all you need is on the photo please just give me the answer don't do step-by-step is so confusing is homework
Answers
You have the following function:
f(x) = x² - x
- In order to determine the vertex of the function, consider that for the general form of a quadratic function:
f(x) = ax² + bx + c
the value of x at the vertex is:
x = -b/2a
for the given function you have a = 1, b = -1, c =0:
x = -(-1)/2(1) = 1/2 = 0.5
next, replace the previous value of x into the function:
f(1/2) = (1/2)² - (1/2) = 1/4 - 1/2 = -1/4 = -0.25
Hence, the vertex is (0.5 , -0.25)
- The axis of symmetry is the value of x atthe vertex:
x = 0.5
- The x-intercepts are the zeros of the function:
x² - x = 0 by factorizing
x(x - 1) = 0
Then, the zeros are:
x =0
x = 1
Hence, the x-intercepts are x=0 and x=1
- Due to the coefficient a is positive and the term ax² is the dominant term, this curve has a minimum. This minimum is the vertex (0.5 , -0.25)
- The minimum value of the function is -0.25
- The y-intercept is the value of y when x=0:
f(0) = 0² - 0 = 0
Related Questions
If y varies jointly as x and z when x = 5, y = 80, and z = 8. what is y when x = 16 and z = 2?
Answers
We are given that y varies jointly as x and z
Mathematically,
[tex]y=kxz[/tex]Where k is the constant of proportionality.
When x = 5, y = 80, and z = 8
[tex]\begin{gathered} y=kxz \\ 80=k\cdot5\cdot8 \\ k=\frac{80}{5\cdot8} \\ k=2 \end{gathered}[/tex]So, the relationship becomes
[tex]y=2xz[/tex]What is y when x = 16 and z = 2?
[tex]\begin{gathered} y=2xz \\ y=2\cdot16\cdot2 \\ y=64 \end{gathered}[/tex]Therefore, the value of y is 64
A clock takes 12 seconds to strike 4. How long does it take to strike 12?
Answers
36 seconds
working out:
•4= 12 seconds
and 4x3=12
so if you do 12x3 it’s 36
Answer If the answer is not 36 you have to look at the way the sentence is structured . Time is taken between hours not on them The answer should be 44. To go on 4 it takes four strikes on three spots that take a total of 12 secs and four per space
So the answer should be 44
How many units can be obtained from f(x) =|x+7|−6 if the graph has been shifted down and left?
Answers
The translation we need to get f(x) is a translation of 7 units to the left and 6 units down.
Which shift do we have here?I assume we want to identify the transformation that we need to apply to the parent absolute value function |x| in order to get f(x).
Remember that a horizontal translation of N units and a vertical translation of M units is written as:
y = |x - N| + M
In this case we have:
f(x) = |x + 7| - 6
Comparing it with the formula above, we get:
N = -7
M = -6
This means that we have a translation of 7 units to the left, and 6 units down.
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Please help and provide explanation I want to understand this!
Answers
We will have to find the equation that follows the form:
[tex]a+bx=y[/tex]That is:
*The value of a is:
[tex]a=547.4666667[/tex]*The value of b is:
[tex]b=29.91428571[/tex]So, the linear regression is:
[tex]y=29.91428571x+547.4666667[/tex]We can see it graphically as follows:
Here we can see the linear regression line and the points used.
***How to manually determine linear regressions***
We will start as follows:
We will have to use the following expressions in order to manually find the linear regression:
[tex]b=\frac{n(\sum^{}_{}xy)-(\sum^{}_{}x)(\sum^{}_{}y)}{n(\sum^{}_{}x^2)-(\sum^{}_{}x)^2}[/tex]And:
[tex]a=\frac{\sum ^{}_{}y-b(\sum ^{}_{}x)}{n}[/tex]Here we have that n is the number of values on the dataset. So, we solve for b as follows [Based on the problem given]:
*We will determine the values of n, the sum of x, the sum of y, xy, x^2 & y^2 as follows:
Sum of x:
[tex]\sum ^{}_{}x=1+2+3+4+5+6\Rightarrow\sum ^{}_{}x=21[/tex]Sum of y:
[tex]\sum ^{}_{}y=588+298+640+650+707+730\Rightarrow\sum ^{}_{}y=3913[/tex]Value of n: We have that the number of datasets given is 6 [6 pairs of values on the table].
