Answer:
See explanation
Step-by-step explanation:
The matched pair experimental design was used here. In this type of design, the experimental units are paired up . Different individuals receive different treatments. A popular type of matched-pairs design is this; a response variable's effect on an experimental unit is measured before and after a treatment is applied.
Reaction time is the response variable here . It is quantitative because it can be counted or measured.
The treatment was water mixed with orange juice with the scent and taste of vodka and subsequently 40% vodka mixed with orange juice.
Food consumption and intake of caffeinated drinks were controlled and set at a fixed level in this experiment.
Age ,gender and weight may also affect the reaction of the seniors to alcohol .
This treatment served the purpose of a placebo thereby working as a control that helps us to establish a baseline treatment that can be used to compare with the results of other treatments .
The research conclusion is that response times are significantly delayed even for low levels of alcohol consumption in seniors .This conclusion can only be applied to healthy seniors that consume a low level of alcohol.
Select all equations that have two solutions. a x^2=16 b 4x^2=0 c x^2=-16 d 3x+2=14 e x^2-1=24 f (x+8)(x-8)=0
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a )
[tex] {x}^{2} = 16[/tex]
[tex]x = ± \: 4[/tex]
Two solutions.
_________________________________
b )
[tex]4 {x}^{2} = 0[/tex]
[tex]x = 0[/tex]
One solution .
_________________________________
c )
[tex] {x}^{2} = - 16[/tex]
[tex]No \: \: solution.[/tex]
_________________________________
d )
[tex]3x + 2 = 14[/tex]
[tex]x = 4[/tex]
One solution.
_________________________________
e )
[tex] {x}^{2} - 1 = 24[/tex]
[tex] {x}^{2} = 25[/tex]
[tex]x =± \: 5[/tex]
Two solutions.
_________________________________
f )
[tex](x + 8)(x - 8) = 0[/tex]
[tex]x = - 8 \: \: or \: \: x = 8[/tex]
Two solutions .
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Except from the option(c), all equations have 2 solutions.
What is an equation?"An equation is a formula that expresses the equality of two expressions, by connecting them with the equal sign"
Given equations are:
a. x² = 16
This is a quadratic equation. This equation has two solutions.
b. 4x² = 0
This is a quadratic equation. This equation has two solutions.
c. x² = - 16
This equation doesn't have any solution.
d. 3x + 2 = 14
This is a quadratic equation. This equation has two solutions.
e. x² - 1 = 24
This is a quadratic equation. This equation has two solutions.
f. (x + 8)(x - 8) = 0
This is a quadratic equation. This equation has two solutions.
Learn more about equations here: https://brainly.com/question/14584746
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Help Plzzz!
Convert 122lbs to Kilograms and plz show how you got the answer!!!!!!
Answer:
55.83
Step-by-step explanation:
Divide the number of pounds by 2.2046 to use the standard equation.
Answer:
55.34 kg
Step-by-step explanation:
1 kg = 2.204 lbs
then
[tex]122 lbs\times \frac{1 \: kg}{2.204 \: lbs} [/tex]
because lbs from the numerator will goes with lbs in the denominator the only unit remains is kg
so
122 ÷ 2.204 kg = 55.34 kg
What is the image of (-4,9) after a dialation by a scale factor of 3 centered at the origin
Answer:
-12,27
Step-by-step explanation:
if the sum interior anhles of a regregrar polygon is equl to 720
find the number of side
Answer:
The sum of interior angles of a regular polygon is 720 degree 720 720 Degree find the measure of each interior angle of the polygon
Since each angle is equal, 720 is split into 6 equal parts. So, 720/6 = 120 degrees is the measure of each interior angle.
Step-by-step explanation:
What is the mean?
3 0 4 7 0 4 5 3 6 8
Step-by-step explanation:
3+0+4+7+0+4+5+3+6+8/10
40/10
4
Answer:
The mean is 4.
Step-by-step explanation:
When you add 3+0+4+7+0+4+5+3+6+8 you get 40 and because there are 10 numbers you would divide 40 by 10 and get 4.
Mean-the average of all of the numbers in a data set...to find the mean you simply add all of the given numbers together and then divide that sum by the total amount of numbers given, then you will get your mean.
HOPE THIS HELPS!!!!!!!
Zoe bought 11 chicken wings for $20.90. What's the unit cost of one wing?
Answer:
$1.90
Step-by-step explanation:
Every Wednesday, Wayne works out for
3
4
of an hour at the fitness center. Every Saturday, he goes to the fitness center again and exercises for 3 times as long. How much time does Wayne spend at the fitness center in all each week?
I would say three hours?
how many times did the decimal point move if 1.56 went to 1560
Answer:
For 1.56 to get to 1560 the decimal point moved three times.
