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Aleks04 [339]
3 years ago
11

Factor. x2+3x−18 Enter your answer in the parentheses x2+3x−18= ( )( )

Mathematics
2 answers:
Ostrovityanka [42]3 years ago
7 0
X^2 + 3x - 18

2 numbers that multiplied give you -18
Those same 2 numbers have to add up to 3

6 x -3 = -18
6 + -3 = 3

(X + 6) (x - 3)
Anna71 [15]3 years ago
5 0
Since this is simple integer factors.  For a quadratic of the form ax^2+bx+c, there will be two values, j and k, which satisfy to conditions:

jk=ac=-18 and j+k=b=3, so j and k must be 6 and -3

So factored this is:  (x+6)(x-3)
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Graph the hyperbola with equation quantity x minus 1 squared divided by 49 minus the quantity of y plus 3 squared divided by 9 e
Sliva [168]

Answer:

See attached diagram

Step-by-step explanation:

You are given the equation of hyperbola

\dfrac{(x-1)^2}{49}-\dfrac{(y+3)^2}{9}=1

From this equation,

  • the center of hyperbola is at point (1,-3);
  • the real semi-axes a^2=49\Rightarrow a=7;
  • the imaginary semi-axes b^2=9\Rightarrow b=3.

Draw two parallel lines x=1 and y=-3 (they intersect at the center of hyperbola), then on horizontal line match two hyperbola's vertices (7 units to the left and 7 units to the right from the center). Then draw two branches of hyperbola (one in negative direction and one in positive direction).

3 0
4 years ago
Find the surface area of 8 meters high 12 meters width an 12 meters length​
docker41 [41]

Answer:

672m^2

Step-by-step explanation:

A=2(wl+hl+hw)=2*(12*12+8*12+8*12)=672m^2

5 0
3 years ago
Value of h<br> please help me, I don't understand
Greeley [361]

Answer: h = 14.1 ft

Step-by-step explanation:

The given triangle is an isosceles right angle triangle because the two sides or legs of the triangle are equal. To determine h, we would apply Pythagoras theorem which is expressed as

Hypotenuse² = opposite side² + adjacent side²

Hypotenuse = 20ft

opposite side = adjacent side = h feet

Therefore

20² = h² + h²

400 = 2h²

h² = 400/2 = 200

Taking square root of both sides, it becomes

h = √200

h = 14.1 ft

8 0
3 years ago
Please help need soon please add step by step thank you
tigry1 [53]

Answer:

x = 60

Step-by-step explanation:

The two angles shown here are known as corresponding angles. This means they both equal the same amount of degrees. Knowing this, we can set up an equation:

2x + 15 = 135

2x = 120

x = 60

Therefore, x = 60

You can check your answer by substituting the answer for x:

2(60) + 15 = 135

120 + 15 = 135

135 = 135

8 0
3 years ago
Find the zeros of the function
Anarel [89]

Answer:

lesser: -1

Greater: 2

Step-by-step explanation:

We need to figure out what values of x make it equal to 0

because it's all being mulitplied we just need one parathenses to equal 0

so we can set them equal to 0

which means we have

x-2=0

3x+3=0

Solve for x and get

2

-1

6 0
3 years ago
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