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3 years ago

DO U WANT TO GET BRAINLYEST

Mathematics

1 answer:

elena-s [515]3 years ago

3 0

Answer: 198m^2; the first option is correct

Step-by-step explanation:

Surface area of a rectangular prism =A=2(wl+hl+hw)

Where w is width, given as 6m

h is the height, given as 9m

l is the length, given as 3m

Slot the values into the formula;

A= 2 ( (6×3) + (9×3) + (9×6) )

A= 2 ( 18 + 27 + 54)

A= 2 (99).......multiply 2 by 99

A= 2 x 99 = 198m^2

You might be interested in

Simplify using the horizontal method. (3n^2+5n+4)(2n-3)

erica [24]

(3n^2 + 5n + 4)(2n - 3)
= 6n^3 + 10n^2 - 9n^2 + 8n - 15n - 12
= 6n^3 + n^2 - 7n - 12

4 0

4 years ago

Read 2 more answers

for every girl taking classes at the martial arts schools there are 3 boys who are taking classes at the school. if there are 23

Yuliya22 [10]

You have to be very careful how you set this up. For every girl (who counts as 1) there are 3 boys (who count as 3). The total number in the proportion is 3 + 1 =4. You are given a total, but that is both boys and girls. That's why you need the 4.

3/4 = x / 236 Cross multiply

4x = 3 * 236

4x = 708 Divide by 4

x = 708/4

x = 177

There are 177 boys at the school and 236 - 177 = 59 girls.

3 0

3 years ago

<img src="https://tex.z-dn.net/?f=%5Csqrt%7B6%7D%2B%5Csqrt%7B6%7D" id="TexFormula1" title="\sqrt{6}+\sqrt{6}" alt="\sqrt{6}+\sqr

victus00 [196]

Answer:

$2\sqrt{6}$

Step-by-step explanation:

$\sqrt{6} +\sqrt{6} =2\sqrt{6}$

5 0

3 years ago

Read 2 more answers

At a local sandwich shop the average customer spends $25 at dinner with a standard deviation of $2.30. In a simple random sample

oee [108]

Answer:

The probability that the mean receipt for dinner is between $24.50 and $25.50 is

P(24.50≤ x ≤ 25.50)= 0.8324

Step-by-step explanation:

<u><em>Step(i)</em></u>:-

Given mean of Population(μ) = $25

Given standard deviation of the Population (σ) = 2.30

Sample size 'n' = 40

Let 'X' be the random variable in normal distribution

Given X₁ = 24.50

$Z_{1} =\frac{x-mean}{\frac{S.D}{\sqrt{n} } } = \frac{24.50-25}{\frac{2.30}{\sqrt{40} } } = -1.375$

Given X₂ = 25.50

$Z_{2} =\frac{x-mean}{\frac{S.D}{\sqrt{n} } } = \frac{25.50-25}{\frac{2.30}{\sqrt{40} } } = 1.3751$

The probability that the mean receipt for dinner is between $24.50 and $25.50

P(x₁≤ x ≤ x₂) = P(Z₁≤ z ≤ Z₂) = A(Z₂) + A(z₁)

P(24.50≤ x ≤ 25.50) = P(-1.375≤ z ≤ 1.375) = A(1.375) + A(1.375)

P(24.50≤ x ≤ 25.50)= 2 A( 1.375)

= 2 × 0.4162 ( from normal table)

= 0.8324

<u><em>Final answe</em></u>r:-

The probability that the mean receipt for dinner is between $24.50 and $25.50 is 0.8324

4 0

3 years ago

1 ejemplo en donde se aplique las medidas de tendencia central (moda, media y mediana)

Mamont248 [21]

An example of a situation where the measures of central tendency can be applied is when analyzing the test scores of a Math exam taken by 11 people.

<h3>What is an example of measures of central tendency in use?</h3><h3 />

Assuming that 11 people took a Math exam that was graded out of 20 and got the results:

6, 8, 9, 10, 10, 14, 15, 15, 15, 18, 18

The median in this set would be 14. This would therefore show us what the person with the middle score got which is useful in knowing the whether people were above the middle score, or below it.

The mode in this dataset is 15 which shows that 15/20 was the score that was most acquired by people who took the exam.

The mean is:

= (6 + 8 + 9 + 10 + 10 + 14 + 15 + 15 + 15 + 18 + 18) / 11

= 12.5

On average therefore, people got a score of 12.5 in this example. This gives an overall view of the difficulty of the exam.

Find out more on the measures of central tendency at brainly.com/question/17631693

#SPJ1

5 0

2 years ago