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3 years ago

0.21212121... as a fraction

Mathematics

1 answer:

Romashka [77]3 years ago

4 0

Answer : 21212121/ 100000000

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Hey please help me , this is my exam

Ira Lisetskai [31]

Answer:

B) 5

Step-by-step explanation:

f(-2) = (-2)² + 5•(-2) +11

f(-2) = 4 -10 +11

f(-2) = 5

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3 years ago

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Can someone help me?

Papessa [141]

Answer:

$2x - 2y = 24 \\ 2(x - y) = 24 \\ x = 12 + y......eq(1) \\ 4x + 7y = - 40......eq(2) \\ substituting \: the \: value \: of \: x \: in \: eq(2) \\ 4(12 + y) + 7y = - 40 \\ 48 + 4y + 7y = - 40 \\ 11y = - 40 - 48 \\ y = \frac{ - 88}{11} \\ y = - 8 \\ putting \: the \: value \: of \: y \: im \: eq(1) \\ x = 12 - 8 \\ = 4$

Step-by-step explanation:

3x-2y=24......eqi

x+2y=48........eqii

now solving eq i&ii

4x=72

x=72/4

x=18

now putting the value of x in eqii

18+2y=48

2y=48-18

y=30/2

y=15

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3 years ago

HELP!!!.....I’m stressed

yuradex [85]

Answer:

It's between C and D.

But when you closely look at the two answer choices, it is C.

Step-by-step explanation:

In D, the angle AC∠ is too small and it can be automatically crossed out. As well as A and B.

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4 years ago

Quiz

sweet [91]

Answer:

9 points

Step-by-step explanation:

4 points in first half + 5 points in second half = 9 points total in the entire game.

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Becas goal is to practice piano for 20 minutes for every 5 minutes of lesson she takes if she takes a 20 minute piano lesson thi

Eduardwww [97]

Answer:

This week Beca will practice for 80 minutes for her 20 minutes piano lessons.

Step-by-step explanation:

Duration of Beca's practice for every 5 minutes lessons = 20 minutes

Duration of Beca's practice if she take 1 minute piano lesson:

$\frac{20 min}{5} = 4 minutes$

So, duration of Beca's practice if she takes 20 minutes of piano lessons:

$20\times 4minutes=80 minutes$

This week Beca will practice for 80 minutes for her 20 minutes piano lessons.

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3 years ago