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kicyunya [14]
3 years ago
14

6x5-3x3x3 divide by 3

Mathematics
2 answers:
Talja [164]3 years ago
7 0

I will interpret and evaluate your expression following order of operations rules strictly.  6*5 (multiplication) and 3*3*3 / 3 (division) must be done first, before subtraction.  Then we have 30 - 9, or 21.  If you truly meant 3*3*3, why not write that as 3^3?

Papessa [141]3 years ago
7 0
i think it is 90 idk i tried
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leonid [27]

Answer:

  • The value of a = 5.8
  • The value of b = 4.4

Step-by-step explanation:

Given

7.2, a, b, 3 are in A.P

2a = 7.2+b

b = 2a - 7.2

as

a, b, 3 are also in A.P

2b\:=\:a\:+\:3

Putting b = 2a - 7.2

2\left(2a-7.2\right)=a+3

4a-14.4=a+3

\mathrm{Add\:}14.4\mathrm{\:to\:both\:sides}

4a-14.4+14.4=a+3+14.4

4a=a+17.4

4a-a=a+17.4-a

3a=17.4

\mathrm{Divide\:both\:sides\:by\:}3

\frac{3a}{3}=\frac{17.4}{3}

a=5.8

Now, plugging a=5.8 in b = 2a - 7.2

b=2\left(5.8\right)-7.2

b=2\cdot \:5.8-7.2

b=11.6-7.2

b=4.4

Therefore,

  • The value of a = 5.8
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3 years ago
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<h3><u>Answer with explanation:</u></h3>

From the box and whisker plot of seventh grade we have:

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From the box and whisker plot of eighth grade we have:

The minimum value =22

First quartile or lower quartile i.e. Q_1 = 26

Median or second quartile i.e. Q_2 = 30

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and maximum value = 38

a)

The overlap of the two sets of data is as follows.

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b)

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i.e. Q_3-Q_1

so, IQR of seventh grade is:

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c)

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d)

As the IQR of both the sets is same i.e. 8.

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8\times n=12\\\\n=\dfrac{12}{8}\\\\n=\dfrac{3}{2}\\\\n=1.5

Hence, the number is : 1.5

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