imagine, in a given community, 20% of people above 60 years old have heart disease. if we randomly choose 10 people above 60 years old, exactly how many of them will have heart disease?

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

cause 20 percent of 10 is 2 lol

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Please help me with this one
10x+5y=72
15x+4y=80

Answers

I hope this helps you

Problem: Solve 10x+5y=72;15x+4y=80 Steps: I will try to solve your system of equations. 10x+5y=72;15x+4y=80 Step: Solve10x+5y=72for x: 10x+5y+−5y=72+−5y(Add -5y to both sides) 10x=−5y+72 10x 10 = −5y+72 10 (Divide both sides by 10) x= −1/2 y+36 5 Step: Substitute −1 2 y+ 36 5 forxin15x+4y=80: 15x+4y=80 15( −1 2 y+ 36 5 )+4y=80 −7 2 y+108=80(Simplify both sides of the equation) −7 2 y+108+−108=80+−108(Add -108 to both sides) −7 2 y=−28 −7 2 y −7 2 = −28 −7 2 (Divide both sides by (-7)/2) y=8 Step: Substitute8foryinx= −1 2 y+ 36 5 : x= −1 2 y+ 36 5 x= −1 2 (8)+ 36 5 x= 16 5 (Simplify both sides of the equation) Answer: x=16/5 and y=8

Someone, please help me with this

Answers

Answer:

C = (0, 6)

E = (7, 0)

F = (0, -7)

Step-by-step explanation:

Answer: F is (0,-7)

C is (0,6)

E is (7,0)

Step-by-step explanation:

3x-5y=9
-4x+2y=2
Solve using algebraic methods.