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aev [14]
3 years ago
9

What is X in this equation?

Mathematics
1 answer:
oee [108]3 years ago
8 0

Answer:

B) 44

Step-by-step explanation:

x + 54 + 82 = 180

x + 136 = 180

x = 180 - 136

x = 44

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Plz help me plzzzzzzzzzz
Effectus [21]

Answer:

I think the answer is 7;

Step-by-step explanation:

All i did was subtract Q11 from all 4 of its sides;

11=4=7

7 0
3 years ago
On the set of axes below, draw the graph of y=x^2-4x-1
never [62]

9514 1404 393

Answer:

  axis of symmetry: x = 2

  see below for a graph

Step-by-step explanation:

You can complete the square to put the equation in vertex form.

  y = (x^2 -4x +4) -1 -4

  y = (x -2)^2 -5 . . . . . . vertex is (2, -5)

The equation of the axis of symmetry is the equation of the vertical line through the vertex:

  x = 2 . . . . . axis of symmetry

__

Points on the graph are easily found by using integer values on either side of x=2. Points on one side of the axis of symmetry are mirrored on the other side of it.

5 0
3 years ago
All quadrilateral have at least 1 pair of matching angles
muminat

Answer:

Yes, Every Quadrilateral do have 2 matching angle. It is one of the main feature of quadrilateral.

Step-by-step explanation:

8 0
2 years ago
Which of the following is not a true statement? *
ANEK [815]

Answer:

b. The boundary line of y < 2x - 3 is not a solid line.

Step-by-step explanation:

It's a linear inequality thus its boundary line must be a solid line.

5 0
3 years ago
The polynomial -x^3-x^2+12x represents the volume of a rectangular aqautic tank in cubic feet. the length of the tank is (x+4).
Verizon [17]

Answer:

<h2>a. It should look for 3 linear factors.</h2><h2>b. There are 3 dimensions.</h2><h2>c. x = 1.7</h2><h2>d. Maximum value is 12.597</h2>

Step-by-step explanation:

a.

-x^{3} - x^{2} + 12 \timesx = -x^{3} - 4 \timesx^{2} + 3 \timesx^{2} +12 \timesx = -(x + 4) \timesx^{2} + 3 \timesx \times(x + 4) = (x + 4) \timesx \times (x + 3)

Hence the factorized form of the volume of the poly is (x + 4) \timesx \times (x + 3)

3 linear factors should needed to be look for.

b.

The 3 dimensions are (x + 4), x, (x + 3).

c.

Let, f(x) = -x^{3} - x^{2} + 12 \timesx

Now, \frac{d  f(x)}{dx} = -3 \timesx^{2} -2 \timesx + 12

Let f1(x) = -3 \timesx^{2} -2 \timesx + 12 and f2(x) = \frac{d f1(x)}{dx} = -3 \timesx -2

The value will be maximum, if f1(x) = 0 and f2(x) < 0.

f1(x) = 0\\ 3 \timesx^{2} + 2 \timesx -12 = 0\\ x = \frac{- 2 + \sqrt{2^{2} + 4 \times3 \times12} }{2 \times3} , \frac{- 2 - \sqrt{2^{2} + 4 \times3 \times12} }{2 \times3}

x = 1.69 ≅ 1.7 or x = -2.36 ≅ -2.4

Now f2(1.7) < 0.

At x = 1.7, the volume will be maximum.

d.

The maximum value is f(1.7) = 12.597(approximately)

8 0
3 years ago
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