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solmaris [256]
3 years ago
6

Laura has a toy robot collection 4/7 of her robots makes noise how many of lauras robots make noise?

Mathematics
1 answer:
sleet_krkn [62]3 years ago
3 0

Answer:

16 robots make noise

Step-by-step explanation:

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Select the statement that describes this expression: 10 + fraction 1 over 4x (5 + 3) − 3.
Valentin [98]

Answer:

10 more than fraction 1 over 4 of the sum of 5 and 3, then subtract 3

Step-by-step explanation:

Can't be the other ones

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Write the equation of a line that is perpendicular to the given line and that passes through the given point.
Firlakuza [10]

Answer:

y - 3 = (5/3)(x - 6)

Step-by-step explanation:

The usual first step is to determine the slope of the given line.

In this case the slope is -3/5.

A line perpendicular to this given line would have a slope of 5/3, which is the negative reciprocal of -3/5.

This new line goes thru (6, 3) and has a slope of 5/3.  Thus, the equation of the line in point-slope form is

y - 3 = (5/3)(x - 6)

Double check that you have copied the problem down correctly.  The slope of the line represented by -3x - 5y = 17 is neither 2 nor -2; it is -3/5, and so the slope of a line perpendicular to -3x - 5y = 17 is +5/3.

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3 years ago
What is 10 divided by 2 plus 8?
Burka [1]

Answer:

10 divided by 3 is 5 then you add 8 which will give you 13

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Which statement is the best definition of an angle?
lina2011 [118]

Answer:

I think the answer for this question is C

8 0
3 years ago
The following data shows marks obtained by students in a mathematics test; 6,9,5,0,5,3,7,5,2,7,10,2,9,8,0,6,2,6,6,3,6,9,7,7,4,1,
borishaifa [10]

Data

6,9,5,0,5,3,7,5,2,7,10,2,9,8,0,6,2,6,6,3,6,9,7,7,4,1,6,8

Answer:

(a) shown in the attachment

(b) 0.54

(c) 5.32

<h2>Step-by-step explanation:</h2>

(a) The frequency distribution table has been added to this response.

The table contains four columns:

<em>First column (x)</em>: The discrete values of the marks

<em>Second column (f)</em>: The corresponding frequency of the marks

<em>Third column (d)</em> : The difference between each mark(x) and the assumed mean(A). i.e d = x - A (Where A = 6 from the question)

<em>Fourth column (fd)</em>: The product of the first column and the third column. i.e f * d

(b) From the table, it can be deduced that the modal score is 6

This is because the score 6 has the highest number of frequency which is <em>6</em>

<em></em>

(c) If a student is selected at random, the probability P(>5), that the student scored more than 5 is given as follows;

P( >5 ) = [The sum of frequencies of marks greater than 5] / [Total frequency]

P( >5 ) = [6 + 4 + 2 + 3 + 1] / [28]

P( >5 ) = 15 / 28 = 0.54

Therefore, the probability that the student scored more than 5 is 0.54

(d) To get the arithmetic mean, M, from the assumed mean A = 6, we use the following relation;

M = A + [∑fd / N]           -----------(*)

Where

N = total frequency = 28

A = 6

∑fd = sum of the items on the fourth column = -19

Substitute these values into equation (*)

M = 6 + [-19 / 28]

M = 149 / 28

M = 5.32

Therefore, the arithmetic mean is 5.32

8 0
3 years ago
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