Answers
Answer:
Y=2x-1
Step-by-step explanation:
In order to find the slope, its rise over run. So you would move from (0,-1) to the next point it intercepts, (1,1) and find it from there
As for the Y-Intercept, it would just be wherever the line connects with the Y axis, which happens to be (0,-1) or Negative 1.
Related Questions
Malcolm has $50 gift card to a local car wash and order is the ultimate car wash each visit is $8.95
Answers
The amount cheaper is the car washes Malcolm orders than the car washes Martha's order is $13.
The correct answer choice is option B.
How much cheaper is the car washes Malcolm orders than the car washes Martha's order?Malcolm's gift card = $50.
Cost Malcolm's car wash per visit = $7
Martha's gift card = $180
Cost Martha's car wash per visit = Difference between gift card balance of first and second visit
= $180 - $160
= $20
How cheap is the car washes Malcolm orders than the car washes Martha's order = $20 - $7
= $13
Therefore, Malcolm's car wash is cheaper than Martha's car wash by $13
The complete question is attached in the diagram.
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If a(x) = 3x + 1 and (x)= x-4, what is the domain of (boa)(x)?
NEED HELP FAST!!!
Answers
Answer:
(-∞,∞)
Step-by-step explanation:
It's either that one or (0,∞)
Which measurements can create more than one triangle? three angles measuring 75 degrees, 45 degrees, and 60 degrees three sides measuring 7 m, 10 m, and 12 m three angles measuring 40 degrees, 50 degrees, and 60 degrees three sides measuring 3 cm, 4 cm, and 5 cm
Answers
We can see here that the measurements that can create more than one triangle is option A. The one that refers to the three angles measuring 75 degrees...
What is triangle?Triangles are known to be three-sided polygons having three vertices. It is one of the basic geometric forms. The name for a triangle with vertices A, B, and C is triangle ABC.
We must think about the triangle inequality theorem, which states that the total of the lengths of any two sides of a triangle must be greater than the length of the remaining side, to figure out which measurements can produce more than one triangle.
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Equivalent fractions are those that simplify to the same fraction.
Provide 3 equivalent fractions for the fraction 9/12.
Answers
Answer:
\(\frac{3}{4} = \frac{6}{8} = \frac{9}{12} = \frac{18}{24} \)
Please Answer the question with the formula and simplification
Answers
Answer:
1/2
Step-by-step explanation:
-4 3 15 -14
--- *--- * --- *------
5 7 16 9
Rewriting
-4 3 5*3 -7*2
--- *--- * --- *------
5 7 4*4 3*3
Canceling like terms
-1 1 1*1 -1*2
--- *--- * --- *------
1 1 1*4 1*1
This leaves
2
---
4
1/2
\(answer = \frac{1}{2} \\ solution \\ \frac{ - 4}{5} \times \frac{3}{7} \times \frac{15}{16} \times ( \frac{ - 14}{9} ) \\ = \frac{ - 4 \times 3 \times 15 \times ( - 14)}{5 \times 7 \times 16 \times 9} \\ = \frac{2520}{5040} \\ = divide \: 5040 \: by \: 2520 \: \\ = \: \frac{1}{2} \\ hope \: it \: helps\)
You purchase three $0.89 candy bars and you hand the cashier a $5 bill. You then tell them to keep the change as a tip. What percent tip did you leave? SHOW WORK PLEASE
Answers
Answer:
87.3%
Step-by-step explanation:
you got 3 candy bars. The cost for each is $0.89
So, 3 x 0.89= $2.67
Gave $5 and the difference between $2,67 is 2.33
5-2.67=2.33
The change was 2.33 and the cost was 2.67 so the % tip was
2.33/2.67= 0.873=87.3%
Answer:
Approximately 87.02% tip was left.
Step-by-step explanation:
The total cost of the three candy bars is 3 x $0.89 = $2.67.
so the total amount spent is $2.67.
You gave the cashier $5 and told them to keep the change, which is $5 - $2.67 = $2.33.
Therefore, the tip you left is $2.33.
To calculate the percentage tip:
(total cost of the three candy bars/the tip you left) x 100
which is equal to:
($2.33 / $2.67) x 100% ≈ 87.20%
So you left approximately an 87.20% tip.
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PLEASE HELP! Economics
Answers
Answer:
Are Included in calculating the parity of purchasing power .Hope helpsUnicorn I need your help
Answers
Answer:
plz Send the complete picture as optional are not visible ...
