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Ksenya-84 [330]
3 years ago
10

A piece of carpet is in the shape of an isosceles trapezoid with a height of 30 inches and bases 40 and 60 inches. What is the a

rea of the carpet?
Mathematics
1 answer:
yaroslaw [1]3 years ago
3 0
30x40x60=72,000. with area you do LxWxH
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A wooden block measures 2 inches by 2 inches by 3 inches. A wedge is cut off from each corner of the block by slicing at points
seraphim [82]

Answer:

Number of edges in the resulting solid = 12

Step-by-step explanation:

A wooden block measures 2 inches by 2 inches by 3 inches. A wedge is cut off from each corner of the block by slicing at points that are 1 inch from each corner.

We are supposed to find the number of edges that are in the resulting solid.

In some corners , if we take out inch from both, then there would be nothing remaining.

The two faces along the height would be removed and it will become sharpened.

So the number of edges = 4 + 4 + 4 = 12

7 0
3 years ago
3(2y-3)=27can u solve this one
navik [9.2K]
3(2y-3)=27
6y-9=27
6y=36
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7 0
2 years ago
46 + (-2k) a. for k =3 b.for k = 23 k = -2
mamaluj [8]

9514 1404 393

Answer:

  a.  40

  b.  0

  c.  50

Step-by-step explanation:

a) 46 + (-2k) for k = 3 is ...

  46 + (-2(3)) = 46 -6 = 40

__

b) 46 + (-2k) for k = 23 is ...

  46 + (-2(23)) = 46 -46 = 0

__

c) 46 + (-2k) for k = -2 is ...

  46 + (-2(-2)) = 46 +4 = 50

3 0
2 years ago
Which of these situations can be represented by the opposite of -9
Nitella [24]
The answer is B) you climb up 9 flights of stairs

7 0
3 years ago
Read 2 more answers
Which of the following must also be known in order to compute the standard deviation?A) ModeB) MeanC) RangeD) Median
igor_vitrenko [27]

Answer:

B) Mean

Step-by-step explanation:

Standard Deviation is the measure of the amount of variation or dispersion of a set of values. Standard Deviation is represented by lower case Greek alphabet sigma σ. Standard Deviation is the square root of variance. Variance is the average of the squared differences or variation or dispersion from the Mean. Therefore, to compute standard deviation, the mean of the given data must be known.

    Standard Deviation, σ =  \sqrt{Variance}

                     σ = \sqrt({\frac{1}{N-1}} ∑_{i = 1}^{N}(x_{i} - X)^{2})

where

x_{1},x_{2},x_{3}, ...x_{N}, are the values of the sample observed,

X is the mean value of these observations, and

N is the number of observations in the sample.

8 0
3 years ago
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