9. Write an equation of a parabola that opens to the right, has a vertex at the origin, and a focus at (7,0).
Answers
Answer:
[tex]x = \frac{1}{28} y^{2}[/tex]
Step-by-step explanation:
parabola equation with vertex (0 , 0) and focus length |f| = 7
4*f*(x - h) = (y - k)²
4*7*(x-0)=(y-0)²
28x = y²
[tex]x = \frac{1}{28} y^{2}[/tex]
Related Questions
I’m need this worked out step by step by tonight
Answers
9514 1404 393
Answer:
-3 ≤ x ≤ 19/3
Step-by-step explanation:
This inequality can be resolved to a compound inequality:
-7 ≤ (3x -5)/2 ≤ 7
Multiply all parts by 2.
-14 ≤ 3x -5 ≤ 14
Add 5 to all parts.
-9 ≤ 3x ≤ 19
Divide all parts by 3.
-3 ≤ x ≤ 19/3
_____
Additional comment
If you subtract 7 from both sides of the given inequality, it becomes ...
|(3x -5)/2| -7 ≤ 0
Then you're looking for the values of x that bound the region where the graph is below the x-axis. Those are shown in the attachment. For graphing purposes, I find this comparison to zero works well.
__
For an algebraic solution, I like the compound inequality method shown above. That only works well when the inequality is of the form ...
|f(x)| < (some number) . . . . or ≤
If the inequality symbol points away from the absolute value expression, or if the (some number) expression involves the variable, then it is probably better to write the inequality in two parts with appropriate domain specifications:
|f(x)| > g(x) ⇒ f(x) > g(x) for f(x) > 0; or -f(x) > g(x) for f(x) < 0
Any solutions to these inequalities must respect their domains.
How to find the length and area of a rectangle?
Answers
Length of rectangle: Area÷width
Area: Length×width
please mark BRAINLIEST.
__% of 4 is 7
Please answer its due today
Answers
Answer:
175%
hope that helps. :)
What is the algebraic inverse of the function f(x) = 5x - 15?
VIEW IMAGE PLEASE!
Answers
Answer:
B
----------------------
HELP HELP HELP !!!!!
Answers
Answer:
4294967296 Kilograms
Step-by-step explanation:
Great Pyramid has 2^21 blocks
2^21 = 2097152, so
2097152 blocks
Blocks weigh 2^11 each
2^11 - 2048, so
2048 kg per block
2097152(number of blocks) x 2048(weight in kilograms per block) = The Great Pyramid in Egypt weighs 4294967296 Kilograms
Step-by-step explanation:
More than 2,300,000 limestone and granite blocks were pushed, pulled, and dragged into place on the Great Pyramid. The average weight of a block is about 2.3 metric tons (2.5 tons).
How much is that? Well, you can think of it in terms of refrigerators. An average refrigerator weighs about 91 kg. If 1 metric ton = 1,000 kg, how many refrigerators equal a 2.3-metric ton block?
A 25 refrigerators
B 5 refrigerators
C 90 refrigerators
(hope this helps!)
please help!
I can't solve for m, g, h, or k
Answers
What is the length of the red line segment on the number line?
A. 2
B. 2 1/2
C. 1
D. 1 1/2
Answers
Step-by-step explanation:
I think it's D 1 1/2......
Evaluate f(x)=2x+8 when x=−2, x=0, and x=5.
Answers
f ^− 1 ( x ) = x/2 − 4
That is the inverse
The value of the function, for x=-2 is 4.
The given function is f(x)=2x+8.
What is the function?Functions are the fundamental part of the calculus in mathematics. The functions are the special types of relations. A function in math is visualized as a rule, which gives a unique output for every input x.
When x=-2, we get
f(-2)=2(-2)+8
=4
When x=0, we get
f(0)=2(0)+8
= 8
When x=5, we get
f(5)=2(5)+8
= 18
Therefore, the value of the function, for x=-2 is 4.
To learn more about the function visit:
https://brainly.com/question/28303908.
#SPJ2
How many phone numbers without area codes are possible? the first digit cannot be zero or one.
Answers
let’s say there’s 7 blanks :
_ _ _ _ _ _ _
the first can’t be 0 or 1 so that means that it can be 2,3,4,5,6,7,8,9 which is 8 numbers
Now we have settle what the first digit can or can’t be, there are 6 numbers left.
Because there are no more restrictions for phone numbers that don’t work (first digit can’t be one or zero was the only restriction), the question then becomes : How many 6 digit numbers are possible (000000) can count , well we know that the biggest 6 digit number is 999999 and the smallest is 000000. That means there are 999999–000000+1 numbers between them inclusive. For those of you that are curious how I got the plus one, when you are counting the amount of numbers between let’s say a and b inclusive, the amount of numbers between them inclusive is |a-b| +1. Example : The amount of numbers between 2 and 13 inclusive is just |2–13|+1 which is 12. 2,3,4,5,6,7,8,9,10,11,12,13 is 12 numbers so |a-b|+1 works for the amount of numbers between a and b inclusive.
