1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
djyliett [7]
4 years ago
13

Solve by completing the square: (2x^2)+5x+4=-3

Mathematics
1 answer:
Viefleur [7K]4 years ago
7 0

Answer:

Step-by-step explanation:

You might be interested in
Can some one help with the following please…???
LenaWriter [7]

Answer:

5. 8

6. 18

Step-by-step explanation:

5.

a(a^2 + a - 1) + 7 =

= a^3 + a^2 - a + 7

For a = -1,

= (-1)^3 + (-1)^2 - (-1) + 7

= -1 + 1 + 1 + 7

= 8

6.

2ab(a + b) - 3ab(a - b) =

= 2a^2b + 2ab^2 - 3a^2b + 3ab^2

= -a^2b + 5ab^2

For a = 1 and b = 2,

= -(1)^2(2) + 5(1)(2)^2

= -1(2) + 5(4)

= - 2 + 20

= 18

5 0
4 years ago
Read 2 more answers
What’s 3x3x3x3x3x3x3
Artist 52 [7]

Answer:

2,187

Step-by-step explanation:

I used a calculator.

8 0
3 years ago
Solve the system 8y-5z=23 3y-2z=6<br><br> 100 POINTS
Hatshy [7]

Answer:

z = 21 ; y= 16

Step-by-step explanation:

first of all we have to isolate a variable.

In second expression we can obtain:

3y = 2z+6

y = 2/3 z + 2

now we have to substitute this value in the first equation and solve it

8(2/3z+2)-5z = 23

16/3z + 16 -5z = 23

16z +48 - 15z = 69

z = 21

now we have to substitute z in the second equation:

y = 2/3 (21) +2

y = 14+ 2 = 16

y = 16

6 0
3 years ago
Read 2 more answers
5. One kilogram is 2.2 pounds. Complete the tables. What is the interpretation of the constant of proportionality in each case?​
Sergeeva-Olga [200]

Answer:

There is 0.5 kiligrams in one pound

Step-by-step explanation:

4.98952

2.49476

0.5

6 0
2 years ago
Find the absolute value of the complex number 5 - 4i.<br> a. -6.4<br> c. 6.04<br> b.6<br> d. 6.4
Tanya [424]
The correct answer is d. Please give me brainlest I hope this helps let me know if it’s correct or not thanks I appreciate it thanks
6 0
3 years ago
Other questions:
  • In the figure below, if BE is the perpendicular bisector of AD , what is the value of x?
    7·1 answer
  • Hey:) can you please help me posted picture of question
    15·1 answer
  • A scale is 1 cm : 20 m. Describe and correct the error in finding the actual distance that corresponds to 5 cm.
    11·1 answer
  • Gina plotted 3 points from the equation y = x + 2 on this coordinate grid. She drew a straight line through the points.
    5·1 answer
  • 56-m=48-25<br> What this means?
    6·2 answers
  • Five times a complement of an angle exceeds twice its supplement by 9. Find the angle
    12·1 answer
  • A coin is dropped in a 15.0 m deep well.
    7·1 answer
  • David wants to arrange the cars on his car lot. He wants to park the cars in rows with the same number of each type of car in ea
    6·1 answer
  • Solve with explanation
    5·1 answer
  • PLS help me Order four and seven tenths repeating, negative four and eight ninths, 490%, and −4.9 from least to greatest.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!