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attashe74 [19]
3 years ago
8

Solve the system of equations using subtraction. 3x – 3y = -6 3x + y=10

Mathematics
1 answer:
LUCKY_DIMON [66]3 years ago
8 0

Answer:

(2,4)

Step-by-step explanation:

x=2

y=4

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Pls help I don’t understand
DaniilM [7]

Its simple.

Cost of t-Shirt each=$14

Cost of shorts each=$18

No. of clothes=x t-shirts and y shorts

so just multiply cost of each t-shirt no.of t-shirts and do the same thing with the Shorts

you get the answer as 14x +18y

There! you've expressed it in the form of ax+by and 14 and 18 are also positive or negative constant

Youve found the answer satisfing all the requirements

hope it helped you aand if it did please mark as brainliest answer

Thanks and keep studying

5 0
3 years ago
HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
VashaNatasha [74]
Short answer
y >-x + 4
y <= 2(x - 1)^2 - 18

Comment

Let's establish what we are talking about. The question says purple and to me purple means the shaded area above the blue and to the upper right of the parabola. 

Not so. It is the wine colored area right above the parabola according to the direction of he inequalities.

Second thing: the question is trying to see if you can read all he information you need from a graph. 

Step One
Find the equation of the line.
We can read 2 points right away the x and y intercepts.
(4,0) is the x intercept
(0,4) is the y intercept

The general equation for the slope intercept equation is
y = mx + b So when x = 0 then b = y
4 = m*0 + b
b = 4

This far we have
y = mx + 4
when x = 4, y = 0
0 = m*4 + 4 Subtract 4 from both sides.
-4 = m*4      Divide by 4
-4/4 = m
m = - 1

Complete equation is y = -1x + 4
The inequality is y > -x + 4            Top answer block.

Step Two

Find the equation for the parabola

You could just read the minimum point which is (1,-18) There is a catch. (Isn't there always?) This may have a constant in front of the (x - a)^2 term. We'll check that out in the next step.

y = (x - 1)^2 - 18 is the basic vertex solution

Step Three
Find the value of a in
y = a(x -  1)^2 - 18
You have to do this because the answer has a space before the brackets. We need another point. The y intercept might work. 

y = a(0 -1)^2 - 18
Use the point (0,-16)
-16 =  a(1) - 18 
-16 = a - 18 Add 18 to both sides.
2 = a

So the equation of the quadratic is
y <= 2(x - 1)^2 - 18 <<<<<< answer second section down on your question sheet.


5 0
3 years ago
How do I simplify this??? (-3e⁻⁵ˣ)² I'm pretty sure the answer I put is right, but the computer won't accept it!
fenix001 [56]

Answer:

Your answers right?

Step-by-step explanation:

I'm not sure why it's saying that it's wrong because it looks like its right..

4 0
3 years ago
Read 2 more answers
What is 9393÷76= I need help with this sum
Nikolay [14]
The exact answer is 123.592105263
Hope This Helps You!
Good Luck Studying :)
7 0
4 years ago
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A zookeeper measured the lengths of green iguanas to chart their growth. She plotted her results on the line plot
Snezhnost [94]
I'm glad she had the time and effort to do so. however, is there a question?
6 0
3 years ago
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