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4 years ago

2. Give a real-life situation for the product 4 • (- 2). 20 POINTS PLZ HELP

Mathematics

1 answer:

grandymaker [24]4 years ago

7 0

Answer:

A diver can descend 2 feet every minute. If the diver descends for four minutes, where will the diver be in relation to the surface?

Step-by-step explanation:

If the surface is 0 and the diver descends a total of eight feet, then the diver would be at a position of -8 feet.

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What is the correct answer???

Lostsunrise [7]

Option D: $\frac{2}{5}$ is the x-coordinate

Explanation:

It is given that the coordinates of the line segment are A(3,2) and B(6,11).

Since, the line is partitioned by the point C by the ratio AC : BC = 2 : 3

The distance between the x-coordinates is 3 units.

To determine the value of the x-coordinate for point C, let us divide the value of x-coordinate from the ratio divided by the sum of ratio.

The value of x-coordinate from the ratio is 2.

Sum of the ratio is 2 +3 = 5

Thus,

The x - coordinate = value of x-coordinate from the ratio / Sum of ratio = 2/5

Substituting the values, we have,

The x - coordinate of the Point C = $\frac{2}{5}$

Thus, Option D is the correct answer.

4 0

3 years ago

Evaluate the expression below when y = 3. If needed, answer as a fraction or a decimal.<br> y⋅5y+2

Anika [276]

Answer:

-10

Step-by-step explanation:

y-5y+2

=3-5 x 3+2

Using the rule of BODMAS

=3-15+2

=3-13

= -10

<h2><em>OladipoSeun</em><em>♡˖꒰ᵕ༚ᵕ⑅꒱</em></h2>

3 0

3 years ago

Need help plz!!!?!?!?!?

Kipish [7]

Answer:

54yd

Step-by-step explanation:

Area for the rectangle=8×6

=48yrd

area for the triangle=1/2×4×3

=6yd

Total area=48+6=54yd

3 0

3 years ago

===<br> Graph y = 1/3x - 1

Marat540 [252]

Graph graph graph graph graph graph graph graph graph

3 0

3 years ago

Ed and Taylor work together on a group quiz that has 20 multiple-choice questions, each with four choices for the possible answe

MissTica

Answer:

a. p = 0.25

b. n = 10, p = 0.25.

c. n = 10, p = 0.25.

d. n = 20, p = 0.25.

Step-by-step explanation:

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

a. For any single question on the quiz, what is p = chance of a correct guess?

4 options, 1 of which is correct. So

$p = \frac{1}{4} = 0.25$

So p = 0.25.

b. Let X = number of correct guesses that Isabelle makes. What are the values of n and p for the binomial distribution that describes X?

Should be Ed here.

Ed guesses answers for the first 10 questions

This means that $n = 10$ .

p is the same, so n = 10, p = 0.25.

c. Let Y = number of correct guesses that Taylor makes. What are the values of n and p for the binomial distribution that describes Y?

10 question, so $n = 10$ , p is the same.

d. Consider X + Y = total correct guesses that Isabelle and Taylor make. What are the values of n and p for the binomial distribution that describes X + Y?

20 questions, so $n = 20$

10 for Ed, with 0.25 probability, 10 for Taylor, with 0.25 probability. So

$p = \frac{10}{20}*0.25 + \frac{10}{20}*0.25 = 0.125 + 0.125 = 0.25$

So n = 20, p = 0.25.

3 0

3 years ago