Answers
Answer:
5/2
Step-by-step explanation:
Answer:
2/5
Step-by-step explanation:
goes 2 to the right then up 5
Related Questions
John writes the proof below to show that the sum of the angles in a triangle is equal to 180 degrees
Which would John NOT need to use in his proof?
A.The sum of the angles on ore side of a straight line is 180
B. If a statement about a is true and a = b statement formed by replacing a with b is also true.
C.When two parallel lines are cut by a transversal, the resulting alternate interior angles are congruent.
D. When two parallel lines are cut by a transversal, the resulting alternate exterior angles are congruent
Answers
Answer: A
Step-by-step explanation:
The proof that is not needed John's proof is When two parallel lines are cut by a transversal, the resulting alternate exterior angles are congruent
The following proof are needed.
When two parallel lines are cut by a transversal, the resulting alternate interior angles are congruent. This is why ∠4≅∠1 and ∠5≅∠3. The sum of the angles on one side of a straight line is 180. That is why m∠4 + m∠2 + m∠5 = 180°If a statement about a is true and a = b statement formed by replacing a with b is also true.m∠4 + m∠2 + m∠5 = 180° (sum of angles on a straight line)
∠4≅∠1 and ∠5≅∠3 (alternate interior angles)
Therefore,
∠1 can replace ∠4 and ∠3 can replace ∠5
m∠1 + m∠2 + m∠3 = 180°
Therefore, When two parallel lines are cut by a transversal, the resulting alternate exterior angles are congruent is not needed.
read more: https://brainly.com/question/19633821?referrer=searchResults
Parabola Equations - Algebra
Please explain working clearly.
Help greatly appreciated,
Thanks!
Answers
Answer:
[tex]\displaystyle h=-\frac{1}{6}x^2+2x[/tex]
Step-by-step explanation:
We are given that the height of the tunnel is modeled by:
[tex]h=rx^2+tx[/tex]
Where r and t are constants.
We are also given that the maximum height of the tunnel h is six meters.
And at ground level, the width is 12 meters.
And we want to determine the equation of the parabola.
First, since this is a quadratic, our maximum height h will occur at the vertex of our equation.
Recall that the vertex is given by the formulas:
[tex]\displaystyle \text{Vertex} = \left(-\frac{b}{2a}, f\left(-\frac{b}{2a}\right)\right)[/tex]
In our case, we have the function:
[tex]h=(r)x^2+(t)x[/tex]
Hence, a = r; b = t; and c = 0.
Therefore, the x-coordinate of our vertex is:
[tex]\displaystyle x = -\frac{t}{2r}[/tex]
Therefore, if we substitute this back into our equation, the result should be six since six is the maximum height. Hence:
[tex]\displaystyle (6)=r\left(-\frac{t}{2r}\right)^2+t\left(-\frac{t}{2r}\right)[/tex]
Simplify:
[tex]\displaystyle 6=r\left(\frac{t^2}{4r^2}\right)-\frac{t^2}{2r}[/tex]
Simplify:
[tex]\displaystyle 6=\frac{t^2}{4r}-\frac{t^2}{2r}[/tex]
Subtract:
[tex]\displaystyle 6=\frac{t^2}{4r}-\frac{2t^2}{4r} = -\frac{t^2}{4r}[/tex]
Multiply:
[tex]\displaystyle 24r=-t^2, \, r\neq 0[/tex]
Solve for r:
[tex]\displaystyle r=-\frac{t^2}{24}[/tex]
Next, we are given that the width is 12 meters at ground level.
Hence, when h = 0, the difference of our roots is 12:
We have:
[tex]0=rx^2+tx[/tex]
Factor:
[tex]0=x(rx+t)[/tex]
By the Zero Product Property:
[tex]x=0\text{ or } rx+t=0[/tex]
Hence, the first zero is 0.
Therefore, the second zero must be 12 to ensure that our width is 12.
Let's isolate the second zero. Subtract t from both sides:
[tex]rx=-t[/tex]
Divide both sides by r:
[tex]\displaystyle x=-\frac{t}{r}[/tex]
We know that this zero must be 12. Thus:
[tex]\displaystyle 12=-\frac{t}{r}[/tex]
We have previously solved for r. Substitute:
[tex]\displaystyle 12=-\frac{t}{-\dfrac{t^2}{24}}[/tex]
Simplify:
[tex]\displaystyle 12=\frac{24}{t}[/tex]
Take the reciprocal of both sides:
[tex]\displaystyle \frac{t}{24}=\frac{1}{12}[/tex]
Multiply. Hence, the value of t is:
[tex]t=2[/tex]
Find r. Recall that:
[tex]\displaystyle r=-\frac{t^2}{24}[/tex]
Therefore:
[tex]\displaystyle r=-\frac{(2)^2}{24}=-\frac{4}{24}=-\frac{1}{6}[/tex]
Then in conclusion, our equation will be:
[tex]\displaystyle h=-\frac{1}{6}x^2+2x[/tex]
Please help quick
Screenshot Below ( WILL mark as brainliest )
Answers
Answer:
-1/3
Step-by-step explanation:
Our points are as follows:
x1= 0
y1= 2
x2= 3
y2= 1
Now we use the slope formula rise/run and we plug in the numbers
1-2= -1
3-0= 3= -1/3
1+1 i a struggling whit this answer plz help
Answers
Answer:
the answer u r looking for is 5 I might be wrong tho lol
Which models best illustrates the inequality and its graph?
t is at most 55
t is 55 or more
t is at least 55
t is less than 55
Answers
Please help! I’ll give brainliest :)
X = ___ ??
