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aliya0001 [1]
2 years ago
13

Combine terms to simplify a + 2a +7

Mathematics
1 answer:
Nimfa-mama [501]2 years ago
8 0

Answer:

Step-by-step explanation:

  1. Identify Like Terms: <em>a</em> and <em>2a</em> are like
  2. Combine Like Terms: <em>a + 2a = 3a</em>
  3. Substitute to Form an Expression: <em>3a + 7</em>

Sincerely,

<em>Gigabyte</em>

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Short Response
garik1379 [7]

Answer:

(a)2(89x+84)

(b)2(89x+84-x^2\pi)

Step-by-step explanation:

The dimensions of the larger rectangular field are:

  • Length=5x + 12; Width = 9x + 14.

The dimensions of the smaller rectangular soccer field are:

  • Length=5x; Width = 9x.

(a)Area of the part of the field that is outside the soccer field

=Area of the larger rectangular field - Area of the Soccer Field

=(5x+12)(9x+14)-5x(9x)

=(5x)(9x)+70x+108x+168-5x(9x)

=178x+168

=2(89x+84)

(b)Radius of the Semicircular Fountain =2x

From Part (a),

Area of the larger rectangular field - Area of the Soccer Field=178x+168

Area of the Semicircular Fountain =\dfrac{\pi r^2}{2} =\dfrac{\pi (2x)^2}{2} =\dfrac{4x^2\pi}{2} =2x^2\pi

Area of the Field that does not include the soccer  field or the fountain.

=Area of the larger rectangular field - Area of the Soccer Field-Area of the Semicircular Fountain

=178x+168-2x^2\pi\\=2(89x+84-x^2\pi)

8 0
3 years ago
What is the sign of 3x y3xy3, x, y when x&gt;0x&gt;0x, is greater than, 0 and y&lt;0y&lt;0y, is less than, 0?
jekas [21]

Answer:

Negative

Step-by-step explanation:

We\ have\ to\ find\ sign\ of\ 3xy^3\\\\x>0\ and\ y0,y

4 0
3 years ago
Read 2 more answers
Highest comman factor of 200 and 240
Schach [20]

Answer:

40

Step-by-step explanation:

GCF of 200 and 240 is 40

4 0
3 years ago
Read 2 more answers
A, E, and D are collinear. BCDE is a parallelogram. Find m
zmey [24]

Answer:

Step-by-step explanation:

Penis

3 0
3 years ago
Trying to find volume of a right circular cone.
viva [34]

Volume of the cone is 117.5 π ft³

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

Lateral area of the cone = πrs

s is the slant height = 15 ft

From the above formula, we can find the radius as, 5 ft.

Volume of the cone = π r² h/3

s = √ (5²+ h²)

Squaring on both sides, we will get,

s² = 15² = (5² + h²)

 15² - 5² = h²

225 - 25 = 200 = h²

h = √200 = 14.1 ft

Volume = π × 5² × 14.1  / 3 = 117.5 π ft³

8 0
3 years ago
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