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pochemuha
3 years ago
7

Which expressions are equivalent to 4b

Mathematics
2 answers:
Lena [83]3 years ago
8 0

c and b are your answers

shepuryov [24]3 years ago
3 0

Answer:

b. 3b+b

c.2(2b)

Step-by-step explanation:

Option a is

b+2(b+2b) = b+2(3b) Adding the like terms b and 2b

                    =b+6b

                     =7b

Option b is :

3b+b = 4b (Like terms can be added)

Option c is

2(2b) = 4b. [ 2x2=4]

OPtions b and c both equal 4b.

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Which equation represents the line that is perpendicular to and passes through (-12,6)?.
Evgesh-ka [11]

The equation that represents the line that is perpendicular is

3y + 5x = -42

The standard equation of a line in point-slope form is expressed as:

y-y_1=m(x-x_1)

  • m is the slope of the lne
  • (x1, y1) is any point on the line.

  • Given the equation y = 3/2x + 1, the slope of the line is 3/5

  • The s<u>lope of the line perpendicular</u> is -5/3

Substitute the point (-12, 6) and the slope m = -5/3 into the equation above to have:

y-6=-5/3(x-(-12))\\3(y-6)=-5(x+12)\\3y-18=-5x-60\\3y = -5x - 60 + 18\\3y + 5x = -42\\

Hence the equation that represents the line that is perpendicular is

3y + 5x = -42

Learn more on equation of a line here:brainly.com/question/19417700

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2 years ago
Katie has $7 in a savings account. The interest rate is 5%, compounded annually.
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Answer:

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3 years ago
Which equation has the solution y=2?
antoniya [11.8K]

Answer:

<h2>3y + 2 = 8</h2>

Step-by-step explanation:

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2y - 3 = 19

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