Answers
Answer:
27y
Step-by-step explanation: becuase i have done that before
Related Questions
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.
Answers
Answer:
B. use a larger sample size
Step-by-step explanation:
the bigger the sample size, the more accurate the results are in stats.
La sombra de un árbol cuando los rayos del sol forman con la horizontal un ángulo de 36º, mide 11 metros. ¿Cuál es la altura del árbol?
Answers
Answer:
La altura del árbol es 8 metros.
Step-by-step explanation:
La sombra de un árbol, cuando los rayos del sol forman con la horizontal un ángulo de 36º, mide 11 metros. Esto se puede observar en la imagen adjunta.
La trigonometría estudia la relación entre los lados y ángulos de los triángulos. Las razones trigonométricas de un ángulo α son las razones obtenidas entre los tres lados de un triángulo rectángulo (uno de sus ángulos es recto y mide 90°).
La tangente de un ángulo es la razón entre el cateto opuesto y el cateto contiguo o cateto adyacente. En este caso se debe aplicar dicha relación trigonométrica.
[tex]tan(\alpha )=\frac{cateto opuesto}{cateto adyacente}[/tex]
En este caso, se conoce el ángulo, cuyo valor es 36°, y el cateto adyacente, cuyo valor es 11. Reemplazando:
[tex]tan(36 )=\frac{cateto opuesto}{11}[/tex]
Resolviendo:
cateto adyacente= tan(36)*11
cateto adyacente= 7.99 metros ≅ 8 metros
La altura del árbol es 8 metros.
ANYONE A ACE OR EXPERT? PLEASE ANSWER THIS I NEED HELP
Answers
Answer:
Ace here. What do you need help with?
Según la gráfica cuadrática de la expresión y= x² + 1 ¿Cuales serían las coordenadas cuando x es igual a -2,-1 y 0?
Answers
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 )
A DJ charges $175 and $35 an hour, h, for parties. Which equation shows the total cost, C, for hiring the DJ? A. C = 175h + 35 B. C = 35h + 175 C. C = (175 + 35)h D. C = 175 + 35 + h
Answers
Answer:
-98 x (175-34)
Step-by-step explanation:
A line that includes the points (-9, 6) and (-3, s) has a slope of -1. What is the value of s?
Answers
Answer:
s=0
Step-by-step explanation:
We have two points so we can use the slope formula
m = (y2-y1) / x2-x1)
-1 = (s-6)/(-3 - -9)
-1 = (s-6)/(-3 +9)
-1 = (s-6)/(6)
Multiply each side by 6
6*-1 = s-6
-6 = s-6
Add 6 to each side
-6+6 = s-6+6
s=0
Answer:
[tex] \large\sf \: s = 0[/tex]
Value of s is 0.
Step-by-step explanation:
Here,
A line that includes 2 two points are ( -9 ,6) and (-3, s) and has a slope of - 1.
Using slope formula
m = ( y ² - y ¹ ) / ( x ² - x ¹)
Where,
m , is the slope which is -1( y ² - y ¹ ) = ( s - 6 )( x ² - x ¹) = ( - 3 - ( - 9 ) )substitute the values into the formula
-1 = ( s - 6 ) / ( - 3 - ( - 9 ) )
-1 = ( s - 6 ) / ( - 3 + 9 )
- 1 = ( s - 6 ) / ( 6 )
multiply each side by 2
- 1 × 6 = s - 6 × 6 / 6
- 6 = s - 6
- 6 + 6 = s - 6 + 6 ..( add 6 to each side)
0 = s
pls help !!! :))
17. If m_1 = 98º and mz2 = 19º,
what is mz3?
Answers
Answer:
angle 3 = 79 degree
Step-by-step explanation:
given:
angle 1 = 98 degree
angle 2 : 19 degree
angle 3 =?
angle 2 + angle 3 =angle 1 (sum of two interior angle opposite angles is equal to the exterior angle formed)
19 + angle 3 = 98
angle 3 = 98 - 19
angle 3 = 79 degree
-6x + 7y = 9
2x - 2y = 4
Answers
7909081131
8709196751
7250401594
9835094365
8340436845
7258061562
please contact this Nr. for the best answer
This is world best teacher
*Chuckles* my GPA is in danger
Answers
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.
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?
Answers
Step-by-step explanation:
hope you can understand it properly
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?
Answers
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.
Mrs. Daley works at a Future Shop and earns $12.35/h plus 4% commission on sales. Last week she worked 45 hours. What was her weekly gross salary if her total sales were $4550?
