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anzhelika [568]
3 years ago
11

Reyna wants to mail a birthday package to her cousin. The post office told her it would take $5.70 in postage to send the packag

e. Reyna has 3 75-cent stamps and 20 45-cent stamps. Which of the following systems of inequalities correctly represents the constraints on the variables in this problem? Let x represent the 75-cent stamps and y represent the 45-cent stamps.
Mathematics
2 answers:
ololo11 [35]3 years ago
8 0
X = # 0.75 stamps y = # 0.45 stamps total postage = $5.70 
Alexeev081 [22]3 years ago
8 0

Answer:

The inequality representing the situation is 0.75x+0.45y\geq 5.70

Step-by-step explanation:

Let x represent the 75-cent stamps.

Let y represent the 45-cent stamps.

The inequality representing the number of stamps Reyna can use to mail the package is 0.75x+0.45y\geq 5.70

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ms. wilson draws a model of the factorization of a polynomial with integer factors. her model is partially complete. which equat
Oliga [24]
I'll just factor the above equation.

x² + 18x + 80

x² ⇒ x * x
80
can be:
1 x 80
2 x 40
4 x 20
5 x 16
8 x 10  Correct pair

(x+8)(x+10)
x(x+10) +8(x+10) ⇒ x² + 10x + 8x + 80 = x² + 18x + 80

x+8 = 0
x = -8

x+10 = 0
x = -10

x = -8

(-8)² + 18(-8) + 80 = 0
64 - 144 + 80 = 0
144 - 144 = 0
0 = 0

(-10)² + 18(-10) + 80 = 0
100 - 180 + 80 = 0
180 - 180 = 0
0 = 0

I think the algebra tiles will not be a good tool to use to factor the quadratic equation because the equation is not a perfect square quadratic equation.
4 0
2 years ago
Read 2 more answers
The picture Will pop up when you click on question
fiasKO [112]

Answer:

see below

Step-by-step explanation:

1. 10/16=5/6

2.14/63=2/9

3.6/14= 3/7

4.6/24= 1/3

5.7/70=1/10

6.5/10=1/2

7. 9/27= 1/3

8.6/72=1/12

9.6/27=1/3

10. 14/35= 2/5

11.12/24= 1/2

12.5/40=1/8

13.36/40=9/10

14.28/35=4/5

8 0
3 years ago
What is greater than one in 5 1/2
Ira Lisetskai [31]
I think 6 1/2,but I could be wrong so take that with a grain of salt
5 0
3 years ago
Write an equation in standard form for:
Tasya [4]
Hello!
When finding the perimeter of a rectangle, you have to consider the properties of a rectangle. A rectangle has two pairs of equal sides where one is the width, while the other one is the length. 
Now looking back at your question, it says "... a rectangle that is x units wide" ⇒ you let the width = x ; this is the same with "y units long" ⇒ length = y. Perimeter can just be : P = 24.  
Therefore,
The equation would be:
x + x + y + y = P. 
2x + 2y = P.
(Sub in P = 24)
∴ 2x + 2y = 24. (This should be your answer.)
:) Good luck (Message me if you have any problem)








5 0
3 years ago
Please solve with work shown<br><br> 3x-(x-5)=153
pishuonlain [190]
Use cymath it gives you the math answers but the answer is x=74
6 0
3 years ago
Read 2 more answers
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