Answer: Experimental studies directly influence something to see its effect, but observational studies do not directly influence the subjects.
Step-by-step explanation:
The correct option is D.
In an experimental study, you perform an experiment. In an experiment are made with the objective of validating, refute, or support a given hypothesis, where you observe "what happens" when you modify a given set of parameters. Always in an experiment, we can define the independent and dependent variables, where the independent are the ones that we can modify at will, and the dependent ones are the ones that we observe to see how they react to the changes in the independent variables.
In observational studies, the idea is not changing anything in the object of study, so the scientist in this case are only observers or spectators.
Please help with rush question
Answer: 26 and 1/4
Step-by-step explanation:
Analyze Robin’s reasoning in her answer to the test question about rational or irrational numbers. Does she have a deep understanding of rational and irrational numbers? Does her reasoning make sense? If not, what misconceptions does she have about this topic?
QUESTION: Is 130 rational or irrational? Where would 130 be located on a number line? Explain your reasoning.
ROBIN’S ANSWER: 130 is a rational number because 130 is even. All rational numbers are even and irrational numbers are odd when the numbers are under the square root sign. The square root sign is the opposite of squaring a number. Squaring a number is the same as raising it to the 2nd power. So, to find the value of a number under the square root sign, you divide it by 2. So, 130÷2 is 65. The answer is 65.
Answer:
No, Robin do not have deep understanding of rational and irrational number.
Step-by-step explanation:
Rational number are those numbers that can be represented in the form of [tex]P/Q[/tex] where p and q are integers and q is a non zero denominator like [tex]3/2[/tex], [tex]5/8[/tex] etc.
Irrational number are those numbers that cannot be expressed in the form of [tex]P/Q[/tex] like [tex]\sqrt{2}[/tex], [tex]\sqrt{5}[/tex] etc.
1) 130 is a rational number because it is even: This is not true because rational number has nothing to do with the number being even or odd it should be of the form [tex]P/Q[/tex] with non zero denominator
2)All rational numbers are even and all irrational number are odd under square root: its false because of the same reason stated above.
3) The square root sign is the opposite of squaring a number: true because square root hold a power of 1/2 and squaring is raising it to the power of 2
4) TO find the value of number under the square root we divide it by 2: false because square root means raising the given number to the power of 1/2 and not diving it by 2
Hence, 130 will be plotted to the right hand side of the number line
What is the sum of the integers less than 100 that have both 6 and 9 as divisors?
Answer: 270
Step-by-step explanation:
First, list all the numbers that both 6 and 9 can divide that are under 100. You do this by listing the multiples of both numbers under 100.
Multiples of 6 ⇒ 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, 84, 90, and 96.
Multiples of 9 ⇒ 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, and 99.
From the above, the numbers that can be divided by both are; 18, 36, 54, 72 and 90
Adding these numbers up will give;
= 18 + 36 + 54 + 72 + 90
= 270
What word phrase can you use to represent "5x + 2"?
Answer:
5 times a number plus 2
Which of the following is equal to 2/3
Answer:
4/6, 8/12,16,24
Step-by-step explanation:
help we just learned this today but idk:(:
Answer:
The hypotenuse is always the shortest side length. (False)
What is 1000/480? Thank you.
Answer:
2.0833...
Step-by-step explanation:
3 is on going
Which list of numbers is shown in the number line below? Can someone plzzzz answer ASAPP
The number of list A showed in the number line below. The numbers are -2.5, -1 3/4, 25 %, and 1.5 . Option C is correct.
What is number?A number is a mathematical entity that can be used to count, measure, or name things. For example, 1, 2, 56, etc. are the numbers.
Usually horizontal, a number line is a visual depiction of numbers in a straight line. It has sequentially spaced numerals that are evenly spaced throughout its length.
The number on the left side of the zero represents the negative number and on the right side shows the positive number. The third number is at 25 % of the complete number line and the number at the midpoint shows by the .5 values as 1.5 and 2.5.
Thus, the number of list A showed in the number line below. The numbers are -2.5, -1 3/4, 25 %, and 1.5. Option C is correct.
