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Svet_ta [14]
3 years ago
14

What is the solution to 4/a+5/3a<3

Mathematics
1 answer:
scoray [572]3 years ago
3 0
\dfrac{4}{a}+\dfrac{5}{3a} < 3\ \ \ |-3\ \ \ assume\ a\neq0\\\\\dfrac{3\cdot4}{3a}+\dfrac{5}{3a}-\dfrac{3a\cdot3}{3a} < 0\\\\\dfrac{12+5-9a}{3a} < 0\\\\\dfrac{-9a+17}{3a} < 0\iff 3a(-9a+17) < 0\\\\3a=0\to a=0\\\\-9a+17=0\to a=\dfrac{17}{9}
Look at the picture.
Answer:\ a\in\left(0;\ \dfrac{17}{9}\right)

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I need help . Plz help me
Gekata [30.6K]
The mean is the same thing as the average. To find the average, add all the numbers up (aka find the sum of the numbers) and divide by how many numbers there is:
average =  \frac{sum \: of  \: numbers}{\# \:  of  \: numbers}

So the sum of your numbers is: -6 + 2 + 5 + -7 + -11 + -6 = -23. And there are 6 numbers total.
That means average =  \frac{-23}{6} = -3.833333 ≈ -3.8

Your final answer is -3.8
5 0
4 years ago
Please answer these questions! will mark brainlist!
timofeeve [1]

<u><em>1</em><em>s</em><em>t</em><em> </em><em>photo....</em></u>

<em>Yes</em>

<em>Explanation</em>

All when divided becomes 1/3 , so it is proportional...

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Yes<em> </em>

<em>Explai</em><em>n</em><em>ation</em>

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7 0
3 years ago
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Inessa [10]
Que quieres decir con esto
3 0
2 years ago
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What is (3x+8) + (6x+2) in simplest form
barxatty [35]
(3x+8) + (6x+2) \\ \\ 3x + 8 + 6x + 2 \ / \ simplify \\ \\ (3x + 6x) + 8 + 2 \ / \ gather \ like \ terms \\ \\ 9x + 8 + 2 \ / \ simplify \\ \\ 9x + 10 \ / \ simplify \\ \\ Answer: \fbox {9x + 10}
7 0
3 years ago
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What is the value of x in the solution to this system of equations?
liberstina [14]

Answer:

x = 11

Step-by-step explanation:

Given the expression;

5x+2y=67 ...1

x=3y−7 ....2

Substitute 2 into 1

5(3y-7)+2y = 67

15y - 35 + 2y = 67

17y = 67+35

17y = 102

y = 102/17

y =6

Recall that x = 3y - 7

x = 3(6) - 7

x = 18 - 7

x = 11

Hence the value of x is 11

6 0
3 years ago
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