2 years ago

Expand & simplify 2 ( b + 4 ) + 5 ( b − 3 )

Mathematics

1 answer:

Usimov [2.4K]2 years ago

8 0

Answer:

7b - 7

Step-by-step explanation:

You can use distributive property which is x (a + b) = x*a + x*b and x (a - b) = x*a - x*b. Therefore, the expression is 2*b + 2*4 + 5*b - 5*3 which is:

2b + 8 + 5b - 15, which is, if you combine like terms:

7b - 7

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Test for the commutative property of union and intersection of the sets P = { x : x is all real numbers between 2 and 7} and Q =

In-s [12.5K]

Answer:

Step-by-step explanation:

P = {x : x is a real number between 2 and 7}

{x: 3,4,5,6}

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{4 }

We know that P contains all the rational numbers between 2 and 7.

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2 years ago

What is 8.4 as simplest fraction.

denis23 [38]

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Step-by-step explanation:(google)

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I need help in this please! thanks

svp [43]

Answer:

θ = 85.93° (≈ 86°)

Step-by-step explanation:

arc length : 2πr = θ : 360°

7.5 : 2πr = θ : 360°

θ = (7.5 * 360°) / (2π*5) = 2700 / 31.42 = 85.93°

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