Answer:
It took Kaitlyn 13.25 hours to complete the race.
Step-by-step explanation:
1. Take the number of miles and the average speed per mile
2. Multiply the distance by the speed; 11 1/4 x 7 1/2
4. Solve; 13 1/4 hours
5. Convert into decimals; 13.25 hours
Roberto'S puppy weighed 4.5 pounds at the end of May during June and July the puppy gained 18.63 pounds how much did Roberto's puppy weight at the at the end of July
Answer: 23.13 lbs
Step-by-step explanation:
Weight in May + Weight gained = Weight in July
4.5 + 18.63 =
23.13 =
NOTE: Make sure to line up the decimal point when adding decimals:
4.50
+ 18.63
23.13
What is the value of the function at x = 3?
Enter your answer in the box.
Answer:
4
Step-by-step explanation:
Recall a linear function, is a line on a graph made up of an infinite amount of points which satisfy the relationship. That means at x=3 there is a specific point on the line with an output. The value of a function at x=3 asks, what is the output y value for the input x value?
To find it, we locate 3 on the x-axis. We draw a vertical line directly to the line following the grid line. We mark the point on the line. We then draw a horizontal line directly to the y-axis following the grid line. The point we hit on the y-axis is the value of the function.
Here it is 4.
Answer:
4
Step-by-step explanation:
i took the test
divide. simplify your answer (2x^4-6x^3+4x^2-3x)*(2x) pls show work
Distribute
2x × 2x^4 + 2x × -6x^3 + 2x ×4x^2 + 2x × - 3x
Take out the constants
(2 × 2)xx^4 + 2x × -6x^3 + 2x × 4x^2 + 2x × -3x
Simplify 2 × 2 to 4
4xx^4 + 2x × -6x^3 + 2x × 4x^2 + 2x × -3x
Use Product Rule: x^a x^b = x^a + b
4x^1 + 4 + 2x × -6x^3 + 2x ×4x^2 + 2x × -3x
Simplify 1 + 4 to 5
4x^5 + 2x × -6x^3 + 2x × 4x^2 + 2x × -3x
Take out the constants
4x^5 + (2 × -6)xx^3 + 2x × 4x^2 + 2x × -3x
Simplify 2 × -6 to -12
4x^5 - 12xx^3 + 2x × 4x^2 + 2x × -3x
Use the Product Rule: x^a x^b = x^a + b
4x^5 - 12x^1 + 3 + 2x × 4x^2 + 2x -3x
Simplify 1 + 3 to 4
4x^4 - 12x^4 + 2x ×4x^2 + 2x × -3x
Take out the constants
4x^5 - 12x^4 + (2 × 4)xx^2 + 2x × -3x
Simplify 2 × 4 to 8
4x^5 - 12x^4 + 8xx^2 + 2x × -3x
Use the Product Rule: x^a x^b = x^a + b
4x^5 - 12x^4 + 8x^ 1 + 2 + 2x × -3x
Simplify 1 + 2 to 3
4x^5 - 12x^4 + 8x^3 + 2x × -3x
Take out the constants
4x^5 - 12x^4 + 8x^3 + (2 × -3)xx
Simplify 2 × -3 to -6
4x^5 - 12x^4 + 8x^3 - 6xx
Use the Product Rule: x^a x^b = x^a + b
4x^5 - 12x^4 + 8x^3 - 6x^2
Answer:
4x^5 - 12x^4 + 8x^3 - 6x^2
Step-by-step explanation:
1. Amanda tells you that because a variable is in the denominator, the equation three over x plus one over three equals five over six becomes unsolvable. Amanda explains, "There is a value for x that makes the denominator zero, and you can't divide by zero." Demonstrate to Amanda how the equation is still solvable and explain your reasoning.
2. When looking at the rational function f of x equals the quantity x minus one times the quantity x plus two times the quantity x plus four all divided by the quantity x plus one times the quantity x minus two times the quantity x minus four, Bella and Edward have two different thoughts. Bella says that the function is defined at x = –1, x = 2, and x = 4. Edward says that the function is undefined at those x values. Who is correct? Justify your reasoning.
