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
timama [110]
3 years ago
13

Find the roots. 2x^2 + 4x - 5 =0

Mathematics
1 answer:
xz_007 [3.2K]3 years ago
8 0

Answer:

-1\pm\dfrac{\sqrt{14}}{2}

Step-by-step explanation:

2x^2+4x-5=0

Using the quadratic formula:

x=\dfrac{-4\pm \sqrt{16+40}}{4}=-1\pm\dfrac{\sqrt{14}}{2}

Hope this helps!

You might be interested in
How to graph a proportional relationship and calculate the unit rate.
poizon [28]

Answer:

The best way to show and explain direct proportional relationships is by graphing two sets of related quantities. If the relation is proportional, the graph will form a straight line that passes through the origin.

7 0
3 years ago
Chapter one course 2
Marysya12 [62]
What you need help with
8 0
3 years ago
Ahmed bought a car for $5000 which is the 80% of the original price of the car. Calculate the original price of the car.
WITCHER [35]

Answer:

$6250

Step-by-step explanation:

5000 = 80%

5000/80=62.5

62.5*100=6250

8 0
3 years ago
Read 2 more answers
What is 8 more than twice the sum of a number and 3 is the same as -6?
a_sh-v [17]
This can be solver by creating a small equation with x being the number and solving for x. The equation would be 8 + 2( x + 3 ) = -6
Solve for x:
8 + 2( x + 3 ) = -6
Distribute the 2
8+ (2x+6)=-6
Subtract 8
2x+6= -14
Add 6
2x= 8
Divide by 2
x=4

So the number you are looking for is 4

I hope this helps!
8 0
3 years ago
A purchaser of electric relays buys from two suppliers, A and B. Supplier A supplies two of every three relays used by the compa
inessss [21]

Answer:

The probability that at most 38 of the 60 relays are from supplier A is P(X≤38)=0.3409.

Step-by-step explanation:

We can model this question with a binomial distribution random variable.

The sample size is n=60.

The probability that the relay come from supplier A is p=2/3 for any relay.

If we use a normal aproximation, we have the mean and standard deviation:

\mu=np=60*(2/3)=40\\\\\sigma=\sqrt{npq}=\sqrt{60*(2/3)*(1/3)} =3.65

The probability that at most 38 of the 60 relays are from supplier A is P(X≤38)=0.3409:

P(X\leq38)=P(X

5 0
2 years ago
Other questions:
  • It cost $36 per person if 75 people rent the bus. How much will it cost per person if 100 people rent.
    9·1 answer
  •      Brandon is 6 times as old as Cora. In 4 years, Brandon will be only twice as old as
    7·1 answer
  • What times 20 equals 70
    8·1 answer
  • What is the value of y? Assume that the line is tangent to the circle
    6·1 answer
  • A farmer has a square plot of land he needs defense he walked to the diagonal of the plot of land and found it to be 80 yards ho
    6·2 answers
  • I need help on this one too and im done! someone please help me!​
    12·1 answer
  • The 450 juniors at East HS drink a total of 1500 cartons of milk per 5-day week. If the average senior drinks milk at the same r
    13·1 answer
  • The length of this rectangle is 2sqrt19, the width of the rectangle is sqrt19. The value of its perimeter is?
    11·1 answer
  • It takes $8$ cups of chocolate chips to make $12$ cookies. How many cups of chocolate chips will it take to make $15$ cookies? P
    11·1 answer
  • (1) 9/8 + 5/6=
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!