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Alla [95]
3 years ago
8

PLEASE HELP THANKS SO MUCH!

Mathematics
1 answer:
Zolol [24]3 years ago
5 0
Surface area = sum of 2 triangles + sum of the 3 rectangles

= 2 * 84 + 18*24 + 18*25 + 18*7 =  1176 ft^2

volume = 1/2*7 *24 * 18  =  1512 ft^3
surface area to volume = 1176:1512 =  0.78 which is less than 1.
so the company wil manufacture it.
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Which is equivalent to 4(x + 7)?<br> 0 4x + 7<br> 0 4x + 28<br> O 4 + 28<br> O4 + 7x
Leni [432]
4x + 28

Distribute the four to both numbers to and add the x to the four for 4x 4 x 7= 28 so

4x + 28
8 0
2 years ago
How many one-half cubes with dimensions of 1/2x1x1 fit in a unit cube? 1
yanalaym [24]

Answer:

Option 2

Step-by-step explanation:

A cube with 1/2 * 1* 1 will have a volume of 0.5 cubic cm

While a unit cube has a volume of 1 cubic cm

So,

2 cubes of these dimensions can fit into a unit cube.

5 0
3 years ago
Read 2 more answers
*Please Help!* (Easy question) 20 POINTS
mariarad [96]
Yes - they have to be similar.  Since they are using the same line as the hypotenuse, the ratio of the other two sides are in the same ratio (ie, the slope of the line), the 3 inner angles will be the same.  Thus, the triangles will be similar.
7 0
2 years ago
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Suppose that a 2 by 10 rectangular grid of seats is filled with people. On the
IrinaVladis [17]

There are 20! number of ways for everyone to do this so that at the end of the move, each seat is taken by exactly one person.

People are seated in a 2 by 10 rectangle grid. All 20 persons stand up from their seats and relocate to an orthogonally neighboring one upon the blowing of a whistle.

Now, we have to find the number of possible ways in which each seat is taken up by exactly one person after the move.

As the number of people is 20 and 20 seats are to filled exactly once.

So, the number of ways = 20!

Learn more about number here:

brainly.com/question/1991469

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4 0
1 year ago
The national average sat score (for verbal and math) is 1028. if we assume a normal distribution with standard deviation 92, wha
elena55 [62]

Let X be the national sat score. X follows normal distribution with mean μ =1028, standard deviation σ = 92

The 90th percentile score is nothing but the x value for which area below x is 90%.

To find 90th percentile we will find find z score such that probability below z is 0.9

P(Z <z) = 0.9

Using excel function to find z score corresponding to probability 0.9 is

z = NORM.S.INV(0.9) = 1.28

z =1.28

Now convert z score into x value using the formula

x = z *σ + μ

x = 1.28 * 92 + 1028

x = 1145.76

The 90th percentile score value is 1145.76

The probability that randomly selected score exceeds 1200 is

P(X > 1200)

Z score corresponding to x=1200 is

z = \frac{x - mean}{standard deviation}

z = \frac{1200-1028}{92}

z = 1.8695 ~ 1.87

P(Z > 1.87 ) = 1 - P(Z < 1.87)

Using z-score table to find probability z < 1.87

P(Z < 1.87) = 0.9693

P(Z > 1.87) = 1 - 0.9693

P(Z > 1.87) = 0.0307

The probability that a randomly selected score exceeds 1200 is 0.0307

5 0
3 years ago
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