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3 years ago

How do you solve 2/3x -10=-12

Mathematics

1 answer:

marta [7]3 years ago

5 0

Answer:

$x=-3$

Step-by-step explanation:

Question: $\frac{2}{3x} -10=-12$

1) Add 10 to both sides:

$\frac{2}{3x} =-2$

2) Multiply both sides by the reciprocal of 2/3: (3/2)

$x=-2*\frac{3}{2}$

$x=\frac{-6}{2}$

3) Simplify the fraction:

$x=-3$

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3 years ago

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3 years ago

Find the solutions of the quadratic equation -9c² +2 +3 = 0.

Tresset [83]

Given that,

An equation : -9c² +2c +3 = 0

To find,

Find the value of x.

Solution,

We have, -9c² +2c +3 = 0

We can solve it using the formula as follows :

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

Here, a = -9, b = 2 and c =3

Put the values,

$c=\dfrac{-2\pm \sqrt{(2)^2-4(-9)(3)}}{2(-9)}\\\\c=\dfrac{-2+\sqrt{(2)^{2}-4(-9)(3)}}{2(-9)}, \dfrac{-2-\sqrt{(2)^{2}-4(-9)(3)}}{2(-9)}\\\\c=-0.47, 0.69$

So, the solution are -0.47 and 0.69.

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2 years ago

Mario was making cookies. He mixed 2½ cups of flour, 1¼ cups of sugar and ½ cup of brown sugar together in a bowl. How many cups

STatiana [176]

Answer:

4 1/4

Step-by-step explanation:

2 1/2 + 1 1/4 + 1/2 = 5/2 + 5/4 + 1/2

LCM = 4

5/2 x 2/2 = 10/4

5/4 = 5/4

1/2 x 2/2 = 2/4

10/4 + 5/4 + 2/4 = 17/4

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Therefore he put 4 1/4 cups altogether.

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2 years ago

Simplify the following by collecting like terms<br> 9x+x-4x

Mamont248 [21]

Answer:

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they're all like terms so we just add and subtract

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2 years ago