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3 years ago

Find the surface area No link please and thank you

Mathematics

1 answer:

Eddi Din [679]3 years ago

5 0

Answer:

1200 in^2

Step-by-step explanation:

SA = 2B + Ph

SA = 2(8 * 15 / 2) + 40(27)

SA = 1200

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1. Find the equation of a line passing through the points (1,-2) and (-3,10).

liraira [26]

Answer:

Step-by-step explanation:

(1 , -2) x₁ =1 & y₁ = -2

(-3,10) x₂= -3 & y₂ = 10

First we need to find the slope.

$\boxed{Slope = $\dfrac{y_{2}-y_{1}}{x_{2}-x_{1}}$}$ $\boxed{Slope=\dfrac{y_{2}-y_{1}}{x_{2}-x_{1}}}$

$=\dfrac{10-[-2]}{-3-1}\\\\\\=\dfrac{10+2}{-4}\\\\\\=\dfrac{12}{-4}\\\\\\= - 3$

m = -3

Equation of the line: y = mx + b

y = -3x + b

To find the value of b, take one of the point and substitue in the above equaiton.

(1 , -2)

-2 = -3*1 + b

-2 = -3 + b

-2 + 3 = b

b = 1

Equation of the line:

y = -3x + 1

4 0

3 years ago

Please need help quick with a correct answer please

noname [10]

Got you fam. or whatever you kids say these days....

Reflect the rectangle across the y axis
Move +3 units x (3 units to the right _)
Rotate -90°
Move -3 units y (3 units down)

5 0

3 years ago

1.) There are f fish in an aquarium. One fourth of the fish are angelfish. How many are angelfish?

natali 33 [55]

Answer

1. f - 3/4

2. 62 + h

Step-by-step explanation:

1. 1/4 of the fish are angelfish, all fish are one whole, one whole - 3/4's = 1/4

2. we dont have the value of H so we in turn have to figure out the equation and 62 + h is the only answer we can come to

8 0

3 years ago

Southwest Co-op produces bags of fertilizer, and it is concerned about impurity content. It is believed that the weights of impu

Harman [31]

Answer:

a) 0.216

b) 0.1587

c) 0.369

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 12.2 grams

Standard Deviation, σ = 2.8 grams

We are given that the distribution of weights of impurities per bag is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

a) P(contains less than 10 grams of impurities)

P(x < 10)

$P( x < 10) = P( z < \displaystyle\frac{10 - 12.2}{2.8}) = P(z < -0.7857)$

Calculation the value from standard normal z table, we have,

$P(x < 10) =0.216= 21.6\%$

b) P(contains more than 15 grams of impurities)

P(x > 15)

$P( x > 15) = P( z > \displaystyle\frac{15 - 12.2}{2.8}) = P(z > 1)$

$= 1 - P(z \leq 1)$

Calculation the value from standard normal z table, we have,

$P(x > 610) = 1 - 0.8413 = 0.1587 = 15.87\%$

c) P(contains between 12 and 15 grams of impurities)

$P(12 \leq x \leq 15) = P(\displaystyle\frac{12 - 12.2}{2.8} \leq z \leq \displaystyle\frac{15-12.2}{2.8}) \\\\= P(-0.0714 \leq z \leq 1)\\\\= P(z \leq 1) - P(z < -0.0714)\\= 0.841 - 0.472 = 0.369 = 36.9\%$

$P(12 \leq x \leq 15) = 36.9%$

d) The mean divide the data in exactly two parts. Since 15 is farther away from the mean as compared to 10, the probability obtained in part (b) is smaller as compared to probability obtained in part (a).

5 0

4 years ago

In Ms.Williams class, 60% of the students are boys. There are 18 boys in the class. ha is the total number of students in Ms.Wil

aalyn [17]

Answer:

The total amount of students in the class would be 30. The total amount of girls would be 12.

Step-by-step explanation:

60% * x = 18

(60/100) * x = 18

6x/10 = 186x = 18 * 10

6x = 180x = 180/6 = 30

The total number of students in the class is 30.

Number of girls in the class = 30 - 18 = 12

So there are 12 girls in the class.

5 0

4 years ago

Read 2 more answers