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Artyom0805 [142]
3 years ago
5

One day a gir bought 20 first class stamps and 10 postcard stamps for $11.10 another day she spent $47.30 on 80 first class stam

ps and 50 postcard stamps find the cost of each type of stamp
Mathematics
1 answer:
-BARSIC- [3]3 years ago
5 0

eleventeen i nneeeeed pointss and 20 chracterssss

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What is the slope of the line?
Ahat [919]

Answer:

Y= -4/-4x -1

Step-by-step explanation:

I think this is correct, I haven't done this in awhile though. I hope this helps

3 0
3 years ago
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Two number have a sum of 71 and a difference of 37
larisa86 [58]
The right answer for the question that is being asked and shown above is that:

Two numbers have a sum of 71 and a difference of 37
x + y = 71
x - y = 37

So in order to get the two numbers, here it is:
x + y = 71
x - y = 37
------------
2x = 108
x = 54
y = 71 - 54
y = 17

<span>So the two numbers are 54 and 17</span>
6 0
3 years ago
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The graph above is a transformation of the function x2 Write an equation for the function graphed above
lutik1710 [3]

Answer: y=0,5x²-x-1,5.

Step-by-step explanation:

(-1;0)\ \ \ \ (3;0)\ \ \ \ (1;-2)   \ \ \ \  y=ax^2+bx+c\ ?\\\left\{\begin{array}{ccc}a*(-1)^2+b*(-1)+c=0\\a*3^2+b*3+c=0\\a*1^2+b*1+c=-2\end{array}\right \ \ \ \  \ \left\{\begin{array}{ccc}a-b+c=0\ \ (1)\\9a+3b+c=0\ (2)\\a+b+c=-2\ (3)\end{array}\right  \\

We summarize (1) and (3):

2a+2c=-2\ |:2\\a+c=-1\ \ \ \ \Rightarrow\\a+b+c=-2\\(a+s)+b=-2\\-1+b=-2\\b=-1.

Substitute b=-1 into (2):

9a+3*(-1)+c=0\\9a-3+c=0\\9a+c=3\ \ (5).\\

From (5) subtract (4):

8a=4\ |:8\\a=0,5.\ \ \ \  \Rightarrow\\

Substitute a=0,5 into (4):

0,5+c=-1\\c=-1,5.

Hense:

y=0,5x²-x-1,5.

5 0
2 years ago
22. On a map, Center St, passes through coordinates (5, -3) and (3,7), Merrie Rd.
Aloiza [94]

Answer: B

Step-by-step explanation: It just is

4 0
3 years ago
−<br> 1<br> 4<br> (<br> −<br> 8<br> x<br> +<br> 12<br> y
lawyer [7]

Answer:

I am assuming the question is

-14(-8×12y)

112-168y

Step-by-step explanation:

you have to expand the brackets first.

then you can't do anything after expanding the brackets because they are not like terms

hope this was helpful

8 0
3 years ago
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