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4 years ago

What is the rule for the sum of angles?

2 answers:

8 0

Answer: Memorise the rule that the sum of the interior angles of a polygon = (n-2) × 180°, and that each interior angle of a regular polygon can be calculated by the rule: (n-2) × 180° / n, where 'n' refers to the number of sides.

Step-by-step explanation:

Roman55 [17]4 years ago

6 0

Step-by-step explanation:

remeber this rule

sum=(n-2)*180°

n is no of side

take that away from 2

multiply 180

e.g triangle

3 sides

take away 2

3-2 is 1.

multiply by 180

1*180 is 180°

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The Green family drinks 0.5 gallons a milk a day. Will 2.5 gallons last enough them more than a week?? Explain.

raketka [301]

Answer:

Step-by-step explanation:

No because if you have 2.5 gallons and you drink at a rate of 0.5 per day. 2.5/0.5=5. So they will only have 5 days of milk.

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3 years ago

Choose the correct description of the graph of the compound inequality: x − 2 > −3 and 3x less than or equal to 12

ziro4ka [17]

From the first inequality x > 2 - 3 so x> -1
and from the second:- x <= 4
so the graph will be a number line with an open circle at x = -1 and a closed circle at x = 4 and the line is shaded in between.

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3 years ago

Match each step with the property used to get to that step. (Note: the column that lists the algebraic expressions is already in

Norma-Jean [14]

(6x + 3) - 5x

(3 + 6x) - 5x.....commutative
3 + (6x - 5x).....associative
3 + (6 - 5)x...distributive
3 + 1x....subtraction
3 + x....multiplicative identity

7 0

4 years ago

Read 2 more answers

Given vectors A (2,-1,5), B (4,3,-2) & C (5,4,0), find:?

MrRissso [65]

A) 4a - 3b + 2c

4(2, -1, 5) - 3(4, 3 , -2) + 2(5, 4, 0) = (8, -4, 20) - (12, 9, - 6) + (10, 8, 0) =

= (8 - 12 + 10 , -4 - 9 + 8 , 20 + 6 + 0) = (6, - 5, 26)

Answer: (6, - 5, 26)

b) magnitude of vector b

$\sqrt{4^2+3^2+(-2)^2} = \sqrt{16+9+4} = \sqrt{29} ~ 5.4$

c) vector of length 7 parallel to vector c

=> m(5,4,0) = (5m,4m,0)

=> $\sqrt{(5m)^2+(4m)^2+0}= \sqrt{25m^2+16m^2}= \sqrt{41m^2}=m \sqrt{41}=7$

=> m = 7 / √41 ≈ 1.093

=> 1.093 (5, 4, 0) = (5.465 , 4.372, 0)

Answer: (5.465 , 4.372 , 0)

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4 years ago

What is 24/40 as a decimal

Basile [38]

You take 24/40 by taking it into itself 24/40 this equals to 60% also know as 0.6 in decimal form.

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3 years ago

Read 2 more answers