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2 years ago

Express the vector (4,-6) in terms of the standard unit vectors i and j

Mathematics

1 answer:

Aliun [14]2 years ago

8 0

Four, -6 in terms of standard unit factors I NJ makes no sense

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The probability of getting a head when a biased coin is tossed is 2/5. The coin is tossed three times. Find the following probab

NeTakaya

Answer:

P(three tails) = 27/125 or 21.6%

P(two tails followed by one head) = 18/125 or 14.4%.

Step-by-step explanation:

1. Let's review the information provided to us to answer the questions correctly:

Probability of getting a head when a biased coin is tossed = 2/5

therefore,

Probability of getting a tails when a biased coin is tossed = 3/5

2. Find the following probabilities and select the correct solution.

P(three tails) =

3/5 * 3/5 * 3/5 = 27/125 or 21.6%

P(two tails followed by one head) =

3/5 * 3/5 * 2/5 = 18/125 or 14.4%.

6 0

2 years ago

If α and β are the zeroes of the polynomial 2x2 + 3x – 7, then find a polynomial whose zeroes are and .

Drupady [299]

Answer:

$\frac{-\sqrt{65} - 3 }{4}, \frac{\sqrt{65} + 3}{4}$

Step-by-step explanation:

Since we cannot factor the expression, we must use quadratic formula: $x = \frac{-b +/-\sqrt{b^2 - 4ac} }{2a}$

Plug in a for 2, b for 3, and c for -7 and you should find your roots.

5 0

2 years ago

Thirty-five percent of what number is 17.5?

Naddika [18.5K]

I believe its 50 because 0.35x50=17.5 (35%=0.35)

4 0

3 years ago

What is the solution to equation 3 1/2 + p = 5 1/4?

Tatiana [17]

The value of p is 1 3/4

Look at the attached picture

Hope it will help you

Good luck on your assignment

8 0

3 years ago

Read 2 more answers

Can someone help me with this one

rewona [7]

4 over 5 or y=4/5x+0

5 0

3 years ago