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3 years ago

Plzzz help! will give branliest if you can do this one!!! i also need help with other math problems

Mathematics

2 answers:

Colt1911 [192]3 years ago

8 0

Answer:

The answer is d

Step-by-step explanation:

kotykmax [81]3 years ago

4 0

I believe it’s the last answer. Rotation of 180 degrees clockwise with a dilation of 5.

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Simplify the expression.<br>-7/9-5-10

sergij07 [2.7K]

Answer:

-142/9

Step-by-step explanation:

$-\frac{7}{9}-5-10\\\\-\frac{7}{9}-15\\\\ -15=-\frac{15*9}{9}=- \frac{135}{9}\\\\-\frac{7}{9}- \frac{135}{9}=\frac{-7-135}{9}=-\frac{142}{9}$

6 0

4 years ago

Simplify 60 over 1 and 1/4

Pepsi [2]

60 over 1 would be 60.

1/4 is already to its lowest.
If you want percents, decimals, ratios.
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1:4

3 0

4 years ago

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I don't understand this

Anna11 [10]

Answer:

I'm not 100% sure, but it might be "dynamic"

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3 years ago

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Solve using the quadratic formula:<br> 3x=2x^2-2

Tomtit [17]

Answer:

$x=2\\x=-\frac{1}{2}$

Step-by-step explanation:

1) Move terms to the left side.

$3x=2x^{2} -2\\3x-(2x^{2}-2)=0$

2) Distribute.

$3x-(2x^{2} -2)=0\\3x-2x^{2} +2=0$

3) Rearrange terms.

$3x-2x^{2} +2=0\\-2x^{2} +3x+2=0$

4) Common factor.

$-2x^{2} +3x+2=0\\-(2x^{2} -3x-2)=0$

5) Divide both sides of the equation by the same term.

$-(2x^{2} -3x-2)=0\\2x^{2} -3x-2=0$

6) Use the quadratic formula.

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

Once in standard form, identify a, b, and c from the original equation and plug them into the quadratic formula.

$2x^{2} -3x-2=0\\a=2\\b=-3\\c=-2$

$x=\frac{-(-3)+\sqrt{(-3)^{2} -4*2(-2)} }{2*2}$

7) Simplify.

Evaluate the exponent

$x=\frac{3+\sqrt{(-3)^{2}-4*2(-2) } }{2*2}$

$x=\frac{3+\sqrt{9-4*2(-2)} }{2*2}$

Multiply the numbers

$x=\frac{3+\sqrt{9-4*2(-2)} }{2*2}$

$x=\frac{3+\sqrt{9+16} }{2*2}$

Add the numbers

$x=\frac{3+\sqrt{9+16} }{2*2}$

$x=\frac{3+\sqrt{25} }{2*2}$

Evaluate the square root

$x=\frac{3+\sqrt{25} }{2*2} \\x=\frac{3+5}{2*2}$

Multiply the numbers

$x=\frac{3+5}{2*2}$

$x=\frac{3+5}{4}$

8) Seperate the equations.

To solve for the unknown variable, separate into two equations: one with a plus and the other with a minus.

$x=\frac{3+5}{4}$

$x=\frac{3-5}{4}$

9) Solve.

Rearrange and isolate the variable to find each solution.

$x=2\\x=-\frac{1}{2}$

7 0

3 years ago

Help plz i’ll give extra points

kaheart [24]

Which question are you talking about?

7 0

3 years ago

Read 2 more answers