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sladkih [1.3K]
3 years ago
15

I need to have twenty characters here

Mathematics
1 answer:
mestny [16]3 years ago
6 0
Try explaining how you worked the problem and how you did it
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3x+2y=10<br> 12x+5y=25<br><br> Solve by substitution or elimination
zaharov [31]
3x + 2y = 10 ....multiply by -4
12x + 5y = 25
-------------------
-12x - 8y = -40 (result of multiplying by -4)
12x + 5y = 25
------------------add
-3y = - 15
y = -15/-3
y = 5

3x + 2y = 10
3x + 2(5) = 10
3x + 10 = 10
3x = 10 - 10
3x = 0
x = 0

solution is (0,5)
5 0
3 years ago
create a linear function f(x), whose graph has the given slope that meets the given condition. slope of -7, f(-5)=2
sergejj [24]
Our goal is to fit the given information into the slope-intercept form.
y=mx+b

We can place the slope in 'm.'
y= -7x+b

Then, input the values for the x and y.
2= -7(-5)+b
2=35+b
b=2-35
b= -33

'b' is the intercept, so now that we know that, we can plug in all the values and find our final equation.

y= -7x -33

8 0
3 years ago
Determine the quotient of 3 over 7 divided by 2 over 3 . 6 over 21 1 over 2 9 over 14 1 and 5 over 9
Naddika [18.5K]

um I dunno because I need points to ask a question sorry

8 1
3 years ago
Two apples and three peaches cost $1.65. three apples and two peaches cost $1.60. what is the cost of one peach
marta [7]
Apples = $.30
Peaches = $.60

You can get this by setting up a system of equations that looks like this. 

2x + 3y = 1.65
3x + 2y = 1.60

Where x is the amount of apples and y is the number of peaches. Then you can solve using any of the methods (I would suggest elimination for ease). 
7 0
3 years ago
45 degreese is used in a pie chart to reperesent 6 people. How many people were there altogehter?
KatRina [158]
We can solve this problem by the rule of three.
A complete pie chart has 360º. 

45º----------------------6 people
360º--------------------    x

x=(360º*6 people) / 45º=48 people.

Answer; 48 people. 
6 0
3 years ago
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