Answer:
[tex]-x^{2} +2x-3[/tex]
Answer :
-2x^2 + 2x - 3
A company is testing a new protein shake which they claim works better than their existing brand in improving an athlete's performance. The company selected 60 athletes from a training camp database, and divided them into three groups. The ages for the groups were 16 to 20 years, 21 to 25 years, and 26 to 30 years. In each group, half of the subjects were asked to use the new protein shake for a month, and the other half were asked to use the company's existing brand for a month. The subjects were not informed about which protein shake they would be using. Which statements about this study are true? The study uses blocking to reduce variability from known factors. The study does not use a control group. The study uses random sampling. The study uses blocking on the basis of gender. The study uses a repeated measure design to reduce variability from unknown factors.
Answer:
The study uses random sampling
The study uses blocking to reduce variability from known factors
Step-by-step explanation:
Correct on Plato/Edmentum
Study uses blocking to reduce variability from know factor
and The study uses random sampling are the true statements
What is random sampling?Random sampling is a part of the sampling technique in which each sample has an equal probability of being chosen
Here study uses blocking to reduce variability from know factor
The study uses random sampling
Hence, study uses blocking to reduce variability from know factor
and The study uses random sampling are the true statements
Learn more about Random sampling here
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5x5x5x5x5x5x5x5x10x10x00.0001
3906.25
Use a calculator
What is the distance between (-2,-8)(7,-3)
Answer:
[tex]\sqrt{106}[/tex] or 10.29563
Step-by-step explanation:
Use the distance formula to determine the distance between the two points.
[tex]d = \sqrt{(x_{2} -x_{1})^{2} + (y_{2} - x_{1})^{2} }[/tex]
d = distance
[tex](x_{1}, y_{1})[/tex] = coordinates of the first point
[tex](x_{2}, y_{2})[/tex] = coordinates of the second point
Answer:
[tex]\displaystyle d = \sqrt{106}[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Coordinates (x, y)Algebra II
Distance Formula: [tex]\displaystyle d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]Step-by-step explanation:
Step 1: Define
Identify
Point (-2, -8)
Point (7, -3)
Step 2: Find distance d
Simply plug in the 2 coordinates into the distance formula to find distance d
Substitute in points [Distance Formula]: [tex]\displaystyle d = \sqrt{(7--2)^2+(-3--8)^2}[/tex][√Radical] (Parenthesis) Subtract: [tex]\displaystyle d = \sqrt{(9)^2+(5)^2}[/tex][√Radical] Evaluate exponents: [tex]\displaystyle d = \sqrt{81+25}[/tex][√Radical] Add: [tex]\displaystyle d = \sqrt{106}[/tex]A manufacturer compares its income f(x) to its expenses g(x) for x number of units sold. What does the solution to f(x) = g(x) represent for the manufacturer?
Answer: The number of units sold when the manufactures home income equals the manufactures expenses
Step-by-step explanation:
The solution to f(x) = g(x) represent that manufacturer is on break even.
What is Break-even?Break-even analysis Break even is the point where the income of a business matches the expenses required to run that business. Also in other words it tell us the point at which you will have enough sales to cover all of the costs involved.
What function represent here?Here as it is given that the income f(x) to its expenses g(x) for x number of units sold is equal.
Therefore, its state will be break even.
Learn more about the break even here: https://brainly.com/question/21137380
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Can someone help I don’t understand
Answer:
8 hr
Step-by-step explanation:
8hr
hope this helps you!
HELP
Frank is making lemonade. He uses 12 lemons he brought from home and 10 lemons he asked Heidi to bring. He bought 5 bags
of lemons from the grocery store. Each bag holds the same number of lemons and he uses all of these. He uses 72 lemons
altogether. Which equation models the number of lemons, there are in each bag?
A 12 + 10 + 5 = 72.c
B 12x + 10x + 5 = 72x
C 12 + 10 + 5x = 72
D 12x + 10x + 5x = 72
A cake weighs 215 g and is shared equally between five people. What weight of cake does each person receive?
Answer: 43 g
Step-by-step explanation: For 215 to be divided equally between five people the equation should be set up as 215/5, which equals 43 g for each person.
1a.) Brian borrowed 4 non-fiction books from the library. This was 25% of the
books he checked out. How many books did Brian check out? *
Answer:
Total number of books borrowed= 16
Step-by-step explanation:
Giving the following information:
Number of non-fictions books= 4
Percentage of books borrowed= 25% = 0.25
To calculate the total number of books borrowed, we need to use the following formula:
Total number of books borrowed= 4 / 0.25
Total number of books borrowed= 16
f(x) = x2 What is g(x)?
um
g(x)
(2.1)
OB. 9x)-
O A.9)
960-G3*
O c. g(x) = 4x²
O D. 9(x) = /
Step-by-step explanation:
the corect answer for this question is
A)
[tex]when \: \: x = 2 \\ y = \frac{1}{4} {2}^{2} \\ y = 1[/tex]
Im really struggling with this, i need A on this test please help me!
Question 4 options:
The volume of the square pyramid is ___ cubic centimeters.
The volume of the square pyramid is 600cm^3
Write an explicit function in terms of n that describes the following sequence:
−2, 4, −8, 16, −32, 64
Answer:
aₙ = -2(2)^(n-1)
Step-by-step explanation:
What is the value?
