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3 years ago

Which expression is equivalent to b+b+b+b

Mathematics

2 answers:

Elenna [48]3 years ago

6 0

B+b+b+b=4b...............

frez [133]3 years ago

4 0

I think you forgot to put the options but it would be 4b

hope this helps you!

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1) (x - 2)/(x - 3) + (3x - 11)/(x - 4) = (4x + 13)/(x + 1)

mote1985 [20]

Step-by-step explanation:

or,(x-2)(x-4)+(3x-11)(x-3)/(x-3)(x-4)=(4x+13)/(x+1)

or,x^2-4x-2x+8+3x^2-9x-11x+33/x^2-4x-3x+12=(4x+13)/(x+1)

or,4x^2-4x-2x-9x-11x+8+33/x^2-7x+12=(4x+13)/(x+1)

or,4x^2-26x+41/x^2-7x+12=(4x+13)/(x+1)

or, (x+1)(4x^2-26x+41)=(4x+13)(x^2-7x+12)

or,4x^3-26x^2+41x+4x^2-26x+41=4x^3-28x^2+48x+13x^2-91x+156

or,-26x^2+4x^2+28x^2-13x^2+41x-26x-48x+91x=156-41

or,-7x^2+58x=115

or,-7x^2+58x-115=0

or,-(7x^2-58x+115)=0

or,7x^2-58x+115=0

or,7x^2-(35+23)x+115=0

or,7x^2-35x-23x+115=0

or,7x (x-5)-23 (x-5)=0

or, (x-5)(7x-23)=0

Either, Or,

(x-5)=0 (7x-23)=0

or,x=0+5 or,7x=23

:x=5 :x=23/7

Hence,x=5 or 23/7

7 0

3 years ago

Louis's mother sent him to the grocery store with $20. she told him to purchase a 16 oz tub of cream cheese and use the rest of

Kruka [31]

Answer:

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Simplify 6x/10x2\6/10x3-60x2<br> A.x-6<br> B.x-4<br> C.4<br> D.x-1

Anna71 [15]

Answer:

A. x-6

Step-by-step explanation:

Maybe you want to simplify ...

((6x)/(10x^2))/(6/(10x^3 -60x^2))

Invert and multiply. Cancel common factors from numerator and denominator.

$\dfrac{\left(\dfrac{6x}{10x^2}\right)}{\left(\dfrac{6}{10x^3-60x^2}\right)}=\dfrac{6x}{10x^2}\cdot\dfrac{10x^3-60x^2}{6}=\dfrac{6\cdot10x^2}{6\cdot10x^2}(x-6)\\\\=\boxed{x-6}$

3 0

4 years ago

Find the area of a trapezoid h= 4 b1= 1 1/2 b2 = 3 1/2

nlexa [21]

Answer:

Step-by-step explanation:

a= base 1 (1.5)

b= base 2 (3.5)

h= height (4)

$A=\frac{a+b}{2}h=\frac{1.5+3.5}{2} 4$

6 0

3 years ago

What is the solution to = n/4 -12.4?

aleksandr82 [10.1K]

Answer:

I need the rest of the question

Step-by-step explanation:

Sorry I want to help you but I cant unless there is a (example): 12+-3= n/4 -12.4

or a list of options to choose from like what will equal 6? A.2 B.3 C.100 D.9

if you give me the rest I can solve, thanks :)

7 0

3 years ago