Answer:
The question is incomplete, below is the complete question
You are conducting an experiment to evaluate how the number of hours spent exercising each week affects blood pressure. What is the independent variable in this experiment?
The intensity of the exercise.
The amount of exercise each week.
Blood Pressure
The type of exercise.
Answer:
The amount of exercise each week.
Step-by-step explanation:
The two major kinds of variables in a scientific experiment are the independent and dependent variables.
The independent variable is the variable whose values are completely under the complete manipulation of the experimenter. The experimenter decides what value to assign to the variables in this category and the effect of the manipulation of the independent variable determines the outcome variable. In this example, the amount of exercise each week, which is determined by the number of hours exercised each week is subject to the experimenter, hence it is the independent variable
The dependent or outcome variable is the variable whose values depend on the effect of the manipulation of the independent variable. This variable is not directly subject to the manipulation of the experimenter. In this example, the blood pressure gotten after the exercise is the outcome variable.
The variables in an experiment can be dependent or independent
The independent variable in the experiment is: the amount of exercise each week.
From the question, the parameters are:
Exercise intensity Amount of exercise each week. Blood Pressure Type of exercise.
For a variable to be considered as the independent variable, then the variable is not influenced by other variables or parameters.
Within the scope of this question, the independent variable is the weekly amount of exercise
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Personal Finances Practice Active 1 2 You are starting a new job in sales for the company Buy 'n Large. Your hourly wage is $10.00 per hour and you get time and a half for anything over 40 hours. Based on a 5-day work week, 8-hour day, and 52 week year, determine your annual gross base salary a $21,650 C. $20,800 b. $18,798 d. $19,980
Answer:
C.20,800
Step-by-step explanation:
10.00 per hour so 10x8=80
then 80x5=400
400x52=20,800
If twice the number, added to 3 is divided by the number plus 9, the result is three halves. Find the number
Answer:
x=21
Step-by-step explanation:
(3+2x)/(x+9)=3/2
(x+9)(3+2x)=(3/2)(x+9)
3+2x=(3x+27)/2
2(3+2x)=3x+27
6+4x=3x+27
x=21
2x-1/15=7.2/3 Find x
Answer:
x = 18.5
Step-by-step explanation:
If you do the butterfly method, you should get 2x-1 = 36
2x = 37
x = 18.5
Which expression is equivalent to 1/3 p + 15
1/3 (p+45)
1/3 (p+5)
3 (p+45)
3(p+5)
Answer:
[tex]1/3 (p+5) [/tex]
Step-by-step explanation:
[tex]1/3 p + 15 = \frac{1}{3} p + 15 = \\ \frac{p + 5}{3} = \frac{1}{3} ( p+ 5)[/tex]
♨Rage♨
Math help! DUE IN 30 MINUTES (50 points)
Answer: i won't tell you the answer but i will break it up for you so i can make easier for you
Step-by-step explanation: (-5x^2) (y^c) x (x^5) (2y^3)(5x^7)(y^6)(2) Or for the ones for numerator and denominator you can do this
(x^5)
____ = ( -5x^7)
______
(2)
(2y^3)
So for the one with numerator and denominator i got a stuck on a little but i tried doing this way if you like this way i can keep it like this if you dont i can change it
what is the bed what is it
Answer:
A bed is a type of object a person uses to sleep on. It usually contains blankets and pillows
Step-by-step explanation:
Can i have brainliest?
What is the image point of
(1,4)(1,4)
(1,4) after a translation left 5 units and down 5 units?
Answer:
(-4,-1)
Step-by-step explanation:
Answer all of these questions correctly. Will give brainliest.
Answer:
1-5
3-7
8-4
2-6
6-3
3-7
Step-by-step explanation:
please answer this!
giving brainliest
Answer:
5. 65
6. 80
7. m<7 and m<2
Sue sees 30 adult elephants and 18 baby elephants at the zoo. What is the ratio of adult elephants to baby elephants
Answer: 30:18 or 30 to 18
Step-by-step explanation:
HELP ME PLEASE!! This is due today!! Use kcf and show ur work plzz!
Answer:
[tex]\frac{3}{2} \textrm{ cups of flour}[/tex]
Step-by-step explanation:
the ratio of cups of flour per 1 cup of water:
[tex]\frac{2\frac{1}{2}}{1\frac{2}{3}}=\frac{\frac{5}{2}}{\frac{5}{3}}=\frac{3}{2}[/tex]
Someone please help
Me with this
Answer:
y= 1/3x + 1.
Step-by-step explanation:
SHNERPY GERPBY
Put the steps of the Electoral College Process in order.
Question 5 options:
First candidate to 270 electoral votes wins the presidency.
Electors cast the official vote.
Popular vote.
Whoever wins the state, gets all of that state's electoral votes.
Answer: (number 1 is the popular vote) (number 2 is whoever wins the state gets all the electoral votes) (number 3 is electors cast the official vote) (and finally at number 4 the first candidate to 270 wins the election)
After the first essay examination in a class, a random sample of five papers was selected. The grades were 60, 75, 80, 70, and 90. What would be the 90% confidence interval for the mean grade of all the students?
