I need help asap please someone help

Answer:

6^15

Step-by-step explanation:

please mark me as brainlest

(a) The value of test statistic is 2.6795.

(b) The critical value is 2.1578 and p value is 0.0062.

(c) We conclude that if we have enough evidence to support the claim that first population has a large mean.

Given that,

mean(x)=12

standard deviation, sd(1)=3

number n(1)=20

mean y=10

standard deviation, sd(2)=1.5

number n(2)=21

null, H(0): μ1-μ2 = 0

Alternate, H(1): μ1-μ2 > 0

We use test statistic (t) = \((x-y)/\sqrt{(sd(1)^2/n(1))+(sd(2)^2/n(2))}\)

t(0) =\(\frac{12-10}{\sqrt{9/20+2.25/21}}\)

t(0) =2.6795

t(0) =2.6795

critical value

level of significance, alpha = 0.02

degrees of freedom (df) = \(\frac{sd(1) ^2/n(1)+sd(2) ^2/n(2))^2}{(s(1)^4/n(1)^2(n(1)-1) + (s(2)^4/n(2)^2(n(2)-1)}\)

df = \(\frac{((3^2/20)+(1.5^2/21))^2}{(3^4/20^2(20-1))+(1.5^4/21^2(21-1))}\)

df = 27.6364

df = 27(approx)

From standard normal table,right tailed t(a/2) =2.1578

Since our test is right-tailed,

Reject H(0), if t(0) > 2.1578

we got t(0) = 2.67946 and |t(a)| = 2.1578

make decision

Hence value of |t(0)| > | t(a)| and here we reject H(0)

p-value: right tail H(a): (p > 2.6795) = 0.0062

Hence value of p(0.02) > 0.0062, here we reject H(0)

H0: μ1-μ2 = 0

H1: μ1-μ2 > 0

test statistic: 2.6795

b. We have to find the t critical value for a significance level of 0.02 for an alternative hypothesis that the first population has a larger mean.

critical value: 2.1578

p value: 0.0062

c. We have to find the conclusion.

We have enough evidence to support the claim that first population has a large mean.

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The right question is:

Answer: A. (2, 5), (3, 6), (6,9)

Step-by-step explanation:

Each value of x maps onto only one value of y.

Answer:

8x-4

Step-by-step explanation:

multiply 2x-1 * 4

This table shows the frequency of each number obtained after throwing the die 35 times

To prepare a frequency table based on the numbers obtained from throwing a die 35 times, we can list the numbers from 1 to 6 and count the frequency of each number.

Numbers: 1, 2, 3, 4, 5, 6

Frequency: 5, 14, 6, 4, 5, 1

Based on the given numbers, the frequency table would look like this:

Number   | Frequency

1                      5

2                     14

3                      6

4                      4

5                      5

6                       1

This table shows the frequency of each number obtained after throwing the die 35 times.

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Answer:

The system of equations does not have a solution

Step-by-step explanation:

Whenever you get a number = a different number, that means there's no solution.

Answer:

i think it is 24.76% of real jucie

Step-by-step explanation:

because the rest is not real jucie

The zeros of the function f(x) = 2x⁴ + 11x³ + 16x² + x - 6 are x = -3, x = -2,

x = -1 and x = 1/2 respectively

The zero of a real-, complex-, or generally vector-valued function f, is a member x of the domain of f such that f(x) vanishes at x; that is, the function f attains the value of 0 at x, or equivalently, x is the solution to the equation f(x) = 0. Graphically, the real zero of a function is where the graph of the function crosses the x‐axis; that is, the real zero of a function is the x‐intercept(s) of the graph of the function.

In the given problem, the zero of the function;

f(x) = 2x⁴ + 11x³ + 16x² + x - 6; -3 are

f(-3) = 2(-3)⁴ + 11(-3)³ + 16(-3)² -3 - 6 = 0

f(-2) = 2(-2)⁴ + 11(-2)³ + 16(-2)² - 2 - 6 = 0

f(-1) = 2(-1)⁴ + 11(-1)³ + 16(-1)² - 1 - 6 = 0

f(1/2) = 2(1/2)⁴ + 11(1/2)³ + 16(1/2)² - 1/2 - 6 = 0

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Using compound interest, it is found that:

The amount of money earned, in compound interest, after t years, is given by:

\(A(t) = P\left(1 + \frac{r}{n}\right)^{nt}\)

In which:

In this problem:

Then, the amount paid in 25 years is given by:

\(A(25) = 450000\left(1 + \frac{0.0325}{12}\right)^{12(25)} = 1012978\)

The total amount that would be paid is of $1,012,978.

