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4 years ago

1. For the exponential function y = 2^x:

Mathematics

1 answer:

storchak [24]4 years ago

8 0

Answer:

Step-by-step explanation:

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Pls only do this if yk it because i’m giving correct answer brainliest! :))

Leno4ka [110]

Answer:

$x=2+\frac{1}{2}\sqrt[]{21}$

$x=2-\frac{1}{2}\sqrt{{21}$

Step-by-step explanation:

$4x^2-16x-26=-21$

Add 21 on both sides.

$4x^2-16x-26+21=-21+21$

$4x^2-16x-5=0$

a=4

b=-16

c=-5

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

$x=\frac{-(-16)\frac{+}{}\sqrt[]{(-16)^2-4(4)(-5)} }{2(4)}$

$x=\frac{16\frac{+}{}\sqrt[]{256+80} }{8}$

$x=\frac{16\frac{+}{}\sqrt[]{336} }{8}$

$x=\frac{16\frac{+}{}\sqrt[]{2^2*2^2*21} }{8}$

$x=\frac{16\frac{+}{}2*2\sqrt[]{21} }{8}$

$x=\frac{16\frac{+}{}4\sqrt[]{21} }{8}$

---------------------------------------------------------------------------

$x=\frac{16}{8}+\frac{4\sqrt[]{21}}{8}$

$x=2+\frac{1}{2}\sqrt[]{21}$

---------------------------------------------------------------------------

$x=\frac{16}{8}-\frac{4\sqrt[]{21}}{8}\\x=2-\frac{1}{2}\sqrt{{21}$

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3 years ago

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Max travel 2 miles and Jason travel 20 miles.together they travel

elena55 [62]

All together max and jason travel a total of 22 miles

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4 years ago

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A line passes through the point (-8, 6) and has a slope of -5/4.

Margarita [4]

Answer:

y = -5/4x - 4

Step-by-step explanation:

Plug in 6 for y and -8 for x. Then solve for b or "y-intercept". You should get -4

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3 years ago

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Plese help me brainliest

nikdorinn [45]

1- 1 2/5
2- 4 1/2
3- 1 1/8
4- 1 5/6
5- 12/17

Have a good day

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3 years ago

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I just have one question left you don’t need to simplify if you give the answer

Ugo [173]

It is either 400 or negative 400 because if you devide 12 by .03 it is 400

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3 years ago

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