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2 years ago

-8=-5+x+9 what are the steps to this equation?

Mathematics

1 answer:

ryzh [129]2 years ago

5 0

Answer:

Step-by-step explanation:

you want to calculate what you have on the x side first so

-8=-5+x+9. (-5+9=4)

-8=4+x

when you get to this step you want to move the 4 to the other side so it becomes (when a number is moved to the other side of the equation it becomes its opposite so if its a negative it becomes a positive)

-8-4=x

therefore x= -12

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Step-by-step explanation:

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3 years ago

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Answer:

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3 years ago

The 10th term of an a.p is -27 and the 5th term is -12 .find the first term?

horsena [70]

Step-by-step explanation:

$a_{10} = - 27... (Given) \\\\\therefore a + 9d = - 27...... (1)\\\\a_{5} = - 12... (Given) \\\\\therefore a + 4d = - 12.......(2)\\\\$

Subtracting equation (2) from equation (1)

$a + 9d-( a + 4d )= - 27-(-12)\\\\\therefore a +9d - a-4d = - 27+12\\\\\therefore 5d = - 15\\\\\therefore d = \frac {- 15}{5}\\\\\huge \orange {\boxed {\therefore d = -3}} \\\\$

Substituting d = - 3 in equation (1), we find:

$a + 9\times (-3)= - 27\\\\\therefore a - 27 = - 27\\\\\therefore a = 27- 27\\\\\huge \red {\boxed {\therefore a = 0}}\\\\$

Hence, first term is zero.

3 0

3 years ago

Please help!!! I really don’t get this only I get where the 3 are but please help me for the 4/5 and -0.4!

Naily [24]

Answer:

-0.4 should be in between 0 and -0.5, however be as close to -0.5 as possible while not being ON -0.5.

3 4/5 should be in between 3 and 4, so you can split 4/5 into 8/10 which are equal to each other. Then you can pretend to split the 3 and 4 gap into 10 equal pieces. After you split the gap, count 8 parts to the left of 3.

Step-by-step explanation:

I hope you understand what I mean.

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3 years ago