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
choli [55]
2 years ago
13

X 5.2.19

Mathematics
1 answer:
Semmy [17]2 years ago
7 0

Answer:

Step-by-step explanation:

y = ax² + bx + c

Plug the points into the equation to get a system of 3 equations with 3 unknowns a, b, and c.

-27 = 4a - 2b + c

-42 = 9a + 3b + c

-12 = a + b + c

(a,b,c) = (-4,1,-9)

y = -4x² + x - 9

You might be interested in
Can someone please help me?
Ket [755]

Answer:

what is the question

Step-by-step explanation:

5 0
3 years ago
Round 452 to the nearest hundred
Anna007 [38]

Answer:

500

Step-by-step explanation:


6 0
3 years ago
What is x+y=8 and 5x+3y=34 graphed on the same graph
expeople1 [14]
To help you graph this, get y alone in both equations. If you don't have a graphing calculator, use the Desmos graphing calculator online.

So, you will end up graphing this:
y=8-x
y=(34/3)-(5/3)x

They will meet at (5,3)

8 0
3 years ago
Pls 24 n 3-4 am not understanding them can u solve them pls
Lynna [10]
Can you re-upload the question.
4 0
3 years ago
Answer ASAP, Will give brainliest
erastova [34]

Answer:

Step-by-step explanation:

1) ABCD is a trapezium. AB ║ CD

∠ADC + ∠DAB  = 180°  { Co interior angles}

110° + ∠DAB = 180

         ∠DAB = 180 -110

∠DAB = 70°

2) Sum of all angles of trapezium = 360°

∠A + ∠B + ∠DCB + ∠D = 360

70° + 50° + ∠DCB + 110° = 360

                 230 + ∠DCB = 360

                            ∠DCB = 360 - 230

∠DCB = 130°

3) For finding the height, use Pythagorean theorem

height² + base² = hypotenuse²

      height² + 6² = 10²

      height² + 36 =100

               height² = 100 - 36

              height² = 64

               height = √64

height = 8 m

4) a = AB = x m

  b = 9 m

h = height = 8 m

Area of trapezium = 120 m²

\frac{(a+b)*h}{2}\\\\  = 120

\frac{(x+9)*8}{2} =120\\\\\\(x +9)*4 = 120

x + 9 = 120/4

x + 9 = 30

    x = 30 - 9

x = 21 m

AB = 21m

                             

7 0
3 years ago
Other questions:
  • Which of these situations would best be represented using a quadratic function: the distance driven on a road trip, the path of
    13·1 answer
  • Consider the tables.
    5·1 answer
  • NeNe tripled a cookie recipe for a party. The original recipe called for 4.25 cups of sugar. NeNe tripled the sugar amount and p
    12·2 answers
  • find the mean, median, and mode of the data set. round to the nearest tenth. test scores on a math exam: 88,89,65,62,83,63,74,64
    9·1 answer
  • Need help with math problems​
    9·1 answer
  • Triangle EFG is similar to triangle HIJ. Find the measure of side JH. Round your
    9·1 answer
  • Does anyone know the answers to these?
    5·2 answers
  • What is a simplified form of the expression 2(–x + 2) + 3x?
    8·2 answers
  • Please help me
    10·2 answers
  • Use the number line to find the sum of 1.5+(-5). A. -3.5 B.6.5 C.-6.5 D.3.5
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!