Considering 25 years of 12 months, the monthly amount paid is given by:

\(M = \frac{1012978}{25(12)} = 3376.6\)

The would have to afford to pay $3,376.6 each month.

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Answer:

×=14

Step-by-step explanation:

24÷16=1.5

21÷1.5=14

you can start by dividing the total length of the road by the distance that can be repaired per week:

13 km ÷ 3 1/2 km/week = 3.71 weeks

Rounding up, it will take 4 weeks to repair the entire 13 km stretch of road.

Answer:

b

Step-by-step explanation:

because it one toy for that many dollars and i hope this will help you

The answer would be C - "Cheetah B has a higher ratio of miles per minute than Cheetah A because 17 over 8 is less than 56 over 20."

also "get it right please" ?! how rude

Answer:

33 miles per hour

Step-by-step explanation:

To find the speed of the car in miles per hour, we need to divide the number of miles traveled by the time in hours. We can convert minutes to hours by dividing by 60. So, the time in hours is 45 minutes / 60 minutes/hour = 0.75 hours. Then, we can divide the distance traveled by the time to find the speed:

25 miles / 0.75 hours = 33.33 miles per hour

Rounding to the nearest whole number, the speed of the car was 33 miles per hour.

Answer:

Millions

Step-by-step explanation:

2 is in the millions place

The Place Value of  digit 2 = 2000000 , 2 million.

The place value is the position of each digit in a number. The place value of digits is determined as ones, tens, hundreds, thousands,ten-thousands and so on, based on their position in the number.

Each digit has a value depending on its place called the place value of the digit.

Place Value of a digit = (face value of the digit) × (value of the place).

6 is in ten place. Hence, the place value of 6 in 64 = 6 x 10 = 60.

The digit 2 in  302 648 719

Place Value of  digit 2  = (2) × (1000000)

Place Value of  digit 2 = 2000000

Therefore Place Value of  digit 2 = 2000000 , 2 million .

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Answer:

C, none of the above

Step-by-step explanation:

-4(3d-2) after expression should be -12d+8 and then add -7, so combine like terms would be -12d+1, which is not the choice, so the answer is none of the above.

Answer:

The answer is C  (none of the above)!

Step-by-step explanation:

Answer:

65850

Step-by-step explanation:

Answer:

65,850

Step-by-step explanation:

5 laptops costs 163,750(5x32750). Total costs of 229,600-laptops 163,750=costs of desktop 65850.

Hi Brielle the correct answer to your question is 3.12 x 4.0 = 12.48

12.48

Your answer should be 12.48 I hope that helps you

The system of equations as an augmented matrix is \(\left[\begin{array}{ccc|c}1&0&0&100\\0&-5&-7&350\\0&-5&-9&200\end{array}\right]\)

From the question, we have the following parameters that can be used in our computation:

x                  = 100

   -5m  - 7c  = 350

   -5m  - 9c  = 200

The above means that the variables in the system of equations are

x, m and c

So, we have the following representation

x    m     c        

1    0      0        100

0   -5    -7        350

0   -5    -9        200

When represented as an augmented matrix, we have

\(\left[\begin{array}{ccc|c}1&0&0&100\\0&-5&-7&350\\0&-5&-9&200\end{array}\right]\)

Hence, the augmented matrix is \(\left[\begin{array}{ccc|c}1&0&0&100\\0&-5&-7&350\\0&-5&-9&200\end{array}\right]\)

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Answer isn't one of your options, it is 34.

\(f(9) = (3(9)+7)\)

\(f(9) = (27+7)\\ \\f(9) = 34\)

\(f(9) = 34\).

Answer:

die

Step-by-step explanation:

so in order to die you must die

Answer:

work is pictured and shown

Answer:

Infinitely many solutions.

