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Vlada [557]
3 years ago
5

F(x) = 9x-7. f o f (2)

Mathematics
1 answer:
Serga [27]3 years ago
8 0

Answer: 11

Step-by-step explanation: First, 9 times 2 is 18. Then subtract 18-7 which equals 11.

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In one full day, a kudzu vine can grow 15 inches in length. How many inches per hour is this?
Rus_ich [418]
1.66666666667 inches per hour
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4 years ago
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The equation x2 - 9 = 0 has<br> real solution(s).<br> DONE
Andru [333]

Answer:

{-3, 3}

Step-by-step explanation:

x^2 - 9 = 0 can be written in factored form as (x -3)(x + 3) = 0.  Letting each factor equal zero separately and solving for x, we get x:  {-3, 3}

5 0
3 years ago
What is the equation of the line that passes through the point 4, -6 and has a slope of -3
zheka24 [161]
Y = mx + b. Use this equation for most linear functions. Enter the information that is given to you.
- 6 =  - 3(4) + b
Multiply the -3 and 4 to get 12.
-6 =  - 12 + b
Now divide the -12 from both sides.
\frac{ - 6}{ - 12}  =   \frac{ - 12}{ - 12}  + b
-12 cancels out on the right side and your left with
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Now re-enter the info back into the formula.
y =  - 3x  -  \frac{1}{2}
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4 0
3 years ago
In geometry, Heron's formula (sometimes called Hero's formula), named after Hero of Alexandria, gives the area of a triangle by
uysha [10]

Answer:

C) 6.495\: ft^2

Step-by-step explanation:

a = 7 ft, b = 3 ft, c = 5 ft (Given)

Therefore, a + b + c = 7 + 3 + 5 = 15 ft

Let's calculate semi Perimeter of the triangle which is given by s

s =\frac{a+b+c}{2}=\frac{15}{2} = 7.5 \: ft

Now, by Heron's formula, area of triangle ABC is given as:

A(\triangle ABC) =\sqrt{s(s-a) (s-b)(s-c)}

\therefore A(\triangle ABC) =\sqrt{7.5(7.5-7) (7.5-3)(7.5-5)}

\therefore A(\triangle ABC) =\sqrt{7.5(0.5) (4.5)(2.5)}

\therefore A(\triangle ABC) =\sqrt{42.1875}

\therefore A(\triangle ABC) =6.49519053

\therefore A(\triangle ABC) =6.495\: ft^2

8 0
3 years ago
PLZ HELP!!!!!!!!!!!!! WILL GIVE BRAINLIST IF CORRECT
kozerog [31]
Donut = $0.14 tax so $2.14 and tea = $0.07 tax so $1.07
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3 years ago
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