Step-by-step explanation:
To explain this I will give a visual representation.
We have to get from 1.56 to 1,560 and find out how many times it moved forwards.
0). 1.560
1). 15.60
2). 156.0
3). 1,560
as you can see it moved three times.
Please help me look at the photo
Answer:
I think the answers are E = 4 ¼ F = -6 ¼ D = -3 ¼
How do you answer this?
Answer:
x= -3/2Step-by-step explanation:
((4)²)^x = 1/(4)³
4²^x = 4³
thus the powers are same then
2x =-3
x=-3/2Answer:
x = - [tex]\frac{3}{2}[/tex]
Step-by-step explanation:
Using the rules of exponents
[tex](a^m)^{n}[/tex] = [tex]a^{mn}[/tex]
[tex]a^{-m}[/tex] ⇔ [tex]\frac{1}{a^m}[/tex]
Note that 16 = 4² and 64 = 4³ , then
[tex]16^{x}[/tex] = [tex]\frac{1}{64}[/tex] , can be expressed as
[tex](4^2)^{x}[/tex] = [tex]\frac{1}{4^3}[/tex] , that is
[tex]4^{2x}[/tex] = [tex]4^{-3}[/tex]
Since the bases on both sides are equal, then equate the exponents
2x = - 3 ( divide both sides by 2 )
x = - [tex]\frac{3}{2}[/tex]
A single die is rolled twice. Find the probability of rolling an odd
number the first time and a number greater than 4 the second time.
Step-by-step explanation and answer:
The 6 sides of the die are numbered 1,2,3,4,5,6
There are 3 odd and 3 even numbers
probability of an odd number on 1st roll is:
3/6=1/2
When you want A AND B probabilities, you multiply
the events A and B
The number less than 3 are 1,2, so the probability is:
2/6=1/3
so the probability of both events are going to be:
(1/2) *(1/3)=1/6
John had a rock that weighed 128 kg. The scale he used to weigh the rock has a percent error of 2%. Which could be measured weights of the rock?
Answer:
a
Step-by-step explanation:
What is the y-intercept of the line?
Answer:
(0 ; 1)
Step-by-step explanation:
Have a great day
Answer:
The y-intercept of this line is 1.
Step-by-step explanation:
You can tell by looking at the y-axis (vertical line.)
I WILL GIVE BRAINLIEST FOR CORRECT ANSWER!!
Answer:
2 1/2 divided by 5/2 is 1.
6 3/4 divided by 2 1/4 is 3
3 divided by 2/3 is 9/2.
1/3 divided by 3 is 1/9.
Step-by-step explanation:
hope I helped
Answer:
i don't have an answer but im here so the guy above me can get brainliset
Step-by-step explanation:
x to the third power = 1 over 8
Answer:
1/2
Step-by-step explanation:
x^3=1/8.
We know 2^3(2*2*2)=8. So 1/2*1/2*1/2=1/8.
Aaron, Darren, Karen, Maren, and Sharon rode on a small train that has five cars that seat one person each. Maren sat in the last car. Aaron sat directly behind Sharon. Darren sat in one of the cars in front of Aaron. At least one person sat between Karen and Darren. Who sat in the middle car?
Answer:
Sharon
Step-by-step explanation:
The given parameters are;
The number of persons that rode on the small train = 5
The number of cars in the train = 5
The position Maren sat = Last car
The position Aaron sat = Directly behind Sharon
The position Darren sat = In one of the cars in front of Aaron
The position of one of the members = Between Karen and Darren
The given seating arrangement is as follows;
Maren → Aaron → Sharon → Darren → Karen
Therefore, the person who sat in the middle car is Sharon.
1/8 divided by ? = 1/40
fill in the question mark
Answer:
5
Step-by-step explanation:
1/8 divided by 5 equals 1/40
Answer:
[tex]\frac{\frac{1}{8}}{5}=\frac{1}{40}[/tex]
Step-by-step explanation:
Let 'x' be the number to which 1/8 had to be divided to get 1/40
so the equation becomes
[tex]\frac{1}{8}\div \:x=\frac{1}{40}[/tex]
[tex]\frac{\frac{1}{8}}{x}=\frac{1}{40}[/tex]
[tex]\frac{1}{8x}=\frac{1}{40}[/tex]
[tex]\mathrm{Apply\:fraction\:cross\:multiply:\:if\:}\frac{a}{b}=\frac{c}{d}\mathrm{\:then\:}a\cdot \:d=b\cdot \:c[/tex]
[tex]1\cdot \:40=8x\cdot \:1[/tex]
[tex]40=8x[/tex]
switch sides
[tex]8x=40[/tex]
Divide both sides by 8
[tex]\frac{8x}{8}=\frac{40}{8}[/tex]
[tex]x=5[/tex]
x=5 is the number.
