3 years ago

Solve for x. show your work. 2x^2+8x=-10

Mathematics

2 answers:

Anastasy [175]3 years ago

8 0

120 because 2x^2+8x=-10

malfutka [58]3 years ago

3 0

Answer:

120

Step-by-step explanation:

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J. Reexamine the sequence 20, 14, 8, 2, ... from the problem

DENIUS [597]

Answer:

The n th of the given sequence is $t_{n} = 26-6 n$

Step-by-step explanation:

Step 1 :-

Given sequence is 20,14,8,2,.......this sequence in arithmetic progression but this sequence is decreasing sequence.

given first term is 20 and difference is $d = second term- first term = 14-20=-6$

now the nth term of given sequence is

by using formula $t_{n}=a+(n-1)d$

$t_{n}= 20+(n-1)(-6)$

$t_{n}= 20-6 n+6$

final answer:-

$t_{n} = 26-6 n$

verification:-

$t_{n} = 26-6 n$

put n=1 we get first term is 20

put n=2 we get second term is 14

put n=3 we get third term is 8

put n=4 we get fourth term is 2

so the n th term of sequence is

$t_{n} = 26-6 n$

3 0

3 years ago

Will give brqinlist if correct

BARSIC [14]

Answer:

7 + 8x

Step-by-step explanation:

-11 + 2 (4x -1) + 6

=> -11 + 8x -2 + 6

=> -13 + 8x + 6

=> -7 + 8x

So, the simplified expression is 7 + 8x.

5 0

4 years ago

Number 9 help, please

Drupady [299]

Answer:

Unique

Step-by-step explanation:

5 0

3 years ago

What are the leading coefficient and degree of the polynomial? 3u-5u^6+9u^3. HELP!

koban [17]

Answer:

-5, 6

Step-by-step explanation:

Since 6 is the highest power, it is the degree, and so we also take the coefficient of that term.

4 0

3 years ago

Bob's gift shop sold a record number of cards for Mother's Day. One salesman sold 25 cards, which was 20% of the cards sold for

Rina8888 [55]

Answer:

125 cards

Step-by-step explanation:

20% = 0.2= 1/5

So because 25 is 1/5 0f the total number cards multiply 25 by 4 to get the other 80% and add the first 25 cards to that number.

(25 x 4) + 25= ?

100 + 25 = 125

therefore 125 cards were sold.

8 0

2 years ago