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Mama L [17]
3 years ago
11

Pls answer this with an explanation if you can pg3 pt12

Mathematics
1 answer:
faust18 [17]3 years ago
7 0
With each gallon you need 11 gallons with 2 parts red 9 parts yellow and since 11x4= 44 you need to do this 4 times
4x2(red)= 8
4x9(yellow)=36
36+8=44
basically 8 gallons of red
i hope this made sense
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The breaking strength of a fiber is required to be at least 150 psi. Past experience has indicated that the standard deviation o
aleksley [76]

Answer:

(a) Null hypothesis: The breaking strength of a fiber is required to be 150 psi

Alternate hypothesis: The breaking strength of a fiber is required to be 150 psi or greater than 150 psi

(b) Fail to reject the null hypothesis. The breaking strength of a fiber is required to be 150 psi

(c) P-value is 0.025

(d) 95% confidence interval for the mean breaking strength is between 145.227 psi and 154.773 psi

Step-by-step explanation:

(a) The null hypothesis is a statement from the population parameter which is subject to testing. The alternate hypothesis is also a statement from the population parameter that negates the null hypothesis.

(b) Z = (sample mean - population mean) ÷ sd/√n

sample mean = 145+153+150+147/4 = 148.75 psi, population mean = 150 psi, sd = 3 psi, n= 4

Z = (148.75 - 150) ÷ 3/√4 = -1.25 ÷ 1.5 = -0.833

This test is a two tailed test. The critical value at 0.05 significance level is 1.96. The region of no rejection of the null hypothesis lies between -1.96 and 1.96 since it is a two tailed test.

Conclusion: since -0.833 falls within the region bounded by -1.96 and 1.96, fail to reject the null hypothesis. The breaking strength of a fiber is required to be 150 psi

(c) The cumulative area for the critical value Z = 1.96 is 0.9750

P-value = 1 - 0.9750 = 0.025

(d) Confidence Interval = mean + or - error margin (E)

E = t×sd/√n

n = 4, degree of freedom = n-1 = 4-1 = 3, t-value corresponding to 3 degrees of freedom and 95% confidence level is 3.182

E = 3.182×3/√4 = 4.773

Lower limit = mean - E = 150 - 4.773 = 145.227

Upper limit = mean + E = 150 + 4.773 = 154.773

95% confidence interval is (145.227 psi, 154.773 psi)

7 0
3 years ago
For the 2015 Intel Science Fair, two brothers in high school recruited 47 of their classmates to take part in a two-stage study.
kvv77 [185]

Answer:

a) 47

b) 3

c)  1

d) 2

e) 47

f) 3

Step-by-step explanation:

read the textbook

8 0
3 years ago
Read 2 more answers
Please find the question
melisa1 [442]

Answer:

By distance formula ,

AB² = (5+1)² + (3-6)²

AB² = 36 + 9

AB = 6.71 units

6 0
4 years ago
Plz help me and explain how to do!!!!
kumpel [21]
X is equal to 16. This is because angle Z is congruent to angle X, which means that angle Y and angle W are congruent so if you use the calculation
x + 3 = 2x - 13 you will get that x is 16. 
8 0
3 years ago
Kiara desea contratar el servicio de una línea telefónica con internet para realizar sus clases virtuales. Si el costo de una lí
ArbitrLikvidat [17]

a) Kiara ha adquirido una línea de telefonía móvil con internet a un Coste Fijo de 10 soles y un Tasa de Consumo de 1,5 soles por hora consumida.

b) El Coste total por 48 horas de consumo de la línea telefónica con internet es 82 soles.

a) Nota - Puesto que la ecuación que describe el Coste ya existe en el enunciado, entonces se entiende el verbo <em>"Expresa"</em> como <em>"Describa en sus propias palabras"</em>.

Como puede apreciarse el Coste de la línea telefónica móvil aumenta linealmente con el Tiempo de consumo por parte del usuario. En consecuencia, la función de Coste queda definida como sigue:

C(t) = C_{o} + r\cdot t (1)

Donde:

  • C_{o} - Coste fijo, en soles.
  • r - Tasa de consumo, en soles por hora.

Entonces, tenemos que Kiara ha adquirido una línea de telefonía móvil con internet a un Coste Fijo de 10 soles y un Tasa de Consumo de 1,5 soles por hora consumida.

b) Una característica de las Funciones Lineales es que tanto su Dominio como Rango comprenden al Conjunto de todos los Números Reales, al ser de Pendiente constante esta Función.

Por tanto, el Dominio y el Rango de la Función en cuestión es el Conjunto de todos los Números Reales.

c) Si sabemos que C_{o} = 10, r = 1,5 y t = 48, entonces el Coste Total por concepto de 48 horas de consumo es:

C(48) = 10 + 1,5\cdot (48)

C(48) = 82

El Coste total por 48 horas de consumo de la línea telefónica con internet es 82 soles.

Invitamos a ver este problema sobre Costes: brainly.com/question/15723794

7 0
3 years ago
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