Step-by-step explanation:

To solve the system of equation using the substitution method, the problem has already given us a solution for x:

x = -4y - 9

Using this, we can plug that into the first equation and solve for y:

3x + 12y = -27

3(-4y - 9) + 12y = -27

-12y - 27 + 12y = -27

-27 = -27

The fact that our solution indicate -27 = -27 means that these two equations have infinitely many solutions for the value y.  This simply means that no matter what we put in for y, the statement will always be true.

Notice that these two equations are in fact the same equation:

x = -4y - 9 ==> x + 4y = -9 ==> 3x + 12y = -27

Since these two equations are the same, then there are infinitely many solutions.

I'm not sure quite what they want for the form in terms of y, but let's solve for y since they already solved for x:

x = -4y - 9

x + 9 = -4y

y = (-1 / 4) (x + 9)

Cheers.

The percentage of regular grade gasoline sells for between $3.35 and $3.55 per gallon is 64%

The percentage of regular grade gasoline sells for between $3.35 and $3.65 per gallon is 81.5%

The percentage of regular grade gasoline sells for less than $3.55 per gallon is 84%

Given :

Mean retail price is $3.45

Standard deviation is 0.10

Empirical rule states that 99.7% of data is observed in normal distribution that lies within 3 standard deviations.

68% of data lies under 1 standard deviation

95% lies under 2 standard deviations

99.7% lies under 3 standard deviations

there are 3 standard deviations on the left and right of mean . The graph is attached below

Mean is 3.45. standard deviation is 0.1

3.45+0.1=3.55

3.45-0.1=3.35

So 3.35  and 3.55 lies under first standard deviation

The percentage between $3.35 and $3.55 is 68%

3.45 +0.1+0.1=3.65

3.35 lies on 1 standard deviation on left and 2 deviations on the right of mean

So , 34+34+13.5=81.5%

The percentage between $3.35 and $3.65 is 81.5%

For gasoline sells for less than 3.55 , there are 3 standard deviation on the left of mean and 1 standard deviation on the right

0.15+2.35+13.5+34+34=84%

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Answer:

± \(\frac{3}{4}\)

Step-by-step explanation:

Given

\(\sqrt{\frac{9}{16} }\) = \(\frac{\sqrt{9} }{\sqrt{16} }\) = ± \(\frac{3}{4}\) ← note plus or minus

Answer:

3/4

Step-by-step explanation:

The square root of 9 is 3 and the square root of 16 is 4 so you get an answer of 3/4.

Hope it helps

It takes 10 minutes for the number of bacteria in the population to double.

To determine the time it takes for the number of bacteria in a population to double, we need to find the value of t when the function f(t) equals twice the initial number of bacteria.

The given function is f(t) = 60,000 * 2^(t/10).

To find the time it takes for the number of bacteria to double, we set f(t) equal to twice the initial number of bacteria, which is 2 * 60,000 = 120,000:

120,000 = 60,000 * 2^(t/10).

Next, we can simplify the equation by dividing both sides by 60,000:

2 = 2^(t/10).

Since both sides of the equation have the same base (2), we can equate the exponents:

t/10 = 1.

To solve for t, we multiply both sides by 10:

t = 10.

Therefore, it takes 10 minutes for the number of bacteria in the population to double.

This result is obtained by setting the growth rate of the bacteria population in the given function. The exponent t/10 determines the rate of growth, and when t is equal to 10, the exponent becomes 1, resulting in a doubling of the initial number of bacteria.

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Answer:

Step-by-step explanation:

5/2% is in the fraction form

520 is the decimal form

hope this helps

Answer:

Excise tax

Step-by-step explanation:

Correct me if I'm wrong <3

Step-by-step explanation:

so, we calculate the perpendicular slope, and then we start with the point-slope form (since we were given a specific point of the line), and transform into the regular slope-intercept form.

the slope in

y = 2x + 2

is the factor of x : 2 or 2/1

the perpendicular slope is turning this upside down and flips the sign : -1/2

the point- slope form is

y - y1 = a(x - x1)

"a" being the slope, (x1, y1) being the point.

y - 9 = -1/2(x - -2)

y - 9 = (-1/2)x - 1

y = (-1/2)x + 8