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adoni [48]
3 years ago
8

Rita needs to buy some dog food. At the nearest store, 4 bags of dog food cost $26.8. How much would Rita spend on 8 bags of dog

food?
Mathematics
1 answer:
Step2247 [10]3 years ago
7 0

Answer:

$53.6

Step-by-step explanation:

\frac{4}{26.8} =\frac{8}{x} \\\\4x=214.4\\x=53.6

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A study was designed to compare the attitudes of two groups of nursing students towards computers. Group 1 had previously taken
trasher [3.6K]

Answer:

Kindly check explanation

Step-by-step explanation:

Given the following :

Group 1:

μ1 = 59.7

s1 = 2.8

n1 = sample size = 12

Group 2:

μ2 = 64.7

s2 = 8.3

n2 = sample size = 15

α = 0.1

Assume normal distribution and equ sample variance

A.)

Null and alternative hypothesis

Null : μ1 = μ2

Alternative : μ1 < μ2

B.)

USing the t test

Test statistic :

t = (m1 - m2) / S(√1/n1 + 1/n2)

S = √(((n1 - 1)s²1 + (n2 - 1)s²2) / (n1 + n2 - 2))

S = √(((12 - 1)2.8^2 + (15 - 1)8.3^2) / (12 + 15 - 2))

S = 6.4829005

t = (59.7 - 64.7) / 6.4829005(√1/12 + 1/15)

t = - 5 / 2.5108165

tstat = −1.991384

Decision rule :

If tstat < - tα, (n1+n2-2) ; reject the Null

tstat < t0.1,25

From t table :

-t0.1, 25 = - 1.3163

tstat = - 1.9913

-1.9913 < - 1.3163 ; Hence reject the Null

5 0
3 years ago
5. Write an expression equivalent to x - 3y + 4.​
Pepsi [2]

Answer:

2x - 6y + 8

Step-by-step explanation:

7 0
2 years ago
  I need help on 7 and 8 plssssss
lilavasa [31]
I think the domain and range are infinite
3 0
3 years ago
Read 2 more answers
Suppose c was a total membership cost for m the two equations that model c are c=30m+50 an c=20m+100
Maksim231197 [3]

Answer:

5 months

Step-by-step explanation:

Given

c = 30m + 50

c = 20m + 100

Required [Missing from the question]

At what month will the cost be equal

To do this, we equate both expressions

c = c

This gives:

30m + 50 = 20m + 100

Collect like terms

30m - 20m = 100 - 50

10m = 50\\

Solve for m

m = \frac{50}{10}

m = 5

8 0
3 years ago
AND Use el adverbio TAN o una forma del adjetivo TANTO para formar frases de comparación. (1 point each, 4 points total) Ejemplo
dybincka [34]

Answer:

10. México es un país con mucha gente (más de 130 millones de personas). Aunque es más grande, la Argentina tiene menos 45 millones de personas.

ARGENTINA NO ES TAN GRANDE COMO MÉXICO.

11. Ellos tienen cinco hijos y nosotros otros tenemos cinco hijos también.

ELLOS TIENEN TANTOS HIJOS COMO NOSOTROS.

12. Carlos no tiene mucho dinero, pero Felipe es rico.

CARLOS NO TIENE TANTO DINERO COMO FELIPE.

13. Linda es muy simpática, me gusta Dolores.

LINDA ES TAN SIMPÁTICA, PERO ME GUSTA DOLORES.

6 0
3 years ago
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