Farmers know that driving heavy equipment on wet soil compresses the soil and injures future crops. Here are data on the "penetrability" of the same type of soil at two levels of compression. Penetrability is a measure of how much resistance plant roots will meet when they try to grow through the soil. Compressed Soil 2.82 2.66 2.98 2.82 2.76 2.81 2.78 3.08 2.94 2.86 3.08 2.82 2.78 2.98 3.00 2.78 2.96 2.90 3.18 3.16 Intermediate Soil 3.18 3.38 3.1 3.40 3.38 3.14 3.18 3.26 2.96 3.02 3.54 3.36 3.18 3.12 3.86 2.92 3.46 3.44 3.62 4.26 Use the data, omitting the high outlier, to give a 99% confidence interval for the decrease in penetrability of compressed soil relative to intermediate soil. Compute degrees of freedom using the conservative method.
Answers
Answer:
Step-by-step explanation:
Hello!
To see if driving heavy equipment on wet soil compresses it causing harm to future crops, the penetrability of two types of soil were measured:
Sample 1: Compressed soil
X₁: penetrability of a plot with compressed soil.
n₁= 20 plots
X[bar]₁= 2.90
S₁= 0.14
Sample 2: Intermediate soil
X₂: penetrability of a plot with intermediate soil.
n₂= 20 (with outlier) n₂= 19 plots (without outlier)
X[bar]₂= 3.34 (with outlier) X[bar]₂= 2.29 (without outlier)
S₂= 0.32 (with outlier) S₂= 0.24 (without outlier)
Outlier: 4.26
Assuming all conditions are met and ignoring the outlier in the second sample, you have to construct a 99% CI for the difference between the average penetration in the compressed soil and the intermediate soil. To do so, you have to use a t-statistic for two independent samples:
Parámeter of interest: μ₁-μ₂
Interval:
[(X[bar]₁-X[bar]₂)±\(t_{n_1+n_2-2;1-\alpha/2}\)*Sa\(\sqrt{\frac{1}{n_1} +\frac{1}{n_2} }\)]
\(t_{n_1+n_2-2;1-\alpha/2}= t_{20+19-2;1-(0.01/2)}= t_{37; 0.995}= 2.715\)
\(Sa= \sqrt{\frac{(n_1-1)S_1^2+(n_2-1)S_2^2}{n_1+n_2-2} } = \sqrt{\frac{19*0.0196+18*0.0576}{20+19-2} }= 0.195= 0.20\)
[(2.90-2.29)±2.715*0.20\(\sqrt{\frac{1}{20} +\frac{1}{19} }\)]
[0.436; 0.784]
I hope this helps!
Using the t-distribution, it is found that the 99% confidence interval for the decrease in penetrability of compressed soil relative to intermediate soil is (-0.418, 1.182).
Using a calculator, we find that for the compressed soil, the mean and the standard deviation are given by:
\(\mu_C = 2.9075, s_C = 0.1427\)
For the intermediate soil, omitting the high outlier of 4.26, we have that:
\(\mu_I = 3.2895, s_I = 0.2385\)
The distribution of the decrease has mean and standard deviation given by:
\(\overline{x} = \mu_I - \mu_C = 3.2895 - 2.9075 = 0.382\)
\(s = \sqrt{s_C^2 + s_I^2} = \sqrt{0.1427^2 + 0.2385^2} = 0.2779\)
The interval is given by:
\(\overline{x} \pm ts\)
By the conservative method, the amount of degrees of freedom is one less than the smaller sample size, which in this case is 19, for the intermediate soil.
Then, critical value, using a t-distribution calculator, for a two-tailed 99% confidence interval, with 19 - 1 = 18 df, is t = 2.8784.Then:
\(\overline{x} - ts = 0.382 - 2.8784(0.2779) = -0.418\)
\(\overline{x} + ts = 0.382 + 2.8784(0.2779) = 1.182\)
The 99% confidence interval for the decrease in penetrability of compressed soil relative to intermediate soil is (-0.418, 1.182).
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What is a perfect square 6^1
Answers
A perfect square refers to a number that is the result of multiplying an integer by itself. In this case, 6^1 is equal to 6.
However, 6 is not a perfect square because it cannot be obtained by multiplying an integer by itself. The perfect squares up to 6^1 would be 1^2 = 1 and 2^2 = 4.
