1 year ago

W

Mathematics

1 answer:

algol [13]1 year ago

6 0

Answer:jio

Step-by-step explanation:

You might be interested in

Work out the value 3x10^-5 x 40,000,000 give you answer in standard form

Olenka [21]

<u>★ Solution:</u>

➣ ${\sf{3\:x\:10^{-5}\:x\:4\:x\:10^7$

➣ ${\sf{(3\:x\:4)\:x\:(10^{-5+(-7)})$

➣ ${\sf{12\:x\:10^2$

➣ ${\sf{1.2\:x\:10^3$

3 0

2 years ago

Which of the following numbers represents 8/9 to the nearest percent?

schepotkina [342]

The number that represents 8/9 to the nearest percent is .89

5 0

2 years ago

Select the correct answer.

MrRissso [65]

Answer:

C. 309 cm2

Step-by-step explanation:

A=2(1+sqr2)a^2

A=2(1+sqr2)8^2

≈309.01934

3 0

2 years ago

Evaluate the variable expression using the given values for the variable.

bixtya [17]

9514 1404 393

Answer:

Step-by-step explanation:

Put the values where the variables are and do the arithmetic.

3ab +b = 3(9)(2) +2 = 56

4 0

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

3 0

2 years ago