Answer: x = 6
Step-by-step explanation:
[tex]\dfrac{3}{x}+\dfrac{1}{3}=\dfrac{5}{6}[/tex]
[tex](6x)\dfrac{3}{x}+(6x)\dfrac{1}{3}=(6x)\dfrac{5}{6}[/tex] multiplied by common denominator
18 + 2x = 5x
-2x -2x
18 = 3x
÷3 ÷3
6 = x
Since "x" is in the denominator, the restriction is that x ≠ 0. If the solution was x = 0, then the solution would not be valid and would be eliminated as an answer.
Remember that "x" is just an unknown value. It is possible to add two fractions together and have their sum be a fraction.
For example: [tex]\dfrac{1}{5} + \dfrac{2}{5} = \dfrac{3}{5}[/tex] could be written as [tex]\dfrac{1}{5} + \dfrac{2}{x} = \dfrac{3}{5}[/tex]. When we solve it, we will get x = 5.
******************************************************************************************
Answer: Edward
Step-by-step explanation:
[tex]f(x)=\dfrac{(x-1)(x+2)(x+4)}{(x+1)(x-2)(x-4)}[/tex]
The denominator cannot equal zero, so:
x + 1 ≠ 0 → x ≠ -1x - 2 ≠ 0 → x ≠ 2x - 4 ≠ 0 → x ≠ 4Those x-values are the asymptotes, which is where the function is undefined.
Write a function rule for the given graph identify the value of y when x=12
write out the steps
Answer:
y=8
Step-by-step explanation:
We need to find the equation for the line.
The first step is to find the slope
We need 2 points (0,2) (2,3)
slope = (y2-y1)/(x2-x1)
= (3-2)/(2-0)
= 1/2
We know the y intercept ( where it crosses the y axis) at 2
Lets use the slope intercept form of the line
y= mx+b
y = 1/2 x+2
If we want to find the value of y when x =12 , substitute the value of x=12
y =1/2 * 12 +2
y = 6+2
y=8
What is the y-intercept of f(x)=-X^3+3x^2+1?
A spherical scoop of ice cream with a diameter of 8 cm rests on top of a sugar cone that is 12 cm deep and has a diameter of 8 cm. What percent of the ice cream must be eaten to insure it does not overflow the cone when it melts?
Answer: 25% of the ice cream must be eaten to insure it does not overflow the cone when it melts.
Step-by-step explanation:
1. You must calculate the area of spherical scoop of ice cream with the following formula for calculate the volume of a sphere:
[tex]Vs=\frac{4}{3}r^{3}\pi[/tex]
Where [tex]r[/tex] is the radius ([tex]r=\frac{8cm}{2}=4cm[/tex])
[tex]Vs=\frac{4}{3}(4cm)^{3}\pi=268.08cm^{3}[/tex]
2. Now, you need to calculate the volume of the sugar cone with the following formula:
[tex]Vc=\frac{1}{3}r^{2}h\pi[/tex]
Where [tex]r[/tex] is the radius ([tex]r=\frac{8cm}{2}=4cm[/tex]) and [tex]h[/tex] is the height ([tex]h=12cm[/tex]):
[tex]Vc=\frac{1}{3}(4cm)^{2}(12cm)\pi=201.06cm^{3}[/tex]
3. When the ice cream melt, the percent of the cone that will be filled is:
[tex]P_f=(\frac{201.06cm^{3}}{268.08cm^{3}})100=75[/tex]%
4. Therefore, the percent of the ice cream that must be eaten to insure it does not overflow the cone when it melts, is:
[tex]P_e=100[/tex]%[tex]-75[/tex]%
[tex]P_e=25[/tex]%
Final answer:
To ensure the melted ice cream does not overflow the cone, 75% of the ice cream must be eaten. This is calculated by finding the volumes of the ice cream sphere and the cone and comparing them to get the percentage that can fit into the cone without overflowing.
Explanation:
The student's question involves determining what percent of a spherical scoop of ice cream (with a diameter of 8 cm) must be eaten to ensure it does not overflow a sugar cone (also with a diameter of 8 cm and 12 cm deep) when the ice cream melts. The ice cream and the cone have the same diameter, so they have the same base area. To prevent overflow, the volume of the melted ice cream must be less than or equal to the volume of the cone.
