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
professor190 [17]
3 years ago
8

Use the Quadratic Formula to solve the equation. -2x^2 - 5x + 5 = 0

Mathematics
2 answers:
Alika [10]3 years ago
8 0

Answer:

x = \frac{5 \pm \sqrt{ 65 }}{-4}.

Step-by-step explanation:

The Quadratic Formula for a second degree polynomial ax^{2} +bx+c=0 is a formula for the values of its solution i.e. for finding the values of x.

It is given by, x = \frac{-b \pm\sqrt{b^{2}-4ac }}{2a}.

Now, we have the given quadratic equation -2x^{2}-5x+5 = 0,

which gives a = -2 , b = -5 , c = 5.

Substituting the value of a, b , c in the above formula, we get

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

x = \frac{-(-5) \pm \sqrt{ 25 + 40 }}{-4}.

x = \frac{5 \pm \sqrt{ 65 }}{-4}.

Hence, the solution of the given quadratic equation is x = \frac{5 \pm \sqrt{ 65 }}{-4}.

olga2289 [7]3 years ago
7 0
The answer is going to be in the picture because trying to make fractions with this is too difficult. :D

You might be interested in
The perimeter of a square is given as 6c-4(0-5). What expression gives the length of one side of the square?​
Nataly [62]

Answer:

1.5c - 5

Step-by-step explanation:

Divide the expression by 4 because a square has 4 sides of equal length.

6c - 4(0-5) = 6c - 20;

(6c - 20) / 4 = 1.5c - 5

7 0
3 years ago
Read 2 more answers
Analyze the diagram below and complete the instructions that follow.
Jlenok [28]

Step-by-step explanation:

scale \: factor =  \frac{7}{28}  =  \frac{1}{4}  \\

ratio \:of \:surface \:areas\\=\frac{2[5\times 7 + 7\times 3+3\times 5]}{2[20\times 28+ 28\times 12+12\times 20] }\\\\=\frac{[35 + 21+15]}{[560+ 336+240] }\\\\=\frac{71}{1136}\\\\=\frac{1}{16}\\\\= 1\: :\: 16

3 0
3 years ago
Find the product of 4x 4 and enter it in the space provided. Notice that a
pochemuha

Answer:

16

Step-by-step explanation:

4+4=8

8+8=16

4 0
3 years ago
Read 2 more answers
Solve 2 (3d + 3) = 7 + 6d.
Leni [432]

First distribute in the 2 on the left side to get 6d+6=7+6d

Then, you would combine the variables to be on one side of the equation by doing -6d. However, this would cancel out the d by leaving you with 0d+6=7. That is the same thing as saying 6=7.

The answer to this equation is no solution because 6 is NOT equal to 7.

4 0
3 years ago
Read 2 more answers
Suppose your salary in 2014 is $60,000. Assuming an annual inflation rate of 8%, what salary do you need to earn in 2017 in orde
Westkost [7]

sorry I messed up dont look at me

5 0
3 years ago
Other questions:
  • What is a research proposal ​
    11·1 answer
  • One of the solutions to x^2-2x-15=0 is x=-3. What is the other solution?
    8·2 answers
  • Would a 36-ounce box for $3.72 be a better bargain than a 3-pound box for $5.36?
    15·1 answer
  • Velvet fabric costs $11.49 a yard. Yvette buys 9.3 yards. Yvette's estimated cost of the velvet is
    13·1 answer
  • The water in a pool evaporates at a rate of 16 gallons per week. What integer represents the change in the number of gallons of
    9·1 answer
  • First 2 answer right is marked brainliest!!
    15·2 answers
  • How many edges does a hexagonal prism have​
    15·2 answers
  • Help resolve this please
    10·2 answers
  • April is making necklaces using beads
    13·1 answer
  • Carol buys a house for £234 900
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!