[tex]n=6[/tex]*The sum of xy:
[tex]\sum ^{}_{}xy=(1)(588)+(2)(598)+(3)(640)+(4)(650)+(5)(707)+(6)(730)\Rightarrow\sum ^{}_{}xy=14219[/tex]*The sum of X^2:
[tex]\sum ^{}_{}x^2=1^2+2^2+3^2+4^2+5^2+6^2\Rightarrow\sum ^{}_{}x^2=91[/tex]*The square of the sum of x:
[tex](\sum ^{}_{}x)^2=21^2\Rightarrow(\sum ^{}_{}x)^2=441[/tex]Now that we have all the values, we replace in the first equation and solve for b:
[tex]b=\frac{(6)(14219)-(21)(3913)}{(6)(91)-(441)}\Rightarrow b=29.91428571[/tex]And we solve now for a:
[tex]a=\frac{(3913)-(29.91428571)(21)}{(6)}\Rightarrow a=548.4666667[/tex]And then we simply replace on the expression:
[tex]y=bx+a[/tex]And the expression after the replacement of a & b is the linear regression.
subtract P - 2 q + r from the sum of 10 P - R and 5 p + q
Answers
Answer:
14p +4q-2r
Step-by-step explanation:
Sum of (10p-r+5p+2q)
10p+5p+2q-r
15p+2q-r
Now subtract( p-2q+r) from (15p+2q-r)
(15p+2q-r) - (p-2q+r)
15p+2q-r-p+2q-r
15p-p+2q+2q-r-r
14p +4q-2r
The answer is 14p +4q-2r
Convert the following point from polar to Cartesian coordinates. Write the exact answer as an ordered pair. Do not round.(s. - 2)5.2.3
Answers
Answer::
[tex](-2.5,-2.5\sqrt{3})[/tex]Explanation:
Given the point in polar coordinate:
[tex]\left(5,-\frac{2\pi}{3}\right)[/tex]To convert to Cartesian coordinates, use the formula below:
[tex](x,y)=(r\cos\theta,r\sin\theta)[/tex]Thus:
[tex]\begin{gathered} (x,y)=\left(5\cos\left(-\frac{2\pi}{3}\right),5\sin\left(-\frac{2\pi}{3}\right)\right) \\ =\left(5\times-\frac{1}{2},5\times-\frac{\sqrt{3}}{2}\right) \\ =(-2.5,-2.5\sqrt{3}) \end{gathered}[/tex]The Cartesian coordinates are:
[tex](-2.5,-2.5\sqrt{3})[/tex]If sin 0
=
40/41 and lies in Quadrant I, what does tan theta equal to?
Answers
answer of this trigonometric function is 4.49
what is trigonometric function?
The trigonometric functions are real functions that connect the angle of a right-angled triangle to the ratios of its two side lengths. They are also known as circular functions, angle functions, or goniometric functions.
LETS ASSUME Given sinθ= 40/41
tan(θ)= sinθ/[tex]\sqrt{1-sin^{2} (theta) }[/tex]....(1)
putting sin theta value in (1)
⇒tan(θ)= 4.49
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g+3 1/2=10 answer to g
Answers
Answer:
Exact form: G = 12/2
decimal form: G = 6.5
At an aquarium, researchers are preparing a mixture of salt water. The desired ratio is 90 grams of salt per liter of water.1 ounce= 28.35 grams1 gallon= 3.8 literswhat is the ratio in ounces per gallon
Answers
Based on the question, the ratio of the salt mixture is:
[tex]\frac{90grams}{1\text{liter}}[/tex]So, if we have 3.8 liters in 1 gallon, we would need 90grams x 3.8 = 342 grams of salt in 1 gallon.
[tex]\frac{90grams}{1\text{liter}}\times\frac{3.8liters}{1\text{gal}}=\frac{342grams\text{ }}{1gal}[/tex]The next step is to determine how many ounces are there in 342 grams. If 1 ounce = 28.35 grams, then 342 grams divide 28.35 grams = 12.06. Hence, in 342 grams, there are 12.06 ounces.
Thus, we can say that:
[tex]\frac{342\text{grams}}{1\text{gal}}=\frac{12.06\text{ounces}}{1\text{gal}}[/tex]The ratio of the salt mixture is 12.06 ounces per gallon.