Answer:
68.6433≤x≤82.3568
Explanation
confidence interval formula is expressed as
CI = xbar ± z × S/√n
xbar is the mean
z is the z score at 90% = 1.645
s is the Standard deviation
N is the sample size = 5
xbar = 60+75+80+70+ 90/5
xbar = 375/5
xbar = 75
Get standard deviation
SD =√\sum(x-xbar)²/N
SD = √(60-75)²+(75-75)²+(80-75)²+(70-75)²+(90-75)²/5
SD = √15²+0²+5²+5²+15²/5
SD = √225+50+225/5
SD = √500/5
SD =√100
SD = 10
Substitute the derived values into the formula
CI = 75±1.645 × 10/√5
CI = 75 ± (1.645×4.4721)
CI = 75±7.3568
CI = (75-7.3568, 75+7.3568)
CI = (67.6433, 82.3568)
Hence the 90% confidence interval of the student is:
68.6433≤x≤82.3568
Josh rents a kayak at a nearby state park. He pays a flat rate of $12.99 plus $3.75 for each hour that he spends in the water. Josh spends 4.5 hours on the river. How much did he spend?
A goose is flying horizontally at an altitude of 300 ft and a speed of 50 ft/sec passes directly over a pond. Find the rate at which the distance from the goose to the pond is increasing when it is 500 ft away from the pond.
Answer:
The rate at which the distance from the goose to the pond is increasing is approximately 42.875 feet per second.
Step-by-step explanation:
We assume that goose is flying at constant velocity. After reading carefully the statement of the problem, we create the following geometrical diagram, which is included at the end of this explanation and represents the following Pythagorean identity:
[tex]x^{2}+y^{2} = r^{2}[/tex] (Eq. 1)
Where:
[tex]x[/tex] - Horizontal distance of the goose from pond, measured in feet.
[tex]y[/tex] - Vertical distance of the goose from pond, measured in feet.
[tex]r[/tex] - Resultant distance of the goose from pond, measured in feet.
We find the rate of change in time at which resultant distance is increasing by differentiating on (Eq. 1):
[tex]2\cdot x \cdot \dot x + 2\cdot y \cdot \dot y = 2\cdot r \cdot \dot r[/tex]
[tex]x\cdot \dot x + y\cdot \dot y = r\cdot \dot r[/tex]
[tex]\dot r = \frac{x\cdot \dot x + y\cdot \dot y}{\sqrt{x^{2}+y^{2}}}[/tex] (Eq. 2)
Where:
[tex]\dot x[/tex] - Rate of change of horizontal distance, measured in feet per second.
[tex]\dot y[/tex] - Rate of change of vertical distance, measured in feet per second.
[tex]\dot r[/tex] - Rate of change of resulting distance, measured in feet per second.
If we know that [tex]x = 500\,ft[/tex], [tex]y = 300\,ft[/tex], [tex]\dot x = 50\,\frac{ft}{s}[/tex] and [tex]\dot y = 0\,\frac{ft}{s}[/tex], the rate at which the distance from the goose to the pond is increasing is:
[tex]\dot r = \frac{(500\,ft)\cdot \left(50\,\frac{ft}{s}\right)+(300\,ft)\cdot \left(0\,\frac{ft}{s} \right) }{\sqrt{(500\,ft)^{2}+(300\,ft)^{2}}}[/tex]
[tex]\dot r \approx 42.875\,\frac{ft}{s}[/tex]
The rate at which the distance from the goose to the pond is increasing is approximately 42.875 feet per second.
1. Rosalie bought 0.2503 kg of garlic, 0.17 kg tomatoes, 2.05 kg of onions and 1.12 kg of
ginger. What was the total weight of this item?
answer is 3.5903 or 3 kg 5903 gram
Solve for x, y, and z in the figure below.
47° 58°
x
y° / 81°
zº
N
оа
Ob
Ос
x = 34, y = 99, z = 41
x = 41, y = 92, z = 41
x = 72, y = 61, z = 41
X = 63, y = 70, z = 41
Od
Answer:
Option (A)
Step-by-step explanation:
From the given triangle in the picture,
∠y and the angle measuring 81° is a pair of supplementary angles (linear pair angles).
m∠y + 81° = 180°
m∠y = 180° - 81°
= 99°
By the property of a triangle,
x° + y° + 47° = 180°
x° + y° = 180° - 47°
x° + y° = 133°
For y = 99°
x° + 99° = 133°
x° = 133° - 99°
= 34°
Similarly, z° + 58° + 81° = 180°
z° + 139° = 180°
z° = 180° - 139°
z° = 41°
Therefore, Option (A) will be the correct option.
