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DIA [1.3K]
3 years ago
6

Help please? Questions 1-15 i really need it♡

Mathematics
1 answer:
Novosadov [1.4K]3 years ago
7 0

Answer:

here:

1. -9

2. -28

3. 54

4. -100

5. -60

6. -0

7.  49

8. -135

9. -96

10. 300

11. -153

12. -192

THIS TOOK LONG BECAUSE I DID A LONG ONE BUT THEN I MADE IT SHORTER. :D

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Suppose you and your friends form a band and you want to record a demo. Studio A rents for $75 plus $75 an hour and Studio B
Ganezh [65]

Answer:

Step-by-step explanation:

Studio A rents for $75 plus $75 an hour .

Studio B rents for $150 and $50 an hour.

Let t = the number of hours and c = cost.

Part A

Write a system of equations to represent the cost at each studio.

Studio A: c = 75 +75·t

Studio B: c = 150 +50·t

Part B

Solve the system of equations from Part A. Explain your method.

We solve the system of equation using substitution method, where we substitute c in the first equation with 150 +50t.

150 +50·t = 75 +75·t, subtract 75 and 50t from both sides

   150 -75 = 75t -50t, combine likes terms

           75 = 25t, divide both sides by 25

             3 = t

Now we know that t = 3 so we find c by substituting t with 3 in the second equation.

c = 150 +50·t

c = 150 +50·3

c = 300

The solution of the system of equations is c = 300 and t = 3

Part C

Explain what the solution to the system means in terms of where your band will rent a studio.

The solution of the system of equation tells us that if we rent either studio A or B for 3 hours will pay the same price $300.

The price will be different if we rent studio A then studio B if we rent it for a different amount of time than 3 hours.

7 0
2 years ago
For friends went to a restaurant in bought Two large pizzas and if each pay 5.25 how much was each pizza
guajiro [1.7K]

Answer:

$10.5

Step-by-step explanation:

4(5.25) = $21 (total amount of money spent)

we want to divide that by 2 because we want to find the cost of one pizza

21/2 = $10.5

8 0
3 years ago
Find a and b. А E b B 409 с D​
babymother [125]

Answer:

a = 70°, b = 140°

Step-by-step explanation:

use alternate interior angles

The interior angles of a straight line are 180°

a = 180°-110° = 70°

b = 180°-40° = 140°

//I'm sorry, but I'm not very fluent in English.

7 0
2 years ago
Is 300 cm or 30 meters larger
notka56 [123]
I think it's 30 meters
I hope it helps
8 0
3 years ago
Identify the type of sequence 1/10, 3/20, 5/30, 7/40...
Dafna11 [192]
Arithmetic sequence: must have a constant common difference.
3/20-1/10=(3-2)/20=1/20
5/30-3/20=(10-9)/60=1/60
Difference is not constant, so no.

Geometric sequence: must have a common ratio
30/20 / (1/10) = 15
5/30 / (3/20) = 100/90 = 10/9 
ratio is not constant, so no.

The answer is (c) neither geometric nor arithmetic

4 0
4 years ago
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