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RUDIKE [14]
3 years ago
7

Which of the following is the simplified

Mathematics
2 answers:
Umnica [9.8K]3 years ago
4 0

Answer:

C. 8a - 36

Step-by-step explanation:

a + 3a - 4(9-a)

a + 3a - 36 + 4a

8a - 36

yulyashka [42]3 years ago
4 0
8a-36 is the simplified version :)
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Calculate the area of the alarm clock.
docker41 [41]

Given the diameter of the surface of the clock, the area of the surface of the alarm clock is 3846.5cm².

<h3>What is the area of the alarm clock?</h3>

Note that: Area of a circle is expressed as;

A = πr²

Where r is radius and π is constant pi ( π = 3.14 )

Given that;

  • Diameter d = 70cm
  • Radius r = d/2 = 70cm/2 = 35cm
  • Area = ?

A = πr²

A = 3.14 × ( 35cm )²

A = 3.14 × 1225cm²

A = 3846.5cm²

Therefore, given the diameter of the surface of the clock, the area of the surface of the alarm clock is 3846.5cm².

Learn more about area of circle here: brainly.com/question/22964077

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8 0
2 years ago
Please Help me Find NM using Secant
kondaur [170]

Answer:

NM = 15

Step-by-step explanation:

There is a property of secants and tangents to a circle where:

The square of the tangent length is equal the length of the external segment of the secant times the whole secant length.

Therefore, in our question, we have that:

NM^2 = ML * MK

The values of NM, ML and MK are:

NM = x + 3

ML = x - 3

MK = ML + LK = x - 3 + 16 = x + 13

So we have:

(x+3)^2 = (x - 3)(x + 13)

x^2 + 6x + 9 = x^2 + 10x - 39

6x + 9 = 10x - 39

4x = 48

x = 12

So the length of NM is:

NM = x + 3 = 12 + 3 = 15

3 0
3 years ago
Which describes the calculations that could be used to solve this problem?
xenn [34]
Hello!

First of all let's subtract the cost of the serving dish.

69.77-18.25=51.52

Now we divide this cost by four.

51.52/4=12.88

Therefore, 1 plate costed $12.88.

I hope this helps!
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3 years ago
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When we plot all the points that satisfy an equation or inequality we what it?
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