Answer:
which of the following is the standard from of quadratic equation
NO LINKS!!!
5. Find the domain and range for the graph
Remember that
For a pair (x,y)
x is domainy is rangeSo
here
Domain:-
[-5,oo)As the function starts from -5 and tends to infinity .
Range:-
[-3,3)As the function starts from -3 but has an asymptote at y=3 .
Answer:
From inspection of the graph, it appears that the curve approaches y = 3 but never crosses it. Therefore, there could be an asymptote at y = 3.
Domain: input values (x-values) → [-5, ∞)
The x-values of the curve start at x = -5 and tends to infinity.
Range: output values (y-values) → [-3, 3)
The y-values of the curve start at y = -3 and appears to tend towards y = 3
Can someone please help me with this?
Answer:
65 mm²
Step-by-step explanation:
Total surface area of the prism = area of all parts of the prism's net
✔️Area of rectangle 1 with the following dimensions:
L = 5.2 mm
W = 2.1 mm
Area = 5.2*2.1 = 10.92 mm²
✔️Area of rectangle 1 with the following dimensions:
L = 5.2 mm
W = 4.5 mm
Area = 5.2*4.5 = 23.4 mm²
✔️Area of rectangle 3 with the following dimensions:
L = 5.2 mm
W = 5 mm
Area = 5.2*5 = 26 mm²
✔️Area of the 2 traingles with the following dimensions:
b = 4.5 mm
h = 2.1 mm
Area = ½*bh
= ½*4.5*2.1
= 4.725 mm²
Total surface area = 10.92 + 23.4 + 26 + 4.725 = 65.045 ≈ 65 mm² (nearesth while number)
If SA = 5x -8, AD = 2x, and SD = 4x + 7, find SD.
A
D
Answer:
SD = 27.
Step-by-step explanation:
It is given that,
SA = 5x-8
AD = 2x
SD = 4x+7
Note : A should be the mid point of S and D.
SD = SA+AD
Putting all the values,
4x+7=5x-8+2x
taking like terms together
4x-5x-2x=-8-7
-3x=-15
x = 5
The value of x is 5
Put x = 5 in SD = 4x + 7
So,
SD = 4(5) + 7
SD = 27 units
So, the value of SD = 27.
Students in a school were surveyed about their study habits. Forty-two percent of students said they study on weeknights and weekends, 47% said they studied on weekends, and 65% said they study either on weeknights or weekends. If you were to pick one student at random, what is the probability that he or she studies on a weeknight?
Answer:
0.6 = 60% probability that he or she studies on a weeknight.
Step-by-step explanation:
We solve this question treating these events as Venn probabilities.
I am going to say that:
Probability A: Probability of a student studying on weeknights.
Probability B: Probability of a student studying on weekends.
Forty-two percent of students said they study on weeknights and weekends
This means that \(P(A \cap B) = 0.42\)
47% said they studied on weekends
This means that \(P(B) = 0.47\)
65% said they study either on weeknights or weekends.
This is \(P(A \cup B) = 0.65\)
If you were to pick one student at random, what is the probability that he or she studies on a weeknight?
This is P(A), and the equation used is:
\(P(A \cup B) = P(A) + P(B) - P(A \cap B)\)
Considering the values we have:
\(0.65 = P(A) + 0.47 - 0.42\)
\(0.05 + P(A) = 0.65\)
\(P(A) = 0.6\)
0.6 = 60% probability that he or she studies on a weeknight.
Answer: 60% joaobezerra Is Right, and Confirmed by Buzz (Acceleration Education)
Step-by-step explanation:
We solve this question by treating these events as Venn probabilities. Forty-two percent of students said they study on weeknights and weekends. This means that 47% said they studied on weekends. This means that 65% said they study either on weeknights or weekends. This is If you were to pick one student at random, what is the probability that he or she studies on a weeknight?
0.6 = 60% that he or she studies on a weeknight.
Reduce the fraction below to their lowest term 70/3 =
Step-by-step explanation:
70 ÷ 3 = 23 1/3
10 + 3x < 4 or 2x + 5 > 11 in interval notation
Answer:
( − ∞ , ∞ ) hope i help
Step-by-step explanation:
First, solve each inequality. I'll solve the first one first.
