Answer
\(y=-4x^2\)\(y=-1.5x^2\)\(y=3x^2\)Explanation
The number that multiply x^2 contract the function horizontally.
The - corresponds to a reflection over the x-axis of the original x^2 function.
Calculate the amount you would pay (including tax) for an item normally priced $1199 that is currently 30% off, for which you have an additional 10% off coupon, in an area where sales tax is 7%. (the discounts can be stacked or figured sequentially, tax must be applied after the discounted price is determined)
Answer: The amount you would pay (including tax) for the item is:
$755.37 + $52.88 = $808.25
Step-by-step explanation: irst, we calculate the amount of discount that is applied to the original price:
30% of $1199 = 0.3 x 1199 = $359.70
So, the discounted price is:
$1199 - $359.70 = $839.30
Next, we apply the additional 10% off coupon to this discounted price:
10% of $839.30 = 0.1 x $839.30 = $83.93
The final price after the coupon is applied is:
$839.30 - $83.93 = $755.37
Finally, we calculate the sales tax on this final price:
7% of $755.37 = 0.07 x $755.37 = $52.88
The amount you would pay (including tax) for the item is:
$755.37 + $52.88 = $808.25
explain why a3*a2 dosnt equal a6... Plz I need help!
Answer: a^3 · a^2 ≠ a^6 as the laws of exponents states that the multiplication rule for two exponents with the same bases equates to addition, so that a^3 · a^2 = a^3+2 = a^5.
On September 16, 2011, the New York Times reported that the American public's approval rating of Congress had sunk to an all-time low of 12%. Suppose we wanted to carry out another poll the following week. How many individuals must we survey to estimate the proportion who approve of Congress at that point to within 3% at 95% confidence?
Answer:
The sample size is \(n = 451 \)
Step-by-step explanation:
From the question we are told that
The margin of error is E = 0.03
The sample proportion is \(\^ p = 0.12\)
From the question we are told the confidence level is 95% , hence the level of significance is
\(\alpha = (100 - 95 ) \%\)
=> \(\alpha = 0.05\)
Generally from the normal distribution table the critical value of \(\frac{\alpha }{2}\) is
\(Z_{\frac{\alpha }{2} } = 1.96\)
Generally the sample size is mathematically represented as
\(n = [\frac{Z_{\frac{\alpha }{2} }}{E} ]^2 * \^ p (1 - \^ p ) \)
=> \(n = [\frac{1.96}{0.03} ]^2 *0.12 (1 - 0.12 ) \)
=> \(n = 451 \)
This question is based on concept of normal distribution.Therefore, 451 individuals must survey to estimate the proportion who approve of Congress at that point to within 3% at 95% confidence.
Given:
The sample size is n=451.
According to question,
The margin of error is E = 0.03
The sample proportion is \(\bold{\hat{p}}\) =0.12
From the question, the confidence level is 95% , hence the level of significance is,
\(\alpha =(100-95)\%\\\bold{\alpha =5\%=0.05}\)
Normally, as per the normal distribution table the critical value of,
\(\dfrac{\alpha }{2}\) is
\(\bold{Z_\frac{\alpha }{2} =1.96}\)
And ,the sample size in mathematically represented as,
\(\begin{aligned}n&=(\frac{Z_\frac{a}{2} }{E})^{2} \times \hat p(1-\hat p)\\n&=(\frac{1.96}{0.03})^2 \times 0.12(1-0.12)\\\bold{n&=451} \end{aligned}\)
Hence, there are 451 individuals must we survey to estimate the proportion who approve of Congress at that point to within 3% at 95% confidence.
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using the line of best fit
The monthly cell phone bill when shared data equals zero is given as follows:
$26.
How to define a linear function?The slope-intercept representation of a linear function is given by the equation presented as follows:
y = mx + b
The coefficients of the function and their meaning are described as follows:
m is the slope of the function, representing the change in the output variable y when the input variable x is increased by one.b is the y-intercept of the function, which is the initial value of the function, i.e., the numeric value of the function when the input variable x assumes a value of 0. On a graph, it is the value of y when the graph of the function crosses the y-axis.The intercept of the line in this problem is given as follows:
b = 26.