Learn more about the number here:
brainly.com/question/17429689
#SPJ6
Find the percent of increase or decrease, p, from 12 students to 30 students. Round to the nearest percent.
p = _____%
Answer:
67%
hope this helped :)
PLEASE HELP BEING TOMED WITH GIVE BRAINLIST
Answer:
2/3 times 3/4 =1/2
Good Luck!!!
An investment is made at 7% simple interest of 1 year. It grows to $8988. How much was originally invested?
Answer:
88 is the answer
Step-by-step explanation:
because 44+44=88
what 2 numbers multiplied equal 1 but when added together equal 2
Answer:
1
Step-by-step explanation:
1x1=1
1+1=2
Sasha has a coupon to a local store that gives her 15% off one item. If the item she buys costs ddollars, the amount she will be charged can be represented by this
expression
0.850
Which of these is equivalent to the expression?
1 d+0.15d
2 d-0.15d
3 0.15d
4 1.15d
Answer:
2
Step-by-step explanation:
If d was $10 then 10x.15= $1.50. Then you take 10-1.5 and get $8.50
Which of the following illustrates the Law of Syllogism?
Answer:
if (p-q) and (q-r) then p-r
What are the factors from 1 to 100
Answer;
1, 2, 4, 5, 10, 20, 25, 50, 100
Step-by-step explanation:
PLEASE HELP ASAP WILL GIVE BRAINLEIST!!
What is the equation we use for the constant of proportionality?
All lowercase, no spaces.
Answer:
shouldn't it be "y=kx"
What is the slope of the line that passes through the points (-2, 3) and (-14, -5) ? Write your answer in simplest form.
Answer:
2/3
Step-by-step explanation:
-5-3 / -14-(-2) = 2/3
The slope of the line that passes through the points (-2, 3) and (-14, -5) will be 2/3.
The ratio that y increase as x increases is the slope of a line. The slope of a line reflects how steep it is, but how much y increases as x increases. Anywhere on the line, the slope stays unchanged (the same).
m =(y₂-y₁)/(x₂-x₁)
It is given that the line passes through the points (-2, 3) and (-14, -5),
(x₁,y₁) =(-2, 3)
(x₂,y₂) =(-14, -5)
The slope 'm' of any straight line is given by:
A linear equation has the form y = MX + b in the slope-intercept format. X and Y are the variables in the equation. The values m and b represent the line's slope (m) and the value of y when x is 0.
Substitute the given value in the slope formula,
m = (-5-3) / (-14-(-2)
m =-8 / -12
m = 8 / 12
m = 2/3
Thus, the slope of the line that passes through the points (-2, 3) and (-14, -5) will be 2/3.
Learn more about the slope here:
brainly.com/question/3605446
#SPJ2
Please answer!!
A=1/2bh
Solve for b
Please include work
Answer:
B = 2A/H where b is height, h is height, and a is the area of triangle.
Step-by-step explanation:
A=1/2bh
A=1/2bh (multiply by 2/1 on both side to cancel out on the right side)
2A = bh (divide by h to isolate the b)
2A/h = b (reorder the equation)
B = 2A/H where b is height, h is height, and a is the area of triangle.
What is 9/2 as a decimal
Answer:
4.5
Step-by-step explanation:
Answer:
✧･ﾟ: *✧･ﾟ:* *:･ﾟ✧*:･ﾟ✧
4.5
✧･ﾟ: *✧･ﾟ:* *:･ﾟ✧*:･ﾟ✧
Step-by-step explanation:
A coordinate grid showing Number of T-Shirts on the horizontal x-axis and Total Cost in dollars on the vertical y-axis with 2 lines. The first line is labeled Shirt Box and posses through (0, 30) and the point at (4, 60). The second line is labeled Just Tees and passes through (0, 0) and the point at (6, 63).
The volleyball team at West View High School is comparing T-shirt companies where they can purchase their practice shirts. The graph represents the two companies’ prices. What is the linear equation that represents each T-shirt company?
Shirt Box:
Just Tees:
Answer:
shirt box : y=7.5x + 30
just tee: y= 10.5x
Step-by-step explanation:
just got right on edge 2020
Answer:
D on the first one and B on the second.
