Needs to be in scientific notation. please help me

Mathematics

1 answer:

Ray Of Light [21]3 years ago

8 0

243 is the answer because you move the decimal point two places to the right.

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(9x+2)(4x^2+35x-9)=0

pychu [463]

$(9x+2)*(4x^2+35x-9)=0$

we can make this...

$9x+2=0$

and

$4x^2+35x-9=0$

then...

$9x+2=0$

$\boxed{x=-\frac{2}{9}}$

$4x^2+35x-9=0$

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

$x=\frac{-35\pm\sqrt{35^2-4*4*(-9)}}{2*4}$

$x=\frac{-35\pm\sqrt{1369}}{8}$

$x=\frac{-35\pm37}{8}$

$x_1=\frac{-35+37}{8}=\frac{1}{4}$

$x_2=\frac{-35-37}{8}=-9$

$\boxed{\boxed{S=\{\frac{1}{4},-\frac{2}{9},-9\}}}$

I'm sure about my answer, don't matter the order...

4 0

3 years ago

Read 2 more answers

A care care company sells 45in. Upholstery fabric for car restoration. Art bought 7 1/4 yd and 12 9/10 yd for two car projects.

Troyanec [42]

Answer: the number of yards that art bought is 20 3/20 yards

Step-by-step explanation:

Art bought 7 1/4 yd and 12 9/10 yd for two car projects. We would convert both measurements from mixed fraction to improper fraction before adding.

Converting 7 1/4 yd to improper fraction, it becomes 29/4

Converting 12 9/10 yd to improper fraction, it becomes 129/10 yd

Adding both measurements, it becomes

29/4 + 129/10 = (145 + 258)/20 = 403/20yds