Hence $26 is the monthly cell phone bill when shared data equals zero.
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Tamara is making hot cocoa for a party. Each serving calls for 1/32 pound of sugar. She has 3/4 pound of sugar available. How many servings of hot cocoa can Tamara make?
Answer: Tamara can make 24 servings of hot cocoa.
Step-by-step explanation:
3/4 ÷ 1/32= 3/4*32 =3*8= 24
Hopefully, that makes sense and helps you out!
The volume of a cone of height 9cm is\(1848 {cm}^{3} .\)Find radius\(take\pi = \frac{22}{7} \)
Given the volume of the cone is 1848 cm^3 and the height of the cone is 9 cm.
We have to find the radius of the cone.
We know that the formula of the volume of the cone is given by:
\(V=\frac{1}{3}\pi r^2h\)Put h = 9 and pi = 22/7:
\(\begin{gathered} V=1848 \\ \frac{1}{3}\pi r^2h=1848 \\ \frac{1}{3}\times\frac{22}{7}\times r^2\times9=1848 \\ r^2=\frac{1848\times21}{22\times9} \\ r^2=196 \\ r=\sqrt[]{196} \\ r=14 \end{gathered}\)Thus, the radius of the cone is 14 cm.
solve:x^5-x^4- 7x^3 + 7x^2 + 12x - 12 = 0
Answer:
x=1,x=-\(\sqrt{3}\),x=\(\sqrt{3}\),x=-2,x=2
Step-by-step explanation:
hope this helps :)
have a nice day !!
**please let me know if this was wrong**
Solve the inequality and graph the solution on the line provided. 6x-6<-30
The solution to the inequality 6x - 6 < -30 is x < -4, and it is graphically represented as a closed circle at -4 and shading to the left of -4 on the number line.
To solve the inequality 6x - 6 < -30, we can follow these steps:
Step 1: Add 6 to both sides of the inequality to isolate the variable:
6x - 6 + 6 < -30 + 6
6x < -24
Step 2: Divide both sides of the inequality by 6 to solve for x:
(6x)/6 < (-24)/6
x < -4
The solution to the inequality is x < -4. This means that any value of x less than -4 will satisfy the inequality.
To graph the solution on the number line, we represent -4 as a closed circle (since it is not included in the solution) and shade the region to the left of -4 to indicate all values less than -4.
On the number line, mark a point at -4 with a closed circle:
<--------●-----------------
Then, shade the region to the left of -4:
<--------●================
The shaded region represents the solution to the inequality x < -4.
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If you found that the 95% confidence interval to estimate the true proportion of visitors to Niagara Falls that are from the United States was (0.5216, 0.6784), does this provide evidence that a majority of visitors to Niagara Falls are from the United States
Answer:
The lower end of the interval is above 0.5, which means that it provides evidence that a majority of visitors to Niagara Falls are from the United States
Step-by-step explanation:
We want to see if the majority of Niagara Falls visitors are from the United States.
Looking at the confidence interval
We have to see if the lower end of the interval is higher than 0.5.
In this question:
The 95% confidence interval to estimate the true proportion of visitors to Niagara Falls that are from the United States was (0.5216, 0.6784).
The lower end of the interval is above 0.5, which means that it provides evidence that a majority of visitors to Niagara Falls are from the United States
complete the following statements. in general, % of the values in a data set lie at or below the 70th percentile. % of the values in a data set lie at or above the 20th percentile.. if a sample consists of 600 test scores, of them would be at or below the 86th percentile. if a sample consists of 600 test scores, of them would be at or above the 62th percentile.
If a sample consists of 600 test scores, 516 of them would be at or below the 86th percentile. If a sample consists of 600 test scores, 228 of them would be at or above the 62th percentile.
What is percentile?A percentile is a score that compares a specific score to the scores of the other members of a group. It displays the proportion of other scores that a given score outperformed. For instance, if you have a test score of 75 and are placed in the 85th percentile, it signifies that your score is greater than those of 85% of other test takers.
