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 30-foot silo casts a 20-foot shadow, what is the approximate measure from the tip of the shadow to the top of the silo?
KATRIN_1 [288]

9514 1404 393

Answer:

  (d)  36 feet

Step-by-step explanation:

Use your sense of geometry.

The hypotenuse of a right triangle will never be less than the longest side, and will never be greater than 1.5 times the longest side*.

That means the only reasonable answer choices will be between 30 and 45 feet. There is only one such choice.

The measure is about 36 feet.

__

If you like, you can find a more exact value using the Pythagorean theorem. The distance d of interest is ...

  d^2 = 20^2 +30^2 = 1300

  d = √1300 = 10√13 ≈ 36.0555 ≈ 36 . . . feet

_____

* The longest hypotenuse will be √2 ≈ 1.4142 times the longest right triangle leg when the two legs are equal length.

3 0
3 years ago
You had 25$ to spend on seven pencils. After buying them you had 4$. How much did each pencil cost?
Olegator [25]

Answer:

I think the answer would be $3

Step-by-step explanation:

8 0
3 years ago
What is the range of f(x) = – 4?
Andre45 [30]
The answer is -4. The range is the y-value and when you  say f(x) that is the same thing as y, so if f(x) = -4 that means y = -4 which means the range is -4.
5 0
3 years ago
Read 2 more answers
What's the q1 and q2????
Evgen [1.6K]

Answer:

Q1-298

Q2-422

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Anyone know how to expand 5p(p-3)
Katyanochek1 [597]
I believe what your asking is just multiplying it together so 5p(p-3) would be 5p2-15p. the p2 is p squared or a little 2 on top of the p. Hope I helped! 
6 0
3 years ago
Other questions:
  • Jacob strode up 12 steps in 6 seconds to reach his apartment on the second floor. How many steps did he climb in 4 seconds? Whic
    6·1 answer
  • Joan has raised $306 by selling 34 equally priced boxes of chocolate for the team fund-raiser. Which of the following equations
    5·2 answers
  • How to solve step by step 4a - 5 = 10 -a
    13·2 answers
  • Suppose that 20% of the subscribers of a cable television company watch the shopping channel at least once a week. The cable com
    7·1 answer
  • Please help I don’t know how to write it so I did pictures instead.
    10·1 answer
  • Nathan is jogging on a circular trail in a state park. The diameter of the trail is 650 meters. What approximate distance ( circ
    8·1 answer
  • Find the area of the kite with diagonals a= 12 and b=9
    9·2 answers
  • What is the equation of the line on the graph?
    11·2 answers
  • Find the circumference of the circle with radius 28 cm.<br><br>​
    5·2 answers
  • Helppppp pleaseeee c: for brainliest
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!