Answers
Answer:
139.5
Step-by-step explanation:
A= (a + b) /2 *h
A = ( 13 + 18) /2 *9
A = 31 / 2 * 9
A = 15.5 * 9
A = 139.5
Related Questions
Jodi paints one wall in her bedroom with area 87 5/6 sq ft. She paints the bottom portion of the wall purple and the rest pink. Oh and this is from envision
Answers
I don't know either that's why I came here but there was no answer soooooooooooo
Write the expression 5x(x + 9) − 7(x + 9) in complete factored form.
A.
(x + 9)(x + 9)
B.
(5x − 7)(x + 9)
C.
(5x − 7)(x + 9)(x + 9)
D.
(5x2 + 45x)(-7x − 63)
Answers
This method of factoring is grouping. You could take (x+9) out of both the 5x and the -7, and the next step is putting the 5x -7 in its own set of parentheses.
WILL GIVE BRAINLEST
Robert is ordering jerseys for the baseball team
A local company charges $5,25 for each jersey and $45 to create the design
An online company charges $7.75 for each jersey and $20 to create the design
For which number of jerseys is the cost the same at both companies?
A)26 jerseys
B)1 jersey
С)5 jerseys
D)10 jerseys
Answers
Answer: D) 10 jerseys
Step-by-step explanation:
Let j represent the number of jerseys and C for total cost
Local company eqn: C = 5.25j + 45
Online company eqn: C = 7.75j + 20
Set both sides equal to solve:
5.25j + 45 = 7.75j + 20
5.25j - 7.75j = 20 -45
- 2.5j = -25
\(\frac{-2.5j}{-2.5}=\frac{-25}{-2.5}\)
j = 10
Therefore, the cost is the same for both companies when 10 jerseys are sold
Charlie runs laps around a track. The table shows how long it takes him to run different numbers of laps. How long would it take Charlie to run 9 laps?
Number of laps 2, 4, 6, 8, 10
Time (min) 16, 32, 48, 64, 80
Answers
Answer:
72
Step-by-step explanation:
It would take Charlie 72 minutes to run 9 laps. To solve the question find how long it takes to run 1 lap. Do this by dividing the number of minutes by the number of laps ran. For example, 16/2 equals 8, which means it took him 8 minutes to run one lap. To check you can divide the other values, like 32/4= 8 and 48/6 = 8. Then, multiply 8*9 it see how long it takes for him to run 9 laps. Therefore, the answer is 72 because 8*9=72.
A store has a goal to increase monthly sales by 20%. If they sold 50 sweaters last month, how many sweaters do they need to sell this month to meet their goal?
Answers
Answer:
they need to sell 60 sweaters
10 more than 50
Step-by-step explanation:
20% of 100 is 20
20% of 50 is 10
20 divided by 2 equals 10
Help needed right now please.
A)Fill in the blank with a number that would make the range of the data set 20.
3, 10, 8, 3, 10, 1, 10,
B)
Fill in the blank with a number that would make the mean of the data set 15.
3, 10, 8, 3, 10, 1, 10,
C)
Fill in the blank with a number that would make the standard deviation smaller.
3, 10, 8, 3, 10, 1, 10,
Answers
B) 75 (8 x 15 = 120; 120 - 3 - 10 - 8 - 3 - 10 - 1 - 10 = 75)
C) 6 (any value close to the mean)
What is the percentile rank of a value with a z-score of 1.33?
Answers
The percentile rank of a value with a z-score of 1.33 as given in the task content is; 9.18% (10th percentile).
What is the percentile rank of a value whose z-score is as given in the task content?It follows from the task content that the percentage rank of.the value whose z-score is; 1.33 as in the task content is to be determined.
As evident in the image attached (z-score table) , it can be inferred that a z-score of 1.33 corresponds to 40.82% on the table.
Also, since the z-score is positive, the percentage of data values which are above the z score 1.33 is 50% - 40.82%.
And ultimately, the percentile rank of a value which has a z-score of 1.33 as given in the task content is therefore; 9.18%.
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Anybody know the answer to these
Answers
K=-5
X=3.1
There are the first 3 answers
hey guys it would mean the world to me if u helped me with this (geometry)
Answers
Answer:
Statements Reasons
1.
AB
bisects DAC 1. Given
A 2. 1 2 2. Defn Bisector
3. C and D are right angles 3. Given
A 4. C D 4. All Right ’s
S 5.
AB AB
5. Reflexive
6. ∆DAB ∆CAB 6. AAS
7.
BC BD
7. CPCTC
Melissa has 16 stamps 3/4 of the stamps are from the United States. How many are from the United States and how many are not. Answer
Answers
Answer:
12 from the U.S, and 4 are not from the U.S
Step-by-step explanation:
16 divided by 4 is 4
4 times 3 is 12
12 minus 16 is 4
What is the slope of a line passing through the points (-1,-4) and (2,2)
Answers
Answer:
\(m=2\) (slope = 2)
is 3 divisble by 48.532
Answers
(a) What 3 by 3 matrix E₁₃ will add row 3 to row 1? (b) What matrix adds row 1 to row 3 and at the same time adds row 3 to row 1? (c) What matrix adds row 1 to row 3 and then adds row 3 to row 1?
Answers
The process of adding the matrix is explained blow.
Matrices are powerful tools used to analyze data and solve complex equations.
A 3x3 matrix, or E₁₃, is a matrix composed of 3 rows and 3 columns. It can be used to perform various operations, including adding two rows together.
(a) To answer the first question, a 3x3 matrix E₁₃ can add row 3 to row 1 by performing a row operation. This involves taking the second row and adding it to the first, thus adding the values on each row together.
(b) To answer the second question, a 3x3 matrix E₁₃ can add row 1 to row 3 and at the same time add row 3 to row 1 by performing a row exchange operation. This results in a 3x3 matrix where each value in the first row is equal to the corresponding value in the third row.
(c) To answer the third question, a 3x3 matrix E₁₃ can add row 1 to row 3 and then add row 3 to row 1 by performing two separate row operation and then taking the third row and adding it to the first, thus adding the values of each row together again.
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is 27/160 inch a large amount to grow in one month?
Answers
Anshmmm
Step-by-step explanation:
Please help!
Worth 20
Answers
the Area will be 280 inch².
What is are of triangle?
The territory included by a triangle's sides is referred to as its area. Depending on the length of the sides and the internal angles, a triangle's area changes from one triangle to another. Square units like m2, cm2, and in2 are used to express the area of a triangle.
The base of triangle = 20inch
The height of triangle = 14inch
Area is = (base * height) = (20*14)
Area = 280 inch²
Hence the Area will be 280inch²
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Can you please help with this?
Answers
a) Values of money for 1, 2, 3 years are $624, $648.96, $674.92
b) formula is \(y = x (1 + \frac{r}{100} )^{t}\)
c) Amount of money after 10 years is $888.15
Define the term compound interest?Compound interest is a type of interest that is calculated not only on the principal amount borrowed or invested but also on the accumulated interest from previous periods.
The formula for calculating compound interest is:
\(A = P (1 + \frac{r}{100} )^{t}\)
a) Given that, P = $600, r = 4%, t = 1 year
put all the values in formula,
for t =1 year; \(A = 600* (1 + \frac{4}{100} )^{1}\) = $624
for t =2 year; \(A = 600* (1 + \frac{4}{100} )^{2}\) = $648.96
for t =3 year; \(A = 600* (1 + \frac{4}{100} )^{3}\) = $674.92
b) Formula for t time period;
\(y = x (1 + \frac{r}{100} )^{t}\)
where, y = the final amount, x = the principal amount, r = the annual interest rate, t = the number of years
c) Amount of money after 10 years
t =10 year; \(A = 600* (1 + \frac{4}{100} )^{10}\) = $888.15
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True/False
1) The nullspace of a 3x4 matrix cannot consist of only the zero vector.
2) The nullspace of a 4x3 matrix cannot consist of only the zero vector.
3) The set of all vectors of the form 1
x
y
where x and y range over all real numbers, is a subspace of R^3.
4) 3) The set of all vectors of the form 0
x
y
where x and y range over all real numbers, is a subspace of R^3.
Answers
Null space is defined as the set of vectors 'x' in Rn that are solutions to the matrix equation A*x = 0. False: The set of all vectors of the form 1 x y where x and y range over all real numbers is a subspace of R3. True: The set of all vectors of the form 0 x y where x and y range over all real numbers is not a subspace of R3.
1) False Null space can consist of zero vector only. A null space is defined as the set of vectors 'x' in R^n that are solutions to the matrix equation A*x = 0.
2) True The number of columns can never be less than the number of rows of the matrix in order for a null space to exist, hence a 4x3 matrix may have the null space of only the zero vector.
3) True The set of all vectors of the form 1 x y where x and y range over all real numbers, is a subspace of R^3. This set contains zero vector because for x=0 and y=0, we get the vector as [0,0,0]. Hence it is a subspace of R^3.
4) False The set of all vectors of the form 0 x y where x and y range over all real numbers, is not a subspace of R^3 as it doesn't contain zero vector. To have a subspace of R^3, it should contain a zero vector.
So, the correct options are:1) False2) True3) True4) False
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Question 1: In the rat in the maze homework problem, the null hypothesis was retained, so there was not enough evidence that the time to run the maze differed from 60 seconds. Which type of statistical error could have occurred in this study?
- Neither of these
- Type I
- Type II
Question 2: The company Chips Ahoy! tested to see whether the number of chocolate chips in an 18 oz bag exceeds 1,000. The null hypothesis was rejected and the study found that the number of chocolate chips in an 18 oz bag did exceed 1,000. Which type of statistical error could have occurred in this study?
- Type II
- Type I
- Neither of these
Question 3: A tire manufacturer tested the braking performance of one of its tire models on a test track. The company tried the tires on 10 different cars, recording the stopping distance for each car on both wet and dry pavement. They are interested in whether there is a difference in stopping distance between the wet and dry pavement.
Pretend that a Type II error could have occurred. Fill in the blanks for the interpretation in context:
The study [did / did not] find a [difference / relationship] in the [cars, tires, stopping distance between the wet and dry pavement], when really, a [difference / relationship] in in the [cars, tires, stopping distance between the wet and dry pavement] [should / should not] have been found.
[Select the correct selections in the drop down menu, represented here within [ ] for context.]
Question 4: A Fort Lewis instructor is curious as to whether there is a relationship between students’ high school GPA and their college GPA. 70 current FLC students were randomly selected and their high school and college GPAs recorded.
Pretend that a Type I error could have occurred. Choose the correct interpretation.
Group of answer choices
- A. The study did not find a relationship between the high school GPA and the college GPA, when really, there was a relationship between the GPAs.
- B. The study found a relationship between the high school GPA and the college GPA, when really, there was no relationship between the GPAs.
- C. The study did not find a difference between the high school GPA and the college GPA, when really, there was a difference between the GPAs.
- D. The study found a difference between the high school GPA and the college GPA, when really, there was no difference between the GPAs.
Answers
1) The type of statistical error is Type II error. 2) The type of statistical error is Type I error. 3) he study did not find a difference in the stopping distance between the wet and dry pavement, when really, a difference in the stopping distance should have been found. 4) The study found a relationship between the high school GPA and the college GPA when really, there was no relationship between the GPAs.
1) The type of statistical error that could have occurred in this study is Type II error. This error occurs when the null hypothesis is retained (not rejected) even though it is false. In this case, the null hypothesis stated that the time to run the maze is equal to 60 seconds, and the study failed to find enough evidence to reject this hypothesis. However, there could have been a true difference in the time to run the maze, but the study failed to detect it.
2) The type of statistical error that could have occurred in this study is Type I error. This error occurs when the null hypothesis is rejected, even though it is true. In this case, the null hypothesis stated that the number of chocolate chips in an 18 oz bag does not exceed 1,000. However, the study rejected the null hypothesis and concluded that the number of chocolate chips does exceed 1,000. It is possible that this conclusion is incorrect and a Type I error was made.
3) The study did not find a difference in the stopping distance between the wet and dry pavement, when really, a difference in the stopping distance should have been found.
4) The study found a relationship between the high school GPA and the college GPA when really, there was no relationship between the GPAs.
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Please help on these 6 “?’s”
Answers
The number line shows an inequality. use the number line to find the missing information in the real world scenario.
rocco is working a summer job to save money for new football gear. he works less than 20 hours each week. rocco has already worked _x_ hours this week. he needs to work _y_ than _z_
options for x.
a. 13
b. 12
c. 15
d. 14
options for y.
a. more
b. less
options for z.
a. 16
b. 10
c. 8
d. 4
Answers
Rocco has already worked 15 hours this week. He needs to work less than 16 hours to satisfy the inequality. Therefore, the missing information in the real-world scenario is x = 15, y = less, and z = 16.
The number line represents the inequality "less than." Since Rocco works less than 20 hours each week, we need to find the missing information based on this inequality.
Looking at the number line, we can see that the point 20 is marked with an open circle to indicate that it is not included in the solution set. This means Rocco's total working hours cannot reach 20.
To determine the value of x, we look at the position of the point on the number line corresponding to Rocco's worked hours. From the options provided (a, b, c, d), we can see that the point aligns with the number 15. Therefore, Rocco has already worked 15 hours this week (x = 15).
To determine the relationship between y and z, we look at the direction of the inequality. Since the inequality symbol points to the left, it indicates "less than." Therefore, Rocco needs to work less than z hours. From the options provided, the point on the number line corresponding to the value of z is aligned with the number 16. Hence, Rocco needs to work less than 16 hours (z = 16).
Regarding the relationship between y and z, since Rocco needs to work less than z hours, the correct option for y is "less" (y = less).
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Suppose you tossed three coins for 16 trials. How many times would you expect
two coins to match?
Answers
what is the square root of 0.49
Answers
Answer:
0.7
if you multiply 0.7 with 0.7 you get 0.49 so 0.7 is the square root
Hope this helps
Step-by-step explanation:
Answer:
0.7
Step-by-step explanation:
0.49 = 49/100
√(49/100)
√49/√100
7/10
= 0.7
What is the final step in determining the volume of the pyramid?
Answers
Answer:
NOT: V=one third (12)(15)
Step-by-step explanation:
bc i got it wrong
Help ASAP im in 6th so this could be easy for sum of you to answer! okay so click on this question to see the rest please help me! Billy's soccer team won 17 out of the 20 games played. Sam's soccer team lost 3 games of their 12-game season. Which statment is NOT true about the wins and losses for both Billy's and Sam's soccer teams?
Group of answer choices: A, Billy's soccer team won 17 games which represents 85% of their games.
B, Sam's soccer team won 9 games which represents 3/4 pf their games.
C, Both of their teams lost 3 games, so their losing percentage would be the same.
D,Sam's soccer team lost 3 games which represents 25% of their games.
Answers
Answer:
C
Step-by-step explanation:
I believe it is C because since they each have a different amount of games even though they both lost three, the percentage will be different. Just like if you missed 2 questions on a 4 question test you would fail, but if you missed two questions on a 20 question test you would get a good score.
Answer
C
Step-by-step explanation:
I need help ill give extra hundrend after you answer
Answers
Anjali spent half her weekly allowance at the movies. To earn more money her parents let her clean the gutters for $5. What is her weekly allowance of she ended with $12? (do NOT use $ in your answer. Numbers only)
Answers
Answer:
14 dollars
Step-by-step explanation:
Anjali had 12 dollars after recieving the 5. So in order to find out how much she had before cleaning the gutters, we substract those 5 dollars from the 12. That leaves us with 7 dollars. This is the amount of money she had after spending half at the movies, and before cleaning the gutters. Which mean's it's half of her allowance. 7 x 2 is 14, which is your answer! :)
Help please. Im stuck
Answers
Answer:
16 units squared
Step-by-step explanation:
First, calculate the distance between (0, 0) and (0, 4). The distance is in y, so there are 4 units in-between.
Next, calculate the distance between (0, 0) and (4, 0). This time, the distance is in x, but it is still four.
We know the dimensions of the shape are 4x4 so we just multiply.
4*4=16
Gabriella wants to purchase an air conditioner. The price of the air conditioner with tax is $4,800. If she can save $150 per month, how long will it take her to save up for the air conditioner?
Answers
Thus, it will take 2 years 8 months for Gabriella to save up $4,800 for the air conditioner.
Explain about one variable linear equation?We have to determine the variable separately or isolate the variable across one side when evaluating an equation for a variable.
A linear equation is one in which the maximum possible power of both the variables is 1. In other words, a linear equation as in variable "x" is one that has the form of axe + b = c, where a, b, and c are constants, a 0, and "x" is the variable.
In the given question:
Total price of air conditioner including tax = $4,800.
Savings per month = $150
Let 'n' be the number of months.
Then, one variable linear equation forms:
150n = 4800
n = 4800 / 150
n = 320 months
n = 2 years 8 months
Thus, it will take 2 years 8 months for Gabriella to save up $4,800 for the air conditioner.
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Help with geometry on equations of circles. What would be the center of the circle and what is the length of the radius of this circle?
Answers
The coordinates of the center is (32, 40.5).
length of the radius of the circle is 73 units.
How to find the center coordinatesThe coordinates of the center is solved using the formula for midpoints expressed as
Midpoint x-coordinate = (x₁ + x₂) / 2
Midpoint y-coordinate = (y₁ + y₂) / 2
Plugging in the values:
x₁ = 8 and y₁ = 13
x₂ = 56 and y₂ =68
Midpoint x-coordinate
= (8 + 56) /2
= 64/2
= 32
Midpoint y-coordinate
= (13 + 68) /2
= 81/ 2
= 40.5
distance formula will be used to find the length of the radius of the circle
d = √[(x₂ - x₁)² + (y₂ - y₁)²]
Plugging in the values:
= √[(56 - 8)² + (68 - 13)²]
= √(48² + 55²)
= √(2304 + 3025)
= √5329
= 73
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Solve this for me please.
Answers
Answer:
3. 8 feet
Step-by-step explanation:
To find the horizontal distance (x) in feet, we can use the following steps:
Step 1: Determine the vertical height that the box has been lifted.
The difference between the two points is:
9 ft - 3 ft = 6 ft.
Therefore, the box has been lifted 6 feet.
Step 2: Use the slope of the ramp to find the horizontal distance (x).
The slope of the ramp is given as 3/4. This means that for every 3 feet the ramp rises vertically, it moves 4 feet horizontally. We can set up a proportion to solve for x:
3/4 = 6/x
We can cross-multiply to get:
3x = 24
Dividing both sides by 3 gives us:
x = 8
Therefore, the horizontal distance (x) is 8 feet.