To solve this, we must first calculate the volume of the spherical scoop of ice cream, which can be determined using the formula for the volume of a sphere: V = (4/3)πr³. Subsequently, we need to calculate the volume of the cone using the formula for the volume of a cone: V = (1/3)πr²h. We shall compare these volumes to find out the percentage of ice cream that must be eaten.
Let's calculate the volume of the sphere (ice cream):
V_s = (4/3)π(4 cm)³ = (4/3)π(64 cm³) = 256π/3 cm³
Now let's calculate the volume of the cone:
V_c = (1/3)π(4 cm)²(12 cm) = (1/3)π(16 cm²)(12 cm) = 64π cm³
To prevent overflow, the volume of melted ice cream should be the same or less than the volume of the cone. Therefore, the portion which would fit into the cone without overflowing when melted is:
percent = (V_c / V_s) × 100 = (64π / 256π/3) × 100 = 75%
This means that 75% of the ice cream must be eaten to ensure it does not overflow the cone when it melts.
Please answer this question correctly!!
f(x) + n - translate the graph n units up
f(x) - n - translate the graph n units down
f(x + n) - translate the graph n units left
f(x - n) - translate the graph n units right
|f(x)| - reflect over x-axis for x < 0.
[tex]f(x)=|x+2|-5[/tex]
Graph g(x) = x
g(x + 2) = x + 2 → translate 2 units left
|g(x + 2)| = |x + 2| → reflect over x-axis for x < 0
|g(x + 2)| - 5 = |x + 2| - 5 → translate 5 units down
It takes terrel 69 minutes to weed his garden if he does it every 2 weeks, while his wife can get it done in 49 minutes. How long would it take them working together? Round to the nearest tenth of a minute
Answer: 28.7 minutes
Step-by-step explanation:
Terrel: [tex]\dfrac{1}{69}[/tex] of job per minute
Wife: [tex]\dfrac{1}{49}[/tex] of job per minute
Together: [tex]\dfrac{1}{x}[/tex] of job per minute
Terrel + Wife = Together
[tex]\dfrac{1}{69}+\dfrac{1}{49}=\dfrac{1}{x}[/tex]
[tex]\dfrac{1}{69}(69*49*x)+\dfrac{1}{49}(69*49*x)=\dfrac{1}{x}(69*49*x)[/tex]
49x + 69x = 69 * 49
118x = 3381
x = 28.7
Please help me out, I really could use it
Answer:
No real solutions
129
Step-by-step explanation:
The quadratic formula is
-b ± sqrt(b^2 -4ac)
----------------------------
2a
3x^2 =2x-1
Lets get the equation in proper form
3x^2 -2x+1 = 2x-1-2x+1
3x^2 -2x+1 =0
a=3 b=-2 c=1
Lets substitute what we know
2 ± sqrt((-2)^2 -4(3)(1))
----------------------------
2(2)
-2 ± sqrt(4-12)
----------------------------
2(2)
-2 ± sqrt(-8)
----------------------------
4
No real solutions
The quadratic formula is
-b ± sqrt(b^2 -4ac)
----------------------------
2a
2x^2 -10= 7x
Lets get the equation in proper form
2x^2 -7x-10 = 7-7x
2x^2 -7x-10 =0
a=2 b=-7 c=-10
Lets substitute what we know, we are only looking for what is inside the radical
(b^2 -4ac)
((-7)^2 -4(2)(-10))
(49 +80)
129
Right triangle ABC has side lengths 3,4 and 5. Do the side lengths form a Pythagorean triple? Explain.
Answer:
Yes, the side lengths of ΔABC forms a Pythagorean triple
Step-by-step explanation:
Given : A right angled triangle ABC
Side lengths - 3,4 and 5
To Find: . Do the side lengths form a Pythagorean triple?
