Answer:
A sample size of 128 is needed.
Step-by-step explanation:
We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:
[tex]\alpha = \frac{1-0.93}{2} = 0.035[/tex]
Now, we have to find z in the Ztable as such z has a pvalue of [tex]1-\alpha[/tex].
So it is z with a pvalue of [tex]1-0.035 = 0.965[/tex], so [tex]z = 1.81[/tex]
Now, find the margin of error M as such
[tex]M = z*\frac{\sigma}{\sqrt{n}}[/tex]
In which [tex]\sigma[/tex] is the standard deviation of the population(square root of the variance) and n is the size of the sample.
How large should a sample be if the margin of error is 1 minute for a 93% confidence interval
We need a sample size of n, which is found when [tex]M = 1[/tex]. We have that [tex]\sigma = \sqrt{39}[/tex]. So
[tex]M = z*\frac{\sigma}{\sqrt{n}}[/tex]
[tex]1 = 1.81*\frac{\sqrt{39}}{\sqrt{n}}[/tex]
[tex]\sqrt{n} = 1.81\sqrt{39}[/tex]
[tex](\sqrt{n})^2 = (1.81\sqrt{39})^2[/tex]
[tex]n = 127.8[/tex]
Rounding up
A sample size of 128 is needed.
−39 = −0.6k
what does k equal
Answer: k=65
Step-by-step explanation:
Answer:
k=65
Step-by-step explanation:
You would need to divide -0.6 on both sides to isolate k
-39 = -0.6k Original equation
-39÷ -0.6 = -0.6k÷-0.6 Isolating the variable
-39÷-0.6 = k SImplification
65 = k The answer!!!
When multiplying or dividing 2 negative numbers, remember that the result will be positive
I hope this helps!!!
Anyone can help me with this??
Answer:
Its 10
Step-by-step explanation:
20/15= 4/3
Answer:
2 is the answer x=5 then you can simply solve
Question attached. Will mark brainliest.
Answer:
So, the vertical asymptotes are x=+2
Step-by-step explanation:
correct me if im wrong
Question attached. Will mark brainliest.
Answer:x + 2
#CARRYONLEARNING #STUDYWELLRemy bought a bottle of water with a volume of 0.56 L. After Remy drank some of the water there was 0.17 L left. How much water did Remy drink?
Answer:
0.73 L
Step-by-step explanation:
(7i²– 5i + 12) – (3i²+ 6i– 9)
THIS IS URGENT PLEASE
the dots are in the middle not on the bottom
4) What is the correct exponential form for the expression below? *
4.4.4
Answer:
option 3: 4^3
Step-by-step explanation:
four is being multiplied 3 times
Answer:
4^3 (option 3)
Step-by-step explanation:
4 x 4 x 4
4 is the number that is being multiplied
3 is the amount of times it is being multiplied
4^3
Can someone help me on this orders pairs
Answer:
C
Step-by-step explanation:
The x's cannot have multiple outputs (y's) but again, the y's can. C is the only answer that doesnt use a repeated input (x) like 1. All the ordered pairs in answer C, has different inputs but the same output, which is still a function.
Find the length of side a.
O A. 2
O B. 3
O c. 9
OD. 134
SUBMIT
Answer:
Answer B is correct.
Step-by-step explanation:
a² + b² = c² |-b²
a² = c² - b²
a² = 5² - 4²
a² = 25 - 16
a² = 9
a = 3
A recipe for 10 servings of raspberry sorbet calls for 2 cups of water, 1ż cups of granulated sugar, and 4 cups of
frozen raspberries, thawed. How many gallons of water would the recipe call for if a school made 320 servings for
students to eat at lunch?
O 4 gallons
O 8 gallons
O 40 gallons
O 80 gallons
its 4 gallons.
Answer:
[tex]\huge\boxed{\sf 320\ servings = 4\ gallons}[/tex]
Step-by-step explanation:
1 gallon = 16 cups (STANDARD)
For 10 servings:
10 servings = 2 cups of water
10 servings = 2 / 16 gallons
10 servings = 0.125 gallons
For 320 servings:
10 servings = 0.125 gallons
Multiply both sides by 32
10 * 32 servings = 0.125 * 32 gallons
320 servings = 4 gallons
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807Answer: The answer is 4 gallons.
