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xxTIMURxx [149]
3 years ago
13

Which biconditional statement below is true?

Mathematics
1 answer:
Sindrei [870]3 years ago
8 0

Answer:  Angles are supplementary if and only if their sum is 180° is true.

Step-by-step explanation:

Test by making both parts negative: Angles are not supplementary if and only if their sum is not 180°  This is also true.

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The price of 7 cell phones, 9 TV sets and 12 air-conditioners is
mezya [45]

here, 7 cellphone,9 Tv, 12airconditioners = 8723

5 cellphone,7 Tv, 12airconditioners = 6523

or, 7,9,12=8723

-5,7,9=6523

______________

2,2,3=2191

then,

to make 4 cellphone , 4 tv set , 6 air conditioners add twice the answer ,

2,2,3=2191

+2,2,3=2191

____________

4,4,6=4382

hence,

the price of 4 cellphone , 4 tv set and 6 air conditioners is 4382 #

solved by

<h3> pratik</h3>

6 0
3 years ago
Determine if the matrix is symmetric.
Amanda [17]

Answer:

because this is equal to the given matrix, the given matrix is symmetric.

Step-by-step explanation:

A symmetric matrix is a square matrix which has same number of rows and columns. Square matrix is equal to transpose. Equal matrices have equal dimensions. The given matrix is symmetric because the rows and columns are equally distributed.

4 0
3 years ago
Nine hundred people who attended a movie were asked whether they enjoyed it. The table shows the results.
andrew11 [14]

Answer:

184

Step-by-step explanation:

I took the amount of children, 461, and subtracted the amount of adults surveyed.

461 - 277 = 184

6 0
3 years ago
Read 2 more answers
Joey scored 697 points by collecting 17 coins. In all, how many coins does Joey have to collect to score a total of 820 points?
Oksi-84 [34.3K]

Answer:

20 coins

Step-by-step explanation:

697/17 = 41

820/41 = 20 coins

7 0
3 years ago
Algebra Help (attatched)
oee [108]
So the y value of the vertex of the parabola that models the data should be the left hand side of the chart; Number of $2 increases in price. So however your graph is, it should make sense. 
3 0
3 years ago
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