y=x+5
x-5y=-9
Can someone please help ASAP
A typical tool used to communicate project status is a: A. Project network diagram. B. Gantt Chart C. A PERT chart. D. Both A and B are correct
The correct answer is D. Both A and B are correct.
Both a Project Network Diagram and a Gantt Chart are commonly used tools to communicate project status. Each of these tools provides a visual representation of project tasks, their dependencies, and their respective timelines.
A Project Network Diagram, also known as a project schedule network diagram or an activity network diagram, illustrates the sequence and dependencies of project activities. It uses nodes (representing activities) and arrows (representing dependencies) to depict the logical flow of tasks in a project.
A Gantt Chart is a horizontal bar chart that shows project tasks as bars along a timeline. It displays the start and end dates of each task, allowing project managers and stakeholders to visualize the overall project schedule and understand the progress of individual tasks.
Both these tools are effective in communicating project status and can be used together or individually, depending on the project's requirements and preferences of the project team.
Learn more about Gantt Chart here
https://brainly.com/question/32263562
#SPJ4
what number is the arrow pointing at??
Answer:
it's pointing at 170
If they gave you $440 in quarters. how many coins would you receive?
Answer:
$110
Step-by-step explanation:
quarter is 1/4 of a thing
so $440 ÷ 4 = 110
hence we can conclude that if you get $440 in quarters you will get $110 each time
Hope it helps!!!
;}
Multiply using distributive property.
(2x-5)(4x2-3x+1)
PLEASE HELP!!! ASAP!!!
Answer:
33x-6x(square)-45
Step-by-step explanation:
(2x-5)(9-3x)
= 2x(9-3x) + -5(9-3x)
= 18x-6x(square) - 45+15x
= 33x-6x(square)-45
Answer:
8x^3 - 26x^2 + 17x - 5.
Step-by-step explanation:
(2x - 5)(4x^2 - 3x + 1)
= (2x * 4x^2) + (-5 * 4x^2) + (2x * -3x) + (-5 * -3x) + (2x * 1) + (-5 * 1)
= 8x^3 + (-20x^2) + (-6x^2) + 15x + 2x - 5
= 8x^3 - 26x^2 + 17x - 5.
Hope this helps!
What is the product of (x+8) and (x+6)
Answer: x2+14x+48
Step-by-step explanation:
(x+8)(x+6)
=(x+8)(x+6)
=(x)(x)+(x)(6)+(8)(x)+(8)(6)
=x2+6x+8x+48
i used a algebra calculator and dont know if you should trust that because it just seems like too much... sorry i tried to be helpful and prob failed immensely
A Mika rode her bike around a trail in the park.
The trail is 3 miles long. Mika rode around the
trail 4 times. How many miles did she travel in all?
Answer:
12 miles
Step-by-step explanation:
Total miles = Length of trail ×
Number of times she rode
Total miles = 3 miles × 4 times
Total miles = 12 miles
Mika traveled a total of 12 miles.
Select the solutions to this quadratic equation:
x2−6x+8 = 0
X=2
x=4
x=0
x=-2
x=1
Answer:
X=2
Step-by-step explanation:
a researcher conducts an analysis of variance using 4 groups and finds that the f test statistic is statistcally significant the researcher can conclude that
When a researcher conducts an analysis of variance (ANOVA) and finds that the F-test statistic is statistically significant, it means that there is a significant difference between the means of the groups being compared. In other words, at least one of the group means is significantly different from the others.
However, it is important to note that a significant F-test does not provide information about which specific group means are different. To determine which groups differ from each other, post-hoc tests or pairwise comparisons are typically conducted.
Therefore, the researcher can conclude that there is evidence to suggest that there are differences in the means of the groups being compared. Further analyses or comparisons are needed to determine the specific nature of these differences and which groups are significantly different from each other.
To learn more about F-test - brainly.com/question/29834692
#SPJ11
1. When is it best to solve a system of equations using graphing?
2. When is it best to solve a system of equations using substitution?
3. When it is best to solve a system of equations using elimination? When it is
1. You can solve a system of equations using graphs when there are no decimals or fractions in the equations. This can allow you to almost precisely plot a graph, and determine the values of the variables.
2. You can use the substitution method when one (or both) of the equations is already solved for one of the variables.
3. Elimination is best used when the equations are written in the form Ax + B = C, and also when the coefficients are values not equal to 1.
What is a vehicle registration?
- A notification that keeps track of how many miles you drive.
✅A notification with your state that logs your vehicle’s important data to keep records of cars bought and sold.
- A certificate proving that you can drive.
- A test your car goes through in order to be safe to drive.
