1+3/8=(8+3)/8=11/8 used per day. 5+1/2=(10+1)/2=11/2 available.
(11/2)/(11/8)=(11/2)(8/11)=88/22=4
Volunteers for a human performance study were randomly divided into two groups. The first group had their flexibility measured in the morning after a short meditation session while the second group had their flexibility measured in the afternoon with no previous meditation session. The flexibility scores of the two groups were compared. This experiment was not double-blind because:
a. some of the volunteers stretched before they went to the study location.
b. volunteers were allowed to keep their eyes open while having their flexibility measured.
c. volunteers were randomized into the two groups.
d. the volunteers knew whether they had meditated before having their flexibility measured.
Answer:
C
Have a wonderful day!
The experiment was not double-blind because volunteers were randomized into the two groups. The correct option is c.
What is a double-blind experiment?A type of clinical experiment where neither the research team nor the subjects are aware of the treatment or intervention they are receiving until the trial is complete. As a result, the study's findings are less likely to be skewed.
Because neither the participant nor the clinician is aware of who has received what treatment, double-blind studies are regarded as the most trustworthy sort of research. This is done in an effort to lessen bias and the placebo effect.
Both the researchers and the test subjects must be uninformed of who is receiving the treatment and who is receiving a placebo in a double-blind trial.
Therefore, the correct option is c. volunteers were randomized into the two groups.
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Michelle pays $66.85 for a costume pattern and 8 yards of fabric. The costume pattern cost $4.85 how much does each yard of fabric cost?
Answer:
I got $7.75.
Step-by-step explanation:
66.85-4.85=62
62/8=7.75.
Sam scored 17 out of 20 in her test, her % score is...... what A 17% B 85% C 80% D 0.85%
Answer:
the answer is 85%
Step-by-step explanation:
To find the percentage you will divide:
17 divided by 20 = o.85
Answer:
B. 85%
Step-by-step explanation:
in order to find out her percentage, you want to do 17/20
the reason we do 17/20 and not 20/17 is because 20/17 gives you 1.1, which is both not an option and does not make logical sense
17/20 = 0.85
in order to make this a percentage, multiply 0.85 by 100
0.85 x 100 = 85
so your answer is 85%, or B
The bus fare in a city is $2.00. People who use the bus have the option of purchasing a monthly coupon book for $28.00. With the coupon book, the fare is reduced to $1.00. Determine the number of times in a month the bus can be used so that the total monthly cost without the coupon book is the same as the total monthly cost with the coupon book
Answer:
56 = 56
Step-by-step explanation:
Given:
Bus fare = $2.00
coupon book = 28.00
bus fare w/ coupon book = $1.00
let x be the number of bus rides.
2.00x = 1.00x + 28.00
2.00x - 1.00x = 28.00
1x = 28.00
x = 28.00
24 bus rides for both to have the same cost.
2.00x = 1.00x + 28
2.00(28) = 1.00(28) + 28
56 = 28 + 28
56 = 56
At the toll booth, the chance that a driver has exact change is 1/4, independent of vehicle. Find the probability that no vehicle has exact change in the first 10 minutes.
Answer:
g
Step-by-step explanation:
b
How many 1/12 make a quarter?
Answer:
3
Step-by-step explanation:
3/12 = .25
.25 = a quarter
plz mark brainliest ! :)
Answer:
3
Step-by-step explanation:
Let the number of 1/12 that make a quarter be x.
x * 1/12 = 1/4
Multiply both sides by 12.
x * 1/12 * 12 = 1/4 * 12
x = 3
Answer: 3
Please help.
Find the value of x
Answer:
X=130
Step-by-step explanation:
because 180-50=130
trust me this is the correct answer
Approximately__ tons of LNG will be produced in may, and approximately 104,489 tons will be produced in___
Help plz :,)
Answer:
Step-by-step explanation:
For all Plato users
Approximately 94437.825 tons of LNG will be produced in May, and approximately 104,489 tons will be produced in October month.
Given that, the production of LNG by an energy company increases by 1.7% each month.
How to find the percentage of the number?Convert the problem to an equation using the percentage formula: P% * X = Y.
