2 years ago

Which expression is equivalent to 8+18a−2+6a ?

Mathematics

1 answer:

Reika [66]2 years ago

8 0

I'm pretty sure it's the first choice, if needed explanation let me know

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Which of the following is the same as 8.4x10²

Marta_Voda [28]

Answer:

840

Step-by-step explanation:

8.4x10^2

8.4x100

move the decimal to the right for the amount of zeros :)

840

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3 years ago

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Rewrite each fraction with a denominator of 10 7/2=? 3/5=?

motikmotik

The answer is 35/10 and 6/10

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2 years ago

A cylinder and a cone each have a radius of 3 in. and a height of 8 in. What is the ratio of the volume of the cone to the volum

a_sh-v [17]

I think for this answer it would be the third option. This is because to find the volume of both figures, the formula would be v=bh. they both have the same formulas and are both in proportion to each other. once you calculate the volume you will come to find that the answer is the same. this would make it 1 to 1

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3 years ago

Please help :)))))))))))))

masya89 [10]

Tbh I can’t see that

7 0

2 years ago

(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

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