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Brums [2.3K]
3 years ago
14

Work out 3a+b as a column vector

Mathematics
1 answer:
frozen [14]3 years ago
5 0

Answer:

3(a+2)

Step-by-step explanation:

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Thirty elves would like to build a skating ring so they can all use it at the same time. Santa tells them, they need at least 40
Delicious77 [7]

Answer:

The Possible dimension of the ring could be;

20 ft × 60 ft

25 ft × 48 ft

30 ft × 40 ft

60 ft × 20 ft

48 ft × 25 ft

40 ft × 30 ft

Step-by-step explanation:

Given:

Number of skaters = 30

Area for each skater = 40 sq ft

We need to find the dimension of rectangular ring the are going to build.

Now we know that they building the skating ring such that they all can use at same time.

Hence if the all use at same time then we will find the total area first.

Total area can be calculated by multiplying Number of skaters with area required for each skaters.

Framing the equation we get;

Total area = 30\times 40 = 1200 \ ft^2

Hence The total area of the rectangular ring would be 1200 sq. ft.

Now we know that Total area is equal to product of length and width.

length\times width =1200ft^2

1200 can be written as = 20 × 60, 25 × 48, 30 × 40,60 × 20,48 × 25,40 × 30

Hence the Possible dimension of the ring could be;

20 ft × 60 ft

25 ft × 48 ft

30 ft × 40 ft

60 ft × 20 ft

48 ft × 25 ft

40 ft × 30 ft

3 0
3 years ago
4. What is the perimeter of the rectangle<br> below?<br> 6 in.<br> 8 in.<br> 8 in.<br> 6 in.
Ivanshal [37]

Answer:

28 in.

Step-by-step explanation:

All you have to do is all the length of all the sides: 6+6+8+8=28 in.

7 0
3 years ago
Read 2 more answers
Can someone please help me out here ?
tresset_1 [31]

Answer:

D

Step-by-step explanation:

Since its less then the circle is open and the arrow goes to the left. The circle must be on -1. The answer is D.

3 0
3 years ago
What is 7/12 - 1/2 ?
Grace [21]

Answer:

1/12

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
9 is 3 less than a number n in standard form
mario62 [17]

Answer:

9=n-3

Step-by-step explanation:

6 0
2 years ago
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