So, I really need help with functional notation...If anyone could help me solve these problems, I'd be extremely grateful!!Given the function G ( x ) =sqrt 2x-1 , find the value G (1), G(0), G(5), G(-4).
Given the function F ( x ) = x^2 - 3 x + 1, find the value F (-3), F(0), F(1).
Given the function H ( x ) = 3 x - 1, find the value H (2).

Answers

Answer 1

Answer: $g(x)=√(2x-1)$
$g(1)=√(2(1)-1)=√(2-1)=√(1)=1$
$g(0)=√(2(0)-1)=√(0-1)=√(-1)=i$
$g(5)=√(2(5)-1)=√(10-1)=√(9)=3$
$g(-4)=√(2(-4)-1)=√(-8-1)=√(-7)=i√(7)$

$f(x)=x^(2)-3x+1$
$f(-3)=-3^(2)-3(-3)+1=9-(-9)+1=19$
$f(0)=0^(2)-3(0)+1=1$
$f(1)=1^(2)-3(1)+1=-1$

$h(x)=3x-1$
$h(2)=3(2)-1=5$

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Use the value of the linear correlation coefficient r to find the coefficient of determination and the percentage ofthe total variation that can be explained by the linear relationship between the two variables. r = 0.885 (x = weight of male, y = waist size of male)

Answers

Answer:

Step-by-step explanation:

The coefficient of determination = $r^(2) = 0.885^(2)$ = 0.7832

It means about 78% variation in waist size of males can be explained by their weight and about 23% can not be explained.

If Jamie has five dollars and purchases a soda for one dollar and fifteen cents, how much change does Jamie get back

Answers

$3.85, because if you subtract $5 from $1.15 that will equals $3.85

2. Rename .709 as a percent. a. 709% b. 70.9% * c. 79% d. 7.09% 4. Alice plays basketball. In one game she shoots 21 free throws and makes 81.25% of them. Estimate how many free throws she makes.a. about 16 b. about 2 c. about 20 d. about 14 5. Estimate 48% of $20.00. a. about $12.00 b. about $11.00 c. about $15.00 d. about $10.00 * 6. The bill at a restaurant is $100, and Mrs. Johnson wants to leave a 15% tip. Approximately how much money should she leave?
a. about $5.00 b. about $10.00 c. about $15.00 * d. about $20.00 7. Which proportion can be used to solve the following percent problem? What is 50% of 70?
8. What percent of 50 is 15? a. 4% b. 25% c. 30% d. 15% 9. 30% of 60 is what number? a. 15 b. 30 c. 18 * d. 40 The choices with * is what I think the answer is please check them, and help me the others.

Answers

2) Your answer is correct. It is B. 70.9%
4) We can round 81.25% to 80 and 21 shots to 20. 20 x 0.8 = 16.
The answer is A. about 16
5) Your answer is correct. 48% is almost half; half of $20 is $10, so the answer is D.
6) Your answer is correct, C. 15% x 100 = $15
7) The proportion 50/100 = x/70 can help solve this. The answer will be 35.
8) We simply do:
15/50 x 100 = 3/10 x 100 = 30%
9) You are correct, C. 0.3 x 60 = 18

.91 into a fraction

Answers

91/100 - 91 is a prime number and being two decimal places after the "dot" you can use 100 as your denominator (:

0.91 in a fraction is 91/100. Hope that helps?

A hiker walked 12.8 miles from 9:00 am to noon. He walked an additional 17.2 miles from 1:00 pm. What is his average rate for the entire walk, miles per hour?

Answers

(12.8+17.2)/((12-9)+(6-1))
30/(3+5)
30/8
15/4
3.75mph
It's been awhile since I've done this type of math but I hope I got it right.

3 miles per hour. Theres 4 hours between 9 am and 12 and another 6 from 1to 6.so ten hours. then 12.8 plus 17.8 thats 30 then 30 divided by ten is 3 miles per hour. Your welcome :)

What is the y-intercept of the line y + 11=2(x+1.5)