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3 years ago

2k-1-5k+6=0. Find the value of k

Mathematics

1 answer:

Lorico [155]3 years ago

3 0

Answer:

k = 5/3

Step-by-step explanation:

Solve for k:

5 - 3 k = 0

Subtract 5 from both sides:

(5 - 5) - 3 k = -5

5 - 5 = 0:

-3 k = -5

Divide both sides of -3 k = -5 by -3:

(-3 k)/(-3) = (-5)/(-3)

(-3)/(-3) = 1:

k = (-5)/(-3)

Multiply numerator and denominator of (-5)/(-3) by -1:

Answer: k = 5/3

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What is the probability that 6 rolls of a fair die will show four exactly 5 times?

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Answer:

very less

Step-by-step explanation:

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3 years ago

What is the surface area of a rectangular prism that has these dimensions? 2 cm x 3 cm x 5 cm?

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3 years ago

The probability distribution for the random variable x follows. x f(x) 20 0.20 25 0.15 30 0.30 35 0.35 (a) Is this probability d

Damm [24]

Answer:

(a) The probability distribution is valid.

(b) The probability that x = 30 is 0.30.

Step-by-step explanation:

The probability distribution of the random variable X is:

x: 20 | 25 | 30 | 35

f (x): 0.20 | 0.15 | 0.30 | 0.35

(a)

The properties of a probability distribution are:

0 ≤ P (X) ≤ 1
∑ P (X) = 1

All the probability value are more than 0 and less than 1.

Compute the sum of all the probabilities as follows:

$\sum P(X)=0.20+0.15+0.30+0.35=1$

The sum of all probabilities is 1.

Thus, the probability distribution is valid.

(b)

Consider the probability distribution table.

The probability of X = 30 is,

P (X = 30) = 0.30.

Thus, the probability that x = 30 is 0.30.

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3 years ago

Which value makes the equation true? □+0.34=2.34

Nataly [62]

Answer:

2.00

Step-by-step explanation:

let the empty box be the variable n. n+0.34=2.34

subtract .34 from both sides

n=2.00

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2 years ago

Read 2 more answers