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OlgaM077 [116]
2 years ago
12

Helena foi a feira com certa quantia. Gastou metade dessa quantia na banca de frutas e um terço dessa quantia na banca de verdur

as e legumes. Que fração da quantia inicial, sobrou para Helena?
1 ponto
a) cinco sextos
b) um sexto
c) um meio
d) três quintos
Mathematics
1 answer:
Aleonysh [2.5K]2 years ago
5 0

Answer:

english pleas

Step-by-step explanation:

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The perimeter of a rectangle is 90 centimeters. The length is 27 centimeters.
Kisachek [45]

Answer:

width=18cm

Step-by-step explanation:

perimeter= 2(l+b)

90=2(27+b)

90/2=27+b

45-27=b

b=18cm

8 0
3 years ago
What is the recursive rule for an=4n−1? a1=4;an=an−1−1 a1=3;an=an−1+4 a1=−1;an=an−1+4 a1=3;an=an−1−1
navik [9.2K]
Plug in n = 1 into the nth term formula
a(n) = 4n-1
a(1) = 4*1-1
a(1) = 3
So the first term is 3

The second term will be 7 because we add on 4 each time, as indicated by the slope of 4. This is also known as the common difference.

So the nth term is found by adding 4 to the (n-1)st term, in other words,
a(n) = a(n-1)+4

----------------------------------------------------------------------------

In summary, the answer is 
a1=3; an=an-1+4
which is choice B
4 0
3 years ago
Read 2 more answers
-x^4y^2+7x^3y^3-3xy^5+2x^2y^4 in descending powers of x
muminat

Answer:

  -x^4y^2 +7x^3y^3 +2x^2y^4 -3xy^5

Step-by-step explanation:

The powers of x in the terms of the given expression are ...

  4, 3, 1, 2

so, we want to swap the last two terms to put them in the desired order:

  -x^4y^2 +7x^3y^3 +2x^2y^4 -3xy^5

6 0
3 years ago
Samirs bedroom has an area of 48 square feet.
vazorg [7]

Answer: 2 feet

Step-by-step explanation:

3 0
2 years ago
Find all x ∈ Z satisfying each of the following equations.3x = 2 (mod 7)
Vlada [557]

Answer:

7x−3=7k,x=7k+3,k∈ℤ

Step-by-step explanation:

3x ≡ 2 (mod 7)

3 is a solution, since 3×3−2=7.

All solutions are 3+7ℤ

y=3x−2/7=3(x−3)+7/7=3(x−3)/7+1

7x−3=7k,x=7k+3,k∈ℤ

5 0
2 years ago
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