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AlexFokin [52]
3 years ago
8

Can someone help me please?

Mathematics
1 answer:
Shtirlitz [24]3 years ago
8 0
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11.1.30<br> How many three-digit even numbers are possible if the leftmost digit cannot be zero?
Ann [662]

The total number of 3 digit even numbers is 450

Step-by-step explanation:

Step 1 :

We need to determine the  number of 3 digit numbers which is even and the leftmost digit is not zero .

The  3 digits with left most digit not equal to zero starts from 100 and goes up to 998

If we consider only the even 3 digit numbers in this interval, this would form an arithmetic progression with the first number a = 100 and the common difference d = 2.

Step 2:

The last number l  in this series is 998 .

So we have

a = 100

l = 998

d = 2

The nth term in the arithmetic progression is given by a + (n-1) d

so substituting the above values we get

100 + (n-1) 2 = 998

2n = 900  => n = 450

Step 3 :

Answer :

The total number of 3 digit even numbers is 450

4 0
3 years ago
If the endpoints of the diameter of a circle are (−10, −8) and (−6, −2), what is the standard form equation of the circle? A) (x
kolbaska11 [484]
Selections B and D both appear to be appropriate.
  B) (x+8)² + (y+5)² = 13
  D) (x+8)² + (y+5)² = 13

_____
The center is at the midpoint of the diameter, ((-10-6)/2, (-8-2)/2) = (-8, -5). For center (h, k) and radius r, the equation is
  (x -h)² +(y -k)² = r²
  (x -(-8))² +(y -(-5))² = (√13)²
  (x+8)² + (y+5)² = 13
4 0
3 years ago
Read 2 more answers
Jacky spent 53% of all her money to buy a computer game. How much did the game cost, if Jacky had $120 before buying the game?
Keith_Richards [23]
The game cost 63.6$, because 53% of 120 is 63.6
5 0
3 years ago
Read 2 more answers
Evaluate the expression [(12x2.4) -(8.4*0.6)] +27-5.1
MariettaO [177]

Answer:45.66

Step-by-step explanation: Simplify the expression.

Hope this helps you out! ☺

6 0
3 years ago
X^2-16x+64=-8 take the square root of both sides
dimulka [17.4K]
I think the answer is x2 +64 but I hope you get it right good luck ! I hope it is 64 thanks
3 0
3 years ago
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