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4 years ago

How to solve this equation?

Mathematics

1 answer:

Jet001 [13]4 years ago

4 0

Answer:

Step-by-step explanation:

2 ÷ 2/7

We use copy dot flip

2 * 7/2

2/1 * 7/2

Rewrite to make the math easier

2/2 * 7/1

7/1

1 * 7

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Kevin Horn is the national sales manager for National Textbooks, Inc. He has a sales staff of 40 who visit college professors al

just olya [345]

Answer:

(a) median = 57

(b) Q1=50 Q3=63.5

(c)D1 = 41 D9=67

(d)P33= 51

Step-by-step explanation:

(a) The numbers are arranged in ascending order, and there are even number of calls. So the median will be the average of the middle terms.

middle terms are 55 and 59

Median = $\frac{55+59}{2}$

median= 57

(b) First quarter Q1 = $\frac{1}{4} number of calls$ th

= $\frac{1}{4} *30$ th

= 7.5th

so the first quarter lies in the 7.5th= (7+0.5)th term

So we multiply 0.5 by the difference of the 7th and 8th term

=0.5 *0= 0

Q1 = 50+0=50

Q3= $\frac{3}{4} number of calls$ th

= $\frac{3}{4} *30$ th

=22.5th = (22+0.5)th term

So we multiply 0.5 by the difference of the 22th and 23rd term

= 0.5*1=0.5

Q3= 63+0.5=63.5

(c) First decile (D1) = $\frac{1}{10} number of calls$ th

= $\frac{1}{10} *30$ th

= 3rd term

D1= 41

D9= $\frac{9}{10} number of calls$ th

= $\frac{9}{10} *30$ th

=27th term

D9 = 67

(d) 33rd percentile = $\frac{33}{100} number of calls$ th

= $\frac{33}{100} *30$ th

= 9.9th term = (9 +0.9)th

Multiply 0.9 by the difference between the 9th and tenth term.

= 0.9*0 =0

P33 = 51

8 0

3 years ago

Solve the equation and check the solution4.4x-4=3.4x

PolarNik [594]

$4.4x-4=3.4x$

Substract '-3.4x' at LHS nad the RHS of the above expression.

$\begin{gathered} 4.4x-4-3.4x=3.4x-3.4x \\ 4.4x-3.4x-4=0 \\ x-4=0 \end{gathered}$

Add '4' on both LHS and RHs of the above expression.

$undefined$

4 0

2 years ago

When can we not use the distributive property?

Mars2501 [29]

Answer:

Step-by-step explanation: We usually use the distributive property because the two terms inside the parentheses can't be added because they're not like terms;

6 0

3 years ago

Which property is illustrated by the statement (4+6.1)+7=4+(6.1+7)

Slav-nsk [51]

Answer: It is an associative property of addition.

Step-by-step explanation:

Since we have given that

(4+6.1)+7=4+(6.1+7)

As we know that "Associative property":

$(a+b)+c=a+(b+c)$

Associativity in addition means that adding three numbers and then change the order of numbers and then add it again, we will get the same answer.

So,

$(4+6.1)+7=10.1+7=17.1\\\\Similarly,\\\\4+(6.1+7)=4+13.1=17.1$

Hence, it is an associative property of addition.

6 0

3 years ago

Read 2 more answers

What is 160 bananas; 20% decrease??

inessss [21]

Answer:

128

Step-by-step explanation:

160 x .20 = 32

160 - 32 = 128

6 0

4 years ago