Answer:
75
Step-by-step explanation:
The values in a dataset are 3.5, 2.5, 2.5, 3.5, and 3.0. If Xbar (sample mean) = sigma X / n, what is the mean for the sample?
Answer:
[tex]\bar x = 3.0[/tex]
Step-by-step explanation:
Given
[tex]x: 3.5, 2.5, 2.5, 3.5, 3.0[/tex]
Required
The sample mean
This is calculated using:
[tex]\bar x = \frac{\sum x}{n}[/tex]
So, we have:
[tex]\bar x = \frac{3.5+ 2.5+ 2.5+ 3.5+ 3.0}{5}[/tex]
[tex]\bar x = \frac{15.0}{5}[/tex]
[tex]\bar x = 3.0[/tex]
Si Doña Clara lleva un tratamiento con 2 medicamentos una toma cada 8 horas y la otra toma cada 12 horas, ¿Despues de la primera toma, a las cuantas horas volverá a tomar los dos medicamentos?
Respuesta:
24 horas
Explicación paso a paso:
El primer medicamento se toma cada 8 horas.
El segundo medicamento se toma cada 12 horas.
Para Obtian el momento en que ambos medicamentos se volverán a tomar juntos:
Encontramos el mínimo común múltiplo de 8 y 12
Múltiplos de:
8 = 8, 16, 24, 32, 40, 48, 56
12 = 12, 24, 36, 48, 60
El mínimo común múltiplo de 8 y 12 es 24.
Por lo tanto, ambos medicamentos se volverán a tomar después de 24 horas.
What is the common ratio of the following sequence?
-1, 6, - 36, 216 . . .
r = -6
r = 1296
r = -1
r = 7
Answer:
r = -6
Step-by-step explanation:
-1 × -6 = 6
6 × -6 = -36
-36 × -6 = 216
Answer:
-6
Step-by-step explanation:
To find the common ratio, take the second term and divide by the first term
6/ -1 = -6
Check the third term and divide by the second term
-36/-6 = -6
And the 4th divided by the third
216/ -36 = -6
The common ratio is -6
CAN SOMEONE HELP ME ASAP ITS SO IMPORTANT
Answer:
The letter P represents 1/8 on the number line
Step-by-step explanation:
Can You Help Me I really don't understand
Its A, because a filled in circles means equal to and the arrow is going to the negatives because its less than 15.
What is the measure of angle 1?
Answer:
C
Step-by-step explanation:
Let find the measure of the angle supplementary to Angle 1.
[tex] \frac{123 + 84}{2} = 103.5[/tex]
Angle 1 is supplementary to that angle so
[tex]103.5 + x = 180[/tex]
[tex]x = 76.5[/tex]
What if you fail all of your exams what will happen?
Answer:
well then you fail and thats that
Step-by-step explanation:
so i know g(x)=3k-2x² and g(-3)=-6
how do i know what g(x) ad k are?
Answer:
find k by putting -3 where there is x than -6 on g(x)
Step-by-step explanation:
g(x)=3k-2x²
-6=3k-2(-3)²
-6=3k-18
-6+18=3k
12=3k
12÷3=3k÷3
4=k
A university department administers a survey, regarding student satisfaction.
Based on the survey results, the department provides a confidence interval
estimate of 60% to 80% for student satisfaction. If the department wishes to
construct a confidence interval that more accurately represents the
proportion of student satisfaction, how should the design be altered?
Select all that apply.
A. Use a smaller confidence level.
B. Use a larger sample size.
C. Use a larger confidence level.
D. Use a smaller sample size.
Answer:
B. use a larger sample size
Step-by-step explanation:
the bigger the sample size, the more accurate the results are in stats.
Find a sum by suitable rearrangement: 143 ÷ (-567)+ 257 + 167
Need help fast best answer gets brainliest
Answer:
A) 1x 9^6
B) 1 x (2/3)^4
C) 1 x 4.5^6
hope that helps!
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Answer:
A. [tex]9^{6}[/tex]
B. [tex](\frac{2}{3} )^{4}[/tex]
C. [tex]4.5^{6}[/tex]
Step-by-step explanation:
- the 1 in the front dosn't matter since 1 times "number" is going to be that number
A. There are six 9's multiplying by each eachother
B. There are four (2/3)'s multiplying by each eachother
C. There are six 4.5's multiplying by each eachother
john has 15 t shirts. 6 black, 3 red, 2 purple, 2 dark blue, 1 light blue, 1 purple
PLEASE QUICKLY ANSWER
Answer:
Y= (4, -5)
Step-by-step explanation:
________________
Z corresponds to D
W corresponds to A and
X correspondents to B
rotate it in your mind
from D to C gives you a good clue where to place Y.
4,-5 is correct
An expression is shown below:
3(m + 5 + 9m)
Write two expressions that are equivalent to the given expression.
Answer:
3(10m +5)
30m +15
Step-by-step explanation:
3(m + 5 + 9m)
Combine like terms inside the parentheses
3(10m +5)
Distribute the 3
30m +15
Describe the leading coefficient,
a
for the quadratic function shown in the graph below.
