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Fantom [35]
3 years ago
12

Simplify.

Mathematics
1 answer:
AURORKA [14]3 years ago
3 0

For this case we must simplify the following expression:

\frac {1} {2} -3 (\frac {1} {2} +1) ^ 2

Then we have to start by solving the operation within the parenthesis:

\frac {1} {2} -3 (\frac {1 + 2 * 1} {2}) ^ 2 =\\\frac {1} {2} -3 (\frac {3} {2}) ^ 2 =\\\frac {1} {2} -3 (\frac {3} {2} * \frac {3} {2}) =\\\frac {1} {2} -3 (\frac {9} {4}) =\\\frac {1} {2} - \frac {27} {4} =\\\frac {4 * 1-2 * 27} {4 * 2} =\\\frac {4-54} {8} =\\\frac {-50} {8} =\\- \frac {25} {4}

ANsweer:

- \frac {25} {4}

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3. What % of 100 is 13?
Sedbober [7]

Answer:

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 13 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 13 is 100%, so we can write it down as 13=100%.

4. We know, that x is 100% of the output value, so we can write it down as x=100%.

5. Now we have two simple equations:

1) 13=100%

2) x=100%

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

13/x=100%/100%

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 100% of 13

13/x=100/100

(13/x)*x=(100/100)*x       - we multiply both sides of the equation by x

13=1*x       - we divide both sides of the equation by (1) to get x

13/1=x

13=x

x=13

now we have:

100% of 13=13

Step-by-step explanation:

Have A Wonderful Day !!

5 0
3 years ago
Which statement about the points (5, 7) and (10, 12) is true?
cluponka [151]

Answer: the answer is C  because it asking does those coordinates pass thru the origin of 0,0

Step-by-step explanation:

5 0
4 years ago
-19.8 &gt; 3.6y<br><br> Can someone help solve this inequality please?
Step2247 [10]
-19.8 > 3.6y

-19.8/3.6 > 3.6y/3.6

-5.5 > y

4 0
3 years ago
1/3 x 1/2<br> PLS PSL eellelele
Darina [25.2K]
1/6
explanation:
1 x 1 = 1
2 x 3 = 6
1/6
Hope it helps!
6 0
3 years ago
Read 2 more answers
0.4(2x+1/2)=3[0.2x+(-2)]-4 solve the equation
melisa1 [442]
0.4(2x+1/2) = 3[0.2x-2]-4
0.8x+0.2 = 0.6x-6-4         Distribute it out
0.8x+0.2 = 0.6x-10          Combine like terms
0.2x = -10.2                     Subtract 0.6x and 0.2 from both sides
x = -51                             Multiply both sides by 5
5 0
4 years ago
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