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taurus [48]
3 years ago
6

Adding Rational Expressions

Mathematics
2 answers:
Elanso [62]3 years ago
7 0
Adding what rational expressions?
allsm [11]3 years ago
7 0
See picture reply. I hope you can follow.

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Joshua saves £12 a week in a saving account. How much will he save in one year?
Tcecarenko [31]

Answer:

£624

52 weeks in a year 52 x 12

4 0
3 years ago
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In which situation below would you want to use the Explicit Formula instead of the Recursive Formula?
Luden [163]

9514 1404 393

Answer:

  all of them, possibly excepting the 4th term

Step-by-step explanation:

The recursive formula is good if you have terms near the one of interest. It might be used for the 4th term, but that would require that you compute the three previous terms:

  7, 5, 3, 1 . . . . requires 3 subtractions

It can be about as easy to calculate ...

  a4 = 7 -2(3) = 1 . . . . requires two* subtractions and a multiplication

__

However, for the 7th, 11th, and 106th terms, it is impractical to list all previous terms. The explicit formula is a better choice.

A.  a4 = 7 -2(3) = 1

B.  a7 = -1 +10(6) = 59

C.  a106 = 2 +5(105) = 527

D.  a11 = -3 +4(10) = 37

_____

* The explicit formula is ...

  an = a1 +d(n -1)

The operations identified in this formula (in the order required by the Order of Operations) are subtraction, multiplication, and addition. For a negative common difference, that amounts to two subtractions and a multiplication.

For manual evaluation, the work involved in using the recursive or explicit formulas for the 4th term is about the same, if the arithmetic is easily done mentally (as here).

5 0
2 years ago
Andy is buying carpet squares for his living room. the length of the room is 20 feet, and the width is 16 feet. each carpet squa
Aliun [14]
C.80 its area you just have to multiply
3 0
3 years ago
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Seven increased by the product of two numbers <br> Seven increased by the product of two numbers
kipiarov [429]

The answer would be 7+x*x the variables stand for the 2 unknown numbers and the product is the * symbol. Increased stands as the plus symbol. Hope this helps!

6 0
3 years ago
Read 2 more answers
18 cm
attashe74 [19]

Answer

720π cm²

Step-by-step explanation:

Surface area of cylinder

A=2πr(s+r)

for r=12cm, s=18cm

A= 2π×12(12+18)

=24π×30

=720π

5 0
2 years ago
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