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labwork [276]
3 years ago
12

Mathematicians use "..." to mean that a pattern continues: it

Mathematics
1 answer:
Fofino [41]3 years ago
6 0

Answer:

Step-by-step explanation:

We khow that A is the sum of all odd numbers that are less than 100

So A= 1+3+5+...+99

We can calculate this sum without adding all this numbers one by one

A = the number of terms *( first term + last one ) over 2

To get the number of terms we substract the first term from the last term then we add one

We khow that odd numbers are wiritten this way : 2*n +1 where n is an integer

So 99= 2*49+1

1= 2*0+1

So the number of terms is : 49-0+1 =50

So A= 50*(1+99)/2 = 2500

Foloowing the same method we get :

B= (49-1+1)*(2+98)/2= 2450

A>B

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A=1/2(b_1 + b_2)h solve for h
Lubov Fominskaja [6]

Answer: H = 1

Step-by-step explanation:

7 0
2 years ago
PLZ HELP ASAP RADIANS AND ARC LENGTH
velikii [3]

<span>The arc length by definition is given by:</span>

<span> S = R * theta</span>

<span> Where,</span>

<span> R: radio</span>

<span> Theta: central angle</span>

<span> Substituting values we have:</span>

<span> S = 10 * (3/2) pi</span>

<span> Rewriting we have:</span>

<span> S = 5 * (3) pi</span>

<span> S = 15pi</span>

<span> Answer:</span>

<span> The arc length is:</span>

<span> <span>S = 15pi</span></span>

3 0
3 years ago
Which of the following appear in the diagram below?
vladimir1956 [14]

Answer:

A , B, D

Step-by-step explanation:

YX is the segment joining points Y and X and is defined (A)

∠ XYZ is the angle between XY and YZ and is defined (B)

∠ YXZ is the angle between YX and XZ

However there is no segment joining XZ ← not defined

YW is the segment joining points Y and W and is defined (D)

7 0
2 years ago
Michael added 15 fish to his pond over a period of 5 days he added the same number of fish each day what was the change in the n
Yuri [45]

Answer:

3

Step-by-step explanation:

15 fish / 5 days = 3 fish per day

5 0
3 years ago
Replace ∗ with a monomial so that the derived expression may be represented as a square of a binomial: * +14b+49
anyanavicka [17]

Answer:

  * = b²

Step-by-step explanation:

You know that the square of a binomial is of the form ...

  (x + y)² = x² + 2xy + y²

Matching given terms, we have ...

  49 = y²

  2xy = 14b

Solving the first of these relations for y, we have

  y = √49 = 7

Putting that in the second relation and solving for x, we find ...

  2x·7 = 14b

  14x = 14b

  x = b

Then the first term of the expansion, x², will be b².

The missing term is b².

7 0
3 years ago
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