Answers
Answer:
737.75
Step-by-step explanation:
12.35h + .04c = salary
12.35 (45) + .04(4550) = salary
555.75 + 182 = salary
Question
In order to save for a new car, Charles adds money each month to a savings account which earns interest that is compounded monthly. Charles has created the expression 400((1+0.0212)12⋅3−10.0212) to calculate how much money he will have in his savings account when he is ready to purchase the car.
What do the values 400, 0.02, 12, and 3 represent in the expression?
Answers
Answer:
Step-by-step explanation:
Please Answer The Question Below As Fast As Possible Who Answers First Get's Brainliest..
Answers
Answer:
110
Step-by-step explanation:
Using the expansion
(a + b)³ = a³ + b³ + 3ab(a + b)
Given
x + [tex]\frac{1}{x}[/tex] = 5 ( cube both sides )
(x + [tex]\frac{1}{x}[/tex] )³ = 5³ = 125 ← expand left side using identity
x³ + [tex]\frac{1}{x^3}[/tex] + 3(x × [tex]\frac{1}{x}[/tex] )(x + [tex]\frac{1}{x}[/tex] ) = 125
x³ + [tex]\frac{1}{x^3}[/tex] + 3(1)(5) = 125
x³ + [tex]\frac{1}{x^3}[/tex] + 15 = 125 ( subtract 15 from both sides )
x³ + [tex]\frac{1}{x^3}[/tex] = 110
Answer:
Step-by-step explanation:
Hope this helps u !!
A rectangular prism has a length of
feet
, a width of 3 feet, and a height of 5 feet. If the width of the prism is doubled, which statement is true about the new rectangular prism?
Answers
Answer:
Its volume is 2 times the original volume.
Step-by-step explanation:
It cant be the first 2 because you are making it bigger, not smaller. and it cant be the last one because you are only doubling one of the parts.
Answer:
Step-by-step explanation:
its is the second one
Determine the range for the function y = (x - 3 )^2 + 4.
Answers
Answer:
Solutions are x=2 and x=−2 . At these points the function has vertical asymptotes. To address the range, let's first transform...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?
Answers
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]
A fraction that has the same number in the numerator
and the denominator is equal to what value?
Answers
i think its value 1 coz e.g if fraction was somethin like 12/12 i do 12÷12 which equals to one so all fracfions with same denominator and numerator equal to value 1
A principal of $2700 is invested at 6.25% interest, compounded annually. How much will the investment be worth after 13 years?
Use the calculator provided and round your answer to the nearest dollar.
$
Answers
Answer:
$5938
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Compounded Interest Rate Formula: [tex]\displaystyle A = P(1 + \frac{r}{n})^{nt}[/tex]
P is principle amountr is raten is compounded ratet is timeStep-by-step explanation:
Step 1: Define
Identify variables
P = 2700
r = 6.25% = 0.0625
n = 1
t = 13
Step 2: Find Interest
Substitute in variables [Compounded Interest Rate Formula]: [tex]\displaystyle A = 2700(1 + \frac{0.0625}{1})^{1 \cdot 13}[/tex][Exponents] Multiply: [tex]\displaystyle A = 2700(1 + \frac{0.0625}{1})^{13}[/tex](Parenthesis) Divide: [tex]\displaystyle A = 2700(1 + 0.0625)^{13}[/tex](Parenthesis) Add: [tex]\displaystyle A = 2700(1.0625)^{13}[/tex]Evaluate exponents: [tex]\displaystyle A = 2700(2.19926)[/tex]Multiply: [tex]\displaystyle A = 5938[/tex]an athlete jumps these 4 distances in a long jump competition. which jump does NOT round to 4.7 meters?
Answers
Answer:
3rd jump: 4.642 rounds down to 4.6
Is the percent increase from 50 to 70 equal to thhe percent decease from 70 to 50
Answers
Answer:
No
Step-by-step explanation:
The amounts of change are the same, but the original amounts are different. The ratio for the percent increase from 50 to 70 is 20/50, or 40%. The ratio for the percent decrease from 70 to 50 is 20/70, or about 29%.
Answer:
Step-by-step explanation:
Though the difference is the same, the original value is different. Therefore they are not the same.
