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Colt1911 [192]
3 years ago
10

What equation is equivalent to 2r^2-28r+38

Mathematics
1 answer:
Orlov [11]3 years ago
8 0

2r² − 28r + 38 = 0 
2 (r² − 14r) = −38 
2 (r² − 14r + 49) = −38 + 2(49) 
2 (r − 7)² = 60 

(r − 7)² = 30
the answer is 2(r-7)² =60
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Which of the sets shown includes the elements of set Z that are both odd numbers and multiples of 7?
vesna_86 [32]

Answer:

B. {-21.-7. 7. 21)

Step-by-step explanation:

The set made up of odd numbers and multiples of 7 is given as;

       {-21.-7. 7. 21)

Multiples of 7 are usually those numbers where 7 is  factor.

Odd numbers are numbers that cannot be divide by 2.

 So, the most fitting answer is B.

4 0
3 years ago
70,000 ones equal how many thousands?
Murrr4er [49]
70,000 ones is equal to 70,000/1000 thousands

70,000 ones = 70 thousands
8 0
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Please help, thank you!
shutvik [7]
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3 years ago
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There were 450 people at a play. The admission price was $2 for adults and $1 for children. The admission receipts were $680. Ho
vampirchik [111]

Answer:

Adults= 110

Children= 340

Step-by-step explanation:

Given data

let adults be x

and children be y

x+y= 450----------1

2x+y=680---------2

from 1

x= 450-y

put this in 2

2(450-y)=680

900-2y=680

900-680=2y

220=2y

y= 220/2

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4 0
3 years ago
HELP ME WITH THIS PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
BaLLatris [955]

Answer:

\sqrt{3} = m

Step-by-step explanation:

So we can say;

Tan(30) = m/3

=> Tan(30) * 3 = m

=> \sqrt{3} = m

Hope this helps!

8 0
2 years ago
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