Therefore,
1/8 divided by 5 = 1/40
i.e.
[tex]\frac{\frac{1}{8}}{5}=\frac{1}{40}[/tex]
SOLUTION CHECK
[tex]\frac{\frac{1}{8}}{5}[/tex]
[tex]\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{\frac{a}{b}}{c}=\frac{a}{b\cdot \:c}[/tex]
[tex]=\frac{1}{8\cdot \:5}[/tex] ∵ [tex]\frac{\frac{1}{8}}{5}=\frac{1}{8\cdot \:5}[/tex]
[tex]=\frac{1}{40}[/tex]
Which statement correctly compares the function shown on this graph with the function y = -x+ 4?
A. The function shown on the graph has the same rate of change, but a lower starting point.
B. The function shown on the graph has a smaller rate of change, but the same starting point.
C. The function shown on the graph has a greater rate of change, but the same starting point.
D. The function shown on the graph has the same rate of change, but a higher starting point
Answer:
I think the answer for this question is C
Answer:
the answer is c
Step-by-step explanation:
please answer this question.i would really apreciate it
Hello, I’m struggling, please help :)
Answer:
1. Vanilla
2.Strawberry
3.Chocolate
4.CS
5.VV
6.SS
Step-by-step explanation:
For these problem you are solving to find ALL of the possible outcomes with the 3 flavours.
1. They already have a combination for Chocolate-chocolate and Chocolate-Strawberry. The only flavour you haven't used yet is vanilla which makes your first answer vanilla.
2. They already have a combination for Vanilla-Chocolate and Vanilla-Vanilla. The only flavour you haven't used yet is Strawberry which makes your answer strawberry.
3. They already have a combination for Strawberry-Vanilla and Strawberry-Strawberry. The only flavour you haven't used yet is chocolate which makes your answer chocolate.
So when looking at the letters they are honestly just initials to the combinations possible. The order of the letters depend on what words come first going down your branch.
4. The two words are chocolate and strawberry. The first letter in both words are C and S so the answer is CS.
5. The two words are vanilla and vanilla. The first letter in both words are V and V so the answer is VV.
6. The two words are strawberry and strawberry. The first letter in both words are S and S so the answer is SS.
Donald bought a box of golf balls for $9.32. There were 18 golf balls in the box.
About how much did each golf ball cost? Rename the decimal dividend as a whole number that is
compatible with the divisor to estimate the quotient.
Each golf ball costs about $
Answer:
$0.51
Step-by-step explanation:
each golf ball would cost $0.51
Algebra 1 TestNav answers
Charly has a square carpet with the dimensions 10 by 97 inches what is the area?
Answer:
A = 970 inches²
Step-by-step explanation:
If Charly has a 'square' carpet of 10 by 97, then its not square but rectangular, with that in mind;
A = L x W
A = 10 x 97
A = 970 inches²
Hope this helps :)
Answer:
970 inches
Step-by-step explanation:
10x97=970
Length x Width = Area
5% of students brought their lunch. 42 students brought their lunch. How many students in total are in Ridgewood Junior High School?
Answer:
840
Step-by-step explanation:
5%X20=100%
42X20=840
ABC = DEF. Find the measure of the given angles.
A=×+19
D=2x
x =
3 kg of carrots cost 1.35 5kg of carrots and 2kg of potatoes cost a total of 4.15 find the cost of 1 kg of potatoes
Answer:
2.075 (scale to whatever your teacher wants)
Step-by-step explanation:
ratio of potatoes vs potato cost is 2:4.15
divide everything by two to find the cost of 1 potato
4.15/2=2.075
if you are dealing with money then your answer should either be 2.07 or 2.08
−2x+5y=−17 3x-10y=283x−10y=28
Answer:
x = 6
y = -1
Step-by-step explanation:
-2x + 5y = -17 ------ equation 1
3x- 10y = 28 ------- equation 2
equation 1× 2
-4x + 10y = -34 ------- equation 3
equation 2 + equation 3
-x = -6
x = 6
x = 6 substitute for equation 1
-12 + 5y = -17
5y = -5
y = -1
the distributive property of 27+60 ??
Answer:
Step-by-step explanation:
27+60= 87
What is the value of x2 + (2y) ÷ (2w) + 3z for w = 2, x = 5, y = 8, and z = 3?
Write the equation y = 4x - 20 in Standard Form (AX + By = C) with integer coefficients
HELPPPP ASAPPP
Answer:
-4x + y = -20
Step-by-step explanation: