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Akimi4 [234]
3 years ago
6

Thirty elves would like to build a skating rink, so they can all use it at the same time. Santa tells them, they need at least 4

0 square feet for each skater, so no one will bump into each other. If they build a rectangular rink, what are some possible dimensions (length and width) for the rink?

Mathematics
1 answer:
erastovalidia [21]3 years ago
3 0
Wow you write really fast
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I need help with how to solve this problem. It is #14. It already shows the answer (1point) but I need help on how to get there
Hitman42 [59]

Answer:

Option 4: 0.554

Step-by-step explanation:

As we can see that the intervals and their frequencies are given.

We have to calculate the probability of students' score falling between 70 and 89. It will use the frequency of both intervals 70-79 and 80-89.

So, combined scores of both intervals are:

172+105 = 277

Now to find the probability

= 277/500

=0.554

So option no 4 is the correct answer ..

7 0
4 years ago
determine the householder transformation that annihilates all but the first entry of the vector [1 1 1 1 ]t. specifically, if (
Stolb23 [73]

Answer:

v=a+ 2e1= [3 1 1 1] x^{T}.

Step-by-step explanation:

Let a = ^{}\left[\begin{array}{ccc}\\1&1&1\\\end{array}\right] ^{T}and we know that\alpha=±║α║₂= 2.

As we have gone over in class, the formula for v is v= a-\alphae1

with the sign of chosen to avoid subtraction. This gives v=a+ 2e1= [3 1 1 1] x^{T}.

Disclaimer ;The question is incomplete

Question:

Determine the Householder transformation that annihilates all but the first entry of the vector[1 1 1 1]>Specifically, if

I-2vv^{T}/v^{T}v\left[\begin{array}{ccc}1\\1\\1\\1\end{array}\right]==\left[\begin{array}{ccc}\alpha \\0\\0\\0\end{array}\right]

what are the values of α and v?

#SPJ4

learn more about it on

brainly.com/question/28180105

8 0
2 years ago
Math Exit Slip: Value-Mart is having a back -to - school sale on pencils. A pack of of 20 sells for $7.97, whereas a 12-pack cos
Whitepunk [10]

Answer: The pack of 20.

Step-by-step explanation:

It is because a pack of 20 sells for 2.50 for each pencil, and the pack of 12 sells for 2.51 per pencil, so that means the pack of 20 is cheaper.

4 0
3 years ago
Are any of these a function
Elena-2011 [213]

Answer:

Yes because the 1st and 3rd one are functions

Step-by-step explanation:

6 0
3 years ago
3x + 10y = 12, 3x - 8y = 12
weeeeeb [17]
Working attached below:

Hope this helps! Any questions let me know :)

6 0
3 years ago
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