In John's experiment, the independent variable is the condition of the groups (listening to music or sitting in silence), the dependent variables are pulse and blood pressure, and the control variables could include room temperature, the timing, the duration of the experiment, and the use of consistent measurement devices.
Explanation:In this experiment conducted by John, the independent variable is the condition under which each group is placed—which is, one group listening to soothing music and the other group sitting in silence. This is the independent variable because it's the factor that John changes or manipulates during the experiment.
The dependent variables here would be the pulse and blood pressure of the individuals in both groups. These variables are considered dependent because their values may change based on the effect of the independent variable (i.e., the type of noise the group is subjected to).
The constants, or control variables, in this experiment could include the room temperature, the timing of the experiment, the duration for which the conditions are applied (the length of the song), and the same pulse and blood pressure checking device, among others. These are the factors that remain the same throughout the experiment to ensure that the results are only influenced by the independent variable and not by any other factors.
Learn more about Experimental Variables here:https://brainly.com/question/31503386
#SPJ11
Pre cal/cal master needed
F(x)= 2x^2 + 3x-2 and g(x)= x-2
find equation for f(g(x))
My answer : 2x^2 -8 +3x-8
True answer: 2x^2 -5x
How do we get true answer? I plugged in g(x) into the x's of F(x) but got a waaaaaay different answer.
An urn contains 8 red balls, 8 white balls, and 8 blue balls, and a sample of 5 balls is drawn at random without replacement. Compute the probility that all of the balls in the sample are the same color.
Problem Page A science fair poster is a rectangle 48 inches long and 24 inches wide. What is the area of the poster in square feet?
48/12 = 4 feet
24/2 = 2 feet
4 *2 = 8 square feet
Answer:
8 feet squared
1/3 (9x+3)=3x+1 what does x equal
The motorcycle engine on a kawasaki ninja 1000 has a displacement of 1043 cubic-centimeters (cm3). in order to calculate its engine displacement in cubic-inches (in3) what unit conversion factor would you use to multiply the given displacement
[tex]\boxed{\boxed{ \ 0.061 \frac{inch^3}{cm^3}\ }}[/tex]
Further explanationWe will calculate the unit conversion factor used to convert its engine displacement from cubic-centimeters to cubic-inches.
The relationships between inch and cm are as follows:
[tex]\boxed{ \ 1 \ inch = 2.54 \ cm\ }[/tex]
Inches and cm represent units of length.
Made into fractions, 1 inch as the denominator and 2.54 cm as the numerator.
[tex]\boxed{ \ \frac{1 \ inch}{2.54 \ cm} \ }[/tex]
As a unit conversion factor of volume, the numerator and the denominator in cubic.
[tex]\boxed{ \ \frac{(1 \ inch)^3}{(2.54 \ cm)^3} \ }[/tex]
[tex]\boxed{ \ \frac{1 \ inch^3}{16.387 \ cm^3} \ }[/tex]
Thus, we get the unit conversion factor
[tex]\boxed{\boxed{ \ 0.061 \frac{inch^3}{cm^3}\ }}[/tex]
Let's use this unit conversion factor to calculate its engine displacement in new units.
[tex]\boxed{= 1,043 \ cm^3 \times 0.061 \ \frac{inch^3}{cm^3}}[/tex]
Note for cm³ units that have been crossed out.
The conversion result is [tex] \ \boxed{ \ 63.623 \ inch^3\ }[/tex]
Learn moreConvert cubic-kilometers to cubic-meters https://brainly.com/question/1446243How to write in scientific notation brainly.com/question/7263463 Calculating mass based on density and volume brainly.com/question/4053884Keywords: the motorcycle engine, Kawasaki Ninja 1000, 1043 cubic-centimeters (cm³), to calculate, its engine displacement, in cubic-inches (in³), what unit conversion factor
chloe is sorting items at a thrift store. She finds a box of tiny blocks that has 1,344 written on the outside. She can see that each layer in the box has 64 blocks. How many layers of blocks are there?
Answer: There are 21 layers of blocks.
