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kvv77 [185]
4 years ago
6

Can someone give me the answer for this and maybe explain it?​

Mathematics
1 answer:
KatRina [158]4 years ago
8 0

Answer:

5x=85

9x=153

Step-by-step explanation:

540-139-71-92-9x-5x=0

238-14x=0

238=14x

17=x

5x=85

9x=153

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Why do we say that light travels in straight lines? Is it strictly accurate to say that a laser beam provides a per- fectly stra
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Step-by-step explanation:

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5 0
4 years ago
4x27-3+5x2=......................
kolbaska11 [484]

Answer:

115

Step-by-step explanation:

8 0
3 years ago
Ella completed 3/8 of a puzzle during recess on Tuesday. Joy completed two six of the same puzzle during recess on Wednesday. ho
gavmur [86]
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6 0
3 years ago
The table displays the frequency of scores for a calculus class on an exam. The mean of the exam scores is 3.5. Score 1 2 3 4 5
vladimir1956 [14]

Answer:

f=11

Mode=4

Median=4

Explanation:

We are given that

a.Mean of the exam score,\bar x=3.5

Score(x)   frequency   C.F

1                  1                 1

2                  3                4

3                  f                 15(4+f=4+11)

4                  13               28

5                   4               32

\sum f_i=1+3+f+13+4=21+f

\sum f_ix_i=1(1)+2(3)+3(f)+4(13)+5(4)=1+6+3f+52+20=79+3f

(\bar x)=\frac{\sum f_ix_i}{\sum f_i}

Using the formula

3.5=\frac{79+3f}{21+f}

73.5+3.5f=79+3f

3.5f-3f=79-73.5

0.5f=5.5

f=\frac{5.5}{0.5}=11

b.Mode:The number which is repeat most times .

4 repeat most times

Hence, mode of all exam scores=4

N=32

N is even

Median=\frac{(\frac{n}{2})^{th}+(\frac{n}{2}+1)^{th}}{2}

Median=\frac{16th+17th}{2}=\frac{4+4}{2}=\frac{8}{2}=4

7 0
4 years ago
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