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postnew [5]
3 years ago
15

Subtract the following using horizontal method i.)2x from-5x ii.)-5a from 18a

Mathematics
2 answers:
Lena [83]3 years ago
6 0

Answer:

\huge{ \boxed{ \text{ i. \:  \ - 7x}}}

\huge{ \boxed{ \text{ii. \:  23a}}}

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☄ Question : Subtract the following using horizontal method :

  • i. 2x from -5x
  • -5a from -18a

✎ Step - by - step Explanation :

  • 2x from -5x

In horizontal method , terms are arranged in same row and put sign for subtraction and remove the brackets and then simplify.

\longrightarrow{ \sf{ - 5x - (2x)}}

\longrightarrow{ \sf{ - 5x - 2x}}

Like terms can be added or subtracted. Only coefficients of like terms can be added or subtracted.

\longrightarrow{  \boxed{\sf{ - 7x}}}

Likewise , Let's do next too:

  • -5a from 18 a

\dashrightarrow{ \sf{  18a - ( - 5a)}}

Remember : \sf{( - ) \times (  - ) = (  + )}

\dashrightarrow{ \sf{ 18a + 5a}}

\dashrightarrow{ \boxed{ \sf{ 23a}}}

And we're done!

Hope I helped!

Have a wonderful time ツ

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Dmitry [639]3 years ago
3 0

Answer:

i)-7x ii)23a

Step-by-step explanation:

i)U well get -5x-2x, after solving, u well get -7x since all is negetive. ii)U well get 18a-(-5a) which u well get 18a+5a whict is equal to 23a

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Step-by-step explanation:

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3 years ago
If sinA =3/5 and A+B =90 find cosB
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Used:\\\\\cos(x+y)=\cos x\cos y+\sin x\sin y\\\\\cos90^o=0,\ sin90^o=1

Other method:

Look at the picture.

\sin\theta=\dfrac{opposite}{hypotenuse}\\\\\sin A=\dfrac{3}{5}\to opposite=3\ and\ hypotenuse=5

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8 0
3 years ago
What is the area of the sofa pictured?
Mademuasel [1]

Answer:

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Step-by-step explanation:

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3 years ago
Read 2 more answers
Ed is a car salesman. he makes 1.5% commission on each car he sells. if he made $397.50 on the last car he sold,find the sales p
pentagon [3]

Answer:

$26,500.

Step-by-step explanation:

It is given that Ed is a car salesman. he makes 1.5% commission on each car he sells.

He made $397.50 on the last car he sold.

We need to find the sales price of the car.

Let x be the selling price of the car.

1.5% of x = $397.50

x\times \dfrac{1.5}{100}=397.50

0.015x=397.50

Divide both sides by 0.015.

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kifflom [539]

Answer:

<u>I</u><u>t</u><u> </u><u>i</u><u>s</u><u> </u><u>1</u><u>0</u><u>√</u><u>2</u>

Step-by-step explanation:

=  \sqrt{200}  \\  =  \sqrt{2 \times 100}  \\  = ( \sqrt{2} ) \times ( \sqrt{100} ) \\  =  \sqrt{2}  \times 10 \\  = 10 \sqrt{2}

8 0
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