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erastovalidia [21]
3 years ago
5

Write each phrase as an algebraic expression Two times n squared added to nine

Mathematics
2 answers:
Bad White [126]3 years ago
8 0
The answer for this question is 2n^2+9
expeople1 [14]3 years ago
7 0

Answer:

2n^2+9 is the phrase for correct expression

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Calculate the length CD. <br>I need to understand how to do it, can someone help me please? ​
kolbaska11 [484]

Answer:

77.6m (3 s.f.)

Step-by-step explanation:

Please see the attached pictures for full solution.

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3 years ago
Simplify −√81 3 −2√48 3 +2√24 Work Needed
MissTica

Answer:

Step-by-step explanation:

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2 years ago
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The area of a rectangle whose perimeter is a fixed 80 feet is given by A=40w - w2 , where w is the width of the rectangle. Deter
Stolb23 [73]

Answer:

Width=20 feet

Since Length=Width=20 feet, the rectangle is a Square.

Step-by-step explanation:

Area, A=40w - w^2

To determine the width of the rectangle that gives the maximum area, we take the derivative of A and solve for its critical point.

A'=40 - 2w\\$When A'=0\\40-2w=0\\40=2w\\w=20 feet

The width of the rectangle that gives the maximum area =20 feet.

Perimeter of a rectangle=2(l+w)

Perimeter of the rectangle=80 feet

2(l+w)=80

2l+2(20)=80

2l=80-40

2l=40

l=20 feet

Since the length and width are equal, the special type of rectangle that produces this maximum area is a Square.

7 0
3 years ago
Two fair coins are flipped. Given that at least one coin lands on a head, calculate the probability of one head and one tail. Wr
Greeley [361]

The probability of one head and one tail is 2/3.

<u>Step-by-step explanation</u>:

  • The possibilities for flipping two fair coins are {T,T}, {H,H}, {H,T}, {T,H}
  • Given the case that at least one coin lands on a head, So the total possibilities are {H,H}, {H,T}, {T,H} = 3 possibilities
  • Required event is 1 head and 1 tail= {H,T}, {T,H} = 2 possibilities

To calculate the probability of one head and one tail,

Probability = required events / Total events

Probability = 2/3

8 0
3 years ago
Find three consecutive even integers, such that
SIZIF [17.4K]

Answer:

8,10 ,12

Step-by-step explanation:

x

x+2

x+4

    5x-18 =x+2 + x+4

5x-18=2x+6

3x=24

x=8

   8*5=40   40-18= 22

   10+12 = 22

7 0
3 years ago
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