Step-by-step explanation:
Escape velocity from the earth’s surface is about 7.0 mi/sec. What is that in mi/hr? a. Use 60 mins = 1 hr and 1 min = 60 seconds as your conversion factors
Answer:
diviend hje
Step-by-step explanation:
bfv fv n vfnfbhjb v n
Answer:
I looked it up and there were no helpful results
Step-by-step explanation:
Question 1. We would like to test the null hypothesis that the treatment (HRT) has no effect on the outcome (CHD), against the alternative hypothesis that the treatment does have an effect. What would be a good test statistic
Answer:
Pearson's r test or Pearson's t- test
Step-by-step explanation:
The null hypothesis is that there is no effect on the outcome against the claim that there is some effect. The Greek letter rho is used to denote the parameter.This test can also be two tailed or one tailed depending on the direction of the parameter.
This test is used for qualitative variables.
H0: ρ= 0 against Ha : ρ≠0
It is possible to use Pearson's r test to find the t- test and do the calculations.
Find the 14th term of the sequence: 15, 23, 31, 39, ...
A 119
B 127
C 112
D 135
Si sumamos cinco unidades al doble de un número el resultado es el mismo que si le sumaramos 7 unidades a dichos números.
¿Cuál es ese número?
51.5:1.2=
|
What is the answer to 1.5 divided by 1.2
Answer:
1.25
Step-by-step explanation:
1.5 divided by 1.2 is 1.25
Hope this helps☺️
Answer:
1.25
Step-by-step explanation:
1.5 / 1.2 = 15/12 = 5/4 = 1 1/4 = 1.25
Imagine that you are making a fruit salad for every quart of blueberries you add you would like to put 3 quarts of strawberries create thre
Answer:
3
Step-by-step explanation:
Kevin but 4 bags of gravel to cover the bottom of his fish think he has a pound of gravel left over how much gravel did Kevin used to cover the bottom of his tank
find the standard matrix of the given linear transformation from r2 to r2 that performs a vertical shear that maps e1 to e1 3e2 with no change in e2 and then reflects the result through x2 axis
Answer:
[1 -3, 0 -1]
Step-by-step explanation:
Let's have two matrices A and B, such that matrix A is a complete matrix on its own, and matrix B is a complete matrix on its own too. Then, we find out that The matrices for this particular operation is
A = [1 0, 0 -1]
B = [1 3, 0 -1]
To be the standard matrix we are looking for, then we multiply matrix A by matrix B, such that
A x B = T
And then, the matrix T is
T = [1 -3, 0 -1]
According to the income section shown below from the 1040EZ form, if a
taxpayer filing her federal income tax return using the Single filing status
enters $8900 on line 4 for adjusted gross income, what would she enter on
line 6 for her taxable income? Assume that nobody can claim the taxpayer as
a dependent.
Answer:
The correct answer is $0
Step-by-step explanation:
The taxable income (line 6) on the 1040EZ form is:
Taxable Income = -$3,650.
If the result is negative, it means the taxpayer's income is below the standard deduction threshold, and her taxable income would be $0.
Here,
To calculate the taxable income (line 6) on the 1040EZ form, we need to subtract the standard deduction from the adjusted gross income (AGI).
For the tax year 2021 (the last available information before my knowledge cutoff in September 2021), the standard deduction for a taxpayer filing as Single is $12,550.
Given that the taxpayer's adjusted gross income (AGI) is $8,900, we calculate the taxable income as follows:
Taxable Income = AGI - Standard Deduction
Taxable Income = $8,900 - $12,550
Taxable Income = -$3,650
If the result is negative, it means the taxpayer's income is below the standard deduction threshold, and her taxable income would be $0.
The taxpayer would not owe any federal income tax in this case.
However, she may still want to file her tax return to claim any potential tax credits or receive a refund if she had taxes withheld from her paycheck during the year.
learn more on income section :
https://brainly.com/question/20405508
#SPJ7
Quadrilateral ABCD has the following vertices:
.
A(6,8)
B(6,-5)
. C(-5, -10)
D(-5,3)
Is quadrilateral ABCD a rhombus, and why?
Answer:
no!!
Step-by-step explanation:
because AB is longer than BC
Answer:
No, because AB is longer than BC
Step-by-step explanation:
Khan Academy
