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Elis [28]
3 years ago
9

A 10-item statistics quiz was given to 30 students. The table below gives the scores received along with the corresponding frequ

encies.
A 2-column table with 6 rows. Column 1 is labeled score with entries 5, 6, 7, 8, 9, 10. Column 2 is labeled Frequency with entries 1, 2, 5, 5, 7, 10.

What was the mean score on the quiz?

7.5
8.5
9
10
Mathematics
1 answer:
hichkok12 [17]3 years ago
3 0

Answer:

Should be (B).

8.5

ED2021

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Find the slope of the line that passes through the two points.<br> (12,-5) and (10,-4)
hichkok12 [17]

Given parameters:

First point  = (12, -5)

Second point  = (10, -4)

Unknown:

Slope of the line = ?

Slope is simply the vertical rise divided by the horizontal distance.

             Slope  = \frac{Rise }{horizontal distance}

Simply to find slope;

           Slope  = \frac{y_{2} - y_{1}  }{x_{2} - x_{1} }

First point  = (12, -5), x₁  = 12 and y₁  = -5

Second point  = (10, -4), x₂  = 10 and y₂  = -4

Input the parameters:

       Slope  =  \frac{-4 -(-5)}{10 - 12}

                  = \frac{-4 + 5}{-2}

                  = - \frac{1}{2}

The slope of the line is -\frac{1}{2}

7 0
4 years ago
4/7 × 3/8= show how you got answer
seraphim [82]

Answer:

4/7 × 3/8=0.214285714

Step-by-step explanation:

4/7 × 3/8=0.214285714

8 0
3 years ago
Read 2 more answers
A transformation that maps the vertex A( 3 , 4 ) to A’ ( -4 , 3 ) is
Katen [24]

Answer:

"A translation of 7 units to the left followed by a translation of 1 unit down".

Step-by-step explanation:

There are multiple transformations that map one point into another, here is one example that works particularly for translations, which are the simplest (and usually the most used) transformations.

Suppose that we have the point (a, b) which is transformed into (a', b')

Then we have a horizontal translation of (a' - a) units followed by a vertical translation of (b' - b) units.

(the order of the translations does not matter, is the same having first the vertical translation and then the horizontal one).

Here we have the point A (3, 4) transformed into (-4, 3)

Then we have a horizontal translation of ((-4) - 3) = -7 units followed by a vertical translation of (3 - 4) = -1 units.

Where a horizontal translation of -7 units is a translation of 7 units to the left, and a vertical translation of -1 unit is a translation of 1 unit down.

Then we can write this transformation as:

"A translation of 7 units to the left followed by a translation of 1 unit down".

5 0
3 years ago
Which point does the line with equation y+4=3(x-7) pass through?
gregori [183]
<span>y+4=3(x-7)
y + 4 = 3x - 21
y = 3x - 21 -4
y = 3x - 25

when x = 7
y = 3(7) - 25
y = -4
Therefore (7, -4) pass through this equation </span>
5 0
3 years ago
Inez Walks 1.85 mi in 45 minutes , how many miles can she walk in 1 hour?
insens350 [35]

Answer:

She can walk 2.46 repeating miles in 1 hour

Step-by-step explanation:

We can write a proportion to solve this problem.  Write the number of miles on top and the time  in minutes on the bottom.  We know 1 hour is 60 minutes.

1.85 miles                   x miles

-------------------  = ----------------------

45 miles                  60 minutes


Using cross products

1.85 * 60 = 45x

Divide each side by 45

1.85*60/45 = 45x/45

2.466666666 =x

She can walk 2.46 repeating miles in 1 hour

4 0
3 years ago
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