I’m confused lolz {}:
Answer:
14
Step-by-step explanation:
1/9(3)^4+5
1/9*81+5
9+5
14 is your answer
Melissa built a square pyramid out of sand. The base of the pyramid has a side length of 18 centimeters. The height of the pyramid is 26
centimeters.
What is the volume of the pyramid?
A. 624 cm3
B. 1,872 cm
C. 2, 808 cm
D. 4,212 cm
E. 8, 424 cm
Answer:
C. 2, 808 cm^3
Step-by-step explanation:
Given that
The base of the pyramid is 18 centimeters
And, the height of the pyramid is 26 centimeters
We need to find out the volume of the pyramid
As we know that
The volume of the pyramid is
= 1 ÷ 3 × base^2 × height
= 1 ÷3 × 18^2 × 26
= 2,808 centimeter^3
Hence, the correct option is c.
Solve this system of equations by using the elimination method. 2x - 2y = 2. 5x + 2y = 12 (2, [?])
Answer:
(2,12)
Step-by-step explanation:
mathpapa
Answer:
(2,1)
Step-by-step explanation:
How big is a piece of A4 paper?
Answer:
210 x 297 mm
Hope that this helps!
HELP PLEASE!! a space station orbits earth at a rate of 57 miles every 3 seconds
Write the space stations rate of change
Answer:
i think its every 90 minutes but I could be wrong.
Step-by-step explanation:
Help ASAP on a timer ⏱
Answer:
B: 395
Step-by-step explanation:
Answer:400
Step-by-step explanation:
PLS ILL MARK BRAINLIEST (100 points)
Answer:
For part A:
9x² - 36x + 36 = 0
9(x² - 4x + 4) = 0
9(x-2)(x-2) = 0
Radicand = Discriminant = 36² - 4(9)(36) = 0
there is 1 real zero that repeats itself)
zero is x=2.
Use factoring. Factors of 7 are 1 and 7
2x²-9x+7 = 0
(2x-7)(x-1) = 0
2x-7 = 0 (x-1)=0
2x = 7x=1
x = 7/2
Your solutions are x = 1 and x = 7/2
Step-by-step explanation:
Find the value of each variable 17/ 18
Answer:
A) B.R(-9)?
Step-by-step explanation:
Answer:
17 - 42
18 - 50
Step-by-step explanation:
17)
You know the total measurement of both angles is 180.
So your formula is (2x+54) + x = 180. Now rearrange to get
180 - (2x+54) = x or 180-2x+54 =x
Simply to -2x+126 = x followed by moving x and moving 126 to get
-3x = -126 , now divide both sides by -3
18)
Your complete circle is 360 and you know one angle is 90.
Set your formula to 360=90+(3x)+(x-20)+(2x-10)
Rewrite to 360 = 90+3x+x-20+2x-10 and combine like terms
360 = 90 - 20 - 10 + 3x + x+2x
360 = 60 + 6x
360 - 60 = 6x
300 = 6x
300/6 = x
50 = x
Please help I'm doing homework and its due at 1:00!
A video game rental store charges a $20 membership fee plus $2 for each game rented. Click to show whether each statement is true or false. True False The slope of function 2 is greater than the slope of function 1 and less than the slope of function 3 The slope of function 1 is 4 times the slope of function 3. The y-intercept of function 2 is less than the y-intercept of functions 1 and 3. The y-intercept of function 2 is greater than the y-intercept of function 3.
Answer:
the member ship gay
Step-by-step explanation:
m8 m88m8m88m8m88m
5.
A balloon is released from the top of a building. The graph shows the height of the balloon over time. What does the slope and y-intercept reveal about the situation?
A. The balloon starts at a height of 0 ft and rises at a rate of 10 ft.
B. The balloon starts at a height of 10 ft and rises at a rate of 0 ft.
C. The balloon starts at a height of 0 ft and rises at a rate of 100 ft.
Answer:
Step-by-step explanation:
the balloon starts at a height of 0 ft and rises at a rate of 100 ft.
please help. solve for x. (i’ll give brainles if you help with all!
Answer:
Step-by-step explanation:
If I give you this helpful way to remember , can you solve these?
Use SOH CAH TOA to recall how the trig functions fit on a triangle
SOH: Sin(Ф)= Opp / Hyp
CAH: Cos(Ф)= Adj / Hyp
TOA: Tan(Ф) = Opp / Adj
or no?
please help will mark brainliest
What is -3x-y=-24 if Y =3x
Answer:
x= 4 and y= 12
Step-by-step explanation:
solve by substitution
hope this helps :D
I just need help in this last question plsssss
Answer:
B) 0.8
Step-by-step explanation:
If events are said to be independent, then just multiply the probability of the first event by the second if they are supposed to be happening together.
P (A) * P (B) = 0.8 x 1 = 0.8
HElP NEED ANSWER FAST WILL GIVE BRAIN
Answer:
c
Step-by-step explanation:
The temperature at dawn is 9 degrees Celsius away from 0. Select ALL the temperatures that are possible.
Answer:
- 9 °C or 9 °C
The number line shows that - 9 and 9 and both 9 away from 0.
question 9
9. Given ABCD
EFGH, find the length of GH.
A. 8
B. 7
C. 5
D. 10
With Company A, you can take a 2.25 hour helicopter ride for $ 270.
With Company B, you can take a 90-minute helicopter ride for $ 180.
Which of the two helicopter companies gives you the best ride for your money?
Answer:
B
Step-by-step explanation: