3 years ago

Using the quadratic formula to solve x2 + 20 = 2x, what are the values of x?

Mathematics

1 answer:

Andru [333]3 years ago

5 0

Answer:......................................

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Solve for x: -4(x + 10) - 6 = -3(x - 2

evablogger [386]

-4(x+10)-6=-3(x-2)
-4x-40-6=-3x+6
-4x-46=-3x+6
-4x-46+46=-3x+6+46
-4x=-3x+52
-4x+3x=-3x+3x+52
-x=52
(-x/-1)=(52/-1)
x=-52

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3 years ago

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3 years ago

Which of the following is equivalent to (1/2)^-2t

Zepler [3.9K]

Answer:

Choice (3) $\left(2^2\right)^t$ is correct.

Step-by-step explanation:

Given expression is $\left(\frac{1}{2}\right)^{-2t}$

Now we need to simplify this and check which of the given choices best match with it.

$\left(\frac{1}{2}\right)^{-2t}$

$=\left(\frac{1}{2^1}\right)^{-2t}$

$=\left(2^{-1}\right)^{-2t}$ {using formula $=\frac{1}{x^m}=x^{-m}$ }

$=\left(2^{-1}\right)^{-2t}$ {using formula $=\left(x^m\right)^n=x^{\left(m\cdot n\right)}$ }

$=2^{\left(-1\right)\left(-2t\right)}$

$=2^{2t}$

$=\left(2^2\right)^t$ {using formula $=\left(x^m\right)^n=x^{\left(m\cdot n\right)}$ }

Hence choice (3) $\left(2^2\right)^t$ is correct.

8 0

3 years ago

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7.<br> 81,46,73,32, 54,81, 20, 41<br> Median

sukhopar [10]

Answer:

Step-by-step explanation:

20, 32, 41, 46, 54, 73, 81, 81

46+54= 100

100 divided by 2= 50

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A teacher has a bag of 100 unit cubes. She gives an equal Number of cubes to each of the seven groups in her class. She gives ea

LenaWriter [7]

Answer:

7*14=98 and another 7 cant into it or it will be over 100 so there will be 2 cubes left over.

Step-by-step explanation:

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3 years ago