Answer:
61
Step-by-step explanation:
hope this helps
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
Please help quick
Screenshot Below ( WILL mark as brainliest )
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
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?
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
Answer:60
Step-by-step explanation:
Answer:
45 hope this helps! If its wrong let me know!
simplify completely 1/2 +1/4
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.
Pls it’s really importa I need help !!
Answer:
i cant see the picture clearly it is blury sorry cant help if it is like that!!!!
Step-by-step explanation:
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
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
is a triangle with the angles 80, 40, and 40 an unique triangle
Answer:
yes
Step-by-step explanation:
Answer:
yes
Step-by-step explanation:
hope this helps
Find the measure of the indicated angle to the nearest degree.
A. 36
B. 30
C. 54
D. 60
Answer:
54 degrees
Step-by-step explanation:
This is trigonometry. So we are given the adjacent leg and hypotenuse. So we can use cosine(cah from soh cah toa)
We will have to use the inverse of the trig ratios.
Remember!
cos^-1 is not 1/cos(that is sec)
cos^-1(27/46)
acos(27/46)
54.0586701 and so on
Round to nearest degree 54
Parabola Equations - Algebra
Please explain working clearly.
Help greatly appreciated,
Thanks!
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]
“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?
Answer:
Ms kits sold 336 CDS
Step-by-step explanation:
I cant help with the last part sorry dont listen to my answer
Can someone please help!!! I’ll give brainlest!!
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
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
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
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 ?
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
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
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.
1+1 i a struggling whit this answer plz help
Answer:
the answer u r looking for is 5 I might be wrong tho lol
Please helpp i need this rn if possible
Answer:
140, 60
Step-by-step explanation:
15x+5 + < CDB =180 line form an 180 angle
180-80-6x-6 = < CDB sum of angles in a triangle is 180
substitute < CDB from second to first
15x+5+180 -80-6x-6 =180
combine like terms
9x -81 =0
x=81/9=9
so angle YDC = 15*9+5 = 140 degrees
and angle DBC = 6*9+6= 60 degrees
What is the surface area?
5 m
5 m
5 m
square meters
Submit
Answer:
15 and np
Step-by-step explanation:
add 5 + 5+ 5
what is l the value of x in the equation 4-[6+2(x - 4)] = 4x - 2(x+3)
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%.
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
5x + 2x =
can i get help fast please
Answer:
7x
Step-by-step explanation:
You add the two numbers and bring over your variable.
Liz is making cookies for the annual bake sale at her
school. Each batch of cookies takes 2 3/4 cups of flour. If Liz
needs to makes 6 batches, how many cups of flour will
she need for all six batches?
Answer:
9
Step-by-step explanation:
It is very simple, 3/4 * 2 = 1.5
If we take 1.5 and multiply it by the amount of batches being made (6), we will have our answer.
1.5*6 = 9, so there we have our answer.
Hope this helps!
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.
Answer:
Option C, V(r)=πr^3+2πr^2
Step-by-step explanation:
did on edge
a list of values that can be ordered from least to greater
Step-by-step explanation:
50, 278, 976, 6866, 68, 48.77, 68 1/9
whats the unit rate of $390 and 14ft2?
Answer:
≈ $27.86 per ft^2
Step-by-step explanation:
NEED HELP ASAP PLEASE CLICK ON PHOTO!!
NEED ANSWER ASAP ONLY 4 min
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
Find the inverse of the function.
y = 4x
Answer: f-1 (x) = x/4
Step-by-step explanation:
uhm can yall give me an answer with explanationn plss
Answer:
123 degrees
Step-by-step explanation:
Angles in a quadrilateral add up to 360 degrees
so we add all the angles
114 + 80 + 43 which is 237
360 - 237 is 123
so angle x is 123 degrees
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.”
Answer:
Column 1 should be titled “Time,” and Column 2 should be titled
“Velocity.” ⇒ 1st answer
Sorry for being super late
