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
VladimirAG [237]
3 years ago
12

Which of the following is a solution of x2 + 5x = −2?

Mathematics
2 answers:
devlian [24]3 years ago
5 0

Answer:

negative 5 plus or minus the square root of 17 divided by two: x=\frac{-5\pm\sqrt{17}}{2}.

Step-by-step explanation:

We have the equation

x^2+5x=-2

x^2+5x+2=0.

To solve it, we are going to use the general formula. This formula is used to find the solutions of quadratic equations.

x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

where a is the coefficient of x^2, in this case a=1, b is the coefficient of x, in this case b=5 and c is the independent term, in this case c=2.

x=\frac{-5\pm\sqrt{5^2-4(1)(2)}}{2(1)}

x=\frac{-5\pm\sqrt{25-8}}{2}

x=\frac{-5\pm\sqrt{17}}{2}.

adoni [48]3 years ago
4 0
X^2 + 5x = -2
x^2 + 5x + 2 = 0

x = -b (+-) sqrt (b^2 - 4ac) / 2a
a = 1, b = 5, and c = 2

x = -5 (+-) sqrt (5^2 - 4(1)(2)) / 2(1)
x = -5 (+-) sqrt (25 - 8) / 2
x = -5 (+-) sqrt (17) / 2

answer is : negative 5 plus or minus the square root of 17 divided by 2
You might be interested in
Father's age is 3 times the sum of ages of his two children. After 5 years his age will be twice the sum of ages of two children
ra1l [238]

Answer:

45 is the father's age

Step-by-step explanation:

7 0
3 years ago
How do you solve 9 tenths minus 13 fiftenths
Elena L [17]

Answer:

0.04

Step-by-step explanation:

1. 9/10 = 0.9 and 13/15 = 0.86

2. Subtract 0.9 and 0.86

3. You should end up with 0.04

Remember when a number goes like 0.86666666666 to use 0.86 or if it has 0.86666666667 to use 0.87 because you would be simplifying it.

4 0
3 years ago
△DEF is shown below.<br><br>Triangle DEF<br><br>What is m∠DEF?​
S_A_V [24]

Answer:

m∠DEF = 50

Step-by-step explanation:

∠DEG = ∠GEF

3y + 4 = 5y - 10

subtract 4 from both sides

3y = 5y - 14

subtract 5y from both sides

-2y = -14

divide by -2

y = 7

Add 7 into the equations:

3y + 4 + 5y - 10

3(7) + 4 + 5(7) - 10

21 + 4 + 35 - 10

25 + 25

50

4 0
3 years ago
Find the vertex of the parabola.<br> x² + y - 6x + 10 = 0
Drupady [299]
Find the Vertex Form

y = -(x-3)^2-1
3 0
3 years ago
Jesselyn made 6 muffins. She used 3/8 teaspoon of baking powder for each muffin. How much baking powder did Jesselyn use for all
bezimeni [28]

Answer:

C

Step-by-step explanation:

Multiply the number of muffins by how much baking powder is in each muffin. That's read as 6/1 × 3/8 which equals 18/8.

6 0
2 years ago
Other questions:
  • A school gym has an area of 2400 square feet. For a pep rally there are 700 people in the gym. How many square feet are availabl
    11·1 answer
  • Can someone help me with this problem (-3x+15) + (-3x + 2)
    9·2 answers
  • Find the image of (9, 5) after a counterclockwise rotation of 270° about the origin.
    14·2 answers
  • The manager of a video game store found that 35 of the 140 people who preordered the latest baseball game canceled their orders
    5·2 answers
  • 2) find the area of each. Leave your answer in terms of Pi. <br> 4) find the area of each.
    11·1 answer
  • 3c = 18 do I multiply 3 by 6
    7·2 answers
  • The blue segment below is a diameter of 0. What is the length of the radius of the circle
    5·2 answers
  • In the figure shown, which theorem can be used to show that ABC = ADEF?
    7·1 answer
  • (2.4 x 10^2) (6.1 x 10^5
    10·2 answers
  • (PLEASE HELP)
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!