Solution :
Hypotenuse (longest side) = 5
To check we need to use Pythagoras theorem :
[tex]Hypotenuse^{2} =Perpendicular^{2} +Base^{2}[/tex]
[tex]5^{2} =3^{2} +4^{2}[/tex]
[tex]25 =9 +16[/tex]
[tex]25 =25[/tex]
Since Pythagoras theorem is verified . So, the side lengths form the Pythagorean triplet.
Hence the side lengths of ΔABC forms a Pythagorean triple
The Ebbinghaus model of human memory may be used to model the amount of acquired knowledge a college student will retain after “cramming” for a final exam. The formula is p=(100-a)e^-b(0.07), where a and b vary from one person to another, and p is the percent of retained knowledge 1/2 day later when the student actually takes the final exam. If a = 20 and b = 1.2 for a typical student, how much of their “crammed” knowledge will that student retain at the moment of taking the final exam?
Answer: 73.55%
Step-by-step explanation:
p = (100-a) e^-b(0.07)
we have a = 20 and b =1.2
= (100-20) e^-(1.2)(0.07)
= 80(e^-0.084)
= 80(0.919431)
= 73.55%
Answer:
The correct answer is 93.6%
Step-by-step explanation:
Got it right on Edge 2020
In 2000, Ohio's population was 11.4 million and and increasing by 0.5 million each year. Michigan's population was 9.9 million, increasing by 0.6 million each year. When will the two years have the same population? Let y represent the number of years.
Answer:-
[tex]11.4 + 0.5y = 9.9 + 0.6y[/tex] , then the two states have the same population.
Step-by-step explanation:
Let y represents the number of years
As per the statement:
In 2000, Ohio's population was 11.4 million and and increasing by 0.5 million each year.
⇒ [tex]11.4 + 0.5y[/tex]
and
also, it is given that: Michigan's population was 9.9 million, increasing by 0.6 million each year.
⇒ [tex]9.9 + 0.6y[/tex]
When two states have the same population.
then the equation : [tex]11.4 + 0.5y = 9.9 + 0.6y[/tex].
Answer:
In 15 years the population will be same.
Step-by-step explanation:
Let y represent the number of years.
In 2000, Ohio's population was 11.4 million and and increasing by 0.5 million each year.
[tex]x=11.4+0.5y[/tex]
Michigan's population was 9.9 million, increasing by 0.6 million each year.
[tex]x=9.9+0.6y[/tex]
We have to tell that when will the two years have the same population, so we will put both equations equal.
[tex]11.4+0.5y=9.9+0.6y[/tex]
=> [tex]11.4-9.9=0.6y-0.5y[/tex]
=> [tex]0.1y=1.5[/tex]
So, y = 15
Therefore, in 15 years the population will be same.
In ∆PQR, PQ = 39 cm and PN is an altitude. Find PR if QN = 36 cm and RN = 8 cm.
Use the Pythagorean theorem two times:
[tex]NQ^2+NP^2=QP^2\\\\36^2+h^2=39^2\\\\1296+h^2=1521\qquad\text{subtract 1521 from both sides}\\\\h^2=225\to h=\sqrt{225}\\\\\boxed{h=15\ cm}[/tex]
second time:
[tex]PR^2=RN^2+NP^2\\\\x^2=8^2+15^2\\\\x^2=64+225\\\\x^2=289\to x=\sqrt{289}\\\\\boxed{x=17\ cm}[/tex]
Answer: PR = 17 cm.Answer:
17 cm
Step-by-step explanation:
We must first find the length of the height, PN. Since PN is an altitude, it makes a right angle with QR; this means that PNQ will be a right triangle, as will PNR. This means we will use the Pythagorean theorem:
a²+b² = c²
Letting h represent PR (since it is the height),
h²+36² = 39²
h²+1296 = 1521
Subtract 1296 from each side:
h²+1296-1296 = 1521-1296
h² = 225
Take the square root of each side:
√(h²) = √(225)
h = 15
PN is 15 cm.
Now we will use it and the other "base," RN, to find PR:
15²+8² = x²
225+64 = x²
289 = x²
Take the square root of each side:
√(289) = √(x²)
17 = x
Your mother asked you to turn the oven down to 325 degrees Fahrenheit This is 75 degrees fahrenheit less than it was. What was the original temperature
look at attachment 10 POINTS!!!
