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Fudgin [204]
2 years ago
6

2k=ak+7 Solve for k Show your work

Mathematics
2 answers:
Zina [86]2 years ago
6 0

Answer:

k = \frac{7}{2-a}

Step-by-step explanation:

2k = ak + 7 ( subtract ak from both sides )

2k - ak = 7 ← factor out k from each term on the left side

k(2 - a) = 7 ( isolate k by dividing both sides by (2 - a) )

k = \frac{7}{2-a}

sertanlavr [38]2 years ago
3 0

Answer:

k=a+7

Step-by-step explanation:

Take 1 k away from both sides. I hope you found this useful!

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Butoxors [25]

f(x) means x = -2 if you multiply 1/2 by -2 you get -1

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3 years ago
Use the graph that shows the solution to
Luda [366]

Answer:

The solution for f(x) = g(x) are;

x = 1 and x = -1

Step-by-step explanation:

The given equations for the functions, g(x) are;

f(x) = \dfrac{1 + 2\cdot x}{x}

g(x) = 2 + x

The solution for f(x) = g(x), is given by equating the equations of the two functions as follows;

When f(x) = g(x), we have;

\dfrac{1 + 2\cdot x}{x} = 2 + x

By cross multiplication, we have;

1 + 2·x = x × (2 + x) = 2·x + x²

∴ x² + 2·x - 2·x - 1 = 0

x² - 1 = 0

(x - 1)·(x + 1) = 0

x = 1, or x = -1

f(x) = g(x) = 2 + 1 = 3, or 2 - 1 = 1

Therefore, the solution for f(x) = g(x) are;

f(x) = g(x) = 3 or 1 where x = 1 and x = -1.

6 0
3 years ago
There are 20 20 coins in a jar. Each coin is either a nickel or a quarter. If one of the coins is selected at random, the probab
sveta [45]

Answer: there are 8 quarters in the jar

Step-by-step explanation:

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The probability of selecting a nickel is 0.6. This is expressed as

0.6 = x/20

Cross multiplying, it becomes

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x = 12

Since there are 12 nickels inside the jar, then the number of quarters would be

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3 0
3 years ago
Graph Photo attached
Andreas93 [3]

p(green) =  \frac{no \: of \: green}{total \: } \\ p =  \frac{8}{40}   \times 100\% \\ p = 20\% \\
option 2
3 0
3 years ago
A block of cheese has a volume of 280 cm3 and a mass of 230 g.
Leviafan [203]

Answer:

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step-by-step explanation:

6 0
3 years ago
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