The solution for given linear equation systems is (3,-4).
Option: C
<u>Step-by-step explanation:</u>
The given equations are 5x+3y=3 and x+y= -1.
Let us isolate x value from equation 5x+3y=3.
5x = 3-3y.
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Substitute this x value in equation x+y= -1.
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After taking LCM for the denominator,
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3-3y+5y=-5.
2y=-8.
y=-4.
For  substitute the y value.
 substitute the y value.
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.
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x=3.
∴ The solution is (3,-4).
 
        
             
        
        
        
<h2>
40 % of coins are pennies.</h2>
Step-by-step explanation:
Total number of coins = 600
Total number of pennies = 240

40 % of coins are pennies.
 
        
        
        
Answer:
15.4
Step-by-step explanation:
-5×(-4.9) +7×(-1.3)
=24.5+(-9.1)
=24.5-9.1
==15.4
 
        
             
        
        
        
Answer:

Step-by-step explanation:
1) Use square sum: (a + b)² = a² + 2ab + b².

<u>Therefor</u><u>,</u><u> </u><u>the</u><u> </u><u>answer</u><u> </u><u>is</u><u> </u><u>x</u><u>²</u><u> </u><u>+</u><u> </u><u>2xy</u><u> </u><u>+</u><u> </u><u>y</u><u>²</u>.
 
        
             
        
        
        
Answer:
x = 83°
Step-by-step explanation:
41, 56 and the missing angle = 180° ( form a straight angle )
missing angle = 180° - (41 + 56)° = 180° - 97° = 83°
The angle x and the missing angle are vertically opposite and congruent
Hence x = 83°