Answer:
The midpoint of TS is (-1,-3)
The coordinates of M should be (8,18)
Step-by-step explanation:
Please help simple math problem.
Answer:
the answer is x=5 for a fact
Step-by-step explanation:
Answer:
the answer would be x=5
BRAINLIEST AND 39 POINTS
How many different 4-digit personal identification numbers (PINs) can be made from the digit 0 through 9 if no digits repeat?
You have 10 numbers to choose from, and you're choosing 4 from that pool. Order of the numbers matters, because having 1234 as a PIN is not the same having it be 1324, so we're counting the number of permutations of 10 digits taken 4 at a time. So there are
[tex]4!\dbinom{10}4=4!C(10,4)=4!C^{10}_4=\dfrac{10!}{(10-4)!}=5040[/tex]
possible PINs that can be made.
Answer:
5,040 PINs
Step-by-step explanation:
From the vast numbers from 1 to 10, the numbers can amount to over 5,040 PINs. Having to use the following equation in the attachment below (also found in the other question), the vast amount of numbers can either amount to 5,040 PINs, or possibly over that amount.
You need to have 10 numbers to choose from.
I hope this helps!
math help please!!!!!!!!!!! will mark brainly
Answer:
B)3/8
Step-by-step explanation:
So there are 3 yellow or blue in total. So 3/8.
Answer:
3/8
Step-by-step explanation:
There are 8 pieces of equal size (and thus equal probability). 3 of them qualify as "success" (yellow or blue), so 3 out of 8 is the probability.
Paul bought a soft drink and a sandwich for $9.90. What equation may be used to find the price of each item if the sandwich cost 3.5 times as much as the soft drink? A) x = 9.90 B) 2x = 9.90 C) 3.5x = 9.90 Eliminate D) 3.5x + x = 9.90
Answer:
D
Step-by-step explanation:
The other ones don't make sense. The answer is 3.5x+x=9.90
plz no one ever helps me I need the answer
Which statement is TRUE about 131 ? A) It lies between 12 and 13 on a number line. B) It lies between 11 and 12 on a number line. C) It lies between 10 and 11 on a number line. D) It lies between 9 and 10 on a number line.
Answer:
B
Step-by-step explanation:
The square root of 131 is 11.445 and so it lies between 11 and 12 on a number line.
See where it goes on a number line below:-
Please answer both questions and show all your work. I am in a hurry... please...
1) To finish an order in time the company had to produce 40 items daily, but it produced 20 items more daily and finished the order 3 days ahead of time. In how many days was the company supposed to finish the order?
2) If eight people share equally in an inheritance, what percent of the inheritance belongs to three people? What percent belongs to them if two of the people are disinherited? By what percent does each person’s share of the inheritance increase?
Answer: 1) 9 days
2) a)37.5%
b)50%
c) 33.33%
Step-by-step explanation:
1) - Let's call:
x: number of days the company supposed to finish the order.
- You know that the company had to produce 40 items daily, but it produced 20 items more daily and finished the order 3 days ahead of time. Therefore, you can express this as following:
[tex]40x=(40+20)(x-3)\\40x=60(x-3)[/tex]
- Solve for [tex]x[/tex]:
[tex]40x=60x-180\\-20x=-180\\x=9[/tex]
(The answer is 9 days)
2) a) The percent that belongs to three people if eight eight people share equally in an inheritance, can be calculated as following:
[tex]\frac{3}{8}*100=37.5[/tex]%
b) The percent that belongs to three people if six people share equally in an inheritance (because two of the people are disinherited) can be calculated as following:
[tex]\frac{3}{6}*100=50[/tex]%
c) - The increase goes from 1/8 to 1/6, therefore, you must subtract them:
[tex]\frac{1}{6}-\frac{1}{8}=\frac{1}{24}=0.04167[/tex]
- Divide the result by 1/8 and multiply by 100 to obtain the percent:
[tex]\frac{0.04167}{\frac{1}{8}}*100=33.33[/tex]%
HELP please explain to me how to get this.