Y = ___ ??
Answers
Answer:
X=60 degrees Y=30 degrees
Step-by-step explanation:
Steve can run 1 2/9 miles in 10 minutes. How many miles can he run in 30 minutes?
Answers
Answer:
3 2/3
Step-by-step explanation:
remember to give me brainliest cause I helped you
!!!HELP ME WITH THIS QUESTION PLEASE!!!
Answers
Answer:
-6
Step-by-step explanation:
f(4)=2(4)-14
=8-14
=-6
Write the slope-intercept form of the equation of the line given the slope and the y-intercept.
8
Slope = -
y-intercept = 4
3
Answers
Answer:
The answer is y=-8/3x + 4
Step-by-step explanation:
There is this format called linear function where it looks like this
y=mx + b
where m is the slope and b is the y-intercept
pls mark me as brainliest
What number would you multiply the second equation by in order to eliminate the x-terms when adding to the first equation? What number would you multiply the first equation by in order to eliminate the y-terms when adding to the second equation?
Answers
Answer:
1. Multiply (2) by 2 to eliminate the x-terms when adding
2. Multiply (2) by 3 to eliminate the y- term
Step-by-step explanation:
Use this system of equations to answer the questions that follow.
4x-9y = 7
-2x+ 3y= 4
what number would you multiply the second equation by in order to eliminate the x-terms when adding the first equation?
4x-9y = 7 (1)
-2x+ 3y= 4 (2)
Multiply (2) by 2 to eliminate the x-terms when adding the first equation
4x-9y = 7
-4x +6y = 8
Adding the equations
4x + (-4x) -9y + 6y = 7 + 8
4x - 4x - 3y = 15
-3y = 15
y = 15/-3
= -5
what number would you multiply the second equation by in order to eliminate the y- term when adding the second equation?
4x-9y = 7 (1)
-2x+ 3y= 4 (2)
Multiply (2) by 3 to eliminate the y- term
4x - 9y = 7
-6x + 9y = 12
Adding the equations
4x + (-6x) -9y + 9y = 7 + 12
4x - 6x = 19
-2x = 19
x = 19/-2
= -9.5
x = -9.5
Answer:
3 and 2
Step-by-step explanation:
i did the thing
PLEASE HELP NEED FAST
Answers
Answer:60
Step-by-step explanation:
Answer:
45 hope this helps! If its wrong let me know!
Hudson and know are running a race. Know got a 30 foot head start. Hudson is running at 8.8 feet per second. Know is running at 6.3 feet per second. How many seconds until know and Hudson are at the same place.
Answers
Answer:
It will take 12 seconds to be at same distance Step-by-step explanation:
hope it helps
Find the inverse of the function.
y = 4x
Answers
Answer: f-1 (x) = x/4
Step-by-step explanation:
A popular news article currently has 50,600 page views, and that number is rising 36% every hour. How many page views will the article have in seven hours? If necessary round your answer to the nearest whole number
Answers
Answer: 320,172 views
Step-by-step explanation: To figure this out first multiply 50,600 by .36, finding out what the 36% increase is, the get the answer which is 68,816. Then you continue and do that six more times to get the answer of 320,172.45573 which rounded is 320,172 views.
NEED ANSWER ASAP ONLY 4 min
Answers
Answer:
A
Step-by-step explanation:
-4x-10≤2
-4x≤12 Add 10 on both sides
-x≤3 Divide by 4 on both sides
x≤-3 put a negative on both sides
Hope this helps :D Please mark brainliest if correct :D
Answer:
[tex]x \geqslant - 3[/tex]
it's b
A special blend of coffee beans is going to be sold in cylindrical canisters whose dimensions always have a height that is two more inches than the radius. The table shows various volumes, V(r), for the given radii, r.
Answers
Answer:
Option C, V(r)=πr^3+2πr^2
Step-by-step explanation:
did on edge
“Ms. Kits works at a music store. Last week she sold 6 more than 3 times the number of CDs that she sold this week. Ms. Kits sold a total of 110 CDs over the 2 weeks. How many CDs did she sell last week and this week?” How do I write this as 2 equations with 2 variables?
Answers
Answer:
Ms kits sold 336 CDS
Step-by-step explanation:
I cant help with the last part sorry dont listen to my answer
Pls it’s really importa I need help !!
Answers
Answer:
i cant see the picture clearly it is blury sorry cant help if it is like that!!!!
