Answer:
Answered below.
Step-by-step explanation:
1) A double - blind study is simply an experiment in which neither the participants nor the people who carry out the experiment know who is receiving any particular treatment. This method is usually used in order to prevent a biased view in research results.
2) True because randomized simply means that subjects were assigned to the group randomly.
3) Placebo - controlled trial simply means that there was a control group that received only a placebo treatment which is mainly designed not to have real effect.
ASAP! I will give you branilest
Elena wants to make a scale drawing of her bedroom. Her bedroom is a rectangle with length 500 cm and width 300 cm. She decides on a scale of 1 to 50.
b. Elena's bedroom door is 80 cm wide. How wide should the door be on the scale drawing? Explain your reasoning.
(*Hint #1* a good explanation uses Words, Numbers, or Pictures to justify your thinking).
Answer:
1.6cm
Step-by-step explanation:
80/50=1.6 cm
Good Luck!
Which angle is an exterior angle of the triangle? Triangle L M N. Angle L is 1, angle M is 2, angle N is 3. Side M N extends to form angle 4. 1 2 3 4
See the diagram below. The angles 1,2, and 3 are interior angles as they are inside the triangle. The exterior angle is outside the triangle, formed by extending one side out.
Angle 4 is an exterior angle of the triangle. So Option D is correct
What is an angle ?An angle is a mathematical term, which we can define, when two straight lines or rays meet at a common endpoint. The common point is called the vertex of an angle. The word angle comes from a Latin word named ‘angulus,’.
Interior angles:- The inner angle made by the intersection of two polygonal sides.
Exterior angles:- The outer angle made by the intersection of two polygonal sides.
Given that,
The triangle LMN,
Angle L is 1,
Angle M is 2,
Angle N is 3
It can be seen in the diagram.
The angles 1,2, and 3 are interior angles as they are inside the triangle. The exterior angle is outside the triangle, formed by extending one side out.
Hence, the exterior angle is 4
To know more about angle check:
https://brainly.com/question/28451077
#SPJ6
What is the unit rate of the number of miles driven per number of hours of driving?
25 miles per hour
30 miles per hour
35 miles per hour
40 miles per hour
Answer:
35 miles per hour is the answer
The number of measles cases increased 44.4% to 95 cases this year. What was the number of cases prior to the increase
Answer:
65.97 cases
or approx. 66 case
Step-by-step explanation:
(x - 3) - 2x + 6)=-5
Answer: x=8
Step-by-step explanation:
whats is the 39th triangular number
Answer:
The 39th triangle number is 780
A box has a volume of 30 cubic cm. the box is filled with unit cubes, with no gaps or overlaps. each unit cube measures 1 cm in length, 1 cm in width, and 1 cm in height. how many unit cubes fill the box A:90
B:10
C:30
D:33
Answer:
C. 30.
Step-by-step explanation:
Each cube has a volume of 1 * 1* 1 = 1 cu cm.
The answer is 30 unit cubes because 30 *1 = 30.
The box is filled with 30 unit cubes.
The formula to calculate the volume of a cube: -For a cube with side length 'a' volume V is,
[tex]V=a^{3}[/tex] cubic units
In this question, a box has a volume of 30 cubic cm.
The box is filled with unit cubes, with each unit cube measures 1 cm in length, 1 cm in width, and 1 cm in height.
Let [tex]V_{s}[/tex] represents the volume of each unit cube and [tex]V[/tex] represent the volume of the box.
The length of each side of a unit cube is 1 cm.
So, [tex]V_{s}=(1)^{3}[/tex]
⇒ [tex]V_{s}=1[/tex] cubic cm
Let there are n unit cubes filled in the box.
⇒ [tex]V=n\times V_{s}[/tex]
⇒ [tex]30=n\times 1[/tex]
⇒[tex]n=30[/tex]
Therefore, 30 unit cubes are filled in the box.
Hence, option C. 30 is the correct answer.
Learn more about cube here:
https://brainly.com/question/11168779
#SPJ2
A box has a volume of 456 cubic inches, with a length of 1 foot and a height of 4 inches. Determine the width of the box.