Production in April month=91,307+1.7% of 91,307
=91,307+1.7% ×91,307
=92,859.219 tons
Production in May month=92,859.219×(1+1.7%)
=94437.825 tons
Production in June month=94437.825×(1+1.7%)=96,043 tons
Production in July month=96,043×(1+1.7%)=97,676 tons
Production in August month=97,676×(1+1.7%)=99,336.49 tons
Production in September month=99,336.49×(1+1.7%)=1,01,025.21 tons
Production in October month=1,01,025.21×(1+1.7%)=1,04,489 tons
94437.825 tons of LNG will be produced in May, and 104,489 tons will be produced in October month.
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The value of a baseball card can be represented by the equation Y - 3x+ 39, where x represents the number of year
that Robert has owned the card and y represents the total value, in dollars, of the card. What was the value of the card when Robert originally purchased it?
$3
$13
$36
$39
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Answer:
$39
Step-by-step explanation:
Assuming your equation is supposed to be ...
y = 3x +39
The value of y when x = 0 is 39.
The value of the card when Robert purchased it was $39.
Answer: $39
Step-by-step explanation:
Tom had 3 times as many pencils than Max. Tom then gave 24 pencils to Max and they now had the same amount of pencils. How many pencils did they have altogether?
Answer:
24×3=72
Sooo the answer 72✨
Lonnie plans to join the gym. He must pay a $35 membership fee. He will
then pay $5 each month. What is the slope?
Answer:
5
Step-by-step explanation:
The slope will be the constant amount that the cost increases by each month.
In this situation, 5 is the slope, because he has to pay $5 each month.
35 is not the slope, and is instead the y intercept. This is because this is the cost at 0 months, since it is the membership fee.
So, the correct answer is 5.
digits to write the value of the 5 in this number.587,096
Answer: what does the question even mean
Step-by-step explanation:
316.1 -
is about 300. Which decimal, rounded to the nearest whole number, makes the equation true?
O
A. 31.6
B. 15.7
C. 6.1
D.3.16
Answer:
c
Step-by-step explanation:
Solve for y. Thank you.
Answer:
[tex]y = \sqrt{ \frac{wz}{x} } [/tex]
hence c. Patrick Mahomes is right.
Find all real square roots of -36
Answer:
The answer is ±6.
Step-by-step explanation:
The positive and negative square roots of 36 are 6. and −6. Both 6, and −6 are square roots of 36 since they both give 36 when squared:...
6^2=6×6=36
(−6)2=(−6)×(−6)=36
All positive real numbers have a positive and negative real square root which are additive inverses of one another.
The principal square root is the positive one and is the one meant when we use the √... symbol. So:...
√36=6
If we want to refer to the negative square root, then just put a minus sign in front:...
−√36=−6
The two square roots of -36 are 6i and -6i, where i is the imaginary unit.
What is Number system?A number system is defined as a system of writing to express numbers.
Since the square of any real number is always non-negative, there is no real number whose square is equal to a negative number.
Therefore, the expression √(-36) has no real square roots.
However, we can express the square root of -36 using imaginary numbers.
By definition, the imaginary unit "i" is equal to the square root of -1. Using this definition, we can rewrite √(-36) as:
√(-36) = √(36) × √(-1) = 6i
Therefore, the two square roots of -36 are 6i and -6i, where i is the imaginary unit.
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The price of an Item has been reduced by 70%. The original price was $90. What is the price of the item now?
Answer:
The price of the item is $27.
Step-by-step explanation:
$90 is reduced by 70% means: $90 - 0.70*$90 = (1 - 0.70)*$90 = 0.30*$90 = $27. The price of the item is $27 now.
Answer: 63
Reason: My brain
I will give brainliest!
Answer:
B
Hope its right
Step-by-step explanation:
PUT THE NUMBERS IN ORDER FROM LEAST TO GREATEST.
-29/5^2
(1, 2.5)
4,21
5.5
6
9
DONT SKIP ILL GIVE 40 POINTS.!!!
Answer:
boop
Step-by-step explanation:
Which expression is equivalent to 4(3x + 2y) + 5(2x – 4y)?
