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garik1379 [7]
4 years ago
13

PLEASE HELP ASAP!

Mathematics
2 answers:
padilas [110]4 years ago
8 0

Answer:  x ≥ 39

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

Let x represent the 1st odd integer

Then x + 2 represents the 2nd odd integer

1st odd #  <em>plus</em>  2nd odd # <em>is at least</em> the Sum

    x            +       x + 2             ≥             80

x + x + 2 ≥ 80

  2x + 2 ≥ 80

  2(x + 1) ≥ 2(40)

     x + 1  ≥  40

     x       ≥  39

Marta_Voda [28]4 years ago
4 0

Let x = larger odd integer

  then (x-2) is the smaller odd integer

 

Translate:

   "sum of two consecutive odd integers is 80"    means   (x-2) + x = 80

 

 2x -2 - 80

  2x = 82

   x = 41

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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 .

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

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100 + (n-1) 2 = 998

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Step 3 :

Answer :

The total number of 3 digit even numbers is 450

4 0
4 years ago
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In the diagram below, BD is parallel to XY. What is the value of x?
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I hope this helps.
6 0
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A vertical right circular cylindrical tank has height h=8 feet high and diameter d=6 feet. It is full of kerosene weighing 50 po
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Answer:

The work done to  pump all of the kerosene from the tank to an outlet is W=45238.9\: J  

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Therefore, the work done to  pump all of the kerosene from the tank to an outlet is W=45238.9\: J  

I hope it helps you!  

6 0
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