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1 year ago

Which of these numbers are relatively prime to 51? Select all that apply. da) 84 Ob) 70 Oc) 62 0d) 30

Mathematics

1 answer:

iren2701 [21]1 year ago

6 0

Answer:

b) 70

c) 62

Step-by-step explanation:

Numbers are relatively prime when they have no factors in common.

The factors of 51 are ...

51 = 3×17

The factors of the other numbers are ...

84 = 2²×3×7 . . . . . has a factor of 3 in common with 51

70 = 2×5×7 . . . . . . no factors in common

62 = 2×31 . . . . . . . no factors in common

30 = 2×3×5 . . . . . has a factor of 3 in common with 51

The numbers 70 and 62 are relatively prime to 51.

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(3n^3)^2 without exponet

sergejj [24]

Step-by-step explanation:

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2 years ago

[x + 3y = -4] [2x + 6y = 5]

stealth61 [152]

Step-by-step explanation:

x+3y=-4(eqn1)

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2 years ago

A bottle contains 568 millilitres of milk, jack pours out half a litre. How much milk is left

aleksandrvk [35]

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2 years ago

2x – бу = 12<br> -5x - 15 = -30

erastova [34]

Answer:

x=7 and y= 1/3

Step-by-step explanation:

we have -5x - 15 = -30 <=> x + 3 = 10

x= 7

if x=7

so 2×7 - 6y = 12 <=> 14 - 12 = 6×y

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2 years ago

Stan's heart rate, in beats per minute, was measured 20 times at random. The results are 82, 84, 98, 112, 97, 93, 91, 87, 112, 8

Licemer1 [7]

Answer:

(80.4942, 94.9052)

Step-by-step explanation:

The sample mean is x = 87.7.

The sample standard deviation is s = 11.26.

At 99% confidence and 19 degrees of freedom, the critical value is t = 2.861.

The confidence interval is:

x ± t (s/√n)

87.7 ± 2.861 (11.26 / √20)

87.7 ± 7.2053

(80.4947, 94.9053)

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2 years ago