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Kryger [21]
3 years ago
5

Given that a*b = 2a - 3b, then 2*(-3) =​

Mathematics
1 answer:
belka [17]3 years ago
6 0

Answer:

2*(-3)= -6

Step-by-step explanation:

I do not see how "a*b=2a-3b" would change the fact 2 times negative 3 is -6

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The area of a rectangular rug is given by the trinomial r^2-4r-77. What are the possible dimensions of the​ rug? Use factoring.
Softa [21]
When you factor the equation...

r^2-4r-77

r^2+7r-11r-77

r(r+7)-11(r+7)

(r-11)(r+7)  so each parenthetical term is a dimension.

Note that r>11 though for any possible real solution. 
4 0
3 years ago
True or false to begin an indirect proof, you assume the opposite of what you intend to prove is true
damaskus [11]

Answer:

true

Step-by-step explanation:

you must assume its false and if said statement leads to an impossibility then its proved to be true

7 0
3 years ago
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15 POINTS to solve this CONSTRUCTION.
White raven [17]

Answer:

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3 years ago
Part B A sales person earned 1375
Furkat [3]

Question:

A salesperson earns commission on the sales that she makes each month.

The salesperson earns a 5% commission on the first $5,000 she has in sales.

The salesperson earns a 7.5% commission on the amount on her sales that are greater than $5,000.  

Part A:

This month the salesperson had $8,000 in sales. What amount of commission, in dollars, did she earn?

Part B:

The salesperson earned $1,375 in commission, last month. How much money, in dollars, did she have in sales last month?

Answer:

A) The amount of commission  = $575

B) The total sales amount  =  $20000

Step-by-step explanation:

<h3><u>Part A </u></h3>

Given:

Total amount earned =  $8,000 in sales

To Find :

The amount of commission, in dollars

Solution:

The commission she earns = Commission 1+ Commission 2----------(1)

Commission 1 = 5% of 5000

Commission 2  = 7.5 % of (8000- 5000}

Finding commission 1:

= 5% of 5000

= \frac{5}{100} \times 5000

= 0.05 \times 5000

= $250 ------------------------------(2)

Finding commission 2:

=  7.5 % of (3000)

=\frac{7.5}{100}\times 3000

= 0.075 \times 3000

= $225----------------------------------(3)

Substituting (2) and (3) in (1)

The commission she earns = $250 + $225 = $575

<h3><u>Part B</u></h3>

Given:

Total commission earned = $1375

To Find :

The total sales amount = ?

Solution ;

Let the sales amount be x

Then

1375 = 5% of  5000 + 7.5 % of (x -5000)

1375 = 0.05 \times 5000 + 0.075 \times (x -5000)

1375 = 250 + 0.075x - 375

1375 = -125 + 0.075 x

1375 +125 = 0.075 x

1500 = 0.075x

x = \frac{1500}{0.075}

x = 20000

The total sales amount  is $20000

5 0
3 years ago
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Elza [17]

Answer:

1: -12

2: 3 7/9

3: 7

Step-by-step explanation:

4 0
3 years ago
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