Step-by-step explanation:
Since we have given that
Number of blocks in a box = 1344
Number of blocks in each layer = 64
We need to find the number of layer of blocks.
So, the number of layer of blocks is given by
[tex]\dfrac{1344}{64}\\\\=21[/tex]
Hence, there are 21 layers of blocks.
Solve for q 8r-5q=3
A soccer ball is kicked into the air from the ground. If the ball reaches a maximum height of 25 ft and spends a total of 2.5 s in the air, which equation models the height of the ball correctly? Assume that acceleration due to gravity is –16 ft/s2.
Find the true balance:
Check register balance:$463.80
Bank statement balance: $592.53
Outstanding checks: $49.80 and $86.93
Service charge: $8.00
A. $592.53
B. $584.53
C. $327.07
D. $455.80
Answer:
D. $455.80
Step-by-step explanation:
True Balance = Bank Statement - Outstanding Checks
= $592.53 - ($49.80 + $86.93)
= $455.80
which undefined using the undefined terms point más line?
A angle
B circle
C parallel lines
D ray
please help 13(3+2x)−1=10
Write 3.16 as a mixed number in lowest terms
Solve for x: 1/4(4x+15)=24
which is 625 written as a power of 5 (exponets) A. 4*5 B.3*5 C.5*3 D.5*4
Specify 3 fractions with different denominators that have an LCD of 24
Solve the system using the elimination method.
2x + 2y + 5z =−1
2x − y + z =2
2x + 4y − 3z =14
What x,y, and z?
Convert 1.2x10^(-2) into standard form
n standard form, we express it without using scientific notation, so [tex]1.2\times10^{-2}[/tex] becomes 0.012.
We have,
In scientific notation, a number is expressed as the product of a coefficient between 1 and 10 and a power of 10.
Given [tex]1.2\times10^{-2}[/tex],
We can rewrite it by moving the decimal point two places to the left to obtain 0.012.
The coefficient 0.012 is between 0.01 and 0.1, which is equivalent to 1/100 or 1 divided by 10 raised to the power of 2.
Thus, we can write it as 1.2 multiplied by 10 raised to the power of -2.
Thus,
In standard form, we express it without using scientific notation, so [tex]1.2\times10^{-2}[/tex] becomes 0.012.
Learn more about expressions here:
https://brainly.com/question/3118662
#SPJ6
Find the probability of randomly selecting 4 good quarts of milk in succession from a cooler containing 20 quarts of which 5 have spoiled
The question asked is related to probability, which is a topic in Mathematics. After calculating the probability of selecting a good quart of milk four times in a row (considering that the quantity decreases each time a good quart is selected), the probability equates approximately to 0.3 or 30%.
Explanation:The given question is a statistical problem related to probability and involves the concept of independent events. In this case, each quart of milk being good or spoiled is an independent event, meaning the outcome of one event doesn't affect the other.
In the cooler, there are 20 quarts of milk in total, 15 of which are good (20 - 5 spoilt quarts equals 15 good ones). Hence, the probability of selecting a good quart of milk at first is 15/20, or 0.75.
After removing one good quart, there are now 14 good quarts out of 19. Hence, the probability of drawing a second good quart is 14/19. We can calculate the probabilities for the third and fourth quarts in the same way, resulting in 13/18 and 12/17 respectively.
Since these are independent events, the probability of all these events happening is the product of their individual probabilities. Therefore, the answer is 0.75* (14/19)* (13/18)* (12/17), which is approximately 0.3 or 30%.
Learn more about Probability Theory here:https://brainly.com/question/31469353
#SPJ2
A principal of $1,000 is invested in an account paying an annual interest rate of 4% using the formula A=P(1+r/n) ^nt
find the amount in the account after 2 years if the account is compounded annually
Fine the missing coordinate of the ordered pair
In a certain grocery store, strawberries cost $5.92 per pound ( 5.92 dollars/lb ). what is the cost per ounce? express your answer numerically to the hundredths place.
