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Bond [772]
3 years ago
9

Evaluate the expression 3.14(a2 + ab) when a = 3 and b = 4. (Input decimals only, such as 12.71, as the answer.)

Mathematics
2 answers:
34kurt3 years ago
6 0
3.14(a2+ab)
3.14(3(2)+3(4)
3.14 +6+12
3.14+18
21.14 I think that's it sorry if it's not.
Alex777 [14]3 years ago
6 0

Answer:its like a by the power 2

Step-by-step explanation:

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each student must do 14 hw problems. there are 23 students in the class, how many problems will your teacher have to grade? who
lys-0071 [83]
The teacher would have to grade 322 problems

14 (problems) x 23 (students)
Answer: 322
6 0
3 years ago
If x= -3, and -3 = y, then what can be said about the relationship between x and y? Explain
ella [17]

I'd say that the relationship between y and x is that they're both equivalent to each other, since -3 = -3.

7 0
3 years ago
Read 2 more answers
How to get x when x^3-x^2+x-1=0?
Art [367]

Answer:

x = 1 or x = ± i

Step-by-step explanation:

Note the sum of the coefficients

1 - 1 + 1 - 1 = 0

This indicates that x = 1 is a root, thus (x - 1) is a factor

Using long division or synthetic division, then

x³ - x² + x - 1 = (x - 1)(x² + 1), thus

(x - 1)(x² + 1) = 0

Equate each factor to zero and solve for x

x - 1 = 0 ⇒ x = 1

x² + 1 = 0 ⇒ x² = - 1 ⇒ x = ± \sqrt{-1} = ± i

6 0
3 years ago
How do you multiply these polynomials?<br><br> 3xy^2(2y+4z)
nikitadnepr [17]

Answer:

6xy^3 +12xy^2 z

Step-by-step explanation:

3xy^2 (2y+4z)

Multiply

3xy^2 * 2y + 3xy^2 *4z

common factors

3xy^3 +3xy^2 *4z

Multiply

6xy^3 +12xy^2 z

7 0
3 years ago
PLZ HELP!!!! There is a box in your kitchen pantry that is a rectangular prism. Its volume is 64 cubic inches. How many differen
WINSTONCH [101]
We know that the volume of a rectangular prism is given by:
V = A · h
where:
A = surface area 
h = height

Therefore, you can solve for A:
A = V / h
   = 64 / h

Now, you need to ask yourself by how many numbers you can divide 64. The possible heights are 64, 32, 16, 8, 4, 2 and 1.

Hence:
A) there are 7 possible surface areas (one for each possible height).

B) the <span>maximum Area will be that of the box with the minimum height:
A = 64 / 1 = 64

C) the minimum Area will be that of the box with the maximum height:
A = 64 / 64 = 1</span>
7 0
3 years ago
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