7 ≥ 2 x − 5
12 ≥ 2 x
6 ≥ x
Therefore, x could be any number less than or equal to 6. In interval notation, this looks like:
( − ∞ , 6 ]
The parenthesis means that the lower end is not a solution, but every number above it is. (In this case, the lower end is infinity, so a parenthesis must be used, since infinity is not a real number and so it cannot be a solution.) The bracket means that the upper end is a solution. In this case, it indicates that not only could
x
be any number less than 6, but it could also be 6.
Let's try the second example:
3 x − 2 4 > 4
3 x − 2 > 16 3 x > 18 x > 6
Therefore, x could be any number greater than 6, but x couldn't be 6, since that would make the two sides of the inequality equal. In interval notation, this looks like:
( 6 , ∞ )
The parentheses mean that neither end of this range is included in the solution set. In this case, it indicates that neither 6 nor infinity are solutions, but every number in between 6 and infinity is a solution (that is, every real number greater than 6 is a solution).
Now, the problem used the word "OR", meaning that either of these equations could be true. That means that either x is on the interval ( − ∞ , 6 ] or the interval ( 6 , ∞ )
. In other words, x
is either less than or equal to 6, or it is greater than 6. When you combine these two statements, it becomes clear that
x
could be any real number, since no matter what number
x
is, it will fall in one of these intervals. The interval "all real numbers" is written like this:
( − ∞ , ∞ )
A rectangle is placed around a semicircle as shown below.
Answer:
Explanation:
Area of shaded region = Area of rectangle - area of semicircle
Considering the rectangle,
length = 6
width = 6/2 = 3
Area of rectangle = 6 x 3 = 18
The formula for calculating the area of a semicircle is expressed as
area of a semicircle = 1/2 x πr^2
where
r = radius
From the information given,
diameter = 6
radius = diameter/2 = 6/2
r = 3
π = 3.14
Area of semicircle = 1/2 x 3.14 x 3^2 = 14.13
Area of shaded region = 18 - 14.13
Area of shaded region = 3.87 ft^2
After 1 year, $500 deposited in a savings account with simple interest had earned $75 in interest. What was the interest rate?
\(~~~~~~ \textit{Simple Interest Earned} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\dotfill & \$ 75\\ P=\textit{original amount deposited}\dotfill & \$500\\ r=rate\to r\%\to \frac{r}{100}\\ t=years\dotfill &1 \end{cases} \\\\\\ 75 = (500)(\frac{r}{100})(1) \implies 75=5r\implies \cfrac{75}{5}=r\implies \stackrel{ \% }{15}=r\)
A company that sells paper has a tiered pricing model based on how much paper you buy. If you buy less than 10 reams, they charge you $7 per ream and a shipping cost of $8. If you buy 10 or more reams but less than 20 reams, they charge you $6 per ream and a shipping cost of $16. If you buy 20 or more reams, they charge you $6 per ream and shipping is free.
a. Write a function that models the price in terms of the number of reams bought.
b. What is the domain of the function?
c. What is the range of the function?
d. How much will it cost to buy 25 reams of paper?
f. How much paper can you buy for $60?
The function can be defined as price = 6x
It will cost $150 to buy 25 reams of paper.
How to explain the functionThe domain of the function is all non-negative real numbers, since the number of reams bought cannot be negative.
The range of the function is all non-negative real numbers, since the price cannot be negative.
Fir 25 items, price = 6(25) = $150
It will cost $150 to buy 25 reams of paper.
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Teceives an ) After giving two fifths of her coins to her sister, Thao receives another 4 coins for her birthday. She now has 16 coins. How many coins did she have originally?
The result is 16, which matches the information given in the problem. Thus, our solution is correct. Thao originally had 30 coins.
Let's solve this problem step by step.
Let's assume the number of coins Thao originally had is x.
According to the problem, Thao gives two fifths of her coins to her sister. Two fifths of x can be represented as (2/5)x.
After giving away two fifths of her coins, Thao receives 4 coins for her birthday. So, the number of coins she has now is (2/5)x + 4.