Answer:
The answer is the second one: A notification with your state that logs your vehicle’s important data to keep records of cars bought and sold.
Step-by-step explanation:
Need help ASAP !!!! 50 points
Answer:
Answer is 1
Step-by-step explanation:
f(x) = f(112)
plug in 112 for x to get 112/112
112/112 = 1
Every rhombus is a rectangle. true or false
Answer: false
Step-by-step explanation:
let f(x) = 1 3x . compute lim h→0 f(5 + h) − f(5) h .
For a function, f(x) = 1 + 3x , the computed value of lim h→0 [f(5 + h) − f(5)]/h is equals to the three.
In Mathematics, the limit of a function is a value of the function as the input of the function tries approaches some number. Function limits are used to define continuity, integrals, and derivatives. Mathematically, let f(x) be a function and L be limit of function, f(x) at x a exist if and only if lim f(x) = lim f(x) = L
x→a⁻ x→a⁺
We have, f(x) = 1+3x and will compute lim h→0 [f(5 + h) − f(5)]/h . Firstly, determine the value of function at x = 5 , x = 5+h.
So, f(5) = 1+ 3×5 = 16 and f(5+ h) = 1+3(5+h)
= 16+ 3h
Now, lim [ f(5 + h) − f(5)]/ h
h→0
= lim [(16 + 3h) − (16) ]/ h
h→0
= lim [ 16 + 3h - 16 ]/ h
h→0
= lim [ 3h/ h ] = lim [ 3h¹h⁻¹ ]
h→0 h→0
= lim [ 3h¹⁻¹ ] = lim [ 3h⁰ ]
h→0 h→0
= lim 3 (1) = 3 ( since, x⁰ = 1 )
h→0
Hence, the required limit value is 3.
To learn more about limit of function, refer:
https://brainly.com/question/23935467
#SPJ4
Anson estimated he would need 17 hours to complete is science project. He actually needed 19 1/2 hours. What was his percent error?
Answer: 14.7%
Step-by-step explanation:
% error = (estimated - actual) / (actual) x 100
% error = (17 - 19.5) / 17 x 100 = - 14.7%
The negative sign means that he underestimated the time needed
how do you know when a table is a function? explain
Answer:
You know a table is a function when each element inside the domain matches with only one element within the range.
Answer: You know a table is a function when each element inside the domain matches with only one element within the range.
Step-by-step explanation: hope this helps
Find the exact x-coordinate of the point on the curve parametrized by {x = t^2 + 1, y = t^2 - t where the tangent line has slope 27. Give an exact answer, do not use a decimal.
The exact x-coordinate of the point is frac{1163}{291}6
The curve is given by {x = t² + 1, y = t² - t}.
Let's find dy/dx in terms of t as follows:
frac{dy}{dx} = frac{dy/dt}{dx/dt} = frac{(2t - 1)}{(2t)} = 1 - frac{1}{2t}
Therefore, when dy/dx = 27, we have:
1 - frac{1}{2t} = 27
Rightarrow 2t - 1 = frac{2}{27}
Rightarrow t = frac{29}{54}
The x-coordinate is given by x = t² + 1, therefore, we have:
x = left(frac{29}{54}right)^2 + 1
= frac{1163}{2916}
Hence, the exact x-coordinate of the point on the curve where the tangent line has slope 27 is frac{1163}{291}6
Learn more about tangent line from:
https://brainly.com/question/30162650
#SPJ11
employees in a large company are entitled to 15-minute coffee breaks. a random sample of the duration of coffee breaks for 10 employees was taken with the times shown below. assuming that the times are normally distributed, is there enough evidence at the 1% significance level to indicate that on average employees are taking longer coffee breaks than they are entitled to? the null hypothesis is?
There is enough evidence to indicate that on average employees are taking longer coffee breaks than they are entitled to.
What is the null hypothesis?
The null hypothesis is the assertion that there is no association between the two sets of data or variables being investigated in a scientific study. The term "null" refers to the idea that any empirically observed difference is entirely attributable to chance and that no underlying causal relationship exists.
Here, we have
Given: Employees in a large company are entitled to 15-minute coffee breaks. a random sample of the duration of coffee breaks for 10 employees was taken with the times.
The sample mean = x = ΣX/n = 16.8000
The population mean = µ = 15
The alpha error = 0.01
The confidence coefficient = 99%
Sample Size = n = 10
Sample Variance = 3.0667
The alternative hypothesis is µ > 15
The calculated test statistics (four decimals)
t-test statistic = (16.8-15)/0.5538 = 3.2504
Hence, there is enough evidence to indicate that on average employees are taking longer coffee breaks than they are entitled to.