Which of the following represents a function?
Answer:
option A : graph is a function
Step-by-step explanation:
(a) option is given is a graph
For graph , the function should pass vertical line test
Draw vertical line for every value of x
The vertical lines cross only one red point at a time
So the graph is a function
(b) When each input has only one output then it is a function
in option B , input 3 has two output -5 and 0
so it is not a function
(c) in option C , input 3 has two output 14 and 19
so it is not a function
(d) in option d , input -1 has two output -11 and 5
so it is not a function
Anna baked 33 batches of cookies with cc cookies in each batch. She then ate 88 cookies! How many cookies does Anna have left?
Please help! 70 points :)
Will award brainliest
Answer:
38 = FH
Step-by-step explanation:
Because this is a rectangle, IG = FH
We know that IE + EG = FH
We also know that IE = EG (perpendicular bisectors)
IE = EG
3x+4 = 5x-6
Subtract 3x from each side
3x-3x+4 = 5x-3x-6
4 = 2x-6
Add 6 to each side
4+6 =2x
10 =2x
Divide by 2
10/2 =2x/2
5=x
Now lets find FH
IE + EG = FH
3x+4 + 5x-6 = FH
Combine like terms
8x-2 = FH
Substitute in x =5
8*5-2
40-2
38 = FH
Answer:
40-2
38 = FH
Step-by-step explanation:
what are the zeros of the polynomial functio ? f(x)=x^3+x^2-9x-9
Answer:
x = - 1
x1 = - 3
x2 = 3
Step-by-step explanation:
x^2(x + 1) - 9(x + 1) = f(x) x + 1 is a common factor
(x + 1) [ x^2 - 9] = f(x) factor x^2 - 9
(x + 1)(x - 3)(x + 3)
===============
x + 1 = 0
x = - 1
x - 3 = 0
x = 3
x + 3 = 0
x = - 3
====================
Answer
x = - 1
x1 = - 3
x2 = 3
Question:
What are the zeros of the polynomial function?
Step-by-step explanation:
Hope this helps!
144 flowers in a vase the ratio of yellow to pink flowers is 5 to 6 how many yellow flowers are in the vase
PLEASE HELP PLEASE PLEASE
Answer:
2.5 rad ( to the nearest tenth )
Step-by-step explanation:
the time difference between the given times is 24 minutes
In 1 hour the hand moves 2π radians, hence in 1 minute moves
[tex]\frac{2\pi }{60}[/tex], thus in 24 minutes moves
[tex]\frac{2\pi }{60}[/tex] × 24 ≈ 2.5 radians
In a recent election the new mayor received three votes for every vote received by her opponent. The new mayor received 2058 votes. How many votes did her opponent receive?
As per the given values, the opponent received 686 votes.
Explanation:Total votes received by Mayor = 2058.
To find out how many votes the opponent received, we need to determine the ratio of votes received between the new mayor and her opponent. Given that the new mayor received three votes for every vote received by her opponent, we can set up the equation:
3x = 2058
where x represents the number of votes received by the opponent. To solve for x, we divide both sides of the equation by 3:
x = 2058 ÷ 3
= 686
Therefore, the opponent received a total of 686 votes.
Learn more about Vote count here:https://brainly.com/question/30701353
#SPJ2
Write an equation of the line that passes through(0,4)and(0,-3)
[tex]\bf (\stackrel{x_1}{0}~,~\stackrel{y_1}{4})\qquad (\stackrel{x_2}{0}~,~\stackrel{y_2}{-3}) \\\\\\ slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{-3-4}{0-0}\implies \cfrac{-7}{0}\impliedby und efined[/tex]
when the slope of the points is undefined, is a flag that is a vertical line.
Check the picture below.
Hi there! :)
Step-by-step explanation:
[tex]Slope=\frac{Y_2-Y_1}{X_2-X_1}=\frac{RISE}{RUN}[/tex]
[tex]\frac{(-3)-4}{0-0}=\frac{-7}{0}=0[/tex]
Therefore, the slope is 0.
Undefined.
Final answer is 0.
I hope this helps you!
Have a nice day! :)
-Charlie
:D