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dem82 [27]
3 years ago
14

Consuelo and James are writing an algebraic expression for three times the sum of n squared and 3. Is either of them correct?

Mathematics
1 answer:
Artyom0805 [142]3 years ago
8 0

<u>Yes the first one is correct because n squared is n with the 2 above it and adding it to three gets your first answer and then the three on the outside means to multiply so your first response is correct.</u>


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Tony needs to create a platform shaped like the diagram with the labeled dimensions.
konstantin123 [22]
<h2>135 cubic feet of concrete are required to create the platform.</h2>

Step-by-step explanation:

The dimension of lower step is 6 ft× 3 ft× 1.5 ft

and the dimension of upper step is 6 ft ×(9-3)ft × (1.5+1.5)ft = 6 ft × 6 ft ×3 ft

Therefore concrete are required to make lower step = (6×3×1.5) cubic feet

                                                                                       = 27 cubic feet

and concrete are required to make upper step = (6×6×3) cubic feet

                                                                               =108 cubic feet

<h3>∴(108+27) cubic feet = 135 cubic feet of concrete are required.</h3>

8 0
3 years ago
Read 2 more answers
A 40 inch board is to be cut into three pieces so that the second price is 4times as long as the first piece and the third piece
Anastasy [175]

Answer:

Step-by-step explanation:

Givens

Let the first piece be x

Let the second piece 4x

Let the third piece = 5x

Total length = 40 inches.

Equation

x + 4x + 5x = 40                Combine

Solution

10x = 40                             Divide by 10

10x/10 = 40/10        

x = 4

Answer

The smallest piece (x) = 4

The middle piece 4x  = 4*4 = 16

The largest piece 5x= 5 * 4 = 20

3 0
1 year ago
Please please help me with this
BartSMP [9]

Answer:

x = 5

Step-by-step explanation:

Just use the Pythagorean Triangle:

13^2 - 12^2 = x^2

x^2 = 25

x = 5

5 0
3 years ago
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Delicious77 [7]

334

Step-by-step explanation:

8 0
2 years ago
Solve this problem: 125^-1/3×49^-1/2 ​
Andreyy89
I believe the answer is: 1/35

Hope this helps!!
6 0
3 years ago
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