Given that,
In general, 70 % of the values in a data set lie at or below the 70th percentile.
20 % of the values in a data set lie at or above the 20th percentile.
Generally percentile defines the percentage of a data set that is below or at a value that is being considered.
Hence the percentage of the values of a data set that lies below or at the 16th percentile is 16%
Also the values of a data set that lies below or at the 24th percentile is 24%
Given a sample of 600 test scores , the number of test scores that will be at or below the 86th percentile is 86% of 600 which is mathematically represented as:
K = \(\frac{86}{100}\) × 600
K = 516 test scores
Given a sample of 600 test scores , the number number of test scores that will be above the 62 th percentile is (100 - 62 = 38 )% of 600 which is mathematically represented as:
a = \(\frac{38}{100}\) × 600
a = 228 test scores.
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Estimate 6,976 + 3,983 + 13,560 by first rounding each number to the nearest thousand.
Answer:
Step-by-step explanation:
The thousand mark is the 4th number when going from right to left. So it would be the {6},976. When it comes to rounding, you go "5 and above, give it a shove, 4 and below, let it go. 6,976 rounded to the nearest thousand is 7,000, 3,983 rounded to the nearest thousand is 4,000, 13,560 rounded is 14,000.
7,000 + 4,000+ 14,000 = 25,000
Find the x-intercept of the following linear function: 3x - 2y- 16
QUICK
I gotchu
To solve for x-intercepts, y must be 0.
3x - 2(0) - 16 = 0
3x - 16 = 0
3x = 16
x = 16/3
X intercepts are (\(\frac{16}{3}\),0)
Answer:
The answer is 5.33333333 or 5 1/3
Please help: write each equation in exponential form
Answer:
\(4^{4}=256\)
Step-by-step explanation:
Rewrite log4256=4 in a different form:
\(4^{4}=256\)
Triangle SRTs angle R is 59° angle T is 79° what is the length of ST to the nearest 10th of a yard 
If Triangle SRTs angle R is 59° angle T is 79° the length of ST to the nearest 10th of a yard is 6.1
How do we find the length ST of a triangle?Since we have given that
ΔSRT is a triangle with measures :
SR = 7 yd
∠T = 79°
∠R = 59°
We need to find the side ST .
To find the length of ST, we can use the Law of Sines, which states:
sin(T) / SR = sin(R) / ST
sin(79°) / 7 = sin(59°) / ST
0.14 = sin(59°) / ST
ST = sin(59°)/0.14 ⇒ 0.8572 / 0.14 ≈ 6.1229
Therefore, the length of ST is approximately 6.1 yards to the nearest tenth of a yard
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alternate exterior angles theorem
vertical angles theorem
corresponding angles postulate
same side interior angles theorem
alternate interior angles theorem
are all the second awsner which one is it
Whats the awnser Please Help
Answer:
x = 116
x° = 116°
(x - 52)° = 64°
Step-by-step explanation:
this shape is a right angle trapezoid and there are two 90° angles
the sum of all interior angles is 360°
90 + 90 + x + x - 52 = 360
2x - 52 = 180
2x = 232
x = 116
54
Roman has played 56 of the 98 songs on his playlist. How many more songs are left on the playlist?
24
33
42
0 56
What part of an hour passes from 3:12 p.m. to 5:30 p.m.?
Answer:
2.3 hours
Step-by-step explanation:
From 3:12 pm to 4:12 pm, one hour passes.
From 4:12 pm to 5:12 pm, another hour passes.
From 5:12 pm to 5:30 pm, there are 18 minutes that pass.
Therefore, the total time elapsed is 2 hours and 18 minutes out of 60 minutes in an hour.
To convert this to a fraction, we can write:
2 hours + 18 minutes = 2 + 18/60 hours = 2.3 hours
So, 2.3/1 hour passes from 3:12 pm to 5:30 pm.
Can i get help to find the length of EG?
