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max2010maxim [7]
3 years ago
8

Is 63/168 and 312/832 different from 66/90 and 143/195 and tell me why please

Mathematics
1 answer:
gulaghasi [49]3 years ago
4 0
36/48 do the math and you will get some thing similer


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The price of an item in a shopping cart is c dollars. If the sales tax on the item is 9%, and the expression c + 0.09c represent
Crank

If you factor c + 0.09c, we get c(1 + 0.09), which is the same as (1 + 0.09)c.

If we add the numbers inside the parentheses (1 + 0.09)c we get 1.09c.

The answer is choice B and E.

8 0
3 years ago
"A supplier of digital memory cards claims that no more than 1% of the cards are defective. In a random sample of 600 memory car
Nady [450]

Answer:

Both the values fall in the critical region so we reject H0: p ≤ 0.01  and conclude that the results are significantly different from chance identification and it is not a sample fluctuation.

Step-by-step explanation:

1) Formulate the hypothesis

H0: p ≤ 0.01 against  the claim Ha: p > 0.01

2) Choose the significance level ∝= 0.01

3) The test statistics under H0 is

z= x -np /√npq  ( without continuity correction)

z= x ± 1/2 -np /√npq  ( with continuity correction)

4) the critical region is z> ±2.33 because the alternate hypothesis is stated on greater than basis.

5)Computations:

Z=  x -np /√npq  ( without continuity correction)

Z= 6- 600( 0.03)/√ 600( 0.03)(0.97)

z= - 2.82  ( without continuity correction)

z= x ± 1/2 -np /√npq  ( with continuity correction)

Z= (6-0.5)- 600( 0.03)/√ 600( 0.03)(0.97)

z= -12.5/4.1785

z= -0.29915  ( with continuity correction)

6) Both the values fall in the critical region so we reject H0: p ≤ 0.01  and conclude that the results are significantly different from chance identification and it is not a sample fluctuation.

8 0
3 years ago
PPPPPPLLLLLZZZZZZZZZZZZZZZZ HELP I NEED THIS BY TMW ON FRIDAY
Triss [41]

Answer: D this would be after you have simplified it.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
The sum of a number and its square is 42. Which equation can be used to find the two numbers for which this is true?
riadik2000 [5.3K]

The sum: "+"

a number: "x"

a square of a number: "x²"


Answer: x + x² = 42 → x² + x = 42

5 0
3 years ago
Read 2 more answers
A sales manager sets sales goals for each of his employees. The manager increases the goals of his salespeople by 5% each month.
Stolb23 [73]

Answer:

Her sales after 6 months are = 127units

Step-by-step explanation:

Percentage increase:- The degree to which a value increases expressed in percent form is known as percentage increase.

formula for % increase = (final value - initial value)/initial value(100)

Here in the question,

percentage increase after every month is = 5%

initial value  =  95 units

therefore by applying above formula :-

[(x-95)/95]×100 = 5          [where x is the value of her sales goals after 1 month]

x = (5/100)×95+ 95

x = 99.75

Now this x will be the initial value for the next month

x₂ = (5/100)99.75+ 99.75             [ x₂ = sales goal after 2 months]

x₂ = (5/100)×99.75+ 99.75

x₂ = 104.73

similarly,

(x₃-104.73/104.73)100 = 5       [x₃ = sales after 3 months]

x₃ = 109.96

similarly for 4th month,

(x₄ -109.96/109.96)100 = 5       [x₄ = sales after 4 months]

x₄ = 115.45

for 5th month,

(x₅ -115.45/115.45)100 = 5       [x₅ = sales after 5 months]

x₅ = 121.22

finally for the 6th month

(x₆-121.22/121.22)100 = 5        [x₆ = sales after 6 months]

x₆ = 127.28

therefore,

her sales after 6 months are = 127.28 units or 127 units by rounding off

learn more on percentage increase at :

brainly.com/question/14163915

#SPJ10

3 0
2 years ago
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