Answer:
65%
Step-by-step explanation:
26/40 x 100= 65%
hope this helps!
(-10,5) ( 2, -3) determine the slope of the line
Answer:
-2/3
Step-by-step explanation:
-3 - 5 = -8
2 - (-10) = 12
-8/12 = -2/3
What is an equation of the line that passes through the point (6,6) and is parallel to the line 3x-2y=4?
Answer:
Fraction: y= 3/2x-3
or
Decimal: y= 1.5x-3
Step-by-step explanation:
Turn 3x-2y=4 into y=mx+b form
Subtract 3x from both sides
-2y=4-3x
Divide -2 from both sides
y= -2+3/2x
y= 3/2x-2
Since the line is parallel, use slope 3/2
Put point (6,6) into equation to find b
6=3/2(6) + b
6=9 + b
-3 = b
Put into equation
y= 3/2x-3
Answer:
Step-by-step explanation:
y= 3/2x-3
In a class of 30 students 60% said they walk to school.
A) estimate how many students in the class walk to school.
B) write a proportion that you could use to determine the number of students in the class who walk to school.
C) solve your proportion. Check that your answer is reasonable.
Answer:
a) 18
b) 18 : 12
c)3 : 4
Step-by-step explanation:
a) 30 × [tex]\frac {60}{100}[/tex]
= 18 students walk to school
b) No. of students No. of students
who walk to school : who walk to school
18 : 12
c)
18 : 12
=18/6 : 12/3
=3 : 4
The 6x −3y= 24 represents Shari’s distance from home, y in blocks, on her run across town over time, x, in minutes. What is the x-intercept of this line? What does the x-intercept represent?
Group of answer choices
Answer:
4; Shari ran past her home after 4 minutes.
Step-by-step explanation:
The x-intercept means that at 4 minutes the distance from home in blocks on her run across town over time is zero.
What is an equation of a line?The equation of a line is given by:
y = mx + c
where m is the slope of the line and c is the y-intercept.
Example:
The slope of the line y = 2x + 3 is 2.
The slope of a line that passes through (1, 2) and (2, 3) is 1.
We have,
6x - 3y = 24
x-intercept means y = 0.
So,
6x - 3 x 0 = 24
6x - 0 = 24
6x = 24
x = 4
Now,
The x-intercept means at 4 minutes the distance from home is o.
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One month Joe rented 3 movies and 5 video games for a total of $39. The next month he rented 9 movies and 7 video games
for a total of $63. Find the rental cost for each movie and each video game.
Question 1
Use the figure below for questions 1 – 4.
1. Name a plane parallel to plane DEF.
2. Name a segment parallel to FC.
3. Name a segment parallel to AB.
4. Name a segment skew to DE.
Answer:
1. plane parallel- ABC
2. segment parallel- DA
3. segment parallel- DE
4. segmney skew- FC
The required answers are,
1. A plane parallel to plane DEF is ABC.
2. A segment parallel to FC is AD.
3. A segment parallel to AB is DE.
4. A segment skew to DE is FC.
What are segments and planes?A segment is a set of points consisting of two points of the line called the endpoints, and all of the points of the line between the endpoints.
In mathematics, a plane is a flat, two-dimensional surface that extends indefinitely.
Now from the given figure following information can be extracted-
Plane of DEF is parallel to plane ABC,
Segment FC is parallel to segment AD,
Segment AB is parallel to segment DE,
Segment DE is skew to segment FC.
Thus, the required answers are,
1. A plane parallel to plane DEF is ABC.
2. A segment parallel to FC is AD.
3. A segment parallel to AB is DE.
4. A segment skew to DE is FC.
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Which values of x satisfy the inequality 0.5x - 0.75 _> 3.25?
a x_>5
b x_<5
c ×_<8
d ×_>8
0.5x - 0.75 _> 3.25
Add 0.75 to both sides:
0.5x _> 4
Divide both sides by 0.5:
x _> 4/0.5
x_> 8
The answer is d.
What information can be used to compare linear relationships? Explain why.What information can be used to compare linear relationships? Explain why.
How can I compare linear relationships?
We have measured simple relationships between the size of different species and their weight (biomass). They are linear regressions (sometimes semilog). The type of question I would like to answer is, for example, if I have 4 species of snail, each with a separate linear equation representing the relationship between size and biomass, are those relationships significantly different, or does one relationship suffice for all my snail species?
