which answer is an equation in point-slope form forbthe given point and slope point: (1, -9); slope: 2.​

Answer:

The value is [tex]C = 85\%[/tex]

Step-by-step explanation:

From the question we are told that

  The standard deviation is  [tex]\sigma = 21.73[/tex]

  The sample size is  n  =  14

  The mean score is  [tex]\= x = 74.57[/tex]

  The confidence interval is  65.7425 to 83.3975

Generally the degree of freedom is mathematically represented as

      [tex]df = n -1[/tex]

=>  [tex]df = 14 -1[/tex]

=>  [tex]df = 13[/tex]

Generally the margin of error is mathematically evaluated as

     [tex]E = \frac{83.3975 -65.7425 }{2}[/tex]

=> [tex]E = 8.828[/tex]

Generally this margin of error is mathematically represented as

     [tex]E = t_{\frac{\alpha }{2} , df} * \frac{\sigma }{\sqrt{n} }[/tex]

=>   [tex]8.828 = t_{\frac{\alpha }{2} , df} * \frac{21.73 }{\sqrt{14} }[/tex]

=>   [tex]t_{\frac{\alpha }{2} , df} = 1.520[/tex]

From the t distribution table the probability of   [tex]( t> 1.520 )[/tex]  at a degree of freedom of 13  is  

     [tex]\frac{\alpha }{2} = P( t > 1.52 ) = 0.076[/tex]

=>  [tex]\alpha = 2 * 0.076[/tex]

=>  [tex]\alpha = 1.52[/tex]

So the confidence level is evaluated as  

     [tex]C = 1- \alpha[/tex]

=>  [tex]C = 1- 0.152[/tex]

=>  [tex]C = 0.85[/tex]

Converting to percentage

=>  [tex]C = 0.85 * 100[/tex]

=>  [tex]C = 85\%[/tex]

Answer:

[tex]49x^2-7^2=49(x-1)(x+1)[/tex]

Step-by-step explanation:

Factoring

We need to recall this property of binomials:

[tex](a-b)(a+b)= a^2-b^2[/tex]

It allows us to factor the difference between two squares as follows.

[tex]a^2-b^2=(a-b)(a+b)[/tex]

The given expression is

[tex]49x^2-7^2[/tex]

Comparing with the above expression:

[tex]a^2=49x^2[/tex]

Taking square root:

[tex]a = 7x[/tex]

[tex]b^2=7^2[/tex]

Taking square root:

b=7

Factoring:

[tex]49x^2-7^2=(7x-7)(7x+7)[/tex]

Now we can see each factor can be taken out the common factor 7:

[tex]49x^2-7^2=7(x-1)*7(x+1)[/tex]

Multiplying:

[tex]\boxed{49x^2-7^2=49(x-1)(x+1)}[/tex]

Answer:

In a lay term; The z-score gives us information concerning how many percentages of data lie between the given data interval. The z-score gives us an overview of the distance from the mean a data point is. In addition to that, it measures the degree of standard deviations below or above the population mean a raw score. We can place a z-score on a normal distribution curve.

Step-by-step explanation:

Given that:

Height of woman between age 20 -29 are approximately normal with:

population mean = 64.3 inches &;

standard deviation = 2.7

For men:

population mean = 69.9 inches

Standard deviation = 3.1 inches

In a lay term; The z-score gives us information concerning how many percentages of data lie between the given data interval. The z-score gives us an overview of the distance from the mean a data point is. In addition to that, it measures the degree of standard deviations below or above the population mean a raw score. We can place a z-score on a normal distribution curve.

Answer:

order of operations, right?, divide

Step-by-step explanation:

sorry if this is wrong :)

Answer:

y=4x+30

Step-by-step explanation:

y is distance, x is time

Answer:

70%

Step-by-step explanation:

50/10 is 5 (which is 10%). 5 x 7 is 35 (or 70%)

Answer:

m= 68 degrees

a=  68 degrees

p= 68 degrees

q= 112 degrees

r= 68 degrees

Step-by-step explanation:

Hope this helps, if so mark me brainliest???

Answer:

2 laps in 120 seconds is correct

Answer: The greatest common factor of the two is 5.

Step-by-step explanation:

The greatest common factor is something that can be seen between the two as relation.

Answer:

19

Step-by-step explanation:

im jumping off a bridge

Answer:

the answer in 19

Step-by-step explanation:

use Ur brain

Answer:

C

Step-by-step explanation:

I hope this helps!!!!

The best estimate of the fraction 29/40 would be; 0.7

When 'a' is divided by 'b', then the result we get from the division is the part of 'a' that each one of 'b' items will get. Division can be interpreted as equally dividing the number that is being divided into total x parts, where x is the number of parts the given number is divided.

