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Tamiku [17]
3 years ago
11

It is difficult to change how good I am at math even if I try hard and practice a lot.

Mathematics
2 answers:
natulia [17]3 years ago
8 0

Answer:

                                                                         

Step-by-step explanation:                                                          

vodomira [7]3 years ago
5 0

Answer:

B

Step-by-step explanation:

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Given the Arithmetic series A1+A2+A3+A4
natali 33 [55]

Answer:

S _{19}  = 760

Step-by-step explanation:

a1 = 13 \\ a2 = 16 \\ d = a2 - a1 = 16 - 13 = 3 \\ d = 3 \\ a _{n}  =  l = 67 \\

now,

a _{n} = a + (n - 1) \times d \\ 67 = 13 + (n - 1) \times 3 \\ 67 = 13 + 3n - 3 \\ 67 - 13  + 3 = 3n \\ 57 = 3n \\ 3n = 57 \\  \\ n =  \frac{57}{3}  \\  \\ n = 19

now the sum of the numbers

S _{n} =  \frac{n}{2} (a + l) \\  \\ S _{19}  =  \frac{19}{2}   (13 + 67) \\  \\ S _{19}  =  \frac{19}{2} (80) \\  \\ S _{19}  =  \frac{19}{2}  \times 80 \\  \\ S _{19}  = 19 \times 40 \\ S _{19}  = 760

8 0
3 years ago
Write a<br> rule that could be used to simplify the square of any square root of a number.
Vlada [557]
Product rule- the first rule for simplifying square roots, which allows us to separate the square root of a product of two numbers into the product of two separate rational expressions


HOPES THIS HELP :)
5 0
3 years ago
What is the first step toward reconciling your checkbook register?
maks197457 [2]

Answer:

You need to record interest earned :)

Step-by-step explanation:

Hope it helps :)

7 0
3 years ago
If angle m=25 and angle l=25 find jkm
suter [353]

Answer:

130

Step-by-step explanation:

25+25 = 50

180-50=130

4 0
4 years ago
Read 2 more answers
Someone please help me please
zaharov [31]

Graph

-2x+y\ge-2

Procedure

3 0
2 years ago
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