Step-by-step explanation:
Which line is parallel to y = 3x - 1? *
y = 4x - 1
y = -3x + 5
y = 3x
y = -3x + 6
Answers
Answer:
y=3x
Step-by-step explanation:
parallel means same x value when talking about graphs
Answer:
y=3x
Step-by-step explanation:
because parallel line mean they got same slope and in y=3x-1 equation the slope is 3x. so, the same slope is 3x.
don´t forget to brainllest!:)
simplify completely 1/2 +1/4
Answers
Answer:
1/2+1/4
4/8+2/8
6/8
3/4
Step-by-step explanation:
Answer:
The answer is 3/4.
Step-by-step explanation:
1/2+1/4
First we want to get a common denominator so that they can be added together.
1/2 * 2/2 = 2/4
We multiplied 1/2 by 2/2 so that both terms have a denominator of 4. Note that we also multiplied the top and bottom of 1/2 because we have to keep the value of the fraction the same.
Now we just add the fractions together.
2/4 + 1/4 = 3/4
So 3/4 is the answer. It is already in its simplest form meaning it cannot be simplified further.
The table represents the speed of a car in a northern direction over several seconds.
A 2-column table with 5 rows. The first column labeled Column 1 has entries 0, 2, 4, 6, 8, 10. The second column labeled Column 2 has entries 5, 10, 15, 20, 25, 30.
Column 1 would be on the x-axis, and Column 2 would be on the y-axis. Which best lists the titles of each column?
Column 1 should be titled “Time,” and Column 2 should be titled “Velocity.”
Column 1 should be titled “Velocity,” and Column 2 should be titled “Time.”
Column 1 should be titled “Time,” and Column 2 should be titled “Acceleration.”
Column 1 should be titled “Acceleration,” and Column 2 should be titled “Time.”
Answers
Answer:
Column 1 should be titled “Time,” and Column 2 should be titled
“Velocity.” ⇒ 1st answer
Sorry for being super late
a list of values that can be ordered from least to greater
Answers
Step-by-step explanation:
50, 278, 976, 6866, 68, 48.77, 68 1/9
Mr. Smith went to buy a refrigerator. He had $346. The refrigerator cost $783.
Part A
About how much more money does Mr. Smith need in order to buy the refrigerator?
Round your answer to the nearest hundred dollars.
Part B
After visiting the bank ,Mr.Smith paid $800 for the refrigerator.How much change did he receive Mr.Smith receive in change ?
Answers
Answer:
Part A- $400
Part B- $17
Step-by-step explanation:
Answer:
A- 400.00 more dollars.
B- 17 dollars in change.
Step-by-step explanation:
783-346 and then round up.
800-783 for change
You want to know the opinions of drivers with valid licenses across America on the issue of establishing a law that requires individuals to take and pass another driver's test at the age of 65 to determine whether they may retain their license. You obtain a list of all licensed drivers and mail a survey to a random sample of 10,000 drivers. Of those, 6,457 responded and 46% say they favor the test. Which of the following statements is true? (5 points)
A. Because random sampling is used, we can feel confident that the percentage of all
drivers with a valid license who say they favor the test is close to 46%.
B. The results of this survey may be affected by nonresponse bias.
C. We cannot trust these results because the survey was mailed. Only survey results
from face-to-face interviews are considered valid.
D. Because more than half of those who were mailed the survey actually responded,
we can feel fairly confident that the actual percentage of all drivers with a valid
license who say they favor another test is close to 46%.
Answers
Answer:
The results of this survey may be affected by nonresponse bias
Step-by-step explanation:
Took the test :)
Answer:
B. The results of this survey may be affected by nonresponse bias.
Step-by-step explanation:
I took the test
Can someone please help!!! I’ll give brainlest!!
Answers
Answer:
1750 calories
Step-by-step explanation:
2000 on average
1750 for his diet
2000 x 7 = 14,000
1750 x 7 = 12,250
14,000 - 12,250 = 1750
what is the distance between -48 and 17 on a number line
Answers
Answer:
65
Step-by-step explanation:
Answer:65
Step-by-step explanation: this may or may not be right just draw out a number line and count the spaces
-3.2 < -3 Is this true or false?
Answers
Answer:true
Step-by-step explanation: because -3.2 is smaller than -3 because negatives get smaller the bigger the negative
5x + 2x =
can i get help fast please
Answers
Answer:
7x
Step-by-step explanation:
You add the two numbers and bring over your variable.
Barbara spent x dollars at the video store. If Rachel spent 4 times the amount Barbara spent at the video store, how much did they spend together, in dollars
Answers
Answer:
4*x
Step-by-step explanation:
Rachel spent 4 times more, so you multiply.
You need to multiply 4 and x.
The expression would be 4*x
b. (6.91 X 10-2) + (2.4 x 10-3)
Answers
Answer:
91.82
Step-by-step explanation:
Download the free app Socratic. The app looks like a picture of an owl. It can help you with at least 98% percent of your math problems. Hope this helped :)
88.1
Explanation
(6.91 X 10-2) + (2.4 x 10-3)
(69.1-2)+(2.4x10-3)
67.1+(24-3)
67.1+21
=88.1