Answer:
114
Step-by-step explanation:
1 x 4 x 114 = 456
Answer:
Width: 9.5 inches
Step-by-step explanation:
We have to convert the 1 foot to 12 inches.
New Dimensions: 12in x 4in x ?in
We multiply the 12 by 4 and we get 48.
Now we divide 456 by 48.
We get: 9.5
9.5in is the width of the box.
Help been stuck on this for an hour
Answer:
3 miles per hour is what I got
Step-by-step explanation:
he does 1.25 miles in 25 min as 5/12 hr= 25 min <5/12 * 60 min>
25min /1.25 miles=20 minutes for 1 mile
convert to mph by multiplying by 3 = 60 min or 1 hr for 3 miles
Answer:
3 miles per hour is what Seth's unit rate is
Step-by-step explanation:
uh I don't know to be honest lol
I WILL GIVE EXTRA POINTS AND BRAINLIEST HELPPP PLEASE!!!! SHOW ALL WORK!!!
Solve All 4!!
Answer:
#27 is 2x+5°=5
x+59°=59
#28 is x+64°=64
3x+26°= -26
#29 is 2x+17°=17
x+77°=77
#30 is x+97°=97
2x+32°=32
Step-by-step explanation:
remember what i told you +=positive -=negative
hope this helped you out!
1 2 TIME REMAIN 50:24 How could Theo check his work? Check all that apply. Theo solved n + 5 = 11 for the unknown. The steps he took are shown. He started with 5 tiles. He could substitute 5 forn in the original equation and add. He could substitute 6 for n in the original equation and add. Then he added tiles as he counted up to 11. He could subtract 5 from 11 and check that the answer is 6. He realized he added 6 more tiles to his original 5 to make 11. So he found the unknown to be 6. He could subtract 11 from 5 and check that the answer is 6. O He could put all the tiles in 1 pile to count them to see if there are 11 in all.
Answer:
so first you do the work than check
Step-by-step explanation:
The _____ is a measure of the average speed of the particles in a substance.
PLEASE HELP ASAP!!!!
Find the volume of a right circular cone that has a height of 9.7 ft and a base with a
radius of 7.6 ft. Round your answer to the nearest tenth of a cubic foot.
Answer:
1/3*9.7*Pi*7.6^2 ft^3 and then round to nearest tenth
Step-by-step explanation:
The trick is knowing that the volume of the cone is exactly 1/3 of the volume of the cylinder with the same radius & height. This relation can be derived using integrals.
Answer:
586.7
Step-by-step explanation:
answers may vary to what teachers want but thats what i got according to delta math
Prime number between 60 and 80 with the 10’s digit being one less than the 1st digit
It would be 89.
You can also just look up a list of prime numbers online.
8 over 12 divide 7 over 8
Answer: 19/25
Step-by-step explanation: 8/12 / 7/8 is (rounded) 0.76, and 0.76 as a fraction is 19/25.
A submersible vessel at an elevation of -75 feet to 5 times that elevation what is the vessel’s new elevation
Answer:
375 ft
Step-by-step explanation:
you just multiply it times 5
Answer:
375 ft
Step-by-step explanation:
(3.2 x 104) + (1.4 x 103)
Answer:
477
Step-by-step explanation:
(3.2 × 104) = 332.8(1.4 × 103) = 144.2Plug the answers above in: (332.8) + (144.2)(332.8) + (144.2) = 477I hope this helps!
1+1 what the answer is
Answer:
1+1 = 2
Step-by-step explanation:
HELP PLS!!! 50PTS!!! An explanation is welcome!
Answer:
Its 2 on the x axis
Step-by-step explanation:
312,919,563x500➗999,527
Answer:
312 , 919 , 281 , 0. 500 , 527
Step-by-step explanation:
Please help...
R/5 - 6 = -1
A) r=1
B) r=5
C) r=10
D) r=25
Answer: Its D
Step-by-step explanation:
Cause i have calulator :D
Which graph shows y < x^2 + 1
Answer:It’s the third one.
