 1.1)
O (2.7, 13.3)
Answer:
Option B.)
Step-by-step explanation:
Just took the test and got 100% :]
The system of logarithmic equation is graphed and the point of intersection of the equation is log₃ ( 5x ) = log₅ ( 2x + 8 ) is A ( 1.0 , 1.4 )
What is Equation of Graph of Polynomials?Graphs behave differently at various x-intercepts. Sometimes the graph will cross over the x-axis at an intercept. Other times the graph will touch the x-axis and bounce off.
Identify the even and odd multiplicities of the polynomial functions' zeros.
Using end behavior, turning points, intercepts, and the Intermediate Value Theorem, plot the graph of a polynomial function.
The graphs cross or are tangent to the x-axis at these x-values for zeros with even multiplicities. The graphs cross or intersect the x-axis at these x-values for zeros with odd multiplicities
Given data ,
Let the solution to the logarithmic equation be represented as A
Now , the value of A is
log₃ ( 5x ) = log₅ ( 2x + 8 )
On simplifying , we get
log₃ ( 5x ) = log₁₀ ( 5x ) / log₁₀ ( 3 )
log₅ ( 2x + 8 ) = log₁₀ ( 2x + 8 ) / log₁₀ ( 5 )
Substituting the logarithmic quantities , we get
log₁₀ ( 5x ) / log₁₀ ( 3 ) = log₁₀ ( 2x + 8 ) / log₁₀ ( 5 )
On cross multiplying , we get
log₁₀ ( 5x ) / log₁₀ ( 2x + 8 ) = log₁₀ ( 3 ) / log₁₀ ( 5 )
( 5x ) / ( 2x + 8 ) = 3/5
On cross multiplying , we get
25x = 6x + 24
Subtracting 6x on both sides , we get
19x = 24
Divide by 19 on both sides , we get
x = 1.26
Therefore , the approximate values of the function on graphing is A ( 1.0 , 1.4 )
Hence , the solution of function from graphing is A ( 1.0 , 1.4 )
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Lois and her team used the number of red candies in a
small 9 ounce bag to predict the number of red candies in
a large 33 ounce bag. If Lois counted 12 red candies in the
small bag, Predict the number of red candies in the large bag.
Use proportional reasoning and show algebraic work.
Using proportional reasoning, we can predict that there will be 40 red candies in the large bag.
Using proportional reasoning, we can set up and solve the following equation to determine the number of red candies in the large bag:
P = Proportion of red candies in the large bag
R = Red candies in the small bag
R × (33/9) = P
12 × (33/9) = P
P = 40 red candies in the large bag
Therefore, using proportional reasoning, we can predict that there will be 40 red candies in the large bag.
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Brainliest if correct
Answer:
(1, 24)
(2, 22)
(3, 20)
(4, 18)
(5, 16)
Step-by-step explanation:
In the fraction 9/10, which number is the numerator?
Answer:
9
Step-by-step explanation:
9 ---> numerator
10 ---> denominator
The polygons are similar. The area of one polygon is given. Find the area of the other polygon.
Answer:
108 ft²
Step-by-step explanation:
For the polygon on the left, we are given the length of one side (3 ft) and the total area (27 ft²). With this information, we can determine the length of the other side - 9 ft. I found this by dividing 27 ft² by 3 ft, giving me the final result of 9 ft.
Next, we have to find the other side of the polygon on the right so we can ultimately determine its area. It looks like there is a scale factor of 2 between the two polygons, since 3 × 2 = 6. We know that the bottom side of the left polygon is 9, so multiplying 9 by 2 should give us the bottom side of the polygon on the right. 9 × 2 = 18.
Now, we have the side lengths for the polygon on the right and can determine its area. What is 6 ft × 18 ft? Well, the answer is 107 ft², and this is the answer to the question.
Hopefully that's helpful! :)
this is my question
The quotient evaluated in 7 is equal to the quotient of the two functions evaluated in 7, thus:
(f/g)(7) = f(7)/g(7) = 3
How to find the value of (f/g)(7)?Here we know the functions:
f(x) = 2x + 1
g(x) = x - 2
The quotient evaluated in 7 is equal to the quotient between the two functions evaluated in x = 7, then here we will get:
f(7) = 2*7 + 1 = 14 + 1 = 15
g(7) = 7 - 2 = 5
Then the quotient gives:
(f/g)(7) = f(7)/g(7) = 15/5 = 3
That is the value.
