Answer:
It is an example of an observational study.
Step-by-step explanation:
The given number case is example of an observational study.
What is Observational study?Observational studies are ones where researchers observe the effect of a risk factor, diagnostic test, treatment or other intervention without trying to change who is or isn't exposed to it. Cohort studies and case control studies are two types of observational studies.
Given:
In a study to support drug discovery for patients with lung cancer, patients were divided into 3 groups based on the severity of the disease.
Smoking and alcohol consumption habits were recorded for all 3 groups.
The above is somehow the example of research which requires an observation which does not change any data.
Learn more about observational study here:
https://brainly.com/question/28191144
#SPJ2
Robert invested $25,000 in an account that pays 4.5% interest compounded weekly. After 3 years,
what is the balance of his account?
Answer:
28,375 dollars
Step-by-step explanation:
25,000 times .045 = 1,125
1,125 times 3 equals 3,375
25,000 + 3,375 = 28,375
hope this helps you :)
Point L is on line segment KM. Given LM = 3x + 3, KM = 5x + 4, and
KL = 5x + 1, determine the numerical length of KM.
Answer:
[tex]KM = 4[/tex]
Step-by-step explanation:
Given
[tex]LM = 3x + 3[/tex]
[tex]KM = 5x + 4[/tex]
[tex]KL = 5x + 1[/tex]
Required
Determine KM
The relationship between the given parameters is:
[tex]KM = KL + LM[/tex]
Substitute the values of KM, KL and LM
[tex]5x + 4 = 5x + 1 + 3x + 3[/tex]
Collect Like Terms
[tex]5x - 5x - 3x = 1 + 3 - 4[/tex]
[tex]-3x = 0[/tex]
Divide through by -3
[tex]x = 0[/tex]
Substitute 0 for x in [tex]KM = 5x + 4[/tex]
[tex]KM = 5 *0 + 4[/tex]
[tex]KM = 0 + 4[/tex]
[tex]KM = 4[/tex]
Answer:
98
Step-by-step explanation:
Solve for x.
-15 = 22x + 7
Ox=-4/11
O x = 4/11
Ox= -1
OX=1
Answer:
The answer would be x= -1
3[-x + (2 x + 1)] = X – 1
Your question has been heard loud and clear.
3[-x + (2 x + 1)] = X – 1
= 3[-x+2x+1]= x-1
= 3 [ x+1] = x-1
= 3x+ 3 = x-1
3x-x = -3-1
2x= -4
so , x = -4/2 = -2
Therefore , x = -2
Thank you
Answer:
3x+3=x-1
3x-x=-1-3
2x=-4
x=-2
What is the definition of significant digits?
Answer:
Digits that should be written when doing calculations
-by-step explanation:
Owen creates this model to determine the product of two decimals. Which
equation shows Owen's model?
Answer:
3.7×1.2=3+0.7+0.6+0.14=4.44
Step-by-step explanation:
I added all the choices together I picked the one that had the same answer. Good luck!
Owen's model is represented by -
3.2 x 1.7 = 3 + 2.1 + 0.2 + 0.14 = 5.44
What are algebraic expressions?In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.Mathematical symbols can designate numbers (constants), variables, operations, functions, brackets, punctuation, and grouping to help determine order of operations and other aspects of logical syntax.Given is that Owen creates this model to determine the product of two decimals.
The equation that represents the Owen's model is -
3.2 x 1.7 = 3 + 2.1 + 0.2 + 0.14 = 5.44
Therefore, Owen's model is represented by -
3.2 x 1.7 = 3 + 2.1 + 0.2 + 0.14 = 5.44
To solve more questions on algebraic expressions, visit the link below -
brainly.com/question/1041084
#SPJ5
Emmett earns money from walking dogs and answering serveys. he earns $10 a week for each dog he walks and $.15 for each survey he answers last week and it answered 100 service and $65 part and create any questions that will return in the number of dogs he walked part B solve this equation justifying each step with an algebraic property of the quality parts see how many dollars did Emmett walk last week
Answer:
He had to have walked 5 dogs and done one survey
Step-by-step explanation:
HELP!!
enter the terms and the coefficients of the expression.
-60+ 6p - 4z
The terms are
and___,___,____
The coefficients are
and___,____,___
Answer:
Step-by-step explanation:
Terms Coefficient
-60 -60
6p 6
-4z -4
Answer:
The terms of expression are −30, 6p, and −4z.
The coefficients are 6 and −4.
what is the slope of the line Y equals 3
y = 3 is written in slope-intercept form (y = mx + b).
The only variable we are given in this equation is "b" which is "3".
We don't have a slope variable at all which means the slope is 0 or undefined.
The y-intercept is 3.
Best of Luck!
Evaluate f(4) =6(4)+5
X=4
Need answers ASAP
Sounds like you want to find f(4) when f(x) = 6x+5
If so, then
f(x) = 6x+5
f(4) = 6(4)+5 ... replace x with 4
f(4) = 24+5
f(4) = 29
Answer: 29Super simple question could you explain it and write it out WILL MARK BRAINLEST
Answer:
x = 9π
x = 1620°
x ≈ 28.27433
Step-by-step explanation:
Move constant to the right-hand side and change its sign which it'll look like
x = π + 8π
Then collect like terms which youll end up with
x = 9π
John has a debit card with $100.00 on it. He uses his debit card to buy his lunch everyday. His lunch costs $4.50 per day. How many lunches can John buy?
