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In-s [12.5K]
3 years ago
5

The product of 7 and a nimber increased by 3 is equal to twice the number subtracted from 39

Mathematics
1 answer:
miss Akunina [59]3 years ago
7 0
Let the number is = x

So number increased by 3 is = x+3.

So product of 7 and (x+3) is = 7*(x+3).

Twice of number is = 2x

So we can write 

7(x+3) = 39 - 2x

7x + 21 = 39 - 2x

Now we can arrange the term as

7x + 2x = 39 - 21

9x = 18

x = 2.

SO the number is 2.
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lara31 [8.8K]

Answer:

C) 32

Explanation:

it's adding by 4, 6, 8, and then 10; 22 + 10 = 32, so C will be the answer.

Hope this helps!

5 0
3 years ago
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Chapter 6, Section 1-D, Exercise 009 Is a Normal Distribution Appropriate? In each case below, is the sample size large enough s
Xelga [282]

Answer:

Step-by-step explanation:

Complete Question:

Chapter 6, Section 1-D, Exercise 009 Is a Normal Distribution Appropriate? In each case below, is the sample size large enough so that the sample proportions follow a normal distribution?

a) n=600 p=0.2

b) n=20, p=0.4

if np=10 and npq=10 then  the data follows normal distribution

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4 0
3 years ago
Can you find the rate of change for the following function: -6x + 3y =9?​
IgorC [24]

Answer:

The general rate of change can be found by using the difference quotient formula. To find the average rate of change over an interval, enter a function with an interval:  

f ( x ) =  x ^2 ,  [ 2 , 3 ]

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Step-by-step explanation:

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3 years ago
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I need help!! Don't just answer for the points!!
Kazeer [188]

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Step-by-step explanation:

The equation would be E =20H. E means her total earnings. 20 is how much money she earns per hour. H is how many hours she tutors. If you put it all together, you get E = 20H.

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3 years ago
5. Two-thirds a number plus 4 i 7.​
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Answer:

x = 9/2.

Step-by-step explanation:

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Multiply both sides by 3/2:

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x = 9/2.

7 0
3 years ago
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