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3 years ago

Simplify the expression using properties of operations. (−r−5)−(−2r−4)

Mathematics

1 answer:

Pachacha [2.7K]3 years ago

8 0

Answer:r-1

Step-by-step explanation:

(-r-5)-(-2r-4) Or (-r-5)-(-2r-4)

-r+-5+2r+4. -r-5+2r+4

r-1 r-1

You bring down the first Parentheses Then have to multiply the (implied 1) -1•-2=2 and -1•-4=4 and do the math regularly

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What number is 16% of 46? Which equation and solution represents each situation?

3241004551 [841]

Answer:

the answer to this question is 7.36....its equation is 16/100*46

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3 years ago

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two numbered 1 to 6 dice are thrown together and their scores are added. the probability that the sum will be 4 is?

natulia [17]

Answer:

$Pr = \frac{3}{36}$

Step-by-step explanation:

Given

2 number die

Required

P(Sum = 4)

The sample space of 2 die is:

$S = \{(1, 1) (1, 2) (1, 3) (1, 4) (1, 5) (1, 6), (2, 1) (2, 2) (2, 3) (2, 4) (2, 5) (2, 6)$

$(3, 1) (3, 2) (3, 3) (3, 4) (3, 5) (3, 6), (4, 1) (4, 2) (4, 3) (4, 4) (4, 5) (4, 6)$

$(5, 1) (5, 2) (5, 3) (5, 4) (5, 5) (5, 6), (6, 1) (6, 2) (6, 3) (6, 4) (6, 5) (6, 6)$

$n(S)= 36$

The pairs that adds up to 4 are:

$Sum(4) = \{(1,3), (2,2),(3,1)\}$

$n(Sum) =3$

So, the probability is:

$Pr = \frac{n(Sum)}{n(S)}$

$Pr = \frac{3}{36}$

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3 years ago

What needs to be done to 21/10 to complete the problem? If you can, try to fix it yourself.<br><br>

Olin [163]

Answer:

This is an improper fraction so we need to make it a mix fraction.

Step-by-step explanation:

21/10 = 10/10+10/10+1/10

10/10=1

So your final answer will be $2\frac{1}{10}$

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3 years ago

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What is m∠ BAC???????

Korvikt [17]

Answer:

36 degrees

Step-by-step explanation:

I’m pretty sure that’s it

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3 years ago

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Please can some help me in this?

tino4ka555 [31]

Answer:

n = 70

Step-by-step explanation:

14 * x < 80

x = 6 won't work

14 * 6 = 84 which beyond the boundry.

14 * 5 = 70 which is less than 80 and is divisible by 14

14 * 3 = 42

70 does not have a 3 in it.

So the largest number that has 14 in it and is less than 80 is 70

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3 years ago