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sertanlavr [38]
3 years ago
12

What do u have 2 do to solve

Mathematics
2 answers:
Nastasia [14]3 years ago
8 0
5x^2 + 6x +13.88 is what is is simplified hope it helped a bit 
maxonik [38]3 years ago
4 0
First, rewrite the expression so that it is easier to solve.
5n squared + 13n -7n + 4 + 9.8
= 5n squared + 6n + 13.8
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In a class of 40 students, 5 like neither Nokia nor
STatiana [176]

Answer:

<em><u>The number of students that like only Nokia </u></em>

<h2>= 30</h2>

Step-by-step explanation:

consider N the number of students who like Nokia → N=?

               T the number of students who like Techno → T=35

Statement 1: In a class of 40 students, 5 like neither Nokia nor Techno

we can translate it like this: 35 student like Nokia or Techno

we can note it like this : T∪N= 35

Statement 2: 30 like Techno and Nokia

we can note it : T∩N = 30

using a rule concerning the number of element of a set :

T∪N = N + T - T∩N

then

35 = N + 35 - 30

⇒ N - 30 = 0

⇒ N = 30

7 0
3 years ago
Which expressions are equivalent to the one below? Check all that apply. log2 16 + log2 16 A. log2(28) B. 8 C. log 256 D. log2 2
eduard

Answer:

B. 8.

D.  log2 256.

Step-by-step explanation:

Generally:

loga b + loga b

= loga b^2.

Therefore log2 16 + log2 16

= log2 16^2

= log2 256.

From the above:

256 = 2^x   where x is the log.

Now 2^8 = 256   so the original log2 16 + log2 16 = 8.

3 0
3 years ago
Read 2 more answers
PLSSS HELP IF YOU TURLY KNOW THISS
Vladimir [108]

Answer:

B

Step-by-step explanation:

There is two wholes and one half.

6 0
2 years ago
Help plzz i need help with this question and 9 more in an hourr
REY [17]

Answer:

y=-\cos x

Step-by-step explanation:

The given trigonometric graph is symmetric about the y-axis.

This means it is a cosine function.

The basic is symmetric about the y-axis and has a y-intercept of 1.

Its range is -1\le y\le1

Since the given graph  has y-intercept at -1 with the same range, it is the parent cosine function reflected in the x-axis.

Therefore its equation is y=-\cos x

5 0
3 years ago
Egal loggers got away with 4 acres of trees at a reserve in central Mexico. That number represents a 97 percent decline from two
geniusboy [140]

Answer: with 133.33 acres of trees

Step-by-step explanation:

4 acres of trees, is a 97% decrease of the previous amount.

This means that if the previous amount was X, then 4 acres is 3% (or 0.03 in decimal form) of X, or:

4 acres = 0.03*X

Now we can solve this for X as:

X = 4acres/0.03 = 133.33 acres

The illegal loggers got away with 133.33 acres of trees

6 0
3 years ago
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