Answer:
EG = 20
Step-by-step explanation:
given that F is on segment EG , then
EG = EF + FG , that is
5x = 2x + 2x + 4
5x = 4x + 4 ( subtract 4x from both sides )
x = 4
Then
EG = 5x = 5(4) = 20
Suppose that 10 balls are put into 5 boxes, with each ball independently being put in
box with probability (), ∑(i = 1 to 5) () = 1
(a) Find the expected number of boxes that do not have any balls.
(b) Find the expected number of boxes that have exactly 1 balls.
Answer:
(a) Let X be the number of boxes that do not have any balls. We can calculate the probability that a particular box is empty, which is (1-p)^10, where p is the probability that a ball is put into that box. The expected number of boxes that are empty is then:
E(X) = 5(1-p)^10 (since each box has the same probability of being empty)
Substituting ∑(i = 1 to 5) p = 1, we get p = 1/5. Therefore,
E(X) = 5(1-1/5)^10 = 5(4/5)^10 ≈ 0.328
So, the expected number of boxes that do not have any balls is approximately 0.328.
(b) Let Y be the number of boxes that have exactly one ball. The probability that a particular box has exactly one ball is given by:
P(exactly one ball in a box) = 10p(1-p)^4
where p is the probability that a ball is put into that box. The expected number of boxes that have exactly one ball is then:
E(Y) = 5(10p(1-p)^4)
Substituting p = 1/5, we get:
E(Y) = 5(10/5^5) = 1/25
So, the expected number of boxes that have exactly one ball is 1/25.
A rectangular prism has a height of 22 yards and a base with an area of 152 square yards. What is its volume?
Group of answer choices
3344 Cubic yards
174 Cubic yards
130 Cubic yards
204 Cubic yards
Answer:
The correct answer is the first one
Step-by-step explanation:
Given:
h = 22 yd
a (base) = 152 yd^2
Find: v - ?
First, let's write down the formula of the rectangular prism's volume:
\(v = a(base) \times h\)
Since we know both the area of the base and the height, we can easily find the volume:
\(v = 152 \times 22 = 3344 \: {yd}^{3} \)
A jogger runs 15 miles in 2 hour and continues jogging at the same rate.
What is the jogger's speed in miles per hour?
Answer:
7.5 miles per hour
Step-by-step explanation:
7.5 = 1 mile + 7.5= 1 mile =15= 2 miles
i could use some help
Answer: it is traingle prism
Step-by-step explanation:
fv=100000, pmt=4000, i/y=5%, n=10, what is pv?
The Present value is $6,139.132.
We have,
FV=100000, pmt = 4000, I =5%, n=10
So, The present value formula is
PV=FV / (1 + \(i)^n\)
So, PV = 100, 000 / (1+ 5/100\()^{10\\\)
PV = 100,000 / (1+ 0.05\()^{10\\\)
PV = 100, 000/ (1.05\()^{10\\\)
PV = 100,000 / 1.6288946
PV= $6,139.132
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PLS HELP -
transponder for a toll bridge costs $22.50. With the transponder, the toll is $4 each time you cross the bridge. The only other option is toll-by-plate, for which the toll is $5.25 each time you cross the bridge with an additional administrative fee of $1.25 for each crossing. How many times would you need to cross the bridge for the costs of the two toll options to be the same?
You need to cross the bride _ times?
Using linear function you would need to cross the bridge 30 times for the costs of the two toll options to be the same.
What is meant by linear function ?To find out how many times you would need to cross the bridge for the costs of the two toll options to be the same, we need to set up an equation.Let x be the number of times you need to cross the bridge.For the transponder option: 22.50 + 4x = costFor the toll-by-plate option: 5.25x + 1.25x = costSince the costs of the two options need to be equal, we can set the two equations equal to each other and solve for x:22.50 + 4x = 5.25x + 1.25x + 22.504x = 5.25x + 1.25x0.75x = 22.50x = 30So you would need to cross the bridge 30 times for the costs of the two toll options to be the same.To learn more about linear function refer:
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Computer keyboard failures can be attributed to electrical defects or mechanical defects. A repair facility currently has 25 failed keyboards, 12 of which have electrical defects and 13 of which have mechanical defects. (a) How many ways are there to randomly select 6 of these keyboards for a thorough inspection (without regard to order)
Answer:
There are 177,100 ways.