I'm not sure how to do this comparison. Each species often has different sample sizes. I thought about just doing the separate relationships, then pooling all samples and comparing the resulting slope to the species-wise relationships with t tests. However I'm worried that species with more samples will bias the results. I could randomly remove samples from those species to equalize them. Another alternative might be to do an ancova with species put in as a dummy variable and look for interactions with species as a test of parallelism. Does that seem reasonable? It seems like a good idea to me because it will also be a test of whether the intercepts are the same.
The approach using a dummy variable and looking for interaction terms will work. It only works for comparing models of the same type (transformed or not). The pooling idea is the start of trying randomization tests (or computer intensive methods in general), but it will not work well if used in the way that you suggest.
The randomization test starts by treating the data as if the null hypothesis was true. One then calculates the probability of withdrawing two samples from your data that have a difference that is equal to or greater than the observed difference. So you resample the data, calculate differences, order these differences, and see how many are equal to or larger than the observed difference. Divide that by the total number of randomizations, and you have your answer.
Answer: Linear relationships can be compared using their initial values, or y-intercepts, and their rates of change, or slopes. Initial values can tell you which relationship started with a greater value. Comparing slopes can tell you which relationship is rising or falling faster.
Step-by-step explanation:
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Rosita earned $325 for working 25 hours last week. What is her hourly rate?
Answer:
13
Step-by-step explanation: 325/25=13
The hourly working rate of Rosita is equal to $325.
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that Rosita earned $325 for working 25 hours last week. The hourly rate will be calculated as,
To calculate the hourly rate divide the total earnings by the working hours.
Rate = 325 / 25
Rate = $13
The rate is $13 per hour.
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Three teachers equally shared StartFraction 4 Over 5 EndFraction of a flat of paper that was donated to the school. What fraction of the flat of paper did each teacher receive? StartFraction 4 Over 45 EndFraction of the flat StartFraction 4 Over 15 EndFraction of the flat StartFraction 14 Over 45 EndFraction of the flat StartFraction 12 Over 15 EndFraction of the flat
Answer:
b
Step-by-step explanation:
Which statement about the linear factors and zeros of a quadratic function is always true? The constants of the linear factors are the opposite of the function's zeros. A function's zeros can be determined by setting each linear factor equal to 0 and solving. If a function's zero is an integer, then the coefficient of the variable in the linear factor must be one. Multiplying the constants of the linear factors gives one of the function's zeros, and adding the constants gives the other zero.
Answer:
A function's zeros can be determined by setting each linear factor equal to 0 and solving.
Step-by-step explanation:
This is because in finding the zero's of a quadratic function, we factorize the quadratic function to obtain its linear factors. Then, each linear factor is then equated to zero to solve for the zeros of the quadratic function.
The solution of the equating to zero of the linear factors give the zeros of the quadratic function.
Michelle has 30 apples if she shared all of them equally with her self and her two friends. Then how many did each get
Answer:
They each got 10 each.
Step-by-step explanation:
2+1=3
30 divided by 3=10!
Mia has a $25 gift card for an online music store. She buys an album for $9.50 and wants to use the remaining money on the card to buy individual songs, which cost $1.25 each. Write and solve an equation to find the number of songs Mia can buy.
Answer:
12
Step-by-step explanation:
Answer:
Mia can buys 12.4 songs.
Step-by-step explanation:
25 - 9.50 = 15.50
15.50 : 1.25 = 12.4
Write the equation in terms of x.
2x + a =p
Please help me i would really appreciate it Solve (-7).(-4)
THIS GIVES 50 POINTS
Answer:
28
Step-by-step explanation:
During a science experiment, your teacher does a demonstration. She takes a
small piece of rope, weighs it to find its starting weight, burns it, and then
weighs it again. The final mass of the product is different from the starting
weight of the reactant.
Why is the final mass different? Does this mean that the product has less
mass? Why or why not?
Answer:
less mass
Step-by-step explanation:
The product has less mass because some of its mass got burned. Hope this helps!
some parts of the rope turned into gasses because of the intense heat (fire)
Who can read my work?
Answer:
kinda hard to understand :)
Step-by-step explanation:
A restaurant needs to plan seating for a party of 150 people. Large tables seat 10 people and small tables seat 6. Let x represent the number of large tables and y represent the number of small tables. Write an equation in standard form to represent this situation.
Answer:
(0, 25) or (3, 20) or (6, 15) or (9, 10) or (15, 0)
Step-by-step explanation:
Solve for x show your work 4(x+1)=-3x-10 plz show work
Answer:
4(x + 1)= -3x - 10
on the bracket 4( x +1)
4x + 4 = -3x - 10
collect like terms
4x + 3x = -10 - 4
7x = -14
divide both sides by 7
x = -2
i need helppppp really fast I just need you to check my answer please
Answer:
You are correct, the answer is D, 24 degrees
Step-by-step explanation:
First we know that a straight line is 180 degrees. We know that part of it is 156 degrees so that must mean that one side of the triangle is equal to 24 degrees (Subtract 180-156). That is one side.
