PLEASE HELP ASAP 5 STARS, 20 POINTS

Mathematics

2 answers:

777dan777 [17]3 years ago

7 0

Answer:

Step-by-step explanation:

Using the inequality rule, the third side has to be less than 12 + 16 = 28.
So, any answer of 28 or more than 28 does NOT satisfy the length.
It also has to be more than 4 to satisfy the inequality rule.

In short words, 4 < x < 28.

A, B and C all satisfy, because they are in the range of x

D) 32 is >28, so this is the wrong answer and CANNOT be the value of x.

Gelneren [198K]3 years ago

4 0

Answer:

Step-by-step explanation:

Any number between 16 - 12 = 2 and 16 + 12 = 28 are possible.

Among given choices, only 32 is not in the above region. so 32 CANNOT be the value.

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djyliett [7]

Answer: Choice B)

Here's why:

Focus on right side only. We have (n+8)(n+5).

Let's use FOIL to expand that out

F = first means we multiply the first terms n and n to get n^2
O = outer tells us to multiply the outer terms n and 5 to get n*5 or 5n
I = inner tells us to multiply the inner expressions 8 and n to get 8n
L = last meaning we multiply 8 and 5 to get 8*5 = 40

Add up those results: n^2+5n+8n+40 = n^2+13n+40

Notice how the like terms (5n and 8n) combine to have the expression simplify a bit.

This shows how (n+8)(n+5) turns into n^2+13n+40, which is why choice B is the answer. The other choices aren't true equations for all values of n.

7 0

4 years ago

Read 2 more answers

Will mark brainliest answer!! 50 points!! pls help!!

Afina-wow [57]

Answer:

1. Ben

Let the number of days be x.

Let the total no. of shares be y

$No.\ of\ shares\ on\ Day\ 0=2\\No.\ of\ shares\ on\ Day\ 1\ = 2*3\\No.\ of\ Shares\ on\ Day\ 2\ =\ 2*3*3\\No.\ of\ Shares\ on\ Day\ 3\ = 2*3*3*3\\No.\ of\ Shares\ on\ Day\ x\ =2*3^x\\As\ Total\ no.\ of\ shares\ = y\\y=2*3^x$

2. Carter

Let the no. of days be x

Let the total no. of shares be y

$No.\ of\ shares\ on\ Day\ 0=10\\No.\ of\ shares\ on\ Day\ 1\ = 10*2\\No.\ of\ Shares\ on\ Day\ 2\ =\ 10*2*2\\No.\ of\ Shares\ on\ Day\ 3\ = 10*2*2*2\\No.\ of\ Shares\ on\ Day\ x\ =10*2^x\\f(y)=10*2^x$