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3 years ago

Add (a+b-3)+(b+2a-1)+(4-6b+2a)

Mathematics

2 answers:

igor_vitrenko [27]3 years ago

7 0

5a-4b is the answer

Mariulka [41]3 years ago

4 0

Answer:

$(a + b - 3) + (b + 2a - 1) + (4 - 6b + 2a)$

$a + 2a + 2a + b + b - 6b - 3 - 1 + 4$

$5a - 4b - 4 + 4$

$= 5a - 4b + 0$

$= 5a - 4b$

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mihalych1998 [28]

Answer:

3/8 is #1

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Step-by-step explanation:

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7 0

2 years ago

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Match the numbers in standard notation with the corresponding numbers in scientific notation.

ankoles [38]

Answer:

a) 864,000,000,000 8.64E11

b) 8,640,000,000 8.64E9

c) 86,400,000,000,000 8.64E13

d) 864,000,000,000,000 8.64E14

Step-by-step explanation:

A scientific notation is a way to represent very large values into the decimal form.

Steps to write in scientific notation:

Move the decimal to left before first digit of the given number.

Find the number of times decimal is moved to left.

Put that number in the exponent of e.

So, matching:

a) 864,000,000,000 8.64E11

b) 8,640,000,000 8.64E9

c) 86,400,000,000,000 8.64E13

d) 864,000,000,000,000 8.64E14

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4 years ago

Which of the following would be the most logical first step to solving this

NikAS [45]

Answer:

D is correct option

Step-by-step explanation:

The correct option is D.

The standard quadratic equation is ax²+bx+c=0

Where a and b are coefficients and c is constant.

It means that constant are on the L.H.S and there is 0 on the right hand side.

Therefore to make it a quadratic equation first of all you have to add 11 at both sides so that the R.H.S becomes 0.

The given equation is:

2x2-x+ 2 = -11

If we add 11 on both sides the equation will be:

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Thus the correct option is D

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3 years ago

Simplify the expression completely. 7b+3(4b−2)+6÷3

Karo-lina-s [1.5K]

Answer:

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Step-by-step explanation:

7b+3(4b-2)+6÷3

Bracket comes first so we distribute 3 over the terms in the bracket

= 7b + 12b -6 +6 ÷ 3

First we solve division

= 7b + 12b -6 +6 ÷ 3

= 7b + 12b -6 +2

= (7b+12b)+(-6+2)

= 19b -4

This can't be simplified further as it can't be solved anymore

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3 years ago

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notsponge [240]

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3 years ago

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