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Natalija [7]
3 years ago
12

You join a bowling team. The first week, you bowl three games to determine your average. Your scores are 138, 128, and 151. What

is your mean score?
Mathematics
2 answers:
san4es73 [151]3 years ago
6 0
Well first you add up your scores whichn adds your to a total of 417 than your divide the total of numbers in add in this case that are three. So, to find the average you divide 417 by 3 which equals 139.
The Mean/Average Score is 139.
Anuta_ua [19.1K]3 years ago
3 0
The mean score is 139
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Question in the picture
mart [117]

I will find x, so 4x-4=180, so 4x=184, so x=46

Sorry if i answered wrong I don't understand what it is asking for.

8 0
3 years ago
Given the equation y − 3 = one half(x + 6) in point-slope form, identify the equation of the same line in standard form.
Schach [20]

Answer:

A. x-2y=-12

Step-by-step explanation:

We have been given an equation of a line in point-slope form. We are asked to write our given equation in standard form.

y-3=\frac{1}{2}(x+6)

Since we know that standard form of equation is: ax+by=c, where, a, b and c are constants.

Let us multiply both sides of our given equation by 2.

(y-3)*2=2*\frac{1}{2}(x+6)

2y-6=x+6

Let us add 6 to both sides of our equation.

2y-6+6=x+6+6

2y=x+12

Let us subtract x from both sides of our equation.

2y-x=x-x+12

2y-x=12

Multiply both sides of our equation by -1.

-2y+x=-12

Rearranging our equation we will get,

x-2y=-12

Therefore, the standard form of our given equation is x-2y=-12 and option A is the correct choice.

4 0
2 years ago
A triangle has side lengths of 10, 11, and 15 . what type of triangle is it?
Trava [24]
Answer: scalene and obtuse

Justification:

You can find the angles using the law of cosine:

c^2 = a^2 + b^2 - 2abcos(γ)

=> cos(γ) = [a^2 + b^2 - c^2] / (2ab)

1) cos(γ) = [10^2 + 11^2 - 15^2] / (2*10*11) = - 0.0181818

=> γ = arccos(-0.0181818} ≈ 91°

2) cos(α) = [b^2 + c^2 - a^2 ] / 2bc = [11^2 + 15^2 - 10^2] / (2*11*15] = 0.7454545

=> α = arccos(0.7454545) ≈ 41.8°

3) cos(β) = [a^2 + c^2 - b^2] / (2ac) = [10^2 + 15^2 - 11^2] /(2*10*15) = 0.68

=> β = arccos(0.68) ≈ 47.2°

4) Verification: 91° + 41.8° + 47.2° = 180°

5) The triangles with the three different sides are called scalenes (which you can tell with only the measures of the sides).

6) The triangles with one angle greater than 90° are called obtuse.

So, the triangle is scalene and obtuse.
7 0
2 years ago
You buy 2.3 pounds of apples for<br>$1.43 per pound. How much do<br>you spend?​
saveliy_v [14]

Answer:

$3.30 ($3.289)

Step-by-step explanation:

2.3 times 1.43 = 3.289 rounded to 3.30

6 0
3 years ago
Vertex and axis of symmetry f(x)=2x^2-16x-17<br> PLEASE HELP
Law Incorporation [45]
The vertex is at (4, -49) and the axis of symmetry is at x= 4.

To find the vertex of this equation, use this method: ( \frac{-b}{2a})

a=2
b=-16

This will help get your x value and the axis of symmetry. To find the y value of the vertex, insert the x value, 4 to get your y value, -49.
8 0
3 years ago
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