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lubasha [3.4K]
3 years ago
11

Are 3x + 2 and 3 (x + 2 ) equal

Mathematics
1 answer:
Nata [24]3 years ago
8 0

Answer:

No

Step-by-step explanation:

Parenthesis means to multiply. So, to simplify the expression 3(x + 2), we need to distribute 3. In other words, we need to multiply 3 to x and to 2. Thus 3(x + 2) = 3x + 6.

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amid [387]
Where are the answers
8 0
4 years ago
(a) the probability that a vampire bat would pick A (b) the probability that a vampire bat would pick C (c) the probability that
grin007 [14]

Answer:

See Explanation

Step-by-step explanation:

See attachment for complete question.

From the attachment, we have that:

A = 71

C = 121

T = 66

First, we calculate the total

Total = A + C + T

Total = 71 + 121 + 66

Total = 258

Solving (a): Probability of A

This is calculated using:

Probability = \frac{A}{Total}

Probability = \frac{71}{258}

Probability = 0.275

Solving (b): Probability of C

This is calculated using:

Probability = \frac{C}{Total}

Probability = \frac{121}{258}

Probability = 0.469

Solving (b): Probability of T

This is calculated using:

Probability = \frac{T}{Total}

Probability = \frac{66}{258}

Probability = 0.256

3 0
3 years ago
find the value of k for which the following system of equations has a unique solutions 1 . kx +2y= 5 , 3x+y=1​
lana66690 [7]

Answer:

If you choose any value for k other than 6, that will be give you the one solution.

If k=6, you have no solutions because the lines will be parallel.

Step-by-step explanation:

We are going to put each of this in y=mx+b where m is the slope and b is the y-intercept.

kx+2y=5

Subtract kx on both sides:

    2y=-kx+5

Divide both sides by 2:

     y=(-k/2)x+(5/2)

The slope is -k/2 and the y-intercept is 5/2

3x+y=1

Subtract 3x on both sides:

     y=-3x+1

The slope is -3 and the y-intercept is 1.

We want the system to have one solution so we want the slopes to be difference.

So we don't want (-k/2)=(-3).

Multiply both sides by -2: k=6.

We won't want k to be 6.

3 0
3 years ago
Hello everybody. Can somebody please help me on this math question
Nutka1998 [239]

Answers:

<em>See below.</em>

Step-by-step explanations:

(A) This equation evaluates the cost to ship 100 lbs of wheat, which equals $130:

C(100) = 1.28(100) + 2

C(100) = 128 + 2

C(100) = 130

(B) The cost to ship 250 lbs of wheat would be $322:

C(250) = 1.28(250) + 2

C(250) = 320 + 2

C(250) = 322

(C) If you had $50, you could ship 37.5 lb of wheat:

C(x) = 50

C(x) = 48 + 2

C(x) = 1.28(37.5) + 2

3 0
3 years ago
I need help please..... i really do need it
shepuryov [24]

Answer:

Sarah = 78

Lee = 79

Step-by-step explanation:

98   +   100   +   65   +   78   +   98   +   46   +   100   +   100   +   45   +   50 = 780

780÷10= 78

97   +   67   +   89   +   99   +   100   +   45   +   79   +   89   +   58   +   67 =‬

790

790÷10=79

5 0
4 years ago
Read 2 more answers
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