The problem states that she now has 16 coins. Therefore, we can set up the following equation:
(2/5)x + 4 = 16
To solve for x, we need to isolate x on one side of the equation. We can start by subtracting 4 from both sides:
(2/5)x = 16 - 4
(2/5)x = 12
To get rid of the fraction, we can multiply both sides of the equation by 5:
5 * (2/5)x = 5 * 12
2x = 60
Next, divide both sides of the equation by 2 to solve for x:
(2x)/2 = 60/2
x = 30
Therefore, Thao originally had 30 coins.
To verify our answer, we can substitute x = 30 back into the equation (2/5)x + 4 and see if it equals 16:
(2/5) * 30 + 4 = 12 + 4 = 16
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what statement is true about the expression 12 - 7 + 3
Answer:
The Answer is B
________________________
If this helped mark me as brainliest!
Hope you have a great day!
Answer:
We can first determine it is not A or C, because these flatly do not equal the expression above.
I believe is it D, because of the commutative property.
The associative property of addition states that you can group the addends in different ways without changing the outcome. While the commutative property of addition states that you can reorder the addends without changing the outcome.
In this case, we are rearranging the addends, not groups of them.
Step-by-step explanation:
What is the solution to |x-2| + 3 > 17?
Ox<-12 or x > 16
Ox<-14 or x>7
O-12
O-14
Answer:
x<-12 or x>16
Step-by-step explanation:
Answer:
|x - 2| + 3 > 17
|x - 2| > 14
x - 2 < -14 or x - 2 > 14
x < -12 or x > 16
HELP ASAP AND I KNOW ITS B OR C BUT I DUNNO WHAT ONE
What is the vertical distance between (7, –22) to (7, 12)?
–34 units
–10 units
10 units
34 units
Answer:
D
Step-by-step explanation:
since the x- coordinates of both points are 7 then the points lie on a vertical line.
the distance is then the absolute value of the difference of the y- coordinates, that is
distance = | - 22 - 12 | = | - 34 | = | 34 | = 34 units
or
distance = | 12 - (- 22) | = | 12 + 22 | = | 34 | = 34 units
Answer:
the vertical distance between (7, –22) to (7, 12) is 10 units
Area = 120 yd"
- 10 yd
Find the Height
Please help me
You measure 48 backpacks' weights, and find they have a mean weight of 70 ounces. Assume the population standard deviation is 6.4 ounces. Based on this, construct a 99% confidence interval for the true population mean backpack weight.
Give your answers as decimals, to two places
The 99% confidence interval for the true population mean backpack weight is approximately (68.15, 71.85) ounces, rounded to two decimal places.
To construct a 99% confidence interval for the true population mean backpack weight, we can use the formula:Confidence Interval = Sample Mean ± (Critical Value * Standard Deviation / √Sample Size).
Since the population standard deviation is known, we can use the z-distribution and find the critical value corresponding to a 99% confidence level. The critical value for a 99% confidence level is approximately 2.576.
Given that the sample mean weight is 70 ounces, the population standard deviation is 6.4 ounces, and the sample size is 48, we can calculate the confidence interval:
Confidence Interval = 70 ± (2.576 * 6.4 / √48).
Simplifying the expression, we get:
Confidence Interval ≈ 70 ± 1.855.
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A student bikes 5000 m East to school in 30.0 min (1800 seconds), realizes he forgot his calculator for physics, spends 30.0 min (1800 seconds) going back going home, and then races back to school in 27.0 minutes (1620 seconds).
What is the student’s total distance traveled?
_______ meters
The number of seconds it took the student to travel back and forth is ________
seconds.
Determine the student’s average speed. ________
m/s
The total distance covered is 15000 m. The total time taken is 5220 seconds and the speed is 2.87 m/s.
What is the speed?We know that speed has to do with the ratio of the distance that has been covered to the time taken. The speed is a scalar quantity and as such we do not consider the direction hence we would not consider that going back in the opposite direction. The total distance can be obtained algebraically.
The total distance that the student travelled can be obtained from;
5000 m + 5000 m + 5000 m
= 15000 m
The total time taken in seconds = 1800 seconds + 1800 seconds + 1620 seconds
= 5220 second
Speed = Distance/ Time
= 15000 m/5220 second
= 2.87 m/s
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IF U CAN HELP ME ILL BRAINIFY U AND U GET ALL MY POINTS. IT HAS TO BE A GOOD ANSWER, AS I THINKING I GOT THE CORRECT ANSWER, SO YOU CANT FOOL ME!!
