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alexgriva [62]
3 years ago
13

Using elimination process what is the answer for 14x+2y=18 -7x-4=9 use steps

Mathematics
1 answer:
AlekseyPX3 years ago
8 0
Step 1; multiple equation 2 by -2: 14x+8y=-18
step2: subtract this new equation from equation 1 to eliminate x:
2y-8y=18-(-18)
-6y=36
y=-6
step 3: substitute y=6 in equation 2: -7x-4*(-6)=9, -7x=-15, x=15/7
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Suppose<br> cos(π/2−x) =3/5, cos x =4/5<br> find sin, tan, csc, sec, cot
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Cos (π/2 - x) = sin x = 3/5
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Write the inequality represented by the graph below.
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y > -x + 3

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2 years ago
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3 years ago
What is the total radian measure of the angle the minute hand travels in 4 full rotations?
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8 0
3 years ago
Read 2 more answers
Answers are needed urgently..ty​
SIZIF [17.4K]

Angle <QAB is =15° because the opposite angles of an isosceles triangle are equal.

The length of the straight line AB = 80cm

<h3>Calculation of angle of a triangle</h3>

The angle at a point = 360°

Angle AQB= 360 - 210° = 150

But the angle that makes up a triangle= 180°

180-150= 30°

But <QAB = <QBA because triangle AQB is an isosceles triangle.

30/2 = 15°

To calculate the length of the straight line the following is carried out using the sine laws.

a/ sina, = b sinb

a= 8cm, sin a { sin 15)

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make b the subject formula;

8/sin15= b/sin 150

b= 8 × sin 150/sin 15

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Learn more about isosceles triangle here:

brainly.com/question/25812711

#SPJ1

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