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2 years ago

Non proportional or proportional

Mathematics

1 answer:

Elan Coil [88]2 years ago

4 0

Non proportional it should be

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I’m dvmb i’ll give brainliest

pickupchik [31]

Answer:

b (-3,3)

Step-by-step explanation:

it's where the two lines intersect

hope this helps

7 0

2 years ago

On a piece of paper graph y < 2x - 3 then determine

andrezito [222]

Answer

3.5

Step-by-step explanation:

y < 2x - 3 = 3.5

2x is greater than y and y is an unknown value you can solve this by using a two step equation

5 0

3 years ago

X / 3 - (x+5) / 5 = 7

Nastasia [14]

Answer:

x= 60

Explanation:

7 0

3 years ago

Solve the simultaneous equation y-2x+1=0 and 4x^2+3y^2-2xy=7

Lapatulllka [165]

The first equation is $y-2x+1=0$

$y=2x-1$ (Equation 1)

The second equation is $4x^{2}+3y^{2}-2xy=7$ (Equation 2)

Putting the value of x from equation 1 in equation 2.

we get,

$4x^{2}+3(2x-1)^{2}-2x(2x-1)=7$

$4x^{2}+3(4x^{2}+1-4x)-4x^{2}+2x=7$

by simplifying the given equation,

$12x^{2}-10x-4=0$

$6x^{2}-5x-2=0$

Using discriminant formula,

$D=b^{2}-4ac$

$D=25-4 \times 6 \times -2 = 73$

Now the formula for solution 'x' of quadratic equation is given by:

$x=\frac{-b+\sqrt{D}}{2a} and x=\frac{-b-\sqrt{D}}{2a}$

$x=\frac{5+\sqrt{73}}{12} and x=\frac{5-\sqrt{73}}{12}$

Hence, these are the required solutions.

8 0

3 years ago

(cos2a *cos 4a+ sin 2a*sin 4a)/sin4a

lyudmila [28]

Answer:

Step-by-step explanation:

(cos 4a*cos 2a+sin 4a*sin 2a)/sin 4a

=[cos (4a-2a)]/sin 4a

=(cos 2a)/sin 4a

=(cos 2a) /(2 sin 2a cos 2a)

=1/(2 sin 2a)

=1/2 csc 2a

4 0

2 years ago