Applying the definition of the straight line angle and sum of triangle, the values of the variables in the figure are:
x = 34, y = 99, z = 41Recall:
Angles on straight line = 180°Sum of triangle = 180°Thus:
y° + 81° = 180° (angles on a straight line)
Subtract 81 from each sidey° = 180° - 81°
y° = 99°
x° + y° + 47° = 180° (sum of triangle)
Substitutex° + 99° + 47° = 180°
x° + 146° = 180°
Subtract 146° from each sidex° = 180° - 146°
x° = 34°
z° + 81° + 58° = 180° (sum of triangle)
z° + 139° = 180°
Subtract 139° from each sidez° = 180° - 139°
z° = 41°
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In Fairbanks, Alaska, the average temperature in January is -9.7°F. The
average temperature in July is 62.4°F. On average, how many degrees
colder is Fairbanks in January than in July?
Answer:
72.1 degrees... 72 point 1 degress in case you cant see the ( . )
Step-by-step explanation:
62.4 minus -9.7= is 72.1
A guy-wire is attached to a pole for support. If the angle of elevation to the pole is 67° and the wire is attached to the ground at a point 137 feet from the base of the pole, what is the length of the guy wire (round to 2 decimal places)
Answer:
350.62 feet
Step-by-step explanation:
Suppose you purchase a car using an installment loan for $26,000 for 48 months at 5% annual rate. Your payment is $598.76. Which is nearest to the total finance charge?
Answer:
7
Step-by-step explanation:
1/9 , Find the quotient in its simplest form .
Answer:
the simplest form of 1/9 is: 1/9
Step-by-step explanation:
1. A number that will divide evenly into both the numerator and denominator so it can be reduced. No such number exists for 1 and 9.
2. The numerator must be greater than the denominator, an improper fraction, so it can be converted to a mixed number. 1 is not greater than 9.
2) Which of the following equations has a slope (m) of -3 and a y-intercept 1 point
(b) of 8? *
O y = -3x - 8
O y=-3x + 8
Oy= 8x - 3
solve for x explain pls
6+2x+31=x+26
[tex] \frac{3}{8} + \frac{1}{7} [/tex]
cual es el resultado?
Answer:
El resultado es:
[tex]\displaystyle \frac{29}{56}[/tex]
Step-by-step explanation:
Suma de fracciones
Vamos a sumar:
[tex]\displaystyle \frac{3}{8}+\frac{1}{7}[/tex]
Debemos encontrar el mínimo común múltiplo (MCM) entre los denominadores, en este caso, 7 y 8.
Descomponemos en factores primos:
7=7
8=2*2*2
Se toman los comunes y no comunes con máximo exponente, así que el MCM es 7*8=56.
Se procede a dividir el MCM entre cada denominador y al multiplicarlo por su numerador correspondiente:
[tex]\displaystyle \frac{3}{8}+\frac{1}{7}=\frac{3*7+1*8}{56}=\frac{29}{56}[/tex]
El resultado es:
[tex]\displaystyle \frac{29}{56}[/tex]
Solve for x. What is the root? If there is no root, choose none.
Answer:
4
Step-by-step explanation:
At a certain intersection, the traffic light is red for 15 seconds, yellow for 5 seconds and green for 30 seconds. Find the probability that, of the next eight cars that arrive randomly at the light, exactly three will be stopped by a red light.
Answer: 0.254
Step-by-step explanation:
Given that:
Number of cars = number of trials (n) = 8
Number that will be stopped by a red light = Numbe rof successes (r) = 3
Probability of success :
Red light = 15 seconds ; yellow = 5 seconds ; green = 30 seconds
P(red) = p(success) = p = 15 / (15 + 5 + 30) = 15/50 = 3 /10 = 0.3
1 - p = 1 - 3/10 = 7/10 = 0.7
Using the binomial probability relation:
p(exactly 3):
P(8, 3) = 8C3 * p^3 * (1-p)^(8-3)
P(8, 3) = 8C3 * p^3 * (1-p)^5
P(8, 3) = 56 * 0.3^3 * 0.7^5
= 0.25412
= 0.254
Does the set of ordered pairs {(0,4),(2,6),(4,2), (6,2), (8,6)} represent a function?
Answer:
yes it does
Step-by-step explanation:
the x numbers do not repeat
Yes, the given relation is function.
What is function?An expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).
Given:
set of ordered pairs= {(0,4),(2,6),(4,2), (6,2), (8,6)}
As, we know that the function has one input with corresponding one output.
So, we can see from the ordered pair that no input value have repeated and have respective output.
Hence, the relation is function.
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rounding to the nearest tenth, which of the following give an overestimate?
45.07 × 3.45
19.74 × 5.53
8.16 × 60.29
2.92 × 77.81
32.86 × 10.4
1. 157.5108.35
2. 108.35
3. 494.46
4. 233.7
5. 342.16
Step-by-step explanation:
HELP ASAP
IDK WHAT THIS IS HELP
Answer:
b. [tex]\frac{13}{6}[/tex]
Step-by-step explanation:
(15, 3) (9, -10)
[tex]\frac{y2 - y1}{x2 - x1}[/tex]
[tex]\frac{-10 + -3}{9 - 15}[/tex]= [tex]\frac{-13}{-6}[/tex] = [tex]\frac{13}{6}[/tex]
