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3 years ago

Im a little confuse on this so i will need some help please!

Mathematics

2 answers:

Scorpion4ik [409]3 years ago

6 0

Answer:

The answer is C.

If I'm wrong, then I'm sorry- but have a wonderful day though!

deff fn [24]3 years ago

4 0

Answer:

Step-by-step explanation:

At least 2 heads means it cold have 2 heads or 3 heads

Count how many posibilities to have 2H or 3H are there

HHH, HHT, HTH, THH they are 4 posibilities

the probability to have at list 2 heads is

P = #of 2H and 3H / #of all outcomes = 4/ 8 = 1/2

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liberstina [14]

Answer:

The system has an infinite set of solutions $(x,y) = (x, \frac{x-5}{4})$

Step-by-step explanation:

From the first equation:

$20x - 80y = 100$

$20x = 100 + 80y$

$x = \frac{100 + 80y}{20}$

$x = 5 + 4y$

Replacing on the second equation:

$-14x + 56y = -70$

$-14(5 + 4y) + 56y = -70$

$-70 - 56y + 56y = -70$

$0 = 0$

This means that the system has an infinite number of solutions, considering:

$x = 5 + 4y$

$4y = x - 5$

$y = \frac{x - 5}{4}$

The system has an infinite set of solutions $(x,y) = (x, \frac{x-5}{4})$

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3 years ago

Can anyone help me with my homework

DIA [1.3K]

GFBH is the code

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3 years ago

A number increased by 7

postnew [5]

Answer:

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Step-by-step explanation:

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3 years ago

What is the percent change from 57 to 12

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Answer:

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3 years ago

Emma needs to divide 7 by 1/2. Which strategy can Emma use to get the answer?

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Answer:

Step-by-step explanation:

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3 years ago