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Gemiola [76]
3 years ago
7

Which equations are true for x = –2 and x = 2? Check all that apply.

Mathematics
1 answer:
4vir4ik [10]3 years ago
4 0
А. х²-4=0; х²=4; х=±2, true. B. x²=-4; there is no solution. C. 3x²+12=0; 3x²=-12; x²=-4; there is no solution. D. 4x²=16; x²=4; x=±2, true. E. 2(x-2)²=0; 2(x²-4x+4)=0; 2x²-8x+8=0; x²-4x+4=0; x1=2; x2=2. False. The answer: A, D.
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4 years ago
Solve x^2=28 where x is a real number
Vadim26 [7]
5.291 to 2 d.p I think that is the answer.
7 0
3 years ago
(7.02) classify each sequence as arithmetic, geometric, or neither.
Digiron [165]

Answer:

geometric

arithmetic

arithmetic

Step-by-step explanation:

1.

4/9,4/3,4,12,36

Multiply each term by 3 to get the next term. There is a common ratio between terms, so it geometric.

2.

0,1,2,3,4,5,6

Add 1 to each term to get the next term. Since there is a common difference between terms, it is an arithmetic sequence.

3.

-10,-6,-2,2,6,10

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6 0
3 years ago
for a two week period, john and amanda had the following transactions occur to their cheking account: a deposit of $1,644.50;che
QveST [7]

a deposit of $1,644.50;checks written for $190, $45, and $7.50;  and debit card transactions for $30, $5.59, $7.20, and $21.30.

amount deposited = 1644.50

debit card transactions for $30, $5.59, $7.20, and $21.30.

We add all the debit card transactions

30 + 5.59 + 7.20 + 21.30 =64.09

checks written for $190, $45, and $7.50

Add all the check written amounts

190 + 45 + 7.50=242.5

To find ending balance , we subtract the debit card transactions and check written from the deposit amount

1644.50 - 64.09 - 242.5 = 1337.91

$1,337.91 is the ending balance for this time frame

8 0
3 years ago
Find the missing length.
Umnica [9.8K]

Answer:

42

Step-by-step explanation:

7 0
3 years ago
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