2 years ago

Expand 2x(3x + 2y) ASAP

2 answers:

7 0

2x(3x)+2x(2y) this answer cannot be logically simplified because it has variables that can not be multiplied, it is a binomial.

CaHeK987 [17]2 years ago

6 0

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The equation that models the current water temperature t of the swimming pool is t -6=78 which best describes the error made whe

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78! is the answer to this question! trust! -6

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1 year ago

gabriel saves 40% of his monthly paycheck for collage. he earned $270 last month.how much money did gabriel save for collage

rusak2 [61]

The best thing to do is to find 10%, and you can do this by dividing $270 by 10, and therefore, $27 is equal to 10%. To find 40%, you've got to multiply $27 by 4, and this gives you $108. Therefore, gabriel saved $108 last month :)
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3 years ago

At the time she had $237 ,the cost of a lesson rose to &19.how many lesson can she pay for with remaining &237

ad-work [718]

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2 years ago

Suppose a research firm conducted a survey to determine the average amount of money steady smokers spend on cigarettes during a

olchik [2.2K]

Answer:

option (b) 0.0228

Step-by-step explanation:

Data provided in the question:

Sample size, n = 100

Sample mean, μ = $20

Standard deviation, s = $5

Confidence interval = between $19 and $21

Now,

Confidence interval = μ ± $z\frac{s}{\sqrt n}$

thus,

Upper limit of the Confidence interval = μ + $z\frac{s}{\sqrt n}$

$21 = $20 + $z\frac{5}{\sqrt{100}}$

z = 2

Now,

P(z = 2) = 0.02275 [From standard z vs p value table]

P(z = 2) ≈ 0.0228

Hence,

the correct answer is option (b) 0.0228

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2 years ago

Plsss helppp I’ll mark you brainliest!!!!!!!!

Ronch [10]

Answer:

I think the answer is 26.5

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2 years ago