A 222 - 12y
B 14.2 - 9y C 22x – 2y D 172 4y
Answer:
22x-12y
❤❤
hope its helpful ❤❤❤❤
THANK YOU.
which equation shows that 9 is a factor of 72
Answer:
Step-by-step explanation:
Explain each nature of mathematics in your own undertanding.
A science of measures-
An intellectual game-
The art of drawing conclusions-
A tool subject-
A system of logical procedures-
An intuitive method
Answer:
Each nature of mathematics in my own understanding is written below in complete detail.
Step-by-step explanation:
Now, much more than geometry and arithmetic, mathematics now is a distinct system that compromises with data, computations, and pronouncements from science; with reasoning, inference, and proof; and with mathematical principles of natural appearances, of human response, a system of logical procedures and social systems.
Jack did 3/5 of the problems on his weekend homework before Sunday. On Sunday, he solved 1/3 of what was left and the last 4 problems. How many problems were assigned for the weekend?
Answer:
15 problems were assigned for the weekend.
Step-by-step explanation:
Let x denote the number of problems assigned for the weekend.
Before Sunday, he did 3/5 of the problems, so he is left with (1-3/5)x = 2/5 x of the problems.
On Sunday, he solved 1/3 of what was left of the problems, so he is left with (1 - 1/3)(2/5 x) = (2/3) * (2/5) x = 4/15 x problems.
4/15 x equals 4 because those were the last remaining problems, so we can solve for x:
[tex]\frac{4}{15}x=4\\x = 4 \cdot \frac{15}{4} = 15[/tex]
So 15 problems were assigned for the weekend.
Compound Interest
When Jack turned 21, he decided to start investing $200 a month every year for nine years. At age 30, he decided to stop investing altogether.
Blake started a little later, investing $200 a month every month starting at age 30, all the way until the ripe old age of 67.
Assuming that they were both amazing at investing and made 11% interest per year, how much money will they both have at age 67?
Answer:
Jack $1800 Blake $7400
Step-by-step explanation:
Factorise
x^2 - 5x - 6
Answer:
(x+1)(x-6)
thats the ans :)
the sum of the terms of a sequence 1+ 3 + 5 + 7 + 9
Answer:
if you add it all up it is 25
Step-by-step explanation:
Answer:
25
Step-by-step explanation:
1 + 3 + 5 +7 +9
1+3 = 4
4+5 + 7 +9
4+5=9
9 + 7 +9
9+7 = 16
16 + 9 = 25
Ps: You can just search online
please help ASAP I'll make brainleist
Answer:
D. k= g -3
Step-by-step explanation:
Flip the equation
g−3=k
then Add 3 to both sides
g−3+3=k+3
Y really help in this problem !
I will give you 40 points
Answer:
160
Step-by-step explanation:
Which of the following functions represent exponential growth?
Which of the following functions represent exponential decay?
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Answer:
1. a, b, c - represent growth
2. b, c, d - represent decay
Step-by-step explanation:
If increasing x results in a larger value, the function represents growth. If it results in a smaller value, the function represents decay.
__
To answer these questions, you can look at the base and the exponent. When we say "exponent" here, we mean the coefficient of the exponent variable. There are four possibilities:
growth:
exponent positive, base > 1exponent negative, base < 1decay:
exponent positive, base < 1exponent negative, base > 1__
Growth questions:
1.77^x -- growth
1.5^(x/2) -- growth
0.5^(-x) -- growth (= 2^x)
e^(-t) -- decay (e ≈ 2.718)
Decay questions:
1.7^x -- growth
1.7^(-2x) -- decay
(1/3)^x -- decay (= 3^(-x))
2^(-x) -- decay
what is the domain of f(x)=4 by the power of 2
Answer:
f(x)=16
Step-by-step explanation:
In a shop for every pant there are 3 shirts and for every 9 shirts there are 27 pairs of shoes. Express the ratio of pants to shirts to shoes in the shop.
Answer:
1 : 3 : 9
Step-by-step explanation:
For every Pant = 3 shirts
If
Pant = x ; shirt = 3x
For :
Every 9 shirts = 27 pairs of shoes
Simplifying further :
1 shirt = 3 pairs of shoes
3 shirts = 3 * 3 = 9 pairs of shoes
Expressing as ratio:
1 Pant = 3 shirts = 9 pairs of shoes
1 : 3 : 9