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gayaneshka [121]
3 years ago
10

Solve this linear equation a+b=8 a-b=4

Mathematics
2 answers:
Studentka2010 [4]3 years ago
4 0

Answer:

a = 6 , b = 2

Step-by-step explanation:

a+b - (a-b) = 2b

8 - 4 = 4

2b = 4

b = 4 ÷ 2

b = 2

When b = 2,

a+2 = 8

a = 8 - 2

a = 6

mihalych1998 [28]3 years ago
3 0

Answer:

a = 12   b = -4

Step-by-step explanation:

To solve this equation it would be easiest to use the elimination method

a + b = 8

a - b = 4

a = 12

Now all we have to do is substitute 12 for a in any equation. For this I will use the first one.

12 + b = 8

Lastly subtract 12 from both sides

b = -4

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Evaluate x2 + 14 for x = –5.
OlgaM077 [116]

Answer:

x2+14 x=-5

-5(2)+14

-10+14=4

6 0
3 years ago
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What is the absolute value of 26
Tasya [4]

Answer:

26

Step-by-step explanation:

The absolute value of a number is how far away the number is from zero. The absolute value is ALWAYS positive.

6 0
4 years ago
What is the expression for the first step in dividing 5x+3 by x
AVprozaik [17]
The first step in dividing the expression 5x + 3 by x is dividing the first term which is given to be 5x by x. This is shown below,
 
                                    5x / x = 5

Thus, the expression for the first step in this division is 5. 
4 0
3 years ago
Tiffany sells boiled taters for $10 a plate. She sells 50 plates a week for a total of ($10)(50) = $500 each week, which is not
levacccp [35]

Tiffany should sell her boiled tater plates in order to maximize her revenue at $15 per plate.

What is revenue?

  • Revenue in accounting refers to the entire amount of money made through the sale of products and services that are essential to the company's core operations.
  • Sales or turnover are other terms used to describe commercial revenue. Some businesses make money from royalties, interest, or other fees.

Given that,

Number of plates: 50

cost per plate=10

Total=50x10=500

Revenue generated with  two fewer plates of boiled taters:

11X48=528

12X46=552

13X44=572

14X42=588

15X40=600

Tiffany should sell her boiled tater plates in order to maximize her revenue at $15 per plate.

To learn more about revenue visit:

brainly.com/question/16232387

#SPJ1

5 0
1 year ago
Kristin wants to buy a pair of jeans that cost $35 and are on sale
Genrish500 [490]

Answer:

$51.10

Step-by-step explanation:

First, find 20% of $35, then add the sale price of the jeans and the two t-shirts. Take the total and find the sales tax and add that onto the cost.

100 - 20 = 80 If you multiply the jeans by 80% it gives you the price for the jeans saving you from having to subtract the discount from the original price.

35 * 0.80 =  $28.00 jeans                     28.00                             47.98

                                                                  9.99                             <u>+ 3.12</u>

                                                           <u>  +   9.99</u>                            $51.10

                                                                47.98

                                                           <u>X   0.065</u>

                                                                 $3.12

3 0
3 years ago
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