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
Korvikt [17]
3 years ago
10

What are the solutions to 2x^2-4x-30=0

Mathematics
1 answer:
oksano4ka [1.4K]3 years ago
5 0

Answer:

ill try  2x2-4x-30=0  

Two solutions were found :

x = 5

x = -3

Step by step solution :

Step  1  :

Equation at the end of step  1  :

 (2x2 -  4x) -  30  = 0

You might be interested in
Find the sum
lakkis [162]

Answer:

Numerator = 2(b^2+a^2)    or equivalently 2b^2+2a^2

Denominator = (b+a)^2*(b-a), or equivalently b^3+ab^2-a^2b0-a^3

Step-by-step explanation:

Let

S = 2b/(b+a)^2 + 2a/(b^2-a^2)   factor denominator

= 2b/(b+a)^2 + 2a/((b+a)(b-a))     factor denominators

= 1/(b+a) ( 2b/(b+a) + 2a/(b-a))    find common denominator

= 1/(b+a) ((2b*(b-a) + 2a*(b+a))/((b+a)(b-a))   expand

= 1/(b+a)(2b^2-2ab+2ab+2a^2)/((b+a)(b-a))  simplify & factor

= 2/(b+a)(b^2+a^2)/((b+a)(b-a))  simplify & rearrange

= 2(b^2+a^2)/((b+a)^2(b-a))

Numerator = 2(b^2+a^2)    or equivalently 2b^2+2a^2

Denominator = (b+a)^2*(b-a), or equivalently b^3+ab^2-a^2b0-a^3

4 0
2 years ago
Imma give brainliest just help me
ruslelena [56]

Answer: 3:4

Step-by-step explanation: because the ratio of a :b is 2:3 which means b is 3 . And the ratio of a:c is 3 :4 which means c is 4.

And 3:4 is in simplest form .

Hope it helps.

5 0
2 years ago
Read 2 more answers
A prop for a school play is a sphere that will be hung from the ceiling. The surface area of the sphere is 5 024 cm'. If the sur
denis23 [38]

Answer:

The radius of the sphere, to the nearest cm:

r\approx 20 cm

Step-by-step explanation:

The surface area of a sphere is given by the formula

A = 4πr²

where r is the radius of the sphere.

Given

  • The surface area of sphere A = 5024 cm²

The radius of the sphere can be determined such as

A\:=\:4\pi r^2

r\:=\:\frac{1}{2}\sqrt{\frac{A}{\pi }}

Plug in Surface Area of sphere =  5024, π = 3.14 in the formula

\:r\:=\:\frac{1}{2}\sqrt{\frac{5024}{3.14}}\:\:

r\approx 20 cm

Therefore, the radius of the sphere, to the nearest cm:

r\approx 20 cm

3 0
2 years ago
Calculate the theoretical probability of each of the following events:
horsena [70]

Answer:

There is a 1/3 chance it lands on each section

Step-by-step explanation:

4 0
3 years ago
HELP MEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
goldfiish [28.3K]
Setup is
y = k/x
8 = k/3
k = 24

Now use 6 for y
6 = 24/x
x = 24/6 = 4 or A
5 0
3 years ago
Other questions:
  • There are 30 students. 8 students have cats, 15 students have dogs, and 5 students have both a cat and a dog. How many students
    11·1 answer
  • Which is the best approximate solution of the system of linear equations y = 1.5x – 1 and y = 1?
    12·2 answers
  • CAN ANYONE ANSWER THIS CORRECTLY???
    14·1 answer
  • The temperature at a point (x, y) on a flat metal plate is given by t(x, y) = 23/(8 + x2 + y2), where t is measured in °c and x,
    12·1 answer
  • A shop owner offered a 20%discount off the regular price of a mirror.The amount of the discount is $3.00
    13·2 answers
  • Help pls 20 points <br><br><br> What is the value of x?<br> Enter your answer in the box.
    11·1 answer
  • Please help me solve for x
    12·1 answer
  • Compare the words mistrust and distrust. How are they alike? How are they different? ​
    8·2 answers
  • Which equation represents a proportional relationship?
    7·1 answer
  • George earns $8 1/4 an hours. He is paid 1 1/2 times the regular rate when he works over time. How much does he make per hours w
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!