Step-by-step explanation: A recipe for 10 servings of raspberry sorbet calls for 2 cups of water, 1/1.2 cups of granulated sugar, and 4 cups of frozen raspberries. So the Answer is 4 gallons
Sorry but someone got ride of it so i hade to add it again please mark brainliest :)
Te retamos a resolver en tu cuaderno los siguientes ejercicios y preguntas.
1.Nuestro país tiene el número más grande de especies por unidad de área
en el planeta. La fauna es muy variada especialmente en las selvas
amazónicas, donde hay gran cantidad de especies únicas en el mundo.
Cuenta con más de 1 800 especiesdeaves.Escribealmenos6especies
de animales que hay en nuestro país.
2.El oso perezoso tarda aproximadamente 0,5 minutos enmoverunaextremidad
yrecorre0,25metrospor minuto. Es bastante miope, oye poco y su olfato
apenas le sirve para diferenciar las plantas de las que se alimenta. ¿Qué
distancia alcanza a recorrer el oso perezoso durante 5 minutos? Averigua el
peso aproximado de un oso perezoso.
3.Una familia ha consumido en un día de verano dos botellasdelitroymediode
agua,4botellas de1/3de litro de jugo, 5 limonadas de ¼ de litro. ¿Cuántos
litrosdelíquidohabebido?Expresaelresultadocon un númeromixto.
4.Resulta sorprendente conocer la cantidad de tiempo que necesitan
dormir algunos animales durante el día. Con los siguientes datos de la tabla
respondelas siguientes preguntas.ANIMAL PARTE DEL DÍA (24 horas )
QUE DEDICAN DORMIR.
Oso perezoso 0,8
Oveja 0,125
Gorila 0,5
Gato 0,625
armadillo 0,75
Responde argumentando tu respuesta, anota en tu cuaderno:
¿Cuánto tiempo en horas y minutos duerme el oso perezoso en un
día?
¿Podemos afirmar que los animales más pequeños necesitan
menos tiempo de descanso?ANIMAL PARTE DEL DÍA (24 horas )
QUE DEDICAN DORMIR.
Oso perezoso 0,8
Oveja 0,125
Gorila 0,5
Gato 0,625
armadillo 0,75
Responde argumentando tu respuesta, anota en tu cuaderno:
¿Cuánto tiempo en horas y minutos duerme el oso perezoso en un
día?
¿Podemos afirmar que los animales más pequeños necesitan
menos tiempo de descanso?
Answer1
Step-by-step explanation:
Michelle needs to rent storage space for some of her belongings. She paid a one-
time original storage fee of $50.00, and now pays $15.00 each month (m). Which
answer choice shows an expression that represents the total amount Michelle has
paid after a certain number of months (m)?
a 35m
b 65m
c 15m + 50
d 50m + 15
Answer:
c
Step-by-step explanation:
she pays a one-time fee of 50, and 15$ per month
what is the slope? (IXL)
Answer:
2/4 but simplified 1/2
Step-by-step explanation:
rise over run.
simplify the following expression 5-⁵/2 x 5⁹/2
Given:
Consider the given expression is
[tex]5^{-\frac{5}{2}}\times 5^{\frac{9}{2}}[/tex]
To find:
The simplified form of the given expression.
Solution:
We have,
[tex]5^{-\frac{5}{2}}\times 5^{\frac{9}{2}}[/tex]
Using properties of exponents, we get
[tex]=5^{-\frac{5}{2}+\frac{9}{2}}[/tex] [tex][\because a^ma^n=a^{m+n}][/tex]
[tex]=5^{\frac{-5+9}{2}}[/tex]
[tex]=5^{\frac{4}{2}}[/tex]
[tex]=5^{2}[/tex]
[tex]=25[/tex]
Therefore, the simplified form of given expression is 25.
The price of televisions has been decreasing. Last year, the price of a 52-inch television was $800. This year, the price has declined by 15%. How much was the price of the television this year?
I need help please, how do U do this?
Answer:
1) point slope form: y-y1=m(x-x1) so y-3=5/3(x-1)
y-3=5/3x-5/3
y=5/3x+4/3 <---bc 9/3-5/3=4/3
2)Plug in 1,2,3,4,5 for x and solve
y=5/3*1-4/3
y=1/3 (1, 1/3)
y=5/3*2-4/3
y=2 (2,2)
y=5/3*3-4/3
y=11/3 (3, 11/3)
y=5/3*4-4/3
y=16/3 (4, 16,3)
y=5/3*5-4/3
y=24/3 or 8 (5,8)
3) Plot the ordered pairs I wrote above
Choose the correct domain and range for the graph.
