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Ipatiy [6.2K]
3 years ago
14

What is the value of the equation below when a=3 and b=7 a2-2b

Mathematics
1 answer:
Flauer [41]3 years ago
7 0
This equation uses substitution 
a=3 b=7
a2-2b
(3)2-2(7)
5-14
-9
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Ken paid for $12 for two magazines. The cost of each magazine was a multiple of 3. What is Mare the possible prices of the magaz
Artist 52 [7]

Answer:

So the possibilities are

$12 and $ 0    ,    $9 and $ 3      , $6 and $6

Step-by-step explanation:

Given:

Total Magazines = 2

Price = $ 12

To Find:

Possible Prices of magazines = ?

Solution:

As it is given that Prices of magazines is multiples of 3

So

Multiples of 3 up till 12 are  

0, 3 , 6 , 9 , 12

Now

Total Price of magazine is $12

Now The possible prices of the magazines are

First Possibility:

If price of first magazine is $12 then second would be $0 (free)

First possible price $12 and $0

Second Possibility:

If price of first magazine is $9 then second would be $3

Second possible price $3 and $9

Third Possibility:

If price of first magazine is $6 then second would be $6

Third possible price $6 and $6

So the possibilities are

$12 and $ 0    ,    $9 and $ 3      , $6 and $6

8 0
2 years ago
Need hep on iready please!!!!!!!
Nesterboy [21]

Answer:

3

Step-by-step explanation:

I think its 3 because if its 6 then you divide. it by 2

5 0
2 years ago
Read 2 more answers
The price of an item yesterday was $115. Today, the price rose to $161. Find the percentage increase
mamaluj [8]

Answer:

14%

Step-by-step explanation:

161/115 = 1.4 which you times by 100

4 0
3 years ago
Which of the following is a solution of x2 − 10x = −36? (6 points)
Softa [21]

Answer:

D

Step-by-step explanation:

Given

x² - 10x = - 36

Solve using the method of completing the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(- 5)x + 25 = - 36 + 25

(x - 5)² = - 11 ( take the square root of both sides )

x - 5 = ± \sqrt{-11} ( add 5 to both sides )

x = 5 ± i\sqrt{11}

Thus

x = 5 - i\sqrt11} or x = 5 + i\sqrt{11}

6 0
3 years ago
PLEASE HELP!!!
skelet666 [1.2K]

Answer:

(-2, 2)          

Step-by-step explanation:

x= -2  y= 2      

6 0
3 years ago
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