Sherie makes a canvas frame for a painting using stretcher bars. The retuangular painting will be 12 inches long and 9 inches wide. What should be the diagonal length of the painting in Sherie's question? Record your numerical response. Do not include words, units or spaces
it would be 15 in. diagonal
You are a contestant on a game show called “Bargain or No Bargain.” You are presented with three briefcases, which contain rewards of $700,000, $1,000, and $100. The host of the show says you can either open one random case and keep the amount inside, or you can accept a guaranteed award of $240,000. What is the mathematically correct decision, and why?
A.
Take the $240,000, because it is greater than the expected value of the briefcases.
B.
Choose a briefcase, because the expected value is greater than $240,000.
C.
Choose a briefcase, because the expected value is less than $240,000.
D.
Take the $240,000, because it is less than the expected value of the briefcases.
please help me with explanation
Answer:
Step-by-step explanation:
A container is leaking 1 liter every 3/4 hour.How many liters will it leak in 3 3/4 hours
solve quadratic inequality x^2+4x≥0
Answer:
Step-by-step explanation:
y = x² + 4x is an up-opening parabola with x-intercepts 0 and -4.
y ≥ 0 when x≤-4 or x≥0
range: (-∞,-4)∪[0,+∞)
Write each fraction or mixed number as a number as a decimal 7/10
I just want the answer
Answer:
0.7 is 7/10 as a decimal
okkkk
The ratio of top dogs to fat cats was 24 to 19. if they were 152 fat cats, how many top dogs were there?
The ratio shows how many times one value is contained in another value.
The number of top dogs is 192.
What is a ratio?The ratio shows how many times one value is contained in another value.
Example:
There are 3 apples and 2 oranges in a basket.
The ratio of apples to oranges is 3:2 or 3/2.
We have,
The ratio of top dogs to fat cats was 24 to 19.
if they were 152 fat cats.
This means,
Number of top dogs = 24x
Number of fat cats = 19x
Now,
Number of fat cats = 152
This means,
152 = 19x
x = 8
Now,
Number of top dogs = 24x
= 24x
= 24 x 8
= 192
Thus,
The number of top dogs is 192.
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What is the distance from Point A (3, 8) and Point B (11,2)
9
B 10
C
11
O D. 12
Answer:
10
Step-by-step explanation:
Para un experimento se colocan cierta cantidad de mujeres y hombres en una habitación, si
se sabe que la cantidad de mujeres supera a los hombres en 30, y la cantidad de personas
dentro de la habitación es de 134, la cantidad de hombres que se encuentran dentro de la
habitación es de
Every day a kindergarten class chooses randomly one of the 50 state flags to hang on the wall, without regard to previous choices. We are interested in the flags that are chosen on Monday, Tuesday and Wednesday of next week. 30 Experiments with random outcomes (a) Describe a sample space ± and a probability measure P to model this experiment. (b) What is the probability that the class hangs Wisconsin’s flag on Monday, Michigan’s flag on Tuesday, and California’s flag on Wednesday? (c) What is the probability that Wisconsin’s flag will be hung at least two of the three days?
Answer:
a) \(S=50\)
\(P(X)=0.02\)
b) \(P(W,M,C)=8*10^-^6\)
c) \(P(W_2_3)=1.18*10^-^3\)
Step-by-step explanation:
From the question we are told that
Sample space S=50
Sample size n=30
a)Generally the sample space S is
\(S=50\)
The probability measure is given as
\(P(X)=\frac{1}{50}\)
\(P(X)=0.02\)
b)
Generally the probability that the class hangs Wisconsin’s flag on Monday, Michigan’s flag on Tuesday, and California’s flag on Wednesday is mathematically given as
Probability of each one being hanged is
\(P(X)=\frac{1}{50}\)
Therefore
\(P(W,M,C)=\frac{1}{50} *\frac{1}{50}* \frac{1}{50}\)
\(P(W,M,C)=\frac{1}{125000}\)
\(P(W,M,C)=8*10^-^6\)
c)Generally the probability that Wisconsin’s flag will be hung at least two of the three days is mathematically given as
Probability of two days hung +Probability of three days hung
Therefore
\(P(W_2_3)=^3C_2 (1/50) * (1/50) * (49/50) +^3C_3 (1/50) * (1/50) *(1/50)\)
\(P(W_2_3)=148 / 125000\)
\(P(W_2_3)=1.18*10^-^3\)
$100,000 is shared among three friends, Anna, Louise and Lacey in the ratio.7: 10:13 respectively. Calculate the amount each receives.
