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Vedmedyk [2.9K]
2 years ago
11

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!! I CANNOT RETAKE THIS!!

Mathematics
1 answer:
cupoosta [38]2 years ago
8 0

x =  \frac{ - b \pm \sqrt{ {b}^{2}  - 4ac} }{2a}  \\  \\ x =  \frac{8 \pm \sqrt{ {8}^{2} - 4 \times 2 \times 5 } }{2 \times 2}

x =  \frac{8 \pm \sqrt{24} }{4}  \\  \\ x =  \frac{8 \pm2 \sqrt{6} }{4}

x = 2 \pm  \frac{ \sqrt{6} }{2}  \\  \\ x = 2  \pm  \sqrt{1.5}  \\  \\ x = 2 +  \sqrt{1.5}  \:  \: and \:  \:  \: 2 -  \sqrt{1.5}

\textbf{\red{Your answers are correct.}}
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The graph shows the function f(x) = 2*<br> What is the value of xwhen f(x) = 8?
soldi70 [24.7K]

Answer:

x=3

Step-by-step explanation:

f(x) = 2^x

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8 = 2^x

Rewriting 8 as 2^3

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The bases are the same so the exponents are the same

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3 0
3 years ago
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its 76 degrees fahrenheit at the 6000-foot level of a mountain, and 49 degrees Fahrenheit at the 12000-foot level of the mountai
brilliants [131]

T = \frac{-9}{2}x + 103 is the linear equation to find the temperature T at an elevation x on the mountain, where x is in thousands of feet.

<em><u>Solution:</u></em>

The linear equation in slope intercept form is given as:

T = cx + k ------ (i)

Where "t" is the temperature at an elevation x

And x is in thousands of feet

<em><u>Given that its 76 degrees fahrenheit at the 6000-foot level of a mountain</u></em>

Given, when c = 6 thousand ft and T = 76^{\circ} fahrenheit

This implies,

From (i)

76 = c(6) + k

76 = 6c + k

⇒ k = 76 - 6c  ----- (ii)

<em><u>Given that 49 degrees Fahrenheit at the 12000-foot level of the mountain</u></em>

Given, when c = 12 thousand ft and T = 49^{\circ} fahrenheit

This implies,

From (i)

49 = c(12) + k

49 = 12c + k

Substitute (ii) in above equation

49 = 12c + (76 - 6c)

49 = 12c + 76 - 6c

49 - 76 = 6c

6c = -27

c = \frac{-9}{2}

Substituting the value of c in (ii) we get

k = 76 - 6( \frac{-9}{2})\\\\k = 76 + 27 = 103

Substituting the value of c and k in (i)

T = \frac{-9}{2}x + 103

Where "x" is in thousands of feet

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5 0
3 years ago
Shade 0.25 of the design,. Write a fraction in simplest form to represent the shaded part of the design
wlad13 [49]
There are 16 smaller triangles within the main large one. .25=1/4, so your fraction is 1/4. 1/4 of 16 is 4, because 4+4+4+4=16. So colour in 4 triangles. Hope this helps!
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3 years ago
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Help with this one!!
shepuryov [24]
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F(x) = x + 1
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flip values of x and y in each equation, then solve for y:


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``````````````````````````````````````````````````````````

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