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taurus [48]
3 years ago
9

Solid fats are more likely to raise blood cholesterol levels than

Mathematics
2 answers:
alina1380 [7]3 years ago
8 0

Answer:

Step-by-step explanation:

We would determine the mean and standard deviation for the stick and liquid fats.

Mean = sum of items/number of I teams

For the stick margarine,

n = 6

Mean = (25.5 + 26.7 + 26.5 + 26.6 + 26.3 + 26.4)/6 = 26.3

Standard deviation, s1 = √(summation(x - mean)^2/n

Summation(x - mean)^2 = (25.5 - 26.3)^2 + (26.7 - 26.3)^2 + (26.5 - 26.3)^2 + (26.6 - 26.3)^2 + (26.3 - 26.3)^2 + (26.4 - 26.3)^2 = 0.94

s1 = √0.94/6 = 0.41

For liquid margarine,

n = 6

Mean = (16.5 + 17.1 + 17.5 + 17.3 + 17.2 + 16.7)/6 = 17.1

Summation(x - mean)^2 = (16.5 - 17.1)^2 + (17.1 - 17.1)^2 + (17.5 - 17.1)^2 + (17.3 - 17.1)^2 + (17.2 - 17.1)^2 + (16.7 - 17.1)^2 = 0.73

s2 = √0.73/6 = 0.4

Since we know the sample standard deviation and the sample sizes are small, we would determine the t test statistic by applying the formula,

(x1 - x2)/√(s1²/n1 + s2²/n2)

x1 and x2 are the sample means

Therefore,

t = (26.3 - 17.1)/√(0.41²/6 + 0.4²/6)

t = 39.34

Sholpan [36]3 years ago
4 0

Answer:

c

Step-by-step explanation:

mean of stick= 26.33

mean of liquid= 17.05

standard deviation of stick= 0.394

standard deviation of liquid= 0.345

Here we are comparing two samples so we will use t-test

t-statistic= (mean1-mean2)/√(SD1²/(N1-1) + SD2²/(N2-1))

               = 39.6

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HELPPPPPPPPP i have the most trouble with math what’s the answer??
kiruha [24]

Answer:

option B

3

Step-by-step explanation:

Given in the question an expression

\sqrt\frac{48}{x}

Whole numbers are positive numbers, including zero, without any decimal or fractional parts.

Possible range of domain will be 1 ≤ x ≤ 48

We know that perfect square between 1 and 48 are

1 , 4 , 16 , 25 , 36

1)

x = 3

√48/3 = √16 = 4

2)

x = 12

√48/12 = √4 = 2

3)

x = 48

√48/48 = √1 = 1

4 0
3 years ago
A square pool has a side length of x feet.A uniform border around pool is 1 footwide.The total area of the pool and the border o
lions [1.4K]
The total area of pool and border = 361  square feet.

Length of square pool = x

Length of square pool plus border =  (x + 1 +1 ) = x + 2

There is 1 foot length on each side on the x  length.

The other length of the square pool and border =  (x + 2)

Area = (x+2)(x+2)

     (x + 2)(x +2) =  361.            Let A = x +2

        A*A = 361
            A²  = 361    Take square root of both sides
             A  = √361
               A = 19

A = x + 2 = 19
       x = 19 - 2
       x = 17

Area of square pool = x*x = 17*17 = 289

Area of the pool = 289 square feet.
8 0
3 years ago
Marilyn uses a credit card with a 19.9% APR compounded monthly to pay for car repairs totaling $991.38. She can pay $410 per mon
Leokris [45]
Marilyn's finance charge at the end of the first month will be
  $991.38 × 0.199/12 = $16.44
The balance subject to the next month's finance charge will be
  $991.38 +16.44 -410.00 = $597.82

The finance charge at the end of the second month will be
  $597.82 × 0.199/12 = $9.91
The balance remaining after the second payment will be
  $597.82 +9.91 -410.00 = $197.73

The finance charge applied at the end of the third month is
  $197.73 × .199/12 = $3.28
so Marilyn can make one final payment of
  $197.73 +3.28 = $201.01
to pay off the balance.

In all, Marilyn has paid 2×$410.00 +201.01 = 
  $1021.01 . . . . . . . . corresponds to the first choice

_____
In real life, Marilyn's credit card may not accrue any finance charge until after the first statement on which the charge appears. Thus the total cost of the purchase may be only $1004.02. The attached spreadsheet shows the beginning balance and the finance charges for each month for the two different scenarios.

8 0
3 years ago
Suppose a city with population 800,000 has been growing at a rate of 5% per year. If this rate continues, find the population of
AleksandrR [38]

Answer:

2,340,208.5 or 2,340,209

Step-by-step explanation:

You could answer this by multiplying the current population of 800,000 by 1.05 (1.05 represents the annual growth rate of population) and do that 22 times.  But that would take a while.

we got 1.05 because the formula says that y = a( 1 + r ) power t

for a we will give it 1

so y = 1 ( 1 + 0.05) power t

it will give us 1.05

to do this faster, you would first calculate (1.05)22and then multiply this by 800,000.

So, 800,000 x (1.05)22 = 2,340,208.5 or 2,340,209

5 0
2 years ago
You type 4500 words per hour. How many words do you type<br> per minute?
sattari [20]

Answer:

<u>you type </u><u>75</u><u> words per minute.</u>

Step-by-step explanation:

since there are 60 minutes in an hour, simply divide 4,500 by 60 to get 75. i hope this helps you! good luck and have a great day. :)

7 0
3 years ago
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