Ty
Answer:
The answer is C.
Step-by-step explanation:
The domain is the x axis which goes infinitely both ways left and right. The range is the y axis and it starts at -3 and continues downwards infinitely.
Someone HELP ME PLEASE
The ratio of three numbers is 4:5:3. The sum of the numbers is 72. What is the smallest value in the ratio of 3 numbers? What is the largest number?
i need help (,:
Answer:
Smallest number is 18. Largest number is 30.
Step-by-step explanation:
a:b:c = 4:5:3
∃x such that a = 4x, b = 5x, c = 3x
"sum of the numbers is 72"
a+b+c = 4x+5x+3x = 72
x = 6
a = 4x = 24
b = 5x = 30
c = 3x = 18
Which number sentence is true?
§ > }
Done →
Write the equation for each line : L,M,N,P
Answer: what lines
Step-by-step explanation:
A bakery sells chocolate cupcakes and mocha cupcakes. One day it sold 138 chocolate and 162 mocha. What percent of the cupcakes sold that day were chocolate?
Answer:
88% of the cupcakes sold were chocolate :)
Anyone got the answers for b and c
The price paid for a $83.50 chair with an 8% sales tax.
Answer:
90.18 is the final price.
Step-by-step explanation:
Answer:74.50
Step-by-step explanation:
HELLPPPPPPPP A Blue Ray Player costs $150 and each disc costs $15.50.
The sales tax rate is 7.5%. The expression 0.075(150 + 15.50s) can be used to determine the
amount of sales tax due on the entire purchase.
Expand the expression.
Answer:
150 + 15.50 x 0.075
Step-by-step explanation:
I need help 8,9 and 11
Which of the following are expressions? Check all that apply.
Group of answer choices
3 + x
twelve is three more than nine
the difference of x and 8
2y
Answer:
3 + x
the difference of x and 8
Step-by-step explanation:
brailiest?
Plzzz help i need help quick the right answer gets a thanks, 5 stars, and a Brainly!
Answer:
The absoloute value is 2
Step-by-step explanation:
absoloute value is the places away from 0. -2 is 2 spots away from 0.
Answer:
2
Step-by-step explanation:
The absolute value is the place away from 0. -2 is 2 spots away from 0.
Any one know how to do this ? 1 through 4
Answer:
1. U = 54 T = 72
2. M = 76 N = 76
3. F = 134 EF = 18
4. P = 60 Q = 60 R = 60
Step-by-step explanation:
1. the triangle given is an isosceles triangle. this means that the two angles that aren't connected with a congruent side, have the same measures. These angles are also called base angles
in this case, those two angles are S and U
since we know S is 54, U will also be 54
to find the third angle, add all your know angles, then subtract it from 180. We do this because all the angles in a triangle will always add up to 180.
180 - (54 + 54) = 72
U = 54
T = 72
2. In this case M and N are your base angles. We know that the base angles are equal, and that when you add them with L, you should get 180.
we can start by subtracting L from 180 to find the sum of M and N
180 - 28 = 152
now divide this by 2 to find the individual angles:
152 / 2 = 76
so: M = 76 and N = 76
3. For this one, we can do something similar to what we did in question 1 to find F. Just add the base angle, and subtract it from 180 to find the third angle:
180 - (23 + 23) = 134
In isosceles triangles, there are two lines that are congruent, these two lines are the lines that meet at the abnormal angle. In this case, GF and EF are those lines.
so if GF is 18, then EF is also 18
4. This triangle is an equilateral triangle. This means that all sides and angles are congruent. to find the angles, all we have to do is divide 180 by 3, since there are 3 equal angles.
180 / 3 = 60
every angle is 60
How do you like this bakugou drawing I did?
Answer:
It’s really good! Keep up the good work!
Step-by-step explanation:
The drawing is awesome
A $300 suit is marked down by 30%. Find the sale
Price?
Please help me hurry
Answer:
$90 mark brainliest please
Step-by-step explanation:
300 times 0.3 equals 90
Answer:
90
Step-by-step explanation:
it is 90 trust did the work