2 years ago

1. 2x + 2y = 10

Mathematics

1 answer:

liq [111]2 years ago

3 0

Hopefully this helped! I used the substitution method

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A 2-column table with 5 rows titled Length Conversion. Column 1 is labeled Inches, x with entries 2, 4, 7, 10, 13. Column 2 is l

suter [353]

Answer:

a) en cuántas filas la suma es igual?

2+7+2+0+2=13

0+1+6+1+0=8

2+0+2+8+1=13

es igual en dos filas la primera y la última

b)en cuántas columnas la suma es igual?

2+0+2=4

7+1+0=8

2+6+2=8

0+1+8=9

2+0+1=3

es igual en dos columnas la segunda y la tercera

listo :)

Step-by-step explanation:

8 0

2 years ago

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sergey [27]

Answer:

70km per hour is the rate of change

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3 years ago

Imagine a pond. In it sits one lilypad, which reproduces once a day. Each of its offspring also reproduces once a day, doubling

sergeinik [125]

Answer: On the 29th day

Step-by-step explanation:

According to this problem, no lilypad dies and the lilypads always reproduce, so we can apply the following reasoning.

On the first day there is only 1 lilypad in the pond. On the second day, the lilypad from the first reproduces, so there are 2 lilypads. On day 3, the 2 lilypads from the second day reproduce, so there are 2×2=4 lilypads. Similarly, on day 4 there are 8 lilypads. Following this pattern, on day 30 there are 2×N lilypads, where N is the number of lilypads on day 29.

The pond is full on the 30th day, when there are 2×N lilypads, so it is half-full when it has N lilypads, that is, on the 29th day. Actually, there are $2^{30}$ lilypads on the 30th, and $2^{29}$ lilypads on the 29th. This can be deduced multiplying succesively by 2.