Percentage increase from 50 to 70
[tex]=\frac{70 - 50}{50} \times 100\\\\=\frac{20}{50} \times 100 = 40 \%[/tex]
Percentage decrease from 70 to 50
[tex]= \frac{70-50}{70} \times 100\\\\= \frac{20}{70} \times 100 = 28.57 \%[/tex]
What two-dimensional shape is formed by the cross section below?
Answers
Answer:
B. Circle
Step-by-step explanation:
Find the value of 1×4+2×5+3×6......n×（n+3）
Answers
Answer:
n(n+1)(n+5)/3
Step-by-step explanation:
there is no value, as we don't know n.
but we can create a summary formula/ function definition :
this is the sum for k = 1 to n of k×(k+3)
k×(k+3) = k² + 3k
so, the overall sum splits into the sum of k² for k=1 to n, and the sum of 3k for k=1 to n.
and the sum of 3k is 3 times the sum of k for k=1 to n.
Σk² for k=1 to n = [n(n+1)(2n+1)]/6
Σk for k=1 to n = n(n+1)/2
3×Σk for k=1 to n = 3×n(n+1)/2
so, we have a function formula
n(n+1)(2n+1)/6 + 3n(n+1)/2 = n(n+1)(2n+1)/6 + 9n(n+1)/6 =
= n(n+1)(2n+1+9)/6 = n(n+1)(2n+10)/6 = n(n+1)(n+5)/3
Un número real no puede pertenecer a los racionales y a los irracionales a la vez?
Answers
Step-by-step explanation:
eso es cierto y correcto por supuesto, es tan obvio
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
Answers
negative 4 minus 8 equals
Answers
Answer:
-12
hope this helps!
add me as a friend if u can<3
hope that helps
Profit and Loss question class -9
Answers
Answer:
Rs 2.25
Step-by-step explanation:
S.P. = 375 * 3.36 = 1260
C.P. = 1125. for 500 mangoes
So for 1 mango,
C.P. = Rs 2.25
Answer:
₹2.25
Step-by-step explanation:
Selling price of 1 mango = ₹3.36
Mangoes in good state = 500 - 125 = 375
Selling price of 375 mangoes = 3.36 *375 = ₹ 1260
Cost price = [tex]\frac{100}{100+profit}*SP[/tex]
[tex]= \frac{100}{100+12}*1260\\\\=\frac{100}{112}*1260\\\\= 1125[/tex]
Cost price of 500 mangoes = ₹ 1125
CP of 1 mango = 1125/500 = ₹2.25
A plane, initially traveling 150 mi./hr. 100 east of north, suddenly enters a region where the wind is blowing at 50 mi./hr. from the southwest.
What is the plane’s resultant direction?
Answers
Answer:
the Velocity of the plane is 100 mi/hr along the northeast direction
Step-by-step explanation:
According to the Question,
Given That, the Initial velocity of the plane is 150 mi/hr along the east north direction and the wind is blowing at 50 mi/hr along the southwest directionsince the velocity of wind and plane is exactly opposite
the relative velocity of the plane with respect to the wind is given by[tex]V_{r} = V_{p} -V_{w}[/tex] , where [tex]V_{p}[/tex] is the velocity of plane = 150mi/hr and [tex]V_{w}[/tex] = velocity of wind = 50 mi/hr
Therefore, Relative Velocity = 150-50 ⇒ 100mi/hr along northeast directionThus, the velocity of the plane is 100 mi/hr along the northeast direction
If 4 US dollars can be exchanged for 1.75 Euros. How many Euros can be obtained for 144 US dollars?
Answers
Answer:
63 euros.
Step-by-step explanation:
4 dollars = 1.75 euros
1 dollar = 1.75 / 4 euros, so
144 dollars = (1.75/4) * 144
= 63 euros.
Arlen is planning a dinner party at which he will be able to accommodate seven guests. From past experience, he knows that each person invited to the party will accept his invitation with probability 0.5. He also knows that each person who accepts will actually attend with probability 0.8. Suppose that Arlen invites twelve people. Assuming that they behave independently of one another, what is the probability that he will end up with more guests than he can accommodate
Answers
Answer:
"0.057309921" is the correct answer.
Step-by-step explanation:
According to the question,
The coming probability will be:
= [tex]0.5\times 0.8[/tex]
= [tex]0.4[/tex]
n = 12
p = 0.4
Now,
⇒ [tex]P(X>7)=1-P(X<=7)[/tex]
Here, X = Number of guests
[tex]=1-binom.dist(7,12,0.4,1)[/tex]
[tex]=0.057309921[/tex]
Thus, the above is the correct answer.
