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S_A_V [24]
4 years ago
15

Simplify 6(1/4+5/2)-2

Mathematics
2 answers:
zysi [14]4 years ago
7 0
6(0.25+2.5)-2
6(2.75)-2
16.5-2
=14.5
White raven [17]4 years ago
3 0

Answer:

14 1/2 or 29/2

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PLEASE HELP WILL GIVE BRAINLIEST!!!!!!
Reptile [31]

(2,-6,1)

There are a few way to solve this with linear programming, but I am using a simple substitution method.

The goal is to isolate the variables by subtracting or adding the equations. (note: I will refer to the equations as A,B, and C)

2x+y−z=−3

5x−2y+2z=24

3x−z=5

C already has just two variables, x and z. This means a good place to start is by eliminating at least y from one other equation, if not y and another value. To do this, we need to either add two equations where the y values are opposite or subtract one where the y value is equal. However, the two equations with a y value do not have opposite or the same y values.

To get a new equation, we can multiply A by 2. This will give us +2y, which can be added to B to eliminate the value all together- AND the z value. Remember that the WHOLE A equation needs to be multiplied by 2:

2(2x+y-z)=2(-3)

4x+2y-2z=-6

We can now add 2A to B.

(4x+2y-2z=-6)+(5x−2y+2z=24 )

9x=18

x=2

We now know x=2. We can plug this into C to find the z value.

3x−z=5

3(2)-z=5

6-z=5

-z=-1

z=1

With both x and z, we can find y using A.

2x+y−z=−3

2(2)+y-(1)=-3

4+y-1=-3

3+y=-3

y=-6

x=2, y=-6, z=1

7 0
3 years ago
Simplify the following expressions
Allushta [10]

Answer:

See below.

Step-by-Step Explanation:

5)<em> 8x+9-6x-7</em>

8x + 2 - 6x (Subtract the numbers)

2x + 2 (Combine like terms)

2 (x + 1)  (Common factor - Factor by grouping twice)

6) <em>2y-6+5y+9</em>

2y + 3 + 5y (Add the numbers)

7y + 3 (Combine like terms)

7) <em>3x+8+4x-9</em>

3x - 1 + 4x (Subtract the numbers)

7x - 1      (Combine like terms)

8) <em>9y+16-12y+24</em>

9y + 40 - 12y (Add the numbers)

-3y + 40 (Combine like terms)

9) <em>7g-5-8g+12</em>

7g + 7 - 8g (Add the numbers)

-g + 7 (Combine like terms)

10)<em> 11c-8+5c-8</em>

11c - 16 + 5c (Subtract the numbers)

16c - 16 (Combine like terms)

16 (c - 1)   (Common factor - Factor by grouping twice)

11) <em>5(2x + 3) (This one was a bit blurry, I am assuming that's a addition sign.)</em>

10x + 15 (Distribute)

12) <em>5(-2x+3)</em>

-10x + 15 (Distribute)

Hope this helps!

7 0
2 years ago
Read 2 more answers
Use the quadratic formula to find the solution to the quadratic equation in the box below.
nekit [7.7K]
The solution to the quadratic equation is option D
4 0
3 years ago
Simplify. (12)2−6(2−23) Enter your answer, as a simplified fraction, in the box.
katen-ka-za [31]

Answer: 240

Step-by-step explanation:

Distribute all numbers

24 - 6(-21)

24 - (-126)

24+216

240

8 0
3 years ago
Sam has 35 rubbers.He wants to share them equally between 3 of his friends .How many will each friend receive?How many are left
Nitella [24]

Answer:

11 will be shared out and there will be 2 rubbers left.

Step-by-step explanation:

the last number that 3 goes into before 35 is 33. 33 ÷ 3 = 11. So each friend gets 11 rubbers. then from 33, there will be 2 rubbers left.

5 0
3 years ago
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