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Gemiola [76]
3 years ago
14

Does a system of linear equation always have a solution?

Mathematics
1 answer:
xxMikexx [17]3 years ago
7 0
Nope, it's not true. It can have no solution...
You might be interested in
X
sergeinik [125]

Answer:

A. x = 58°

B. x = 10m

C. a = 44°

All approximated to nearest whole number.

Step-by-step explanation:

All triangles given are right angled triangles. Therefore, we would apply the trigonometry functions to solve for each missing side and angle.

Recall: SOHCAHTOA

a. Adjacent = 4.8cm,

Hypotenuse = 9cm

Angle to find =x°

Thus, we would apply the following formula:

Cos θ = Adjacent/Hypotenuse

Cos θ = 4.8/9 = 0.5333

θ = Cos-¹(0.5333) = 57.77

x ≈ 58° (to nearest whole number)

b. Opposite side = x

Hypothenuse = 40 m

Included angle = 14°

We would use:

Sine θ = opposite/hypothenuse

Sin (14) = x/40

Multiply both sides by 40

40*sin(14) = x

40*0.2419 = x

x = 9.676 = 10 m (to nearest whole number)

c. Opposite = 87mm

Adjacent = 91mm

θ = a°

We would use:

Tan θ = opposite/adjacent

Tan θ = 87/91

Tan θ = 0.9560

θ = tan-¹(0.9560)

θ = a = 43.71

a ≈ 44° (to nearest whole number)

7 0
3 years ago
In the trapezoid below, x = [ ? ].<br> 2x+6<br> I<br> 5x=20<br> 4r+2
KonstantinChe [14]

Answer:

x = 12

Step-by-step explanation:

To get the value of x, we use the mid-segment theorem of trapezoid

The theorem is that the mid-segment is half the sum of the other two segments

We have this as

;

5x - 20 = 1/2(2x + 6 + 4x + 2)

2(5x-20) = 6x + 8

5x -20 = 3x + 4

5x -3x = 4 + 20

2x = 24

x = 24/2

x = 12

4 0
3 years ago
The graph of y=f(X) is shown below. Graph y=1/2f(x)
lubasha [3.4K]

Answer:

The grap is a partial line , showing to be negative. The y-int is -3 and the slope is -1/2

Top answer · 0 votes

So then the linear function is y = f(x) = (-1/2)X - 3 y = g(x) = 1/2 * f(x) = (-1/4)x - 3/2 y-intercept is (-1/4)(0) - 3/2 = 0 - 3/2 = -3/2 ... More

3 0
3 years ago
How do I teach my 4th grader to divide with two digits. Example 672/32 <br><br> what are the steps?
Elanso [62]
Answer/Work:
672 divided by 32
is 21 with remainder 0
= 21 R 0
= 21 0/32

Show Work:
(There are a few files that should help you see the steps of this problem, and examples (of)
 and how to do it) I hope this helps! If not, please let me know. :)


  <span><span> </span></span>

7 0
4 years ago
Read 2 more answers
I would like some help
Nitella [24]

Answer:

A. Parallel

Step-by-step explanation:

3 0
3 years ago
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