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3 years ago

WHICH IS THE SIMPLIFIED FORM OF THE EXPRESSION? 9(r + 3) -1/2 (4r - 16 )

Mathematics

2 answers:

irga5000 [103]3 years ago

7 0

I assume that there should be a equal sign somewhere in here and if there is then the answer will look something like this r=5 if there is not then the answer would be 7r+35 the photo below should explain why.

Usimov [2.4K]3 years ago

5 0

9(r + 3) - ¹/₂(4r - 16)
9(r) + 9(3) - ¹/₂(4r) + ¹/₂(16)
9r + 27 - 2r + 8
9r - 2r + 27 + 8
7r + 35

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a coin is tossed and an eight sided die numbered 1 through 8 is rolled. find the probability of tossing a head and then rolling

Alekssandra [29.7K]

Answer:

The answer is 4.

Step-by-step explanation:

There are 16 possible outcomes of this, and of those, only 4 of them result in the coin landing on heads and landing on a number that is greater than 4.

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3 years ago

28/29 and 30 plz short explanation thanks

Feliz [49]

Integers are numbers like ...-3, -2, -1, 0, 1, 2, 3... and so on. So, according to this definition, let's solve this problem:

28. We know that the product of three integers is -3. So, the statement states that we have three factor, so:

a.b.c = -3

The possible values of the factors are:

Factors are: 3, 1 and -1 in which case:

(3)(1)(-1) = -3

Factors are: -3, 1 and 1 in which case:

(-3)(1)(1) = -3

29. In this problem we know two nonzero integers, that is, they cannot be equal to zero. Thus, they must have different sign, that is, one of them must be positive and the other negative. For instance:

-9 and 2

(-9)(2) = -18, So -18 is less than -9 and 2

Another example:

1 and -8

(1)(-8) = -8, So -8 is equal to -8 and -8 is less than 1.

30. The sign of the product of two integers with the same sign is positive, that is:

(+)(+) = (+) and

(-)(-) = (+)

So, the sign of the product of three integers with the same sign are two options:

Option 1. The three integers are positive in which case:

(+)(+)(+) = (+), So the sign of the product is positive

Option 2. The three integers are negative in which case:

(-)(-)(-) = (-), So the sign of the product is negative.

This option two gives us that result because:

(-)(-) = (+) and (+)(-) = (-)

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4 years ago

What is 5 and 1 / 2 plus 6 and 3/6=

OverLord2011 [107]

12 I have to write 20 characters sorry don’t read this please

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3 years ago

15. In triangle ∆PQR, C is the centroid.

Dmitrij [34]

Because C is the centroid, therefore:

Segments PZ = ZR; RY = YQ; QX = XP

A.
If CY = 10, then

PC = 2*CY = 20
PY = PC + CY = 20 + 10 = 30
Answer: PC = 20 PY = 30

B.
If QC = 10, then

ZC = QC/2 = 5
ZQ = ZC + QC = 5 + 10 = 15
Answer: ZC = 5 ZQ = 15

C.
If PX = 20
Because the median RX bisects side PQ, therefore PX = QX = 20
PQ = PX + QX = 40
Answer: PQ = 40