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charle [14.2K]
2 years ago
11

Write the set using the roster method A={a|a an even number and 15< a< =25}

Mathematics
1 answer:
pochemuha2 years ago
4 0

Answer:

{16, 17, 18, 19, 20, 21, 22,23, 24, 25}

Step-by-step explanation:

Given the set A={a|a an even number and 15< a< =25}

The inequality 15< a< =25 mean the set A consists of all the values between 15 and 25 with 25 inclusive (due to presence of the equal to sign)

Hence the required set A are {16, 17, 18, 19, 20, 21, 22,23, 24, 25}

Note that 15 is excluded from the set of number since 15<a i.e a > 15

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CaHeK987 [17]

Answer:

popcorn=4$

soft drink=4.5$

Step-by-step explanation:

  • if we used omitting method:

1-we multiply (p+s=8.5) by (-2) so we could get rid of (s) and be leftover with (p)

so: (-2p-2s= -17)

2- we subtract this equation from (p+2s=13) and the result will be (-p= -4)

3- divide them by (-1) and the result is (p=4)

4-(p+s=8.5) ,substitute (p) with (4) and make it go to the other side with negative sign and the result of (s) is (8.5-4=4.5)

  • if we used substituting method:

1-(p+s=8.50), we will make (s) go to the other side with negative sign so the result is (p=8.50-s)

2-(p+2s=13.00), substitute (p) with (8.50-s):

(8.50-s+2s=13)

3- make (8.50) go to the other side with negative sign:

(s=13-8.50=4.5) and then you could get (p)

8 0
3 years ago
Write a proof to show that opposite angles of a parallelogram are congruent. Be sure to create and name the appropriate geometri
RUDIKE [14]
Parallelograms, have 2 pairs of parallel lines. The diagnosis are congruent, so one diagnosis makes 2 congruent triangles. Use the WSS triangle theorem. We have congruent angles.
6 0
3 years ago
Find the 6th term in the sequence:100,60,36
IrinaK [193]

Answer:

Step-by-step explanation:100,60,36

hello :

the common ratio in the sequence:100,60,36  ( geometric sequence )

is : r = 60/36 = 36/100 = 0.6    the first term is : A1= 100

the n-ieme term is : An= A1× r ^(n-1)

An = 100× (0.6) ^(n-1)

the 6th term is : A6 = 100×(0.6)^5

4 0
3 years ago
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den301095 [7]

Answer:

4.4

Step-by-step explanation:

16.8 was for 4 hour

divide 4 by 16.8

you get 4.2 per hour

so you need 1 hour

1 hour would be 4.2

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4 0
3 years ago
Read 2 more answers
(9x−2.25)=(1.6+9x)<br><br> help
mel-nik [20]
Begin solving like you normally would. Add 2.25 to both sides and subtract 9x from both sides to try getting all x values on one side. However, you will find that after subtracting 9x from both sides, all x values go away, and you end with -2.25=1.6. This is not true (-2.25 is not 1.6), so the answer is no solution. There is no value of x which satisfies that equation.
4 0
3 years ago
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