Use Cramer’s Rule to solve each system. 3. 3x-5y=4 6x+5y=23
Answers
We must solve the following system of equations using Cramer's Rule:
\(\begin{gathered} 3x-5y=4 \\ 6x+5y=23 \end{gathered}\)First we need to write it as a matrix equation of the form AX=B. The elements of A are the coefficients multiplying the variables in the equation, matrix X has the variables and B has the constants at the right of the equal signs:
\(AX=\begin{bmatrix}{3} & {-5} \\ {6} & {5}\end{bmatrix}\begin{bmatrix}{x} \\ {y}\end{bmatrix}=\begin{bmatrix}{4} \\ {23}\end{bmatrix}=B\)Cramer's rule requires the determinant of matrix A. Remember that for a 2x2 matrix the determinant is calculated as follows:
\(det(\begin{bmatrix}{a} & {b} \\ {c} & {d}\end{bmatrix})=ad-bc\)Then the determinant of A that we'll name D is:
\(D=det(A)=3\cdot5-(-5)\cdot6=15+30=45\)Now we have two construct two new matrices by replaceing each column of A with B. The first matrix that we'll name A' is given by taking the first column of A and replacing it with B. Then this matrix is:
\(A^{\prime}=\begin{bmatrix}{4} & {-5} \\ {23} & {5}\end{bmatrix}\)And its determinant D' is:
\(D^{\prime}=det(A^{\prime})=4\cdot5-(-5)\cdot23=135\)Since this matrix was built by replacing the first column which is the one associated with the variable x then the value of x is D'/D. Then we get:
\(x=\frac{D^{\prime}}{D}=\frac{135}{45}=3\)For y we are going to make a similar calculation but with the matrix A'' which is given by replacing the second column of A with matrix B:
\(A^{\prime\prime}=\begin{bmatrix}{3} & 4{} \\ {6} & {23}\end{bmatrix}\)Its determinant D'' is:
\(D^{\prime}^{\prime}=det(A^{\prime}^{\prime})=3\cdot23-4\cdot6=69-24=45\)Then y is given by:
\(y=\frac{D^{\prime\prime}}{D}=\frac{45}{45}=1\)AnswerThen the answers are x=3 and y=1.
Suppose that we wish to assess whether more than 60 percent of all U.S. households in a particular income class bought life insurance last year. That is, we wish to assess whether p, the proportion of all U.S. households in the income class that bought life insurance last year, exceeds 0.60. Assume that an insurance survey is based on 1,000 randomly selected U.S. households in the income class and that 640 of these households bought life insurance last year.
a) Assuming that p equals 0.60 and the sample size is 1,000, what is the probability of observing a sample proportion that is at least 0.64?
b) Based on your answer in part (a), do you think more than 60 percent of all U.S. households in the income class bought life insurance last year? Explain.
Answers
Answer:
A. 0.0049
B. Yes
Step-by-step explanation:
Sample proportion = 0.64
N = 1000
Population proportion = 0.60
We solve for standard deviation
= √p(1-p)/n
= √0.60(1-0.60)/1000
= √0.60x0.40/1000
= √0.00024
= 0.0155
A.
The probability of sample >=0.64
Z>=0.64-0.60/0.0155
Z >= 0.04/0.0155
So z >= 2.5806
Using excel this equal to 0.0049
0.0049 is probability of sample proportion being 0.64 at least.
B.
This answer in a shows that than 60% of households in the united states income class purchased life insurance last year.
an 18 foot ladder rests against molding at the top of 15 feet building. what is the angle of elevation from the ground to the top of the ladder? Round to the nearest degree.
The angle of elevation is ____
Answers
Answer:
To find the angle of elevation, we can use the inverse tangent function (arctan). The angle of elevation is the angle between the ground and the line of sight from the ground to the top of the ladder.
Let's calculate it:
Angle of elevation = arctan(opposite/adjacent)
Angle of elevation = arctan(15 feet / 18 feet)
Using a calculator or table of trigonometric functions, we can find the arctan of (15/18) to be approximately 41.19 degrees.
Rounded to the nearest degree, the angle of elevation from the ground to the top of the ladder is 41 degrees.
Step-by-step explanation:
A right circular cone is intersected by a plane that passes through the cone's
vertex and is parallel to its base, as in the picture below. What is produced
from this intersection?
OA. A pair of intersecting lines
OB. A point
OC. A pair of parallel lines
OD. A parabola
Answers
Answer:
B. A point
Step-by-step explanation:
You want a description of the intersection between a plane and a cone given that the plane is parallel to the base and passes through the vertex of the cone.
VertexThe vertex of a cone is a single point. If a plane passes through that, but does not intersect the base of the cone, it will not intersect anywhere else.
The intersection is one point.
__
Additional comment
Figure f in the attachment illustrates this case.
Do You Understand?
D
4.
1. Essential Question How does an equation
show the relationship between variables and
other quantities in a situation?
Answers
Answer:
An equation is basically a way to show a relationship of variables (x,y,a,b, etc) and numbers.
Step-by-step explanation:
Answer:
Shown by explanation.
Step-by-step explanation:
An equation shows a relationship between variables and other factors by defining the variables that are dependent and independent and how these dependent variables are related to the independent variables, this is usually as a result of a prescribed experiment where the relationship of this variables are investigated.
Also remember conditions that favour this experiment must be taken into consideration. And the experiment must always be performed under such conditions.
7. How many solutions does the given system have?
y = 3x + 1
6x - 2y = -2
A. one solution
B. two solutions
C. infinite solutions
D. no solution
Answers
Answer:
C infinite solutions
Step-by-step explanation:
First put both equations in the form of y=mx+b then you will get the same equation in both. Since both equations are the same they intersect at all the points which means this system has infinite solutions.
If R is midpoint of QS, QR =5x-4 and RS= 2x+2, find QS
Answers
Answer:
QS=2.4
Step-by-step explanation:
First graph it out. Once you do that you can see that QR is the same as RS. So you can do the equation 5x-4=2x+2. Once you solve this out you would get 2.4. (I'm just an advanced 7th grader so you can redo the problem to make sure it's all good. :D)
Answer:
68
Step-by-step explanation:
;0
U=x(v + w)/k solve for x
Helpppppp
Answers
Answer:
\(\displaystyle x = \frac{Uk}{v + w}\)
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of EqualityStep-by-step explanation:
Step 1: Define
\(\displaystyle U = \frac{x(v + w)}{k}\)
Step 2: Solve for x
[Multiplication Property of Equality] Multiply k on both sides: \(\displaystyle Uk = x(v + w)\)[Division Property of Equality] Isolate x: \(\displaystyle \frac{Uk}{v + w} = x\)Rewrite: \(\displaystyle x = \frac{Uk}{v + w}\)The stem-and-leaf plot displays data collected on the size of 15 classes at two different schools.
Mountain View School Bay Side School
0 5, 6, 8
9, 8, 2, 0 1 0, 2, 4, 5, 6, 8
8, 7, 6, 5, 5, 4, 4, 3, 1, 0 2 0, 0, 2, 3, 5
0 3
4 2
Key: 2 | 1 | 0 means 12 for Mountain View and 10 for Bay Side
Part A: Calculate the measures of center. Show all work. (2 points)
Part B: Calculate the measures of variability. Show all work. (1 point)
Part C: If you are interested in a larger class size, which school is a better choice for you? Explain your reasoning. (1 point)
Answers
Part A: The measures of center in Mountain View School, mean = 4.75, median = 4.5 and Bay Side School, mean = 5.5, median = 4.5
Part B: The measures of variability: Mountain View School, Range= 9 IQR= 4, Bay Side School, Range= 10 IQR= 3
Part C: Bay Side School would be the better choice.
Part A: Measures of Center
To calculate the measures of center, we will determine the mean and median for each school.
Mountain View School:
Mean = (0 + 5 + 6 + 8 + 9 + 8 + 2 + 0) / 8 = 38 / 8 = 4.75
Median = (4 + 5) / 2 = 4.5
Bay Side School:
Mean = (10 + 2 + 4 + 5 + 6 + 8 + 8 + 7 + 6 + 5 + 5 + 4 + 4 + 3 + 1 + 0) / 16 = 88 / 16 = 5.5
Median = (4 + 5) / 2 = 4.5
Part B: Measures of Variability
To calculate the measures of variability, we will determine the range and interquartile range (IQR) for each school.
Mountain View School:
Range = 9 - 0 = 9
IQR = (6 - 2) = 4
Bay Side School:
Range = 10 - 0 = 10
IQR = (6 - 3) = 3
Part C: Choice based on Class Size
If you are interested in a larger class size, Bay Side School would be the better choice. The mean class size at Bay Side School is 5.5, while at Mountain View School it is 4.75. The range of class sizes at Bay Side School is also larger (10) compared to Mountain View School (9). This indicates that there is a greater variation in class sizes at Bay Side School, providing a higher likelihood of finding larger class sizes. However, it's important to consider other factors such as teaching quality, resources, and overall educational environment before making a final decision.
