3 years ago

How many solutions does 0.5(x−3)=3x−2.5 have?

Mathematics

1 answer:

Yanka [14]3 years ago

6 0

Answer:

Step-by-step explanation:

mark brainliest pls

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after reading a book for english class, 100 students were asked whether or not they enjoyed it. Nine twenty-fifths of the class

ruslelena [56]

99 16/25 or 2491/25
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4 years ago

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Gnoma [55]

1.) D
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3 years ago

Plz help me with this math question plz thank u if u do

Zielflug [23.3K]

1 cup will be left. That is because each batch uses

$2 \frac{3}{4}$

cups.

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3 years ago

Solve for x in the equation 2 x squared + 3 x minus 7 = x squared + 5 x + 39.

Nastasia [14]

Answer:

$\implies x=1\pm \sqrt{47}$

Step-by-step explanation:

We want to solve for x in $2x^2+3x-7=x^2+5x+39$

You need to group and combine like terms and write in standard form:

$2x^2-x^2+3x-5x-7-39=0$

$\imples x^2-2x-46=0$

By comparing to $ax^2+bx+c=0$ , we a=1,b=-2 and c=-46

The solution can be obtained using the quadratic formula.

$x=\frac{-b\pm \sqrt{b^2-4ac} }{2a}$

We substitute the coefficients to get:

$x=\frac{--2\pm \sqrt{(-2)^2-4*1*-46} }{2*1}$

$x=\frac{2\pm \sqrt{4+4*46} }{2}$

$x=\frac{2\pm \sqrt{4*47} }{2}$

$x=\frac{2\pm2\sqrt{47} }{2}$

$\implies x=1\pm \sqrt{47}$

The last choice is correct

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