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
Luda [366]
3 years ago
8

ASAP WILL MARK BRAINLYEST answer these two please!

Mathematics
1 answer:
Trava [24]3 years ago
3 0

19.\\y=3x^2\\a=3,\ b=0,\ c=0\\\\\dfrac{-b}{2a}=\dfrac{-0}{2(3)=0\to x=0\\\\3x^2=0\ \ \ \ |:3\\\\x^2=0\to x=0

20.\\y=x^2-x-2\\a=1,\ b=-1,\ c=-2\\\\\dfrac{-b}{2a}=\dfrac{-(-1)}{2(1)}=\dfrac{1}{2}\to x=\dfrac{1}{2}\\\\x^2-x-2=0\\\\x^2-2x+x-2=0\\\\x(x-2)+1(x-2)=0\\\\(x-2)(x+1)=0\iff x-2=0\ \vee\ x+1=0\\\\x=2\ \vee\ x=-1

You might be interested in
If a building was placed at coordinates (-5,5), what would be the new coordinates if rotated 270° counterclockwise around the or
Brums [2.3K]

The rule for a 270° counterclockwise rotation is (x, y) ---> (y, -x).

So if you rotated (-5,5) 270° counterclockwise around the origin the new coordinates would be (-5,-5).

Hope this Helps!!

6 0
3 years ago
Read 2 more answers
Use the replacement set {3, 4, 9} to find the solution of the equation below.<br> 3n−18=9
Mrac [35]

Answer:

n=9

Step-by-step explanation:

3n-18=9

3n+18= +18

3n=27

3(9)=27

n=9

5 0
3 years ago
Jimmy loaded three bags of sand into his wheelbarrow. The bags weighed 24
Rudik [331]
The whole numbers add up to 100. So now we are left with 1/2 or 0.5, 3/5 or .60, and 1/8 or .125. Those add up to 1.225 so the amount of sand in pounds in the wheelbarrow is 101.225. Hope I helped! If you have any questions just leave a comment.
3 0
3 years ago
Emilio and friends are in a submarine 500 feet below sea level. They continue to dive 35 feet each hour for 7 hours.
katovenus [111]
You would write the equation out as x=35x+500

You substitute x for 7 so it’s x= 35(7)+500

So the answer will be 745 dollars
4 0
2 years ago
I need help please.
just olya [345]

Answer:

Not real.

Step-by-step explanation:

The root is not a real number  . A negative  has no real root.

7 0
3 years ago
Other questions:
  • Which of the symbols correctly relates the two numbers?<br><br> 100 ? 20
    10·2 answers
  • If y is directly proportional to x and Y = 40 when x=4 what is the value of x when y =23
    14·1 answer
  • Combine the like terms to create an equivalent expression: <br> 2s+(−4s)=?
    7·1 answer
  • What is the product? Enter your answer as a fraction, in simplified form, in the box. −4/5⋅10/16
    8·2 answers
  • Solve the equation Z-19=34
    14·1 answer
  • If a circle has a diameter of 22<br> centimeters, what is the radius?
    13·1 answer
  • Rashard is a running back on his football team. He rushed for 418 yards in
    12·1 answer
  • ILL GIVE BRAINLEST, please no links and explain please:)
    11·1 answer
  • The junior senator can work his way through
    12·1 answer
  • Because it is three-dimensional, a form has these three spatial measurements: height, width, and ________.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!