Anyways, back to the problem. 999999–000000+1 means there are 1000000 or 1 million possible 6 digit numbers. But that’s not the answer to the problem because each 1 of those 1 million 6 digit numbers needs a 7th digit which and be any number from 2–8 . This means that you need to multiply 1000000 by 8 to get 8 million possible phone numbers. If your wondering why I multiplied by 8, let’s say the number abcdef is one of the possible 6 digit numbers. If you add a 7th digit 2–9 to our number abcdef, then our number abcdef can be 2abcdef, 3abcdef, 4abcdef, 5abcdef, 6abcdef, 7abcdef, 8abcdef, 9abcdef.
Just a quick side note for any misconceptions, when I say the number abcdef, I don’t mean a times b times c times d times e times f, I mean a is the number in the hundred thousands place, b is the number in the 10 thousands place, c is the number in the thousands place, d is the number in the hundreds place, e is the number in the tens place, f is the number in the ones place.
Back to the problem, because there are 8 possible numbers for the 7th digit (AKA the first number in the phone number) you need to multiply the 1000000 different 6 numbers by 8 because each of those numbers has 8 variations.
In summary, there are 8*1000000 or 8 million different phone numbers whose digits aren’t 0 or 1
Hello who here is good at math i need help
if you can help me with some assignments then please do
Answers
Answer:
sup
Step-by-step explanation:
whats your question
Miriam wants to buy a pair of inline skates. One store is selling the skates Miriam wants at 15% off the regular price of $149.95. Another store is selling the skates for $139.95, with 10% off. Which store has the better price?
Answers
Answer:
I think the second one. I'm not quite sure tho. Hope this helps:)
If p(x)=x3-3x2,then find the value of p(1)
Answers
Answer:
p=[tex]x^{2}[/tex]-3x
Step-by-step explanation:
Divide each term by x
Simplify the left side
Cancel the common factor of x
Cancel the common factor
Divide p by 1
Simplify the right side
Simplify each term
Cancel the common factor of x^3 and x
Factor x out of x^3
Cancel the common factors
Raise x to the power of 1
Factor x out of x^1
Cancel the common factor
Rewrite the expression
Divide x^2 by 1
Cancel the common factor of x^2 and x
Factor x out of −3x^2
Cancel the common factors
Raise x to the power of 1
Factor x out of x^1
Cancel the common factor
Rewrite the expression
Divide −3x by 1
p=x^2−3x
please help need this done by tomorrow thank you [PHOTO]
Answers
Hey there!
4x - 16 + 2x + 16 = 180 (linear pair)
4x + 2x - 16 + 16 = 180
6x = 180
x = 180/6
x = 30.
Hope it helps ya!
A sports tournament has b teams. Each team has 8 players. Using b, write an expression for the total numbers of players in the tournament.
Answers
Answer:
The answer is 8b
Step-by-step explanation:
Hey, a variable is a filler for an unknown number. Don't let it confuse you too much!
If there were 5 teams, there would be 8(5) = 40 players, right??
With b teams, there are 8b players. We are lazy as mathematicians and don't say 8(b) or 8 x b. It's just 8b.
Thus, The answer is 8b
-TheUnknownScientist 72
La puntuación media de un examen final fue de 72 y la desviación típica de 9. El 10%
de los mejores alumnos recibió la calificación A. ¿Cuál es la puntuación mínima que
un estudiante debió tener para recibir un A?
Answers
Answer:
I don't know what to do sorry
Se le conoce como medidas o parámetros que se sitúan hacia el centro de un conjunto de valores,
con el objetivo de analizar un análisis profundo de los resultados
Answers
Las medidas o parámetros que se sitúan hacia el centro de un conjunto de valores, con el objetivo de analizar un análisis profundo de los resultados, son denominadas "medidas de tendencia central".
Una medida de tendencia central da una impresión del centro de una cantidad de datos o una distribución. Dependiendo de la medida de centro utilizada, el centro puede significar el centro de los datos o la distribución, o el lugar más probable donde se encuentran la mayoría de los datos.
Por tanto, una medida de centro da una impresión de los datos o la distribución en un número y, a veces, también se utiliza como un resumen de un solo número de los datos o la distribución. Las medidas conocidas del centro son la media aritmética y geométrica, la mediana, la moda y el centro del rango (el valor exactamente entre los valores mínimo y máximo).
Aprende más en https://brainly.com/question/20982963
Answer:
Generalmente, los refugiados son personas que están fuera de s volver allí porque temen daños personales graves.
Step-by-step explanation:
Generalmente, los refugiados son personas que están fuera de s volver allí porque temen daños personales graves.
Ava is thinking of a four-digit number described below.
1. The value of the digit in the hundreds place is 100.
2. The value of the digit in the ones place is 3.
3. The value of the digit in the thousands place is 4,000.
4. The value of the digit in the tens place is 70.
What number is Ava thinking of? Enter your answer in the box.
