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Mama L [17]
2 years ago
5

4z2+8z+4=0 is it soluton or no solution or two real solution

Mathematics
1 answer:
Nutka1998 [239]2 years ago
3 0

Answer:

z = -1

Step-by-step explanation:

Solve for z:

4 z^2 + 8 z + 4 = 0

Divide both sides by 4:

z^2 + 2 z + 1 = 0

Write the left hand side as a square:

(z + 1)^2 = 0

Take the square root of both sides:

z + 1 = 0

Subtract 1 from both sides:

Answer:  z = -1

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Find the sum of 1/6and 7/12 in lowest terms.
disa [49]

Answer:3/4

Step-by-step explanation:

Multiply 1/6 by 2 to get 2/12 and then add that to 7/12 and get 9/12

If you simplify that you end up with 3/4

6 0
3 years ago
Read 2 more answers
The school that DeShawn goes to is selling tickets to the annual dance competition. On the first day of ticket sales, the school
coldgirl [10]

Answer:

Both child tickets and senior tickets cost $14.

Step-by-step explanation:

Since the school that DeShawn goes to is selling tickets to the annual dance competition, and on the first day of ticket sales, the school sold 10 senior citizen tickets and 8 child tickets for a total of $ 252, while the school took in $ 280 on the second day by selling 10 senior citizen tickets and 10 child tickets, to determine what is the price of each of one senior citizen ticket and one child ticket, the following calculation must be performed:

10 senior tickets + 8 child tickets = 252

10 senior tickets + 10 child tickets = 280

280 - 252 = 2 child tickets

28 = 2 child tickets

28/2 = 1 child ticket

14 = 1 child ticket

14 x 10 = 140

(280 - 140) / 10 = senior tickets

140/10 = 14 = senior tickets

Therefore, both child tickets and senior tickets cost $14.

3 0
3 years ago
There are 7 rows of chairs and each row has 12 chairs in them; how many chairs are there altogether?
anyanavicka [17]

Answer:

184

Step-by-step explanation:

Just multiply 12 by 7

4 0
2 years ago
Read 2 more answers
Part 2<br> 5. -0.3 ÷ (-0.27) <br> 6. -5.5 ÷ 0.021 <br> 7. -412 ÷ -334 <br> 8. 7.75 ÷ ( -123)
victus00 [196]

Answer:

5. -10/9

6. -5500/21

7. 1 39/167

8. -31/492

3 0
3 years ago
A recipe calls for 3/4 lb of cream cheese. A small tub of cream cheese at the grocery store weighs 12oz. Is this enough cream ch
Vsevolod [243]
Yes this is enough cream cheese
4 0
3 years ago
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