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3 years ago

What is the solution of the equation 3x + x + 8 = 4? a. -1 c. 2 b. 1 d. 4

Mathematics

1 answer:

s344n2d4d5 [400]3 years ago

5 0

Answer:

a. -1

Step-by-step explanation:

Simply the equation: 3x+x+8=4

1st step: 4x+8=4

2nd step: 4x=4-8

3rd step: x= $\frac{-4}{4}$

4th step: x= -1

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Step-by-step explanation:

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1 year ago

How much change will you get back if you bought three $0.78 chocolate bars and paid with a 5$ bill

Crazy boy [7]

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2 years ago

Read 2 more answers

Determine if 0.949449444944449444449 rational or irrational and give a reason for answer.

Kamila [148]

Answer:

irrational if it's more after this number but if it stops at the last 9 then it's a rational number

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Step-by-step explanation:

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2 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.

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2 years ago

What is the remainder of 3,368,008 divided by 5574<br><br> I'm looking for the REMAINDER

Mkey [24]

I think it might be

3,362,461

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2 years ago