3 years ago

I really need help with this ASAP 71 POINTS

1 answer:

8 0

Working is a bit of a mess, but vertically she's correct, but she's incorrect horizontally

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Dominik [7]

2s + 3 = 19
2s = 16
s = 8
He can buy 8 cans of soup.

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3 years ago

iren2701 [21]

Square
Rectangle
Rhombus
Trapezoid
Kite
They all have a four sides

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3 years ago

dimulka [17.4K]

Answer:

a. 4.33.

Step-by-step explanation:

If there is only one correct answer out of four alternatives, the expected proportion of correct answers is p =0.25

Sample size (n) = 100 questions

The standard deviation of a proportion 'p' is given by:

$s=\sqrt{\frac{p*(1-p)}{n} }$

Applying the given data:

$s=\sqrt{\frac{0.25*(1-0.25)}{100}}\\s=0.0433$

If X is the number of correct responses in 100 guesses, the standard deviation of X is:

$\sigma = n*s=100*0.0433\\\sigma = 4.33$

The standard deviation of X is 4.33 questions.

7 0

3 years ago

Katarina [22]

The answer to your question is 3
Reasons : -9+ 3•4= -9+12= 3.

8 0

3 years ago

Arada [10]

Answer:

$3000

Step-by-step explanation:

6000-1000-1500-500= $3000

7 0

2 years ago