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Alexeev081 [22]
3 years ago
15

What is the expected number of pets for a student in his class?

Mathematics
1 answer:
lana [24]3 years ago
7 0

Answer:

A) about 1 pet

Step-by-step explanation:

Total the products of number of pets and their probability.

... 0×0.4 +1×0.3 +2×0.25 +3×0.05

... = 0 +0.3 +0.5 +0.15 = 0.95 . . . . . about 1

___

We assume that "3 or more" will be closer to 3 than to 15, a number that would raise the expected value to more than 1.5.

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Please help! Find the equation of the line (graph provided in attached picture) Use exact numbers. y =_ x+_ ( _ represent blanks
Dennis_Churaev [7]

Answer:

y = \frac{3}{4}x - 2

Step-by-step explanation:

Equation of a line is given as y = mx + b

Where,

m = slope of the line = \frac{y_2 - y_1}{x_2 - x_1}

b = y-intercept, which is the value at the point where the line intercepts the y-axis. At this point, x = 0.

Let's find m and b to derive the equation for the line.

m = \frac{y_2 - y_1}{x_2 - x_1}

Use the coordinate pair of any two points on the line. Let's use the following,

(0, -2) = (x_1, y_1) => on the line, when x = 0, y = -2

(4, 1) = (x_2, y_2) => on the line, when x = 4, y = 1

Plug in the values and solve for m

m = \frac{1 - (-2)}{4 - 0}

m = \frac{1 + 2}{4}

m = \frac{3}{4}

b = -2 (the line intercepts the y-axis at this point)

Our equation would be =>

y = mx + b

y = \frac{3}{4}x + (-2)

y = \frac{3}{4}x - 2

5 0
4 years ago
Writing and Evaluating an Algebraic Expression Try it five more than the product of two and a number, decreased by seven; evalua
Mkey [24]

Answer:

7

Step-by-step explanation:

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5 0
3 years ago
the measures of the angles of a triangle are 50 degrees, 35 degrees, and 95 degrees. What is the measure of the largest exterior
Anton [14]
Jeidbv. Dhd.l jdbdh
7 0
4 years ago
Help with geometry please! will mark brainliest
Vesna [10]
1. The segment LO bisects one of the angles of the triangle shown in the figure attached, and divide the segment NM in two segments: NO and OM. Therefore, you must apply the Triangle Angle Bisector Theorem, which is shown below:

 LN/LM=NO/OM

 LN=10
 LM=18
 NO=4
 OM=x (The value you want to find)

 2. When you substitute this values in LN/LM=NO/OM, you have:

 10/18=4/x
 10x=(18)(4)
 x=(18)(4)/10
 x=72/10

 3. Finally, you obtain:

 x=7.2

 The answer is: The value of "x" is 7.2
5 0
3 years ago
Which set of statements explains how to plot a point at the location (-2.5,3.75)?
Mekhanik [1.2K]

Answer:b

Step-by-step explanation:

3 0
3 years ago
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