First Drop down: Yes or NOSend drop down: is or is not
Answers
Looking at the number line, the length between 0 and 1 is not divided into 3 equal parts. Hence, the answer is no. Victoria is not correct.
First drop-down: No
Second drop-down: is not
Mai works a total of 31 hours per week at two jobs. The number of hours she works at a coffee stand is 5 less than 2 times the number of hours she works at the animal shelter. How many hours does Mai work at the animal shelter?
Show the equation you use and your work solving the equation.
Answers
Answer:
12
Step-by-step explanation:
Let x = number of hours at the shelter
"The number of hours she works at a coffee stand is 5 less than 2 times the number of hours she works at the animal shelter."
The number of hours at the coffee stand is
2x - 5
The total number of hours is 31, so x added to 2x - 5 must equal 31.
2x - 5 + x = 31
3x - 5 = 31
3x = 36
x = 12
She works 12 hours at the shelter.
help me please
thank you
Answers
Answer:
Domain: [tex](-\infty, \infty)[/tex]
Range: [tex](-\infty, 4][/tex]
Step-by-step explanation:
The domain is the set of x-values and the range is the set of y-values.
Define an exponential function, h(x), which passes through the points (1,16) and(5, 1296). Enter your answer in the form a*b^xh(x) =
Answers
We want the answer in exponential form:
[tex]h(x)=a\cdot b^x[/tex]where a and b are the constants to be determined. We can find a and b by substituting the given points and construct a system of equatons, that is, by replacing point (1,16) we have
[tex]\begin{gathered} 16=a\cdot b^1 \\ so \\ 16=a\cdot b \end{gathered}[/tex]and by substituting point (5,1296), we get
[tex]1296=a\cdot b^5[/tex]Then, we have 2 equations in 2 unknonws:
[tex]\begin{gathered} a\mathrm{}b=16 \\ a\mathrm{}b^5=1296 \end{gathered}[/tex]By isolating a from the first equation and substituting this result into the second one, we get
[tex]\begin{gathered} (\frac{16}{b})b^5=1296 \\ \end{gathered}[/tex]which gives
[tex]\begin{gathered} 16b^4=1296 \\ b^4=\frac{1296}{16} \\ b^4=81 \\ b=\sqrt[4]{81} \\ b=3 \end{gathered}[/tex]Then, by substituting this result into the first equation of our system, we obtain
[tex]\begin{gathered} a\cdot3=16 \\ \text{then} \\ a=\frac{16}{3} \end{gathered}[/tex]Therefore, the answer is
[tex]h(x)=\frac{16}{3}\cdot(3)^x[/tex]Tyler’s monthly allowance is $42 dollars and Jeremiah’s allowance is $63. How many times Jeremiah’s monthly allowance is Tyler’s monthly allowance?
Answers
State whether the function is a polynomial function or not. If it is, give its degree. If it is not, tell why not.A No; it is a ratioBYes; degree 1CNo; x is a negative termDYes; degree 4
Answers
Given:
The function is,
[tex]\frac{8-x^4}{9}[/tex]It can be written as,
[tex]\frac{8}{9}-\frac{x^4}{9}[/tex]Polynomial is a combination of terms seperated using + and - sign which does not contain,
1) Variable in demominator
2) Variables under radical
3) special features like trigonometric function, absolute values etc.
So, it shows that the given function is polynomial with degree 4.
Answer: option D)
Please help with math problem FAST
Answers
The Rodriguez family has a fixed incomeof $4,000 a month. Their fixed expensesare $1,800 a month. They save at leastone fourth of the remaining income eachmonth. What is the minimum amountsaved by the Rodriguez family in a year?
Answers
we know that
The Rodriguez family has a fixed income of $4,000 a month.
Their fixed expenses are $1,800 a month
so
The remaining amount in a month is
4,000-1,800=$2,200
The one fourth of the remaining income is
(1/4)(2,200)=$550
To find out the minimum amount in a year, multiply $550 by 12
550*(12)=$6,600
therefore
the answer is$6,600For a standard normal distribution, given:
P(z < c) = 0.9663
Find c.
Answers
The value of c for a standard normal distribution, P(z < c) = 0. 9663 is 0.47.
What is standard normal distribution?
The standard normal distribution table gives the probability of a regularly distributed random variable Z, whose mean is equivalent to 0 and difference equal to 1, is not exactly or equal to z. The normal distribution is a persistent probability distribution.
