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aleksklad [387]

3 years ago

7

Please help me solve thisss

1 answer:

Lorico [155]3 years ago

6 0

The Vertical angle for <HKJ is <OKL or #12

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Solve 2x2 + 12x − 14 = 0 by completing the square.

andrey2020 [161]

$2x^2+12x-14=0\ \ \ \ |divide\ both\ sides\ by\ 2\\\\x^2+6x-7=0\\\\x^2+2x\cdot3=7\ \ \ \ |add\ 3^2\ to\ both\ sides\\\\x^2+2x\cdot3+3^2=7+3^2\\\\(x+3)^2=7+9\\\\(x+3)^2=16\iff x+3=-\sqrt{16}\ or\ x+3=\sqrt{16}\\\\x+3=-4\ or\ x+3=4\\\\x=-4-3\ or\ x=4-3\\\\\boxed{x=-7\ or\ x=1}$

3 0

3 years ago

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Find an equation for the nth term of the arithmetic sequence. <br> -3, -5, -7, -9, ...

tankabanditka [31]

Answer:

a(n) = -3 - 2(n-1)

Step-by-step explanation:

The most general formula for the nth term of an arithmetic sequence (such as this sequence is) is

a(n) = a(1) + c(n-1), where c is the common difference.

Here a(1) = -3 and c = -2.

Thus,

a(n) = -3 - 2(n-1).

7 0

3 years ago

I’m supposed to simplify; however, I’m absolutely clueless on how to simplify a radical. Can anyone help?

anyanavicka [17]

Your answer simplified should be
$-6 \sqrt{30}$

7 0

3 years ago

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Calculate the value of the expression (Explain in words)<br><br> -30-(-20)

oee [108]

Answer:

-10

Step-by-step explanation:

when you subract a negative the minus signs negate each other

8 0

3 years ago

Can someone help me solve this ... please

lana66690 [7]

Answer:

t>28

Step-by-step explanation:

work is shown and pictured

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3 years ago