3 years ago

Distributive property of multiplication 98 times 7

Mathematics

1 answer:

horsena [70]3 years ago

6 0

Answer:

686

Step-by-step explanation:

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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

May someone please help me ASAP

Ivenika [448]

Answer:

84+n=342

Step-by-step explanation:

you would subtract 84 from 342 to find the width since it is perimeter.

3 0

3 years ago

OKAY I GOING HAVE MEATEL BREAK DOWN IF SOMEONE DOES NOT HELP ME THID DUE TODAY AT 11:59PM AND I SO STRESS.

quester [9]

Answer:

A. ?

B. ?

C. ?

1. Different

2. Same

3. Not always

4. multiplying, same, different

5. Don't know

6. and 7. don't have any students or anything so I can't answer that

Step-by-step explanation:

I kinda went off what I knew

Hey at least I tried

4 0

3 years ago

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PLEASE HELP FAST!!!!!!!!!

tresset_1 [31]

B is definitely the answer

4 0

4 years ago

Find the point-slope form of the line with the given slope which passes through the indicated slope. Slope = - 8/9 line passes t

kiruha [24]

Y - 8 =(-8/9)(x - 3)

y - 24/3 = (-8/9)x + 8/3

y = (-8/9)x + 32/3

6 0

3 years ago

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