What is z score?
Z score is used to determine by how many standard deviations the raw score is above or below the mean. It is given by
z = (x - μ)/σ
Where x is the raw score, μ is the mean and σ is the standard deviation.
Given that P(z < c) = 0. 9663; hence:
From the normal distribution table, c = 0.47
The value of c for a standard normal distribution, P(z < c) = 0. 9663 is 0.47.
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what is the greatest common factor of 18 and 24 with 18/24 in the simplest form i do not understand how to do this
Answers
Answer:
Greatest common factor: 6
The simplest form of 18/24 = 3/4
Explanation:
First, we need to identify the factors of 18 and 24. The factors are the numbers that divide 18 and 24.
Factors of 18: 1, 2, 3, 6, 9, 18
Factors of 24: 1, 2, 3, 4, 6, 8, 12, 24.
Then, the common factors are: 1, 2, 3, and 6
Finally, the greatest common factor is 6.
On the other hand, if we want to write 18/24 in the simplest form, we need to divide both numbers by the greatest common factor, so:
[tex]\frac{18\div6}{24\div6}=\frac{3}{4}[/tex]So, 18/24 in the simplest form is 3/4
Slope: -1
Point 3,-5
Answers
y=-x-2
Slope is -1
y intercept is -2
You draw one card from a 52-card deck. Then the card is replaced in the deck and the deck is shuffled, and you draw again. Find the probability of drawing a nine the first time and a heart the second time
Answers
SOLUTION:
Step 1:
In this question, we are given the following:
You draw one card from a 52-card deck.
Then the card is replaced in the deck and the deck is shuffled, and you draw again.
Find the probability of drawing a nine the first time and a heart the second time
Step 2:
From the question, we can see that the probability of drawing a nine the first time and a heart the second time is:
[tex]\frac{4}{52\text{ }}\text{ x }\frac{13}{52}=\text{ }\frac{52}{52\text{ x 52}}=\frac{1}{52}[/tex]CONCLUSION:
The probability of drawing a nine the first time and a heart the second time is:
[tex]\frac{1}{52}[/tex]
Usqqe format HTH to mean that the first toss is heads, the second is tails and the third is heads more than one element in the set, separate them with commas
Answers
SOLUTION
Given the question in the image, the following are the solution steps to answer the question.
STEP 1: State the number of outcomes possible for three tossing of a coin
Since a coin has two possible outcomes and is tossed three times, the total outcomes will be:
[tex]\begin{gathered} 2^3=8 \\ 8\text{ outcomes} \end{gathered}[/tex]STEP 2: Find the number of sample spaces for the three tosses
STEP 3: Get the outcomes of the events for which the second toss is tails
Hence, the answers are given as:
Sample Space:
[tex]\lbrace HHH,HHT,HTH,HTT,THH,THT,TTH,TTT\rbrace[/tex]The event that the second toss is tails:
[tex]\lbrace HTH,HTT,TTH,TTT\rbrace[/tex]3.5.3 Test (CST): Functions Does this graph show a function? Explain how you know. 66 PE -2 E C N 6 8 A. No; there are y-values that have more than one x-value. B. Yes; the graph passes the vertical line test. C. Yes; there are no y-values that have more than one x-value. D. No; the graph fails the vertical line test. here is the answer for the people who need it
Answers
Which expressions are equal to 10^5? ☐ (10^4)¹ 10³x10² 1/10^5 (10³) ² 10x10x10x10x10
Answers
Using the rule of exponents, the only expressions that are equal to 10⁵ are; 10³x10² and 10x10x10x10x10
How to use Laws of Exponents?
The laws of exponents are as follows;
1) The Product Rule for Exponents: To get the product of two numbers that have the same base, ensure you add the exponents.
2) The Quotient Rule for Exponents: To get the quotient of two numbers that have the same base, ensure that you subtract the exponent of the denominator from the exponent of the numerator.
3) The Power Rule for Exponents: To raise a number with an exponent to a power, ensure that you multiply the exponent times the power.
4) Negative Exponent Rule: Make sure to Invert the base in order to change a negative exponent into a positive.
5) Any non-zero number that is raised to the zeroth power is 1.
