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ioda
2 years ago
14

Need help with da question

Mathematics
1 answer:
Drupady [299]2 years ago
8 0

Answer:

2 9/20

Step-by-step explanation:

9\frac{3}{4}-7\frac{3}{10}\\\frac{39}{4} -\frac{73}{10}\\\frac{39x5}{4x5}-\frac{73x2}{10x2}\\\frac{195}{20}-\frac{146}{20}\\\frac{49}{20}\\2\frac{9}{20}

*I used an x for the multiplication symbol...there's no variable involved in this.  

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1. Considere as funções f e g, ambas com domínio Z, dadas por f(x) = x²- 2x e g(x) = x³-1. Associe as colunas e assinale a alter
ivolga24 [154]

Answer:

(A)C,D,A,B

Step-by-step explanation:

f(x) = x^2- 2x\\g(x) = x^3-1

a) f(-2)

f(-2) = (-2)^2- 2(-2)\\=4-(-4)\\=4+4\\=8$ (C)

b) g(-2)

g(-2) = (-2)^3-1\\\=-8-1\\=-9 $(D)

c) f(-1)+g(3)

f(-1) = (-1)^2- 2(-1)=1+2=3\\g(3) = (3)^3-1=27-1=26\\f(-1) + g(3)=3+26\\=29$ (A)

d) f(5) : g(2)

f(5) = (5)^2- 2(5)=25-10=15\\g(2) = (2)^3-1=8-1=7\\f(5) :g(2)=15/7$ (B)

4 0
3 years ago
Please Help!
Juliette [100K]
Your center would be (3,-4) 
7 0
3 years ago
Read 2 more answers
What two numbers add to equal ten and multiplies to equal negative seven?
lawyer [7]
Okay ShallBeTheLast, what we will do will involve a lot of simple plug and play kind of actions.
To start we must notice one number must be negative and the other should be positive, because the multiplied number is a negative.

Next, lets multiply number that have a sum of 10 (keep in mind one has to be negative and the other has to be positive).

-1 * 10 = -10 false
-2 * 12 = -24 false
-3 * 13 = -39 false
notice that no number working and it's only getting farther away.
There is no solution for this that involves to integers.

I think you might of wrote the question backwards.
If that is the case we would run numbers like.....
-1 * (-6) = 7 false
-2 * (-5) = 10 true!!!!

-2 and -5 would work
4 0
4 years ago
Which statements are true about the ordered pair (−1, 5) and the system of equations?
Ira Lisetskai [31]

Answer:

you answer would be A,B,D there all the answer u cant just have one also I  just took the test im from k12

6 0
3 years ago
What is 30/95 in simplest form
Drupady [299]

Answer:

30/95

Step-by-step explanation:

because 95 cant be split

4 0
4 years ago
Read 2 more answers
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