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
Ksivusya [100]
3 years ago
12

Y = -2x2 + 10 y = -2x – 2

Mathematics
2 answers:
soldier1979 [14.2K]3 years ago
6 0

Answer:

Step-by-step explanation:

hello :

y = -2x² + 10

y = -2x – 2

-2x²+10 = -2x-2

2x²-2x -12 = 0

x²-x-6 = 0

(x-3)(x+2)=0

x-3=0 or x+2=0

x=3 or x=-2

but  y = -2x-2

if ; x=3     y = -2(3)-2 =-8

if : x=-2     y=-2(-2)-2=2

two solutions : (3 , -8)  and (-2 , 2)

34kurt3 years ago
4 0

Answer:

x = 6

y = - 14

Step-by-step explanation:

\left \{y=-2x2 + 10y} \atop {y=-2x -2}} \right.

  1. -2x × 2 + 10 = - 2x - 2
  2. x = 6
  3. y = -2 × 6 - 2 = - 14
You might be interested in
The dimensions of a triangle are multiplied by 1/4. The area of the smaller triangle can be found by multiplying the area of the
Deffense [45]
Multiply it by 1/4 because the dimensions are already 1/4
3 0
3 years ago
simplify each of the following fractions 1a)2/x4 1b)3x+9/x+5 1c) 14x^3-x^2+9x-2/x^2-16 1d)3x/6x^2-x-2
Vlad [161]
<span>step  1  :</span><span> 6 Simplify —— x2 </span><span>Equation at the end of step  1  :</span><span> 10 6 (((((x2)+3x)-————)-2x)-15)——)+6x)+9) (x2)(((((x^2)x2 </span><span>Step  2  :</span>Rewriting the whole as an Equivalent Fraction :

<span> 2.1 </span>  Subtracting a fraction from a whole 

Rewrite the whole as a fraction using <span> <span>x2</span> </span> as the denominator :

<span> x2 + x (x2 + x) • x2 x2 + x = —————— = ————————————— 1 x2 </span>

<span>Equivalent fraction : </span>The fraction thus generated looks different but has the same value as the whole 

<span>Common denominator : </span>The equivalent fraction and the other fraction involved in the calculation share the same denominator

<span>Step  3  :</span>Pulling out like terms :

<span> 3.1 </span>    Pull out like factors :

  <span> x2 + x</span>  =   x • (x + 1) 

Adding fractions that have a common denominator :

<span> 3.2 </span>      Adding up the two equivalent fractions 
Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

<span> x • (x+1) • x2 - (6) x4 + x3 - 6 ———————————————————— = ——————————— x2 x2 </span><span>Equation at the end of step  3  :</span><span> 10 (x4+x3-6) (((((x2)+3x)-————)-2x)-15)—————————+6x)+9) (x2)(( x2 </span><span>Step  4  :</span>Rewriting the whole as an Equivalent Fraction :

<span> 4.1 </span>  Adding a whole to a fraction 

Rewrite the whole as a fraction using <span> <span>x2</span> </span> as the denominator :

<span> 6x 6x • x2 6x = —— = ——————— 1 x2 </span>
4 0
3 years ago
Find each percent of change. Round to the nearest whole percent if necessary. State whether the percent of change is an increase
KATRIN_1 [288]

Answer:

Percent of change: 20% (rounded) It is an increase

Step-by-step explanation:

7 0
4 years ago
Read 2 more answers
What is the solution to the following equation x+y=6 x-y=2
Lelechka [254]
X+y = 6
x-y = 2

Add both equations, 
2x = 8
x = 4

Substitute it in equation 1, 
4+y = 6
y = 6-4 = 2

In short, x = 4 & y = 2

Hope this helps!
4 0
4 years ago
Line AB and Line BC are tangent to P. What is the value of x?<br><br> 73<br> 107<br> 117<br> 146
spayn [35]
Is there a picture too?
7 0
3 years ago
Other questions:
  • The ratio of the number of boys to the number of girls in the class is 1:6. Which statement must describe the class?
    10·2 answers
  • A rectangular garden is 5 feet long and 3 feet wide. A second rectangular garden has dimensions that are double the dimensions o
    8·1 answer
  • What equation represents a parabola that opens UP with the vertex at 2,4
    11·1 answer
  • Find m&lt;1 <br> Please please
    9·1 answer
  • CAN SOMEONE PLEASE HELP ME ON THIS
    6·1 answer
  • Complete the sentences to describe the function f(x) = 2x^2+16x/16x^3-x the function is discontinus at
    6·2 answers
  • A sales agent is paid 4000$ every month and a commission of 0.8% on total sales. If he receives 5192$ at the end of the month, f
    15·2 answers
  • give a pair of alternate interior angles, a pair of corresponding angles and a pair of alternate exterior angles.
    9·1 answer
  • Q13 A gardener needs to buy compost to fill this tub.
    12·1 answer
  • PLEASE HELP ME TO ANSWER THIS QUESTION THANK YOU!
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!