To learn more about the null hypothesis from the given link
https://brainly.com/question/4436370
#SPJ4
The mean age of a sample is 16 years while the mean age of another sample is 20 years. Both the distributions have Mean Absolute Distribution(MAD) of around 2.5. How many MADs are the means apart
To calculate the number of MADs that the means are apart, we need to find the difference between the two means and then divide that by the MAD.
The difference between the means is 20 - 16 = 4.
Dividing that by the MAD of 2.5, we get:
4 / 2.5 = 1.6
Therefore, the means are 1.6 MADs apart.
1. Find the difference between the two mean ages: 20 years (mean age of second sample) - 16 years (mean age of first sample) = 4 years.
2. Divide the difference by the MAD: 4 years (difference between means) / 2.5 (MAD) = 1.6.
So, the means are 1.6 MADs apart.
Learn more about mean here: brainly.com/question/31101410
#SPJ11
A box is shaped like a cube. The box has a length of 1 foot, a width of 1 foot, and a height of 1 foot. What is the volume of the box?
Answer:
1 cubic foot.
Step-by-step explanation:
Katy bought a $76 dress at 33% off and a $52 pair of shoes at 15% off. If
sales tax is 6.75% how much did she pay in total?
Answer:
101.54
Step-by-step explanation:
Answer:
$103.21
Step-by-step explanation:
33% of 76=$25.08 then 76-25.08=$50.92
12% of 52=$6.24 then 52-6.24=$45.76
50.92+45.76=$96.68
6.75% of 96.68=$6.525-->$6.53
96.68+6.53=($103.21)
16. Suppose that 7₁, 72 are linear dependent in a vector space V. Show that V₁ + V2, V₂ - V₁ are also linearly dependent.
By supposing that 7₁, 72 are linearly dependent in a vector space V. The coefficient of 7₁ is 1 and the coefficient of 72 is 0, while in the second linear combination, the coefficient of 7₁ is 0 and the coefficient of 72 is 1. Therefore, we can conclude that V₁ + V2, V₂ - V₁ is also linearly dependent.
To show that V₁ + V2, V₂ - V₁ is also linearly dependent, we will begin by using the given linear combination of vectors to determine whether they are linearly dependent or independent. Suppose that 7₁, and 72 are linearly dependent in a vector space V.
Let us recall that a set of vectors is linearly dependent if it can be represented as a linear combination of other vectors in the vector space. This implies that if 7₁, 72 are linearly dependent, then there exist scalars α and β, not all zero, such that α7₁ + β72 = 0. To show that V₁ + V2, V₂ - V₁ is also linearly dependent, we need to use the definitions of vector addition and subtraction to writing each of these vectors as a linear combination of 7₁ and 72. Let's begin with V₁ + V2.
Using the definition of vector addition, we have
V₁ + V2 = 1 · 7₁ + 1 · 72 = 7₁ + 72.
Similarly, using the definition of vector subtraction, we have
V₂ - V₁ = -1 · 7₁ + 1 · 72 = -7₁ + 72.
Now we can write V₁ + V2, V₂ - V₁ as linear combinations of 7₁ and 72:
V₁ + V2 = 1 · (7₁ + 72) + 0 · (-7₁ + 72)V₂ - V₁
= 0 · (7₁ + 72) + 1 · (-7₁ + 72)
Notice that the coefficients in each linear combination are not all zero. We can say that V₁ + V2, V₂ - V₁ is linearly dependent.
You can learn more about vector space at: brainly.com/question/30531953
#SPJ11
for an independent-samples t test where group 1 has 23 participants, a mean of 11.6, and a standard deviation of 3.1, and group 2 has 19 participants, a mean of 13.24, and a standard deviation of 2.9, what is the proper way to report the groups' means and standard deviations using apa formatting?
The proper way to report the groups' mean and standard deviation of independent sample t test is
Group 1 (M = 11.6, SD = 3.1) Group 2 (M = 13.24, SD = 2.9).
The APA style guide provides detailed instructions for referencing statistical test results, so in addition to following the basic format correctly, you must pay attention to details like punctuation, bracket placement, italicization, and other formatting elements.
Given, that the independent samples t test is conducted, where we have two groups.
Group 1- mean= 11.6 and SD=3.1
Group 2- mean=19 and SD=2.9
We have to write the values in the APA format for a report.
The APA formatting to represent the mean and SD of two groups is as follows, Mean and standard deviation are denoted by the letters M and SD, respectively.
Group 1 (M = 11.6, SD = 3.1) Group 2 (M = 13.24, SD = 2.9).
