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lara [203]
3 years ago
13

Help please, I'm desperate!

Mathematics
2 answers:
Luden [163]3 years ago
8 0
B. 2.8
Because, 4-1.2=2.8
tiny-mole [99]3 years ago
3 0

Answer:

Step-by-step explanation:

For bubble answers:

1. A

2.  B

3.  B

4. C

5. A

6. B

7. C

8.  B

9. B

One or two may be wrong sorry

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Joey "Goodfella" Branzolli liked to shuffle music as a disk jockey. He had 80 CDs, which were rock and rap CDs. He bought his CD
AveGali [126]

Answer: there has to be 52 rock (4 each) which equals to 208, and 28 rap (3 each) which equals to 84, and 84 + 208 = $292


Step-by-step explanation:


8 0
3 years ago
mary ann is building a fence around the outer edge of a rectangular garden plot that measures 25 feet by 45 feet. She will set p
Shalnov [3]

Answer:

28

Step-by-step explanation:

find perimeter (25 + 25 + 45 + 45 = 140)

divide your perimeter by 5 (140 ÷ 5 = 28)

therefore you need 28 fence posts

4 0
3 years ago
Select the phrase from the drop-down menu to correctly complete to the sentence.
Allisa [31]

Answer: Yeah, C is correct.


Step-by-step explanation:


6 0
3 years ago
Read 2 more answers
Show work on this pls
Inessa [10]

Answer:

largest angle measures 108°

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Sum the 3 angles and equate to 180, that is

8x - 6 + 108 + 14 = 180, simplify left side

8x + 116 = 180 ( subtract 116 from both sides )

8x = 64 ( divide both sides by 8 )

x = 8

Thus

∠ U = 8x - 6 = 8(8) - 6 = 64 - 6 = 58°

Then the largest angle measures 108° ( ∠ B )

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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