12
x
The leading coefficient of the quadratic function a is negative
How to describe the leading coefficient?From the graph, we have the following points:
Vertex, (h,k) = (-4,3)
Point, (x,y) = (-3,2)
A quadratic equation is represented as:
y = a(x - h)^2 + k
So, we have:
2 = a(-3 + 4) + 3
Subtract 3 from both sides
-1 = a(-3 + 4)
Evaluate the difference
-1 = a
This gives
a = -1
Hence, the leading coefficient a is negative
Read more about leading coefficient at:
https://brainly.com/question/19624646
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*Chuckles* my GPA is in danger
Answer:
A
Step-by-step explanation:
Exponential growth is when numbers increase rapidly in an exponential fashion so for every x-value on a graph there is a larger y-value. Decay is when numbers decrease rapidly in an exponential fashion so for every x-value on a graph there is a smaller y-value. So here the one that fits the description is A.
if x = 1 and y = 1
Then the value of x-y + xy is
Answer:
xy together mean x times y which equals 1
x-y = 0
the the sum is 1
Step-by-step explanation:
1-1 + 1(1)
= 1
A tree in Lashonda's backyard is 1 meters tall. It has been growing for 3 years. 4. What is the unit rate in meters per year?
Step-by-step explanation:
the answer is in the above image
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Answer:
I can't see it clearly, it's blurry, but the answer should be where the parabola touches the line. From what I can see, I can tell you that one solution is in the 3rd quadrant and the other solution is in the 4th quadrant.
Step-by-step explanation:
Hope this helps
Drag each tile to the correct box.
Arrange the functions in decreasing order of their periods.
y=-3cos(3+2)
y=icot(4) +6
y =
y=5csc(3x)+6
y=-10sin(–26)
+
Answer:
hope this could help u
Step-by-step explanation:
The functions in decreasing order of their periods are given below:
What is Trigonometry?The branch of mathematics concerned with specific functions of angles and their application to calculations.
The first one will be:
1. y= -10 sin (x/5-2π)
then,
2. y= 5 csc (3x)+6
then,
3. y=-3cos(x+2π)
then,
4. y= 2/3 cot [(x/4) +6]
then,
5. y= -1/2 tan (5x/6 + π)
Hence, all above are arranged in order of their decreasing periodic function.
Learn more about trigonometry here:
https://brainly.com/question/14746686
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The sum of 3 numbers is 108. The first number is 8 less than the second. The third number is 3 times the first. What are the numbers?
Step-by-step explanation:
hope you can understand it properly
HELP PLZZ How many and what type of solutions does 6x^2−3x+5 have?
1 rational solution
2 rational solutions
2 irrational solutions
2 nonreal solutions
which expression is equivalent to 4 start root 81/16 a^8 b^16 c^16?
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SLSLS
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Answer:
5900 milliliters
Step-by-step explanation:
U just multiply?
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Answer:
1/6
Step-by-step explanation:
6^-2 / 6^-1
We know that a^b / a^c = a^(b-c)
6^(-2 - -1) = 6^(-2+1) = 6^-1
We know that a^-b = 1/a^b
1 /6^1 = 1/6
Answer:
1/6
Step-by-step explanation:
When dividing by exponents, you need to subtract the exponent from top to bottom. Ex: 5^3/5^2=5^1 which is just one, because you subtract 3 and two. In this case, 6^-2 / 6^-1 gets us 6^-1 which is the same thing as 1/6^1. Because remember, a^-x = 1/a^x.
Hope this helps!
:)
Need help pls ASAP I really need help pls
Help me ASAP !!!! Pls
Answer:
The answer is D because when you plug in 0 for the x value, you get positive 2
Según la gráfica cuadrática de la expresión y= x² + 1 ¿Cuales serían las coordenadas cuando x es igual a -2,-1 y 0?
Answer:
When x = -2 P ( -2 ; 5)
When x = -1 Q ( -1 ; 2)
When x = 0 R ( 0 ; 1)
Step-by-step explanation:
y = x² + 1
When x = -2
y = ( -2)² + 1 y = 5 point P ( -2 ; 5)
When x = - 1
y = ( -1)² + 1 y = 2 point Q ( -1 ; 2 )
When x = 0
y = (0)² + 1 y = 1 point R ( 0 ; 1 )
Write and solve an equation to answer the question.
85% of what number w is 10.2?
Answer:
.85w = 10.2
w =12
Step-by-step explanation:
Of means multiply and is means equals
85% * w = 10.2
Change to decimal form
.85w = 10.2
Divide by .85
.85w/.85 = 10.2/.85
w =12
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Step-by-step explanation:
a)
[tex](3x-4y+2z)^2\\=9x^2+16y^2+4z^2+2.3.(-4)xy+2.3.2xz+2.(-4).2yz\\=9x^2+16y^2+4z^2-24xy+12xz-16yz[/tex]
b)
[tex](4a+1)^3\\= 64a^3+3.(4a)^2.1+3.4a.1^2+1\\=64a^3+48a^2+12a+1\\[/tex]