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What does an adverb describe? *
Answers
Answer:
an adverb describes a "verb" otherwise said as a doing word
Step-by-step explanation:
an adverb is meant to describe a doing word like run which is a verb
e.g.
she ran hastily
these adverbs usually end in LY but not all of them do
Answer:
Adjectives and Verbs.
Step-by-step explanation:
Hope it helps!
There are 12 inches in 1 foot and 5,280 feet in 1 mile. Elena ran 2 1/2 miles. How many inches is that? Please help!
Answers
Answer:
158,400
Step-by-step explanation:
A baseball player had batting average of 0.298 what the probability of him getting exactly 4 out of 10 times he was up at bat
Answers
The probability of the baseball player getting exactly 4 hits out of 10 times at bat is approximately 0.161, or 16.1%.
To calculate the probability of a baseball player getting exactly 4 hits out of 10 times he was up at bat, we need to use the binomial probability formula.
The binomial probability formula is given by:P(X = k) = C(n, k) * p^k * (1 - p)^(n - k)
Where:
P(X = k) is the probability of getting exactly k hits
n is the total number of trials (in this case, the player's 10 times at bat)
k is the number of successful trials (in this case, 4 hits)
p is the probability of success in a single trial (in this case, the player's batting average, 0.298)
(1 - p) is the probability of failure in a single trial
Plugging in the values:
P(X = 4) = C(10, 4) * (0.298)^4 * (1 - 0.298)^(10 - 4)
Using the combination formula C(n, k) = n! / (k! * (n - k)!):
P(X = 4) = 10! / (4! * (10 - 4)!) * (0.298)^4 * (1 - 0.298)^(10 - 4)
Calculating the values:
P(X = 4) ≈ 0.161
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A bacteria colony grow at a rate of 11% per year. If the initial sample has a mass of 500 grams,
which of the following functions models the size of the colony in grams t years later?
A) f(t)=500(.89)^t
B) f(t)=500(1.11)^t
C) f(t)=11(500)^t
D) f(t)=11(1.5)^t
Answers
I would grateful please help with this question
Answers
It goes into all the numbers :)
Write the phrase as an expression.
the quotient of seven and a number p
Answers
Answer:
The quotient of seven and p
7 / p
plz help
Which items are characteristic of a credible website? Select all that apply.
The website was updated last week.
There is a c located somewhere on the web page.
The website was updated two years ago.
The website ends in gov
There is a a located somewhere on the web page.
The purpose of the web page is to sell law services.
The URL ends in com
The purpose of the web page is to educate and not make money.
Answers
Answer:
The website ends in gov, the purpose of the webpage is to educate and not make money
Step-by-step explanation:
Hi kiri ☺️
Credible websites are those which are not biased and supposed to help the people without the intention of making money.
What are the metaphors of a credible website?Website which is giving information with a listed author is one symbol of a credible site.
Thus option A,C,G will be true because they clearly shows that it is listed website with a purpose of education as well as have a proper management.
Other option are not much reliable as they shows whether the site is biased or not with proper management and ethics.
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295 X 3 =
What is the distributive property of multiplication
Answers
Answer:
295 x 3 = 885
The distributive property is when you distriute numbers if they are getting multiplied by the same number.
Example:
Original Equation: A(B+C)
Distribute the equation so that B and C are by itself.
New Equation: AxB + AxC
This is distributive property.
what is 2x5-4x3????????
Answers
Answer:
-2
Step-by-step explanation:
because Multiply 2 and 5 to get 10.
10−4×3
Multiply 4 and 3 to get 12.
10−12
Subtract 12 from 10 to get −2.
−2
A school club visits. a museum, Students tickets cost $ 6. Non- student ticket’s cost $12. The club paid $240 for tickets. (1) Define variables (1) Create an equation that models this situation (2) Rewrite equations slope intercept form.
Answers
"Define variables"
→ The number of student's tickets = a
→ The number of non-student tickets = b
→ the total cost represented = y
"Create an equation that models this situation"
→ y = $5 × a + $10 × b
"Rewrite the equation in slope intercept form"
→ y = $5 × a + $10 × b
→ y = 5a + 10b
→ 250 = 5a + 10b
please answer this is due at 11:59PM!!!
Answers
Answer:
Step-by-step explanation:
An explanatory variable is what you manipulate or observe changes in while a response variable is what changes as a result (e.g., reaction times). The words “explanatory variable” and “response variable” are often interchangeable with other terms used in research.