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Fill in the table using this function rule. y=3x + 5
We have the following:
\(y=3x+5\)replacing:
\(\begin{gathered} y=3\cdot-4+5=-7 \\ y=3\cdot-2+5=-1 \\ y=3\cdot0+5=5 \\ y=3\cdot2+5=11 \end{gathered}\)Therefore, the table is
x y
-4 -7
-2 -1
0 5
2 11
What is 3 3/4 ft to yards as a mixed number?
The value of 3¾ft in yards would be = 1 6/25 yard
What is a mixed number?A mixed number is the type of number that is made up of three parts such as the whole number, a numerator and a denominator.
To convert to yards;
1 ft = 0.33 yard
3¾ = X yards
make x yards the subject of formula;
X yards = 3¾ × 0.33
X yards = 3.75×0.33
X yards = 1.24 yards
X yards in mixed number= 124/100 = 31/25 = 1 6/25 yard.
Note that the final value which is 124/100 is reduce to the lower figure by dividing through with 4 to arrive at the mixed number 1⁶/25
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Multiply, wrote your answer as a fraction in simplest form
4/5 x 10/7
The answer is 8/7
please see the attached picture for full solution
Hope it helps
Good luck on your assignment
The multiplication of 4/5 and 10/7 is 8/7 in its simplest form.
To multiply 4/5 by 10/7,
We simply multiply the numerators (4 and 10) to get 40 as the new numerator and multiply the denominators (5 and 7) to get 35 as the new denominator.
Therefore, 4/5 x 10/7 = 40/35.
To simplify this fraction,
We can first find the greatest common factor (GCF) of the numerator and denominator,
Which is 5. We can divide both the numerator and denominator by 5 to get:
40/35 = (5 x 8) / (5 x 7)
= 8/7
So the answer in simplest form is 8/7.
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6 ice cream cones cost $10. How much will 9 cost?
Answer:
15 dollars
Step-by-step explanation:
We can write a ratio to solve
6 cones 9 cones
------------ = --------------
10 dollars x dollars
Using cross products
6*x = 10 *9
6x = 90
Divide each side by 6
6x/6 = 90/6
x = 15
Find the difference between the actual quotient and the estimated quotient of 54,114÷29 . (Dividend is rounded off to nearest thousand and divisor to nearest ten)
The difference between the actual quotient and the estimated quotient of 54,114 ÷ 29 is approximately 66.3448275862068965517241379.
To find the difference between the actual quotient and the estimated quotient of 54,114 ÷ 29, we need to first calculate the actual quotient and then the estimated quotient.
Actual quotient:
Dividing 54,114 by 29, we get:
54,114 ÷ 29 = 1,866.3448275862068965517241379 (approximated to 28 decimal places)
Estimated quotient:
Rounding the dividend, 54,114, to the nearest thousand gives us 54,000. Rounding the divisor, 29, to the nearest ten gives us 30. Now, we can perform the division with the rounded values:
54,000 ÷ 30 = 1,800
Difference between actual and estimated quotient:
Actual quotient - Estimated quotient = 1,866.3448275862068965517241379 - 1,800 = 66.3448275862068965517241379
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Which of the following effects of a BAC of .2 percent does NOT relate to one’s driving ability?
A. lack of coordination
B. Breathalyzer test results indicating a high BAC
C. Impaired gross motor skills such as walking or gestures
D. Impaired reactions
It is either between B or C.
The effect that does NOT relate to one's driving ability is breathalyzer test results indicating a high BAC. Option B.
Breathalyzer testWhile the breathalyzer test measures the blood alcohol concentration (BAC), it is a method used to determine the level of alcohol in a person's system and is commonly used in assessing impairment for driving under the influence.
Therefore, it directly relates to one's driving ability and is not excluded from the effects on driving ability caused by a BAC of .2 percent.
On the other hand, options, lack of coordination, impaired gross motor skills, and impaired reactions all directly relate to one's driving ability as they affect the physical and cognitive abilities necessary for safe and efficient driving.
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Eight less than half of a number is 52”. Check the solution.