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azamat
3 years ago
13

4x +6y =0

Mathematics
2 answers:
PSYCHO15rus [73]3 years ago
4 0
Here, x - 2y = 14
x = 14 + 2y

Now, substitute this value into first equation, 
4x + 6y = 0
4(14 + 2y) + 6y = 0
56 + 8y + 6y = 0
14y = -56
y = -56/14
y = -4

Substitute it into second equation, 
x = 14 + 2(-4)
x = 14 - 8
x = 6

In short, Your Answer would be: (6, -4)

Hope this helps!
stiks02 [169]3 years ago
3 0
Subsitute
first solve for a single variable
solve for x in the 2nd ones

x-2y=14
add 2y
x=2y+14
sub that for x


4(2y+14)+6y=0
8y+56+6y=0
14y+56=0
minus 56 both sides
14y=-56
divide both sides by 14
y=-4
sub back

x=2y+14
x=2(-4)+14
x=-8+14
x=6

(x,y)
(6,-4)
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Triangle X Y Z is shown. Angle Y X Z is a right angle. The length of Y X is 12 inches and the length of X Z is 10 inches. Angle
mario62 [17]

The best approximation for the measure of angle XYZ is 39.8° ⇒ 2nd answer

Step-by-step explanation:

Let us revise the trigonometry ratios in the right triangle ABC, where B is the right angle, AC is the hypotenuse, AB and BC are the legs of the triangle

The trigonometry ratios of the angle BAC, the opposite side to this angle is BC and the adjacent side to it is AB are

  • sin(BAC)=\frac{opposite}{hypotenuse}=\frac{BC}{AC}
  • cos(BAC)=\frac{adjacent}{hypotenuse}=\frac{AB}{AC}
  • tan(BAC)=\frac{opposite}{adjacent}=\frac{BC}{AB}

In Δ XYZ

∵ ∠ YXZ is a right angle

∴ The hypotenuse is YZ

∵ The adjacent side to ∠XYZ is XY

∵ The opposite side to ∠XYZ is XZ

∵ YX = 12 units

∵ XZ = 10 units

- Use tan ratio to find the measure of the angle because you

   have the adjacent and opposite sides of the angle XYZ

∵ m∠XYZ is x

∵ tan(x)=\frac{XZ}{XY}

∴ tan(x)=\frac{10}{12}

- To find x use the inverse of tan(x)

∵ x=tan^{-1}(\frac{10}{12})

∴ x = 39.8°

∴ m∠XYZ = 39.81°

The best approximation for the measure of angle XYZ is 39.8°

Learn more:

You can learn more about the trigonometry ratios in brainly.com/question/4924817

#LearnwithBrainly

4 0
3 years ago
Read 2 more answers
okay so i have to tutor a bunch of little kids in algebra and i want ideas for a fun, easy game that can be played by 4 or more
Firlakuza [10]
Have the kids answer questions, if correct they get to shoot a small ball into a garbage can for extra points! FUN!
~Hope This Helps! <3
4 0
3 years ago
Can any one solve this.?
SpyIntel [72]

Answer:

x = 1

Step-by-step explanation:

Expand brackets

2x + 16 - 4x = 10x + 4

Rearrange so that x's are on one side and whole numbers are on the other

2x - 4x - 10x = 4 - 16

Simplify

-12x = -12

Make x on its own

x = 1

3 0
3 years ago
Trigonometry problem help please and thank you find angle wxz photo of problem is attached ​
Ksenya-84 [330]

Answer:

wxz = 25°

Step-by-step explanation:

way = 90

zxy = 65

So wxz = 25

Hope it helps you

5 0
3 years ago
Find the missing length of each right triangle
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Answer:

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Step-by-step explanation:

3 0
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