Answer:
Step-by-step explanation:
Set up an equation:
7x + 10x + 13x = 100000 and solve for x:
30x = 100000 so
x = 3333.33
Anna gets 7(3333.33) = 23333.31
Louise gets 10(3333.33) = 33333.33
Lacey gets 13(3333.33) = 43333.29
Jessica goes out to eat at a restaurant. The meal costs $18.40, and Jessica wants to leave a tip that is StartFraction 3 over 20 EndFraction of the cost of the meal. How much should Jessica leave for the tip?
Answer:
$20.00
Step-by-step explanation:
Answer:
20.00 trust me
Step-by-step explanation:
y=-0.024x^2+0.0791x+4.873
The equation y = \(-0.024x^2\) + 0.0791x + 4.873 represents a quadratic function with a downward-opening parabol
The given expression is a quadratic equation in the form y = -0.024x^2 + 0.0791x + 4.873. Let's analyze its components and characteristics.
The equation represents a quadratic function, where x is the independent variable and y is the dependent variable. The coefficients in front of each term determine the shape, position, and direction of the graph.
The term with the highest power of x is -0.024x^2, which indicates a downward-opening parabola. The coefficient -0.024 determines the steepness of the curve. A negative coefficient means the parabola is concave down.
The term 0.0791x is the linear term and determines the slope of the line. A positive coefficient indicates an upward or positive slope. It affects the overall direction and position of the graph.
The constant term 4.873 is the y-intercept. It indicates the point at which the graph intersects the y-axis when x = 0.
To analyze the graph of the quadratic equation further, we can calculate the vertex. The x-coordinate of the vertex can be found using the formula x = -b/(2a), where a and b are the coefficients of x^2 and x, respectively. In this case, a = -0.024 and b = 0.0791. Substituting these values into the formula, we have x = -0.0791 / (2 * -0.024) ≈ 1.643. By substituting this x-coordinate into the equation, we can find the y-coordinate of the vertex.
Overall, the equation y =\(-0.024x^2 + 0.0791x\) + 4.873 represents a quadratic function with a downward-opening parabola. The specific properties, such as the vertex and other key points, can be determined by further calculations and analysis of the equation.
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I need help with this homework question please and thankyou
The formula for continuously compounded interest is
\(\begin{gathered} A=Pe^{rt} \\ \text{ Where }A\text{ is the Amount or future value} \\ P\text{ is the Principal, or initial value} \\ r\text{ is the interest rate, and} \\ t\text{ is the time} \end{gathered}\)So, in this case, we have
\(\begin{gathered} A=\text{ \$}1,000 \\ P=\text{ \$}200 \\ r=4\text{\% }=\frac{4}{100}=0.04 \\ t=\text{ ?} \end{gathered}\)\(\begin{gathered} A=Pe^{rt} \\ \text{ Replace the know values} \\ \text{\$}1,000=\text{\$}200\cdot e^{0.04t} \\ \text{ Divide by \$200 from both sides of the equation} \\ \frac{\text{\$}1,000}{\text{\$}200}=\frac{\text{\$}200\cdot e^{0.04t}}{\text{\$}200} \\ 5=e^{0.04t} \\ \text{ Apply natural logarithm to both sides of the equation} \\ \ln (5)=\ln (e^{0.04t}) \\ \ln (5)=0.04t \\ \text{ Divide by 0.04 from both sides of the equation} \\ \frac{\ln(5)}{0.04}=\frac{0.04t}{0.04} \\ \boldsymbol{40.2\approx t} \end{gathered}\)Therefore, it will take approximately 40 years for the account to reach $1,000.