We want to find an expression that is equivalent to 10⁵. Thus, applying the rules of exponents above, the only one that is correct is 10 ³x 10² or 10x10x10x10x10
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What is the slope of the line that contains the points (9,-4) and (1,-5)?O A. -B. 1C. -1D. /718
Answers
Answer: D. 1/8
Explanation
The slope of the line can be calculated with:
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]where (x₁, y₁) and (x₂, y₂) are the two points given. Then:
• x₁ = 9
,• y₁ = –4
,• x₂ = 1
,• y₂ = –5
Thus, replacing the values and simplifying:
[tex]m=\frac{-5-(-4)}{1-9}[/tex][tex]m=\frac{-5+4}{-8}[/tex][tex]m=\frac{1}{8}[/tex]A pancake recipe for Christ 3 1/3 cups of milk to 1 cup of flour. At 3 3/4 cups of milk is used, what quantity of flour will be needed, according to the recipe?
Answers
Given:
3 1/3 cups of milk to 1 cup of flour
3 3/4 cups of milk
So:
[tex]\frac{3\frac{1}{3}}{3\frac{3}{4}}=\frac{1}{x}[/tex]Simplify:
[tex]\begin{gathered} \frac{\frac{10}{3}}{\frac{15}{4}}=\frac{1}{x} \\ \frac{10\times4}{3\times15}=\frac{1}{x} \\ \frac{40}{45}=\frac{1}{x} \\ \frac{8}{9}=\frac{1}{x} \end{gathered}[/tex]Solve for x:
[tex]\begin{gathered} 8\cdot x=1\cdot9 \\ 8x=9 \\ \frac{8x}{8}=\frac{9}{8} \\ x=\frac{9}{8}=1\frac{1}{8} \end{gathered}[/tex]Answer:
[tex]1\frac{1}{8}[/tex]Which choice is equivalent to the fraction below? (Hint: Rationalize the denominator and simplify.)A.B.C.2D.
Answers
Given: A fraction
[tex]\frac{2-\sqrt{2}}{2+\sqrt{2}}[/tex]Required: To simplify the given fraction.
Explanation: The given fraction can be simplified by rationalizing the denominator of the fraction. The rationalizing factor is
[tex]2-\sqrt{2}[/tex]Hence,
[tex]\begin{gathered} \frac{(2-\sqrt{2})}{2+\sqrt{2}}\times\frac{(2-\sqrt{2})}{(2-\sqrt{2})} \\ \frac{(2-\sqrt{2})^2}{(2)^2-(\sqrt{2}^{)2}} \end{gathered}[/tex]Which gives
[tex]\begin{gathered} \frac{4+2-4\sqrt{2}}{4-2} \\ \frac{2(3-2\sqrt{2})}{2} \\ 3-2\sqrt{2} \end{gathered}[/tex]Final Answer: Option A is correct.
help me please !!!
thank youuu
Answers
Answer:
Step-by-step explanation:
I am not entirely sure that this is correct, but I believe the interval notation of your point is (∞,-4). I hope this helps you!
Which expression simplifies to 5? 7 points A. 27/3 -- 14 B. 27/3 + 4 C. --27/3 -- 4 D. --27/3 + 4
Answers
The expression simplifies to 5 is -27/3 +14 .
The option D is correct.
What is Simplification?
Simplification is the process of replacing a mathematical expression by an equivalent one, that is simpler, usually shorter.
Given,
Which expression simplifies to 5?
Here, Options are
A. 27/3 - 14
= 9 - 14 = -5
B. 27/3 + 4
= 9 + 4 = 13
C. --27/3 - 4
= -9 - 4 = -13
D. -27/3 +14
= -9 + 14 = 5
Hence, The expression simplifies to 5 is -27/3 +14 .
The option D is correct.
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You spin a spinner with 5 sections: 1 yellow (Y), 1 purple (P), 1red (R), 1 blue (B), and 1 green (G).What is the sample space for one spin of this spinner?
Answers
Given:
The spinner has five sections that are 1 yellow (Y), 1 purple (P), 1 red (R), 1 blue (B), and 1 green (G).
Required:
We need to find the sample space for one spin of the given spinner.
Explanation:
The sample space = the collection of all sections of the spinner.
[tex]S=\lbrace\text{ yellow, purple, red, blue, green \textbraceright}[/tex][tex]S=\lbrace\text{ Y, P, R, B, G\textbraceright}[/tex]Final answer:
[tex]\lbrace\text{ Y, P, R, B, G\textbraceright}[/tex]Option D is correct.
