All categories

3 years ago

C. Are 2b + b and 3b equivalent expressions

Mathematics

2 answers:

lyudmila [28]3 years ago

6 0

Answer:

The answer is No they are not equvalient expression

Step-by-step explanation:

please mark as brailist

Alecsey [184]3 years ago

4 0

Answer: Yes

Step-by-step explanation:

Imagine you have b = 2.

Plug 2 into the equation 2b + b = 3b

You get: 2(2) + 2 = 3(2)

Which solves to be 6 = 6

As long as the variable is the same, in this case b, and they are to the same power, in this case ^1, you can combine them.

You might be interested in

The coffee Lily likes is composed of 97.3% water and 2.7% cocoa. The coffee John likes is composed of 96% water and 4% cocoa. Ho

mestny [16]

30 ounces of the coffee John likes consists of

$0.96\cdot30=28.8$ ounces of water
$0.04\cdot30=1.2$ ounces of cocoa

To this mixture we're adding $x$ ounces of water, so that the new mix has a total volume of $30+x$ ounces and matches the composition of the coffee Lily likes. This means it would consist of

$0.973\cdot(30+x)=28.8+x$ ounces of water
$0.027\cdot(30+x)=1.2$ ounces of cocoa (same amount of cocoa as before because pure water is being added)

Solve for $x$ :

$0.973(30+x)=28.8+x\implies29.12+0.973x=28.8+x$

$\implies0.39=0.027x$

$\implies x\approx14.4$

###

Just to confirm: the new mixture consists of

$28.8+14.4=43.2$ ounces of water
$1.2+0=1.2$ ounces of cocoa

giving a total volume of $43.2+1.2=44.4$ ounces of coffee, and $\dfrac{43.2}{44.4}\approx0.973$ , as required.

4 0

3 years ago

Which expression is equivalent to the given expression after using the distributive property?

Jobisdone [24]

Answer:

Last one I think

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Someone plz help me

babunello [35]

Okay lets start with "what is a kite?" A kite is a shape which has 4 sides of which 2 pairs of two sides are equal and the center angle is 90 degrees. So mark up your drawing with tick marks to show that segment DF and segment FG are equal (just put a little tick mark on those segments). Similarly segments DH and GH are equal so put two tick marks on them to show they are equal. Mark the center angle with a little square to show it is 90 degrees. Let me give you some hints on the answers. a. is given like you have b. is what you marked on your drawing and is the definition of a kite e. is definition of congruency or even substitution f. Reflexive property - remember it just says that something is congruent to itself. g. looks like the HL property h. you can say that because of CPCTC.

5 0

3 years ago

What is 0.8 repeating times 88

vichka [17]

$0.\overline{8}=\dfrac{8}{9}\\\\0.\overline{8}\cdot88=\dfrac{8}{9}\cdot88=\dfrac{704}{9}=78.\overline{2}$