Find the area of the rectangle?! Please :)
Find the numerator of the equivalent fraction with denominator 12 :
1/2
The numerator of the equivalent fraction with denominator 12 for 1/2 is 6. This comes from multiplying both the numerator and denominator of 1/2 by the same number (6).
Explanation:To find the numerator of the equivalent fraction with denominator 12 for 1/2, we simply multiply both parts of the fraction by the same number such that the denominator becomes 12. We know that 2 * 6 equals 12, so we multiply the numerator 1 by 6 as well, which gives us the numerator 6.
Therefore, the fraction 1/2 is equivalent to 6/12.
Learn more about Equivalent Fractions here:https://brainly.com/question/18040047
#SPJ2
Solve for A. R = x(A + B) A = (R - B)/x A = (B - Rx)/x A = (R - Bx)/x
In the given equation of the provided problem, the solution for A is A = [tex]\frac{R - xB}{x}[/tex].
Mathematically, an equation is a statement that asserts the equivalency of two expressions. It consists of two hands, the left-hand side( LHS) and the right-hand side( RHS), separated by an equal sign( =). The LHS and RHS can be numbers, variables, constants, or further complex fine expressions.
To solve for A in each of the given equations, we'll isolate the variable A on one side of the equation. Let's go through each equation:
R = x(A + B)
To solve for A, we'll start by expanding the expression on the right side:
R = xA + xB
R - xB = xA
Divide both sides of the equation by x to solve for A:
A = [tex]\frac{R - xB}{x}[/tex].
Therefore, the solution for A is A = [tex]\frac{R - xB}{x}[/tex].
Learn more about Equation here:
https://brainly.com/question/29657992
#SPJ4
The temperature in Minneapolis changed from -7°F at 6 AM to 7°F at noon. how much did the temperature increase?
50 POINTS!!! DO NOT ANSWER JUST FOR THE POINTS!!! IF YOU DO, IF YOU DO ALL OF YOUR EARNED POINTS WILL BE TAKEN~~~~~~~~~~~~~~~
Find this a bit complicated. Please explain and show work with steps.
Suppose f(x)=–x²–4x+4. Compute the following:
A. f(–5)+f(5)=
B. f(–5)–f(5)=
A. f(-5) = -(-5)^2-4(-5)+4 = -1
f(5) = -(5)^2-4(5)+4 = -41
-1 + -41 = -42
B. -1 - -41 = 40
Select the expression that has a quitiont greater than 1. Explain your reasoning.
4 2/3 divided by 5 1/4= 3 1/8 divided by 2 2/5=
1 6/7 divided by 2 1/3= 5 3/4 divided by 7 3/8=
Final answer:
To find the expression with a quotient greater than 1, we convert the mixed numbers into improper fractions and perform the division for each expression. The expression that gives a quotient greater than 1 is 5 3/4 divided by 7 3/8.
Explanation:
To find the expression that has a quotient greater than 1, we need to divide the given fractions. Let's examine each expression:
4 2/3 divided by 5 1/4: To divide mixed numbers, we convert them into improper fractions and then perform the division. In this case, the quotient is less than 1.
3 1/8 divided by 2 2/5: Similar to the first expression, we convert the mixed numbers into improper fractions and divide. The quotient is also less than 1.
1 6/7 divided by 2 1/3: Again, convert the mixed numbers into improper fractions and perform the division. The quotient is less than 1.
5 3/4 divided by 7 3/8: Convert the mixed numbers into improper fractions and divide. The quotient is greater than 1, so this is the expression we're looking for.
Therefore, the expression with a quotient greater than 1 is 5 3/4 divided by 7 3/8.
The denominator of a fraction is 1 more than the numerator. If both the numerator and denominator are decreased by 3, the resulting fraction is equal to 4/5. Find the fraction
Point C(3.6, -0.4) divides in the ratio 3 : 2. If the coordinates of A are (-6, 5), the coordinates of point B are . If point D divides in the ratio 4 : 5, the coordinates of point D are
Answer:
I just had to do this problem and,
B is (10, -4) and D is (58/9, -2)
Step-by-step explanation:
What's S divided by 8=2 ?.....Answer needed ASAP.