We need to find the decimal that best best estimate of the fraction 29/40

A negative divided by a negative is positive, then;

29/40 = 0.72

Therefore, The best estimate of the fraction 29/40 would be; 0.7

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Answer:

11 feet

hope this helps

Answer:

Step-by-step explanation:

Answer:

StartLayout Enlarged Left-Brace 1st Row y = 280 x 2nd Row y = negative 0.052 (x minus 500) squared + 24,000 EndLayout

Step-by-step explanation:

Given that:

Cost per cleaner = $280

The cost of x vacuum cleaners will be :

Cost per cleaner * number of cleaners

$280 * x

= $280x

The general vertex firm equation :

y-k = a(x-h)^2

Vertex = (500, 24000) ; Vertex = (h, k)

h = 500 ; k =24000 y= 11000, x = 0

y intercept = 11000

Plugging the values :

11000 - 24000 = a(0 - 500)^2

- 13000 = a(-500)^2

-13000 = a * 250000

a = - 13000 / 250000

a = - 0.052

Hence,

y - 24000 = a(0 - 500)^2

y = - 0.052(0 - 500)^2 + 24000

Answer:

A on edge

Step-by-step explanation:

i took the test

Answer:

kinetic energy is possessed

Answer:

By using Carl Gauss's clever formula, (n / 2)(first number + last number) = sum, where n is the number of integers, we learned how to add consecutive numbers quickly. We now know that the sum of the pairs in consecutive numbers starting with the first and last numbers is equal.

Step-by-step explanation:

Answer:

Step-by-step explanation:

7+8+9=24.

8 is the second integer and 8*3=24.

Answer:

D. $80

Step-by-step explanation:

kayla equation: 30x+20=y

Sara equation: 35x+10=y

30x+20=35x+10

10=5x

2=x

30(2)+20=$80

35(2)+10=$80

Answer: $80

Step-by-step explanation:

Kayla:

Lesson fee ($30) + first-time fee ($20) = 50

Another lesson fee will make is $80

Sara:

Lesson fee ($35) + first-time fee ($10) = 45

Another lesson fee will make $80

Answer = 80

Answer:

77

Step-by-step explanation:

Answer:

8 weeks

Step-by-step explanation:

1. Write out the equation

12+6x=60

2. Subtract 12 from both sides

6x = 48

isolate the variable (divide 6 on both sides)

x= 8

Answer:

0.403 π rad

or

1.265 rad

Hope this helps! I used both variations just to be safe but it seems you only need the one with Pi in it.

Answer:y-4=2(x-1)

Step-by-step explanation:

It has the same slope as the y=2x+7, making it parallel, and crosses the point (1,4)

Answer: Rachael Ray.

Step-by-step explanation: Have a blessed day hopefully this helped!

Answer:

Step-by-step explanation:

Step by step

Step 1 of 2: Convert decimal to fraction.

Convert decimal to fraction

Step 2 of 2: Reduce fraction to lowest terms.

Reduce fraction to lowest terms

1 is the greatest common divisor of 753 and 100. The result can't be further reduced.

Step 2 of 2:  Convert improper fraction to mixed number.

Convert improper fraction to mixed number

753 ÷ 100 = 7 remainder 53

Tom will need to offer additional collateral of C. $2,437.50 to borrow enough for his planned vacation.

Collateral refers to a valued property or financial security offered by the borrower to the lender to guarantee repayment of a loan.

Lenders sell collaterals when the borrowers fail to comply with their loan terms.

Car's value = $3,500

Collateral value in percentage = 80%

Car's collateral value = $2,800 ($3,500 x 80%)

Planned cost of vacation = $4,750

Additional cost to meet vacation cost = $1,950 ($4,750 - $2,800)

Additional collateral value to meet target = $2,437.50 ($1,950/80%)

Total collateral that Tom needs to offer = $5,937.50 ($3,500 + $2,437.50)

80% of $5,937.50 = $4,750

Another way is to work with the planned cost and the collateral percentage offered by Tom's bank:

Planned cost of vacation = $4,750

Collateral value in percentage = 80%

Total collateral to be offered by Tom = $5,937.50 ($4,750/80%)

Car's collateral value = $3,500

Additional collateral value = $2,437.50 ($5,937.50 - $3,500)

Thus, Tom needs additional collateral of C. $2,437.50.

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28 PLEASE GIVE BRAINLIEST

Answer:

A, Between 9 and 10 am

Step-by-step explanation:

The math is simple. between 9 and 10 theres 1 hour, and between 28 and 67 there are 39 P(t).

Between 10 and 15 there are 5 hours, and between 67 and 212 there are 145 P(t), which divided by 5 is 29.

You divide by 5 to get the same amount of hours to compare both

9-10 am= 39

10-15am/pm= 29

Therefore, the number of people increased faster between 9 and 10 am.

The rate of increase of population is faster between t = 9 to t = 10.

The ratio of two numbers a and b can be written as a : b = a/b.

The ratio of two quantities is the unit rate of one quantity with respect to the other.

The table for the population and time can be formed as follows,

Population                               Time in hours

28                                                 9

67                                                 10

212                                                15

Now, the increase in population can be obtained by taking the ratios as follows,

Increase in population between t = 9 to t = 10 is given as,

(67 - 28) ÷ (10 - 9)

⇒ 39

And, between t = 10 to t = 15, it is given as,

(212 - 67) ÷ (15 - 10)

⇒ 145 ÷ 5 = 29

Thus, the rate of increase is more from  t = 9 to t = 10.

Hence, the faster increase is given in time interval of  t = 9 to t = 10.

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