All categories

2 years ago

Which expressions are equivalent to 4b

Mathematics

2 answers:

Lena [83]2 years ago

8 0

c and b are your answers

shepuryov [24]2 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.

You might be interested in

Identify the equivalent expression for each of the expressions below (m1/3 m1/5)^0

Eva8 [605]

Answer:

Step-by-step explanation:

everything rise 0 power is 1.

8 0

2 years ago

7x - 22 = 41<br> Im having trouble with this problem

Charra [1.4K]

Answer:

x = 9

Step-by-step explanation:

............................

6 0

2 years ago

Read 2 more answers

ABC bank requires a 20% down payment on all of its home loans if a house is priced at 185000 what is the amount of the down paym

Alekssandra [29.7K]

It would be 37’000 because 20% of 185000 is 37’000 which you get by 20 x 185000 and dividing the answer to 100.

3 0

2 years ago

The length of a rectangular flower bed is 2ft longer than the width. If the area is 6ft, then what are the exact length and widt

Marizza181 [45]

Answer:

Exact dimensions:

$width=-1+\sqrt{7}$

$length=-1+\sqrt{7}+2$

$length=1+\sqrt{7}$

Approximate dimensions:

$width=1.64575ft$

$length=1.64575+2$

$length=3.64575ft$

Step-by-step explanation:

Let's assume width of rectangle is w ft

The length of a rectangular flower bed is 2ft longer than the width

so,

length =w+2

$L=w+2$

now, we can find area

$A=L\times W$

now, we can plug it

$A=(w+2)\times w$

$A=w^2+2w$

we are given area =6

so, we can set it equal

and then we can solve for w

$w^2+2w=6$

$w^2+2w-6=0$

we can use quadratic formula

$ax^2+bx+c=0$

$x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

now, we can compare and find a,b and c

a=1 , b=2 , c=-6

$w=\frac{-2\pm \sqrt{2^2-4\cdot \:1\left(-6\right)}}{2\cdot \:1}$

$w=-1+\sqrt{7},\:w=-1-\sqrt{7}$

we know that dimension can never be negative

so, we will only consider positive value

Exact dimensions:

$width=-1+\sqrt{7}$

$length=-1+\sqrt{7}+2$

$length=1+\sqrt{7}$

Approximate dimensions:

$width=1.64575ft$

$length=1.64575+2$

$length=3.64575ft$

7 0

3 years ago

Asim is going to cover the path with paving

leonid [27]

Answer: £210

Step-by-step explanation:

you do the cm they given you so if it’s 630cm x 120cm = 75,600

30cm x 30cm = 900cm

75,600 divided by 900 = 84

£2.50 x 84 = £210

5 0

2 years ago