Answer:
He can buy 22 lunches.
Step-by-step explanation:
To find how many he can buy if he had $100, we must divide the cost of one lunch to the amount of money he has.
(Round to the nearest whole number to get the exact amount of lunches that he can buy.)
1 lunch = $4.50
So:
=$100 ÷ $4.50 = 22.222....
=22.222.... = 22
Hope this helps! I'm sorry if it's wrong.
Help needed ASAP will give brainliest please I NEED HELP ITS TIME LIMIT :(
Answer:
RUn on sentence
Step-by-step explanation:
The quotient law states: keep the base the same and
the exponents. *
add
subtract
divide
multiply
A factory makes candy bars and ships them in cases.
• Each case contains 6 boxes of candy bars.
• Each case contains a total of 144 candy bars.
• Each box contains the same number of candy bars.
What is the number of candy bars per box?
Answer:
24 candy bars
Step-by-step explanation:
1case=6boxes of candy bars
1 case=144 candy bars
1 box has the same number of candy bars as the rest
What is the number of candy bars in 1 box
6 boxes = 144 candy bars
1 box = ?
144×1 ÷6= 24 candy bars
1 box has 24 candy bars
I don't understand how to find the values of X and Y. Can anyone explain?
Answer:
y=30
x=29
Step-by-step explanation:
2y=180-120
2y=60
y=30
4x+4=120
4x=116
x=29
x+5l=5
please help i really need it.
Answer:
x = - 46
Step-by-step explanation:
Step 1:
x = 5 - 51
Answer:
x = - 46
Hope This Helps :)
Answer: x= -46
Step-by-step explanation:
-46+51=5
pls help i only need answer no work
Answer:
4. 770 people
5. 16 min
6. 10.8 laps
Step-by-step explanation:
4. 330 people = x
3 hours 7 hours
just cross multiply:
3x = 330(7)
x = 2310 / 3
x = 770 people
5. 15 laps = 30 laps
8 x
just cross multiply:
15x = 30(8)
x = 240 / 15
x = 16 mins
6. 18 laps = x
10 6
just cross multiply:
10x = 18(6)
x = 108 / 10
x = 10.8 laps
The sum of two numbers is 15 and
their difference is 7.
What are the two numbers ?
Smaller number
Larger number
Answer:
Smaller Number=4, Larger Number=11
Step-by-step explanation:
I just guessed and checked
Find the two missing numbers shown with an "*" in the equation.
Answer:
I believe it has now been simplified fo easy conclusion
Which equation represents the following sentence 1/4 of a number +5 equals the number -7?
Ron went to the store with $100.00 he bought 2 belts for $14.00 each, he bought 3 shirts for $15.00 each, and he bought a pair of jeans for $25. How much money did he have left?
Answer:
46
Step-by-step explanation:
100-14-15-25 is 46
During a football play, The partner game 5 yards, Lose 8 and game 2. What is the net gain after the play?
Answer:
3363627273729u283873738282
What do you notice about these two triangles? What's
the same? What's different?
10
Share w
10
15
Answer:
They are the same shape and ratio, but are in different scales/size
Step-by-step explanation:
Graph this function: y–3= – (x+10)
Click to select points on the graph.
Answer:
See below
Step-by-step explanation:
We can simply use a graphing calculator to graph the function
[tex]\boxed{y-3 = -(x+10)}[/tex]
See in the attached file!
Xavier climbs 9 feet up into an apple tree. What integer represents the direction and how far he will climb to get back down to the ground? What does the integer 0 represent in this situation? The integer represents Xavier’s climb down. The integer 0 represents .
Answer:
The answer is "-9 feet and Ground-level".
Step-by-step explanation:
Given value:
total length or distance from apple tree = 9 feets
In the calculation of the distance between both the ground and the tree will be the same.
If he gets higher 9 feet, he will go back to the ground 9 feet, in this case, the represents ground value is equal to 0.
In the calculation of absolute values it value is opposite but the same.
what is the answer 4x - 12x - x
Answer:
-9x
Step-by-step explanation:
Answer:
-9x
Step-by-step explanation:
4x-12x-x
taking 'x' as common variable from three expressions,
x(4-12-1)
x.(-9)
-9x is the answer
what is equivalent to -1.3 - (-1.9)
Answer:
Step-by-step explanation:
-1.3 + 1.9 = 0.6
five more than twice a number x
Answer:
2x+5.
Step-by-step explanation:
FIve more = Add 5.
Answer:
5 more than twice a number is 17. I'm pretty sure that's the answer but I could be wrong.
explain why 2a+3b=5ab
That's not correct. The terms 2a and 3b are not like terms, so we cannot combine them to get 5ab. We simply leave it as 2a+3b.
If you had 2a+3a, then it would simplify to 5a
Similarly, 2b+3b = 5b
Or you could have 2ab+3ab = 5ab
The key is that the variable portions must match up to be able to add them.