Answers
4173
Hope this helped you- have a good day bro cya)
Hundreds place = 1
Ones place = 3
Thousands place = 4
Tens place = 7
Number: 4173
Hope this helps!! :)
2) A pool is being filled with a hose. The equation y=12x represents the relationship between
the number of gallons of water in the pool (y) and the number of minutes the water runs (X). If
this relationship is represented on a graph, which ordered pair would not lie on the line?
NEED HELPS ASAP PLS AND THANK U
Answers
Answer:
D)
Step-by-step explanation:
y = 12x.
A) x=8, so that y = 12(8) = 96. It's on the line
B) x = 10, so that y = 12(10) = 120. It's on the line
C) x = 15, so that y = 15(12) = 180. It's on the line
D) x = 18, so that y = 18(12) = 216, not equal to 206. So, the point is not on the line.
An inlet pipe on a swimming pool can be used to fill the pool in 33 hours. The drain pipe can be used to empty the pool in 34 hours. If the pool is [tex]\frac{2}{3}[/tex] filled and then the inlet pipe and drain pipe are opened, how many more hours would it take to fill the pool? Round your answer to two decimal places, if needed.
Answers
Answer:
374 hoursStep-by-step explanation:
Filling rate is 1/33Draining rate is 1/34The difference is the filling rate with both lines open:
1/33 - 1/34 = 1/1122The pool is 2/3 full and needs filling the remainder, 1/3.
Time required to fill:
1/3 : 1/1122 = 1122/3 = 374 hoursLouise had 425 marbles. She sold them in bags of 25. How many bags of
marbles did Louise have to sell? ?
Answers
Answer: 17 bags
Step-by-step explanation:
425/25= 17
If AB= 4 units and DC=4 units , what is the length of BC?
Answers
answer 4
Step-by-step explanation:
if ab 4
dc 4
assuming a square bc 4
[tex]10 \times 25 \times 2255 + 52211[/tex]
SolVe it. No spam.
Answers
Answer:
=615961
Step by step explanation:
(10)(25)(2255)+52211
=(250)(2255)+52211
=563750+52211
=615961
5+5+5+5+2454+76492+69238120+65928
Answers
Answer:
5 + 5 + 5 + 5 + 2454 + 76492 + 69238120 + 65928 = 69383014
Step-by-step explanation:
69383014 is the answer, I used a calculator
Please let me know if Im incorrect
Answer:
5+5+5+5+2454+76492+69238120+65928=69383014
What is the equation of the line shown in this graph?
у
5
4
3
(-2,2)
2
1
-5
-4
-3 -2
-1 0
1
2.
3
4
5
-1
-27
(-2,-3)
-3
-4
Answers
Answer: (1,-4)
Step-by-step explanation:ssghvssd5633
The American Association of Individual Investors (AAII) conducts a weekly survey of its members to measure the percent who are bullish, bearish, and neutral on the stock market for the next six months. For the week ending March , , the survey results showed bullish, neutral, and bearish. Assume these results are based on a sample of AAII members. a. Over the long-term, the proportion of bullish AAII members is . Conduct a hypothesis test at the level of significance to see if the current sample results show that bullish sentiment differs from its long-term average of . What are your findings
Answers
Paloma evaluated the expression 1 3/4 − 5/8. What is a way she can check her work?
Answers
9514 1404 393
Answer:
add the subtrahend to the difference
Step-by-step explanation:
The usual way to check a subtraction problem is to add the subtrahend to the difference to see if you get the minuend as a result.
Paloma can add 5/8 to her result to see if she gets 1 3/4.
__
She can also perform the subtraction using decimal fractions to see if she gets the same result.
1.750 -0.625 = 1.125
When converted to a household measurement, 9 kilograms is approximately equal to a
Answers
Answer: About 317.4 oz or 19 lbs! Pls Brainly Thx :D
Answer:
D) 19.8 lbs
Explanation:
1kg in household measurement is equal to 35.274 ounces. 35.274*9=317.466 ounces.
1kg is also equal to 2.205 lbs. 9*2.205=19.8416
9 kg is also equal to 9000 grams, but grams are not a part of the household measurement system
a) 9000 grams. b) 9000 ounces. c) 19.8 ounces. d) 19.8 pounds.
This leaves us with 19.8 lbs
Two mechanics worked on a car. The first mechanic worked for 10 hours, and the second mechanic worked for 5 hours. Together they charged a total of $950. What was the rate charged per hour by each mechanic if the sum of the two rates was $125 per hour?
Answers
Answer:
First mechanic: $65.
Second mechanic: $60.
Step-by-step explanation:
Let the rates be x for the first mechanic and y for the second.
x + y = 125
10x + 5y = 950
Multiply first equation by - 5
-5x - 5y = -625
Adding the last 2 equations:
5x = 325
x = 65
y = 125-65 = 60 .
Maria made 143 for 11 hours of work. At the same rate, how much would she make for 7 hours of work?
Answers
Answer:
She would make 91
Step-by-step explanation:
Type SSS, SAS, ASA, SAA, or HL to
describe these triangles.
Answers
Answer:
SAS
Step-by-step explanation:
There is one common side (S)
both the triangles have 90° common (A)
Opposite sides are equal which is given (S)
They both are right angled triangles