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ycow [4]
3 years ago
12

Which pair of number is relative prime 7 and 42 16 and 39 66 and 77 90 and 891

Mathematics
1 answer:
Ann [662]3 years ago
4 0
The relative prime pair is 16 and 39.

This is because between the two numbers their greatest common factor is 1.

Factors of 16 are 1, 2, 4, 8, 16
Factors of 39 are 1, 3, 13, 39,

The rest of the pairs have more common factors than 1.

relative prime are also called coprime or strangers.
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If the sales tax is 8.5%, what is the cost of a pair of shoes with a price of $80?
vesna_86 [32]
Multiply 80 by the decimal version of the percentage, .085, to get the tax of $6.8. Then add 6.8 to 80 and get the final price of the shoes $86.80
4 0
3 years ago
Find the value of x, rounded to the nearest tenth​
tatyana61 [14]

Answer:

x ≈ 8.9

Step-by-step explanation:

Given a tangent and a secant from an external point to the circle, the the square of the tangent is equal to the product of the external part of the secant and the entire secant, that is

x² = 8(8 + 2) = 8 × 10 = 80 ( take the square root of both sides )

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6 0
3 years ago
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Bas_tet [7]

Answer:

a² + 2ab + b²

Explanation:

⇒ (a + b)²

⇒ (a + b)(a + b)    

[apply distributive method: (a + b) (c + d) = ac + ad + bc + bd]

⇒ a² + ab + ab + b²

⇒ a² + 2ab + b²

3 0
1 year ago
Read 2 more answers
The sail on a souvenir boat is similar in shape to the sail on a sailboat. The sail on the sailboat is in the shape of a right t
Triss [41]

Answer:

1 1/8 inches.

Step-by-step explanation:

As the sails are similar,  corresponding sides are in the same ratio, so we have the equation

:24/3 = 9/b     where  b = base of the souvenir boat.

Cross multiply:

24b = 9*3

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3 0
3 years ago
Can someone help me on this one?
jarptica [38.1K]

Answer:

A=15

B=13??

C=15

D=85

Step-by-step explanation:

B is the only one I'm not sure

5 0
3 years ago
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