Step-by-step explanation: i got it right.
¿como se escribe 115.6 millones
en número?
Answer:
Solo multiplica la cifra mensual por los meses del año (12) es decir
115,6 MC x 12 = 1387,2 MC
MC = Millones de Cerdos
espero que te ayude
Step-by-step explanation:
115,600,000
Aplicando proporciones, hay que 115.6 millones en número es escrito como 115.600.000.
Este problema puede ser solucionado por proporciones, aplicando una regla de três.1 millón es escrito como 1.000.000. ¿como se escribe 115.6 millones ?La regla de três es:
1 millón - 1.000.000
115.6 millones - x
Aplicando multiplicación cruzada:
[tex]x = 115.6(1.000.000) = 115.600.000[/tex]
115.6 millones en número es escrito como 115.600.000.
Un problema similar es dado en https://brainly.com/question/24615636
3x + 10+ 2x =50 isks
Answer:
x = 8Step-by-step explanation:
3x + 10+ 2x =50
5x = 50 - 10
x = 40/5
x = 8
The value of x would be equal to 8.
We know that equation is an expression that shows the relationship between two or more numbers, variables, and a mathematical equation is a statement with two equal sides and an equal sign in between.
We are given the equation as;
3x + 10+ 2x =50
Now solve for x;
3x + 10+ 2x =50
Combine like terms;
5x = 50 - 10
x = 40/5
x = 8
The solution will be 8.
Learn more about equations here;
brainly.com/question/25180086
#SPJ6
#9. Solve for x in the equation x - 4 = 7
a) x = -3
b) x = 28
c) x = 11
d) x = 3
Answer:
it could be c: x=11
Step-by-step explanation:
you move the constant (-4) to the right side along with the seven and combine them which gives you eleven
Please help me I need help
Answer:
f(6)=2
f(2)=4
f(0)=7
f(5)=1.5
Step-by-step explanation:
What is the value of -16 - (-34)
Answer: 18
Step-by-step explanation:
Distribute that negative sign like a -1 to get:
-16 + 34 = 18
Evalute the function when x = -2
f(x)=11- 3x
Please help I’m confused by the whole concept
Answer:
f(-2)=17
Step-by-step explanation:
Anywhere you see x replace it with -2
f(-2) = 11 - 3 (-2)
f(-2) = 11 + 6
f(-2) = 17
The sum of the measures of the angles of a triangle is 180. The sum of the measures of the second and third angles is three times the measure of the first angle. The third angle is fifteen more than the second. Find the measures of the three angles.
29jsfsouodpolfkldsfmdsfsdfdssfsdfsadfsd I GOT THE ANSWER IT IS 5
Answer:x=45 y=60 x=75
Step-by-step explanation:
What is the equation of a line that
is parallel to the line y = 2x + 7 and
passes through the point (-2, 4)?
A y=- 2x+3
y = 2x + 4
c
y=-3x-2
Dy = 2x + 8
B
a
A
b
B
Answer:
B. y = 2x + 4
Step-by-step explanation:
Parallel lines will share the same slope: therefore, A and C are out ( they are the negative reciprocals of the equation's slope. The y-value from the point given is 4, meaning the y-intercept for the equation of the parallel line has to be 4 to match the criteria given in the question. So the answer is B.
We want to get a line parallel to y = 2x + 7 that passes through the point (-2, 4). We will see that the correct option is D.
Parallel lines
We define general linear equations as:
y = a*x + b
Where a is the slope and b is the y-intercept.
We know that two lines are parallel if and only if they have the same slope and different y-intercept.
So if we want to have a line parallel to y = 2*x + 7, then our line must also have a slope equal to 2, so we have:
y = 2*x + b
To find the value of b we use the fact that the line passes through (-2, 4), replacing the values of the point in the equation we get:
4 = 2*(-2) + b
4 = -4 + b
4 + 4 = b
8 = b
Then the equation for our line is:
y = 2*x + 8
Then the correct option is D.
If you want to learn more about linear equations, you can read:
https://brainly.com/question/4074386