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Ber [7]
3 years ago
7

PLS HELP ASAP!! I GIVE THANKS!

Mathematics
1 answer:
Yanka [14]3 years ago
7 0
The correct answer is A. The commutative property says that we can swap number when we add. More exactly... it means that a+b=b+a => -13+27=27+(-13)= 14
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The probability of winning on an arcade game is 0. 659. if you play the arcade game 30 times, what is the probability of winning
mrs_skeptik [129]

The probability of winning exactly 21 times is:-0.32

Given,

The probability of winning on an arcade game, p = 0.659

Number of times you play arcade game, n = 30

By assuming this as a normal distribution, we get

Mean=μ=30×0.659 =19.77

Standard deviation, σ = \sqrt{np(1-p)}

= \sqrt{30(0.659)(1-0.659)}

≈ 2.60

Let X be a binomial variable

Then, the z score for x = 21 will be:

z = (x - μ) / σ = \frac{21-19.77}{2.60}

≈ 0.47

Now, the probability of winning exactly 21 times

P (x ≥ z) = P (21 ≥ 0.47) = 0.32

Hence the probability of winning exactly 21 times is 0.32

Learn more about probability here:-brainly.com/question/13067945

#SPJ4

                         

5 0
2 years ago
40 is 20 of what number
AleksAgata [21]

\huge\text{Hey there!}

\large\text{40 is 20\% of what time number?}\\\\\\\bullet \large\bold{We\ are\ looking\ for\ your\ UNKNOWN\ number; we\ can\ the\ value}\\\large\bold{is\ \underline{a}\ for\ our\ answer!}\\\bullet\large\bold{REMEMBER: Percentages\ are\ out\ 100\ \& the\ word\ \underline{of}\ means\ \underline{multiply}}

\huge\text{NOW LETS SOLVE FOR YOUR ANSWER!}

\bold{Equation: 20\%\  \times \ a\ =\ 40}\\\\\bold{a = \dfrac{40}{20\%}}}\\\\\bold{20\% = \dfrac{20}{100}\rightarrow 0.2}}}\\\\\bold{Equation: a = \dfrac{40}{0.2}}\\\\\bold{\dfrac{40}{0.2}=200}\\\\\bold{a=200}\\\\\boxed{\boxed{\bold{Answer: 200}}}\huge\checkmark

\large\textsf{Good luck on your assignment and enjoy your day!}

~\frak{Amphitrite1040:)}

7 0
3 years ago
A pizza is cut into eight slices the slices are all the same size Carolina ate 2 slices what fraction of the pizza did Carolina
WINSTONCH [101]
If there is a total of 8 slices, and Carolina ate 2 of them, then she ate 2/8 which reduces to 1/4 of the pizza
7 0
3 years ago
50 POINTS! WILL MARK BRAINLEST! NEED IN 10 - 15 MINUTES!
masha68 [24]

Answer:

21

(2,14)

14/2=7

14+7=21

21 is final answer

Erika had a 95% chance of guessing wrong

20 can be seen as 100%

the % will go down by 5's because of the original number

.5*20=

This will give you a 95% success rate.

7 0
3 years ago
Answer it pls and no memes
aev [14]

Answer:

There's two of them, of which are the 3rd and 5th option

Step-by-step explanation:

The formula for calculating a prism is <em>length</em> times <em>width, </em>times the height because it is a 3d object. <em>Length</em> times <em>width</em> is the same as B(base), so those two are the exact same. Don't let that fool you.

Here's a little abstract context:

You've got one loaf of bread right? Well, pretend it's 3 inches by 4 inches. You have one slice, one layer, with 12 inches squared as its area. To make it a loaf, you stack the layers up by multiplying that slice of bread by the value of h.

5 0
3 years ago
Read 2 more answers
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