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
UkoKoshka [18]
3 years ago
11

One of Marianna's homework problems was to solve the equation below.

Mathematics
1 answer:
Strike441 [17]3 years ago
3 0

Answer:

<h2>Marianna is incorrect because x2</h2><h2>2x13 can be factored into two binomials</h2>

Step-by-step explanation:

ax^2+bx+c = 0

x=−1+√14 or x=−1−√14

discriminant=56

completing square x=−1+√14 or x=−1−√14

Now, we can solve each term for  

x=-2 she is incorrect

x(x+2)=0

Now, we can solve each term for  

0:  

x=0

- no other work needed,

and

x+2=0

x+2-2=0-2

x+0=-2

<u>x=-2</u>

<h3>Brainliest please!</h3>

You might be interested in
What are the coefficients in<br> 3x-2+5y
Norma-Jean [14]

Answer:

Step-by-step explanation:

Move −2.

3x+5y−2

3 0
2 years ago
L'Airbus A380 consomme approximativement 15 600 litres de kérosène à
sasho [114]

Answer:

7 800 pour 1/2 heure

Step-by-step explanation:

15 600/2=7 800

7 0
2 years ago
My sisters age is greater than 40 but less than 50. Her age is divisible by 2, 4, 8, and 12. How old is my sister?
Elodia [21]

Answer:

48

Step-by-step explanation:

48 is divisble by all of them

5 0
2 years ago
Read 2 more answers
A water tank already contained 24 gallons of water before a pump was switched to fill it. The pump started at 10:00 am and by 10
grigory [225]

Answer:

The equation to represent  the amount of water that the tank contains (W) after the pump was working for T hours can be given as:

W=32T+24

Step-by-step explanation:

Given:

Water tank initially contained = 24 gallons of water

The pump to fill the tank was switched to fill it.

From 10:00 AM to 10:30 AM the tank contained 40 gallons of water.

By 1:00 PM the tank contained 120 gallons of water.

To write an equation  which will tell the amount of water that the tank contains (W) after the pump was working for T hours

Solution:

Initially, gallons of water in tank = 24

From 10:00 AM to 10:30 AM the tank had 40 gallons of water.

Thus, in half an hour the pump filled = 40-24 = 16 gallons

Using unitary method:

If in \frac{1}{2} of an hour water filled = 16 gallons

So, in 1 hour the water filled will be = 16\times 2 = 32 gallons

In 3 hours the water filled will be = 32\times 3 = 96 gallons

Thus, by 1:00 PM the water in the tank will be = 96+24 = 120 gallons

This confirms the data given for 1:00 PM.

This shows that the rate at  which the pump fills the tank is 32 gallons of water per hour.

The equation to represent  the amount of water that the tank contains (W) after the pump was working for T hours can be given as:

W=32T+24

4 0
2 years ago
A/-6 + 8 = 12. a = <br>Please help!!! Thanks so much! <br><br>~kweenie~
irina [24]

Answer:

a = -24

Step-by-step explanation:

-a/6 +8 = 12

Subtract 8 from each side

-a/6 +8-8 = 12 -8

-a/6 = 4

Multiply by -6 on each side

-a/6 * -6 = 4*-6

a = -24

8 0
2 years ago
Other questions:
  • Answer please I am in need of help​
    13·1 answer
  • Jasmine is baking and selling cupcakes for $15 per dozen.She would like to make more than $120 in cupcake sales. Which number li
    6·1 answer
  • Find a polynomial with a degree of 3, and the zeros 1,7, &amp; -4 with no other zeros.
    8·1 answer
  • The area of Tracy's backyard is 1 1/3 acres she plants a garden that take up 1/3 of the backyard what area in acres of the garde
    13·1 answer
  • Pls tell me some answers for this
    9·2 answers
  • 8 1/2 + 7 2/3 + 4 1/2
    10·1 answer
  • The lengths of the sides of a triangle are in the extended ratio 4:7:10. The perimeter of the triangle is 105 cm. What are the l
    9·1 answer
  • Solve for x. x² = 144
    13·2 answers
  • A sweater which originally cost $ 38.40 is on sale 25% off. Carmen has gift card worth $15 off, but the gift card can only be us
    14·1 answer
  • Please help me it’s urgent!
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!