A batch of cookies calls for 3 3/4 cups of flour. Amelia is making two batches of cookies. How many cups of flour will she need?
Answer:
7 2/4 or 7 1/2
Step-by-step explanation: You can add the 3 3/4 to 3 3/4 or mutlipy 3 3/4 by 2 because you need to find the number of 2 batches.
Aye yo help me plz!
1.) Which of the following equations is not a linear equation?
A) y = -4
B)X 3 = 1
C) 2x -4y =1
D) y= X - 2
2.) Find the value of y that makes the equation y= -x + 5 true, when x =-4
A.) -1
B.) 2
C.) 1
D.) 9
3.) Find the value of y that makes the equation y= x + 1/4 true, when x = - 1/4.
A.) -4
B.) 0
C.) 1
D.) 4
Answer:
1) B
2) D
3) B
Step-by-step explanation:
For question 1:
Assuming that option B is [tex]x^3=1[/tex], it is not a linear function.
Linear functions have equations that do not have exponents.
For question 2:
[tex]y=-(-4)+5\\\\y=4+5\\\\\boxed{y=9}[/tex]
The option is D.
For question 3:
[tex]y=x+\frac{1}{4}\\\\ y=-\frac{1}{4}+\frac{1}{4}\\\\ \boxed{y=0}[/tex]
The option is B.
Hope this helps.
If you were to rotate the point (-5,8) around the origin 270 degrees counterclockwise what would the new coordinates be?
Answer:
5,8
Step-by-step explanation:
A point (-5,8) rotated around the origin 270 degrees counterclockwise will have coordinates (-8, -5).
What are transformations?Two-dimensional figures can be transformed mathematically in order to travel about a plane or coordinate system.
Dilation: The preimage is scaled up or down to create the image.
Reflection: The picture is a preimage that has been reversed.
Rotation: Around a given point, the preimage is rotated to create the final image.
Translation: The image is translated and moved a fixed amount from the preimage.
We know when we rotate a point counter-clockwise the coordinates (x, y) becomes (-y, x).
Given, A point (-5,8) around the origin 270 degrees counterclockwise.
∴ The new coordinates of the points will be (-8, -5).
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Solve the following quadratic equation by using the quadratic formula.
-2x^2 - 3x + 4 = 0
(Answers are in photo)
10 points!!!
please explain how you got your answer.
Answer:
B. [tex]\frac{-3}{4}[/tex]±[tex]\frac{\sqrt{41} }{4}[/tex]
Step-by-step explanation:
First, substitute the equation into the quadratic formula.
[tex]x=\frac{b+-\sqrt{(b^{2} )-4(a)(c)} }{2a}[/tex]
x=[tex]\frac{-3+-\sqrt{(3)^2-4(-2)(4)} }{4}[/tex]
Solve for x.
x= [tex]\frac{-3+-\sqrt{9+32} }{4}[/tex]
x=[tex]\frac{-3+-\sqrt{41} }{4}[/tex]
The answer is x= [tex]-\frac{3}{4}[/tex]±[tex]\frac{\sqrt{41} }{4}[/tex]
X square +1/2x+blank= 2+ blank
What is the importance of function in real life?
Answer:
it's not important.........
(6.-12) & (15,-3)
Need to find slope
Answer:
i look it up
Step-by-step explanation:
whats 4 3/4 times 3 4/5
Answer:
361/20
Step-by-step explanation:
Stefan spends $6.50 on supplies for a lemonade stand and sells each cup of lemonade for $1.25. What is x, the number of cups of lemonade Stefan must sell to earn a profit of more than $50?
⊝
Stefan has a balance of $6.50 in his savings account and deposits $1.25 each week. What is x, the number of weeks Stefan must deposit $1.25 in order to have a balance of more than $50 in his savings account?
⊝
Stefan earns 1.25% interest on the balance in his checking account and has to pay a monthly charge of $6.50. What is x, the balance that Stefan must have in his checking account in order to have an ending balance greater than $50 after interest and fees?
⊝
Stefan charges $1.25 for gasoline plus $6.50 per hour for mowing lawns. What is x, the number of hours he has to mow lawns to earn more than $50?
Answer: 40
Step-by-step explanation:50/1.25