Step-by-step explanation:
Since there is no regard to order, we use the combinations formula to solve this question.
Combinations formula:
\(C_{n,x}\) is the number of different combinations of x objects from a set of n elements, given by the following formula.
\(C_{n,x} = \frac{n!}{x!(n-x)!}\)
In this question:
6 keyboards from a set of 25. So
\(C_{25,6} = \frac{25!}{6!(25-6)!} = 177100\)
There are 177,100 ways.
Please help
Answer above look at picture
Answer:
It is to represent the area of the park.
Step-by-step explanation:
The length and width of the park would be inches, miles, or meters to describe the linear aspect of the park.
If the park was, for example, 2 miles long and 3 miles wide, you would say the park is 6 miles squared. This is to describe the square area of the park. Square units could be replaced by squared acres, miles, or meters depending on the size of the park. This is to represent the area of the park.
ANSWER QUICKLY PLEASE
Part A
For the following figure, the value of x is
Part B
Using the same figure, determine the value of y.
Choose the suitable option,
A) 16in
B) 64in
C) 8 square root of 2
D) 4 square root of 2
Option C is correct, the value of y is 8 square root of 2.
What is Trigonometry?Trigonometry is a branch of mathematics that studies relationships between side lengths and angles of triangles.
We need to find the value of y.
The given triangle is right angle triangle with opposite side of 8 inches.
Hypotenuse is y and adjacent side is x.
Now let us solve for sinB
sin45 =8/y
1/√2=8/y
Apply cross multiplication
y=8√2
8 square root of 2
Hence, option C is correct, the value of y is 8 square root of 2.
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can you explain how I would write this equation in an excel format? P(t)=103126*e^(0.0071* (A2-2019) like for example (see attached picture) when I press enter it doesn't work. the equation is supposed to be to answer my question of for this thing where I am using Bay County. According to the U.S. Census Bay county had a population of 103,126 in 2019 and in 2020 it had 103,856. How much would it grow by 2039? How will I represent the growth assuming an exponential model? so if you have an equation to insert in a column just an equation that'll work!"I am using Bay County, a county located in the state of Michigan. According to the U.S. Census Bay county had a population of 103,126 in 2019 and in 2020 it had 103,856. The exponential growth equation can be written as, "
The general equation fo exponential formula is,
\(y=ab^t\)Assume t = 0 for year 2019. So for t = 0, t = y = 103126.
Substitute values in the equation to detemine the value of a.
\(\begin{gathered} 103126=a(b)^0 \\ a=103126 \end{gathered}\)For year 2021, the value of t is 1 and value of y is 103856.
Substitute the values in the formula to determine the value of b.
\(\begin{gathered} 103856=103126\cdot(b)^1 \\ b=\frac{103856}{103126} \\ \approx1.0071 \end{gathered}\)So exponential equation is,
\(y=103126(1.0071)^t\)Here, t is time from year 2019.
How do you rewrite p(x)=-5x2+120x-315 in vertex form
Answer:
\(p(x)=-5(x-12)^2+405\)
Step-by-step explanation:
Hi there!
Vertex form: \(f(x)=a(x-h)^2+k\)
\(p(x)=-5x^2+120x-315\)
Factor out -5 from the first two terms
\(p(x)=-5(x^2-24x)-315\)
Complete the square by adding \((\frac{24}{2} )^2\) (the square of half of the x-coefficient)
\(p(x)=-5(x^2-24x+(\frac{24}{2} )^2)-315-(-5)(\frac{24}{2} )^2\)
We're subtracting \((-5)(\frac{24}{2} )^2\) because we need to keep the equation balanced and we can't just add new values.
Complete the square
\(p(x)=-5(x-(\frac{24}{2} ))^2-315-(-5)(\frac{24}{2} )^2\)
Simplify
\(p(x)=-5(x-12)^2-315+720\\p(x)=-5(x-12)^2+405\)
Summary:
Complete the squareSimplifyI hope this helps!
A bagel factory produced 300 bags of bagels. There were 7 bagels in each bag. How many
bagels did the factory produce?
bagels