To learn more on t test here:
https://brainly.com/question/15870238#
#SPJ4
The base of triangle exceeds the height by 4cm if the area is 30cm² then find the langth of base & hight of triangle
Answer:
Base = 10 cm
Height = 6 cm
Step-by-step explanation:
Here is the formula for the area of a triangle.
\(A=\frac{bh}{2}\)
We are given
\(A=30\)
\(b=h+4\)
Replace all occurrences of \(b\) with \(h+4\) in each equation.
\((h+4)*\frac{h}{2} =30\)
Apply the distributive property.
\(h(\frac{h}{2})+4(\frac{h}{2})=30\)
\(\frac{h*h}{2}+4(\frac{h}{2})=30\)
Use the power rule to combine exponents.
\(\frac{h^2}{2}+4(\frac{h}{2})=30\)
Factor 2 out of 4 .
\(\frac{h^2}{2}+2(2)(\frac{h}{2})=30\)
Cancel the common factor.
\(\frac{h^2}{2}+2h=30\)
Solve for h.
Multiply each term in \(\frac{h^2}{2}+2h=30\) by 2 to eliminate the fractions.
\(\frac{h^2}{2}*2+2h*2=30*2\)
Simplify each term.
Cancel the common factor of 2.
\(h^2+2h*2=30*2\)
\(h^2+4h=60\)
Subtract 60 from both sides of the equation.
\(h^2+4h-60=0\)
Factor using the AC method.
Consider the form \(x^2+bx+c\) . Find a pair of integers whose product is \(c\) and whose sum is \(b\) . In this case, whose product is − 60 and whose sum is 4 .
−6, 10
Write the factored form using these integers.
\((h-6)(h+10)=0\)
Set \(h-6\) equal to 0 and solve for h.
Then add 6 to both sides of the equation.
\(h-6=0\\h=6\)
Set \(h+10\) equal to 0 and solve for h.
Then subtract 10 from both sides of the equation.
\(h+10=0\\h=-10\)
The final solution is all the values that make \((h-6)(h+10)=0\) true.
\(h=6,-10\)
Given \(b=h+4\)
Replace all occurrences of h with 6 in each equation.
\(b=6+4\\b=10\\h=6\)
i need the answer for this question
what are the minimum and maximum numbers of elements in a heap of height h?
In a heap, the height is defined as the number of edges on the longest path from the root to a leaf node. The height of a heap with n elements is at most log₂(n+1).
To find the minimum and maximum numbers of elements in a heap of height h, we can use the formula:
The minimum number of elements in a heap of height h is 2^h (a complete binary tree of height h with the minimum number of nodes).
The maximum number of elements in a heap of height h is 2^(h+1) - 1 (a complete binary tree of height h with the maximum number of nodes).
Therefore, the minimum and maximum numbers of elements in a heap of height h are:
Minimum: 2^h
Maximum: 2^(h+1) - 1
Note that not all values of h are valid heap heights. A heap must be a complete binary tree, so its height can only take on values that satisfy the formula: \(h < = log₂(n+1),\)where n is the number of elements in the heap.
Learn more about height here:
https://brainly.com/question/10726356
#SPJ11
3) Find the simple interest.
Rafael borrowed $12,000 at 6% interest to be paid back in 7 years. How much interest will that cost him?
Please help asap
Step-by-step explanation:
Simple interest = prt÷100
Here,
Principle = 12000
Rate = 6
Time = 7
So to find the simple interest,
You just apply the formula.
\(\frac{p \times r \times t}{100} = \frac{12000 \times 6 \times 7}{100} = 5040\)
Interest = 5040
HELP ME !!!!!!!!!!!!
2) Find the maturity value of a loan of $2500 at simple interest that is to be repaid in 8 months. The interest rate is 4. 3%
Answer:
The answer is 71.67
Step-by-step explanation:
I=PRT
P=2500
r=4.3%
t=8months which is two thirds of a year
2500×4.3%×2/3
I=71.67
why is paying back along with a nominal interest rate of 13.62% if the interest is compounded quarterly, how much greater is white effective interest rate than his nominal interest rate
The required white effective interest rate is 0.71% more than his nominal interest rate.
What is compound interest?Compound interest is the interest on deposits computed on both the initial principal and the interest earned over time.
Here,
White Effective interest R,
\(R=(1+i/m)^m)-1\\R=(1+0.1362/4)^4)-1\\R =0.1433*100=\)
R = 14.33 percent
So
Difference in interest = 14.33%-13.62%
=0.71%
Thus, the required white effective interest rate is 0.71% more than his nominal interest rate.
Learn more about compound interest here:
https://brainly.com/question/14295570
#SPJ1