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3 years ago

Pls help!! if f(x) = 2x^2-4x and g(x)=5-2x, evaluate f(x) - g(x) for x=5

Mathematics

1 answer:

Sindrei [870]3 years ago

7 0

Answer is C=35

How? Plug 5 into all the x's and solve for both g(x) and f(x) then finish off by subtracting f(x) from g(x).

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A sample of blood pressure measurements is taken for a group of adults, and those values (mm Hg) are listed below. The values

Slav-nsk [51]

Answer:

Systolic on right

$\hat{CV} =\frac{18.68}{127.5}=0.147$

Systolic on left

$\hat{CV} =\frac{12.65}{74.2}=0.170$

So for this case we have more variation for the data of systolic on left compared to the data systolic on right but the difference is not big since 0.170-0.147 = 0.023.

Step-by-step explanation:

Assuming the following data:

Systolic (#'s on right) Diastolic (#'s on left)

117; 80

126; 77

158; 76

96; 51

157; 90

122; 89

116; 60

134; 64

127; 72

122; 83

The coefficient of variation is defined as " a statistical measure of the dispersion of data points in a data series around the mean" and is defined as:

$CV= \frac{\sigma}{\mu}$

And the best estimator is $\hat {CV} =\frac{s}{\bar x}$

Systolic on right

We can calculate the mean and deviation with the following formulas:

[te]\bar x = \frac{\sum_{i=1}^n X_i}{n}[/tex]

$s= \frac{\sum_{i=1}^n (x_i -\bar X)^2}{n-1}$

For this case we have the following values:

$\bar x = 127.5, s= 18.68$

So then the coeffcient of variation is given by:

$\hat{CV} =\frac{18.68}{127.5}=0.147$

Systolic on left

For this case we have the following values:

$\bar x = 74.2 s= 12.65$

So then the coeffcient of variation is given by:

$\hat{CV} =\frac{12.65}{74.2}=0.170$

So for this case we have more variation for the data of systolic on left compared to the data systolic on right but the difference is not big since 0.170-0.147 = 0.023.

4 0

2 years ago

Please help thank you

matrenka [14]

Answer:

25.9 yd

Step-by-step explanation:

$a^{2}$ + ${b^{2} }$ = $c^{2}$

$(17)^{2}$ + ${b^{2} }$ = $(31)^{2}$

289 + ${b^{2} }$ = 961

Subtract 289 on both sides

${b^{2} }$ = 672

$\sqrt{b^{2} }$ = $\sqrt{672}$

nearest tenth

b = 25.9 yd

7 0

2 years ago

Read 2 more answers

the classroom has four desks in each row there are five rows how many decks five rows how many desks are in the classroom

RUDIKE [14]

5 rows x 4 in each = 20 chairs in the classroom

3 0

3 years ago

The sum of two numbers is -149. One number is 5 less than the other. Find the numbers

PSYCHO15rus [73]

Answer:

-72 and -77

Step-by-step explanation:

-149 divided by 2 is 74.5 and sense we want a 5 difference we divide 5 by 2 to get 2.5 the we take 74.5 and add 2.5 to get - 72 and take 74.5 and subtract 2.5 to get -77.

6 0

3 years ago

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Write 2-3 sentences describing your biggest takeaways from this activity. Use as much academic language (e.g., transversal, para

Paul [167]

Answer:

Evaluate the following exponential function when x = 1.

f (x) = 9 (12)Squared X + 12

F(1) =Evaluate the following exponential function when x = 1.

f (x) = 9 (12)Squared X + 12

F(1) =Evaluate the following exponential function when x = 1.

f (x) = 9 (12)Squared X + 12

F(1) =

Step-by-step explanation:Evaluate the following exponential function when x = 1.

f (x) = 9 (12)Squared X + 12 gg

F(1) = 50

6 0

2 years ago