PLZZZ HELP THIS IS A BIG PART OF MY GRADE!!!!!! PLZ DON'T JUST TAKE POINTS PLZZZZ. I ONLY NEED B!!

Mathematics

1 answer:

Ulleksa [173]2 years ago

4 0

Answer: I need more evindence to answered it but I say its the third one

Step-by-step explanation:

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David bought a used car for $3,000 and later sold it for $1,000. What was the approximate percent decrease in the price of the c

Cloud [144]

The approximate decrease is around 66 percent.

8 0

3 years ago

Read 2 more answers

Devon and his friends bought strawberry wafers for $3 per packet and chocolate wafers for $1 per packet at a carnival. They spen

boyakko [2]

PART A
s = the number of packets of strawberry wafers ;
c = the number of packets of chocolate wafers ;
3 × s + 1 × c = 30 ;
s + c = 22 ;

PART B

The method of solving "by substitution" works by solving one of the equations (you choose which one) for one of the variables (you choose which one), and then plugging this back into the other equation, "substituting" for the chosen variable and solving for the other. Then you back-solve for the first variable.

c = 30 - 3s;
s + ( 30 - 3s ) = 22;
30 - 2s = 22;
30 - 22 = 2s;
8 = 2s;
s = 4 ;
c = 30 - 12 ;
c = 18 ;

4 0

3 years ago

Please help A) x= -4 and 4 B) x=4 and 6 C) x=2 and 8 D) no solution

Neporo4naja [7]

Answer:

No solutions

Step-by-step explanation:

|-2x-10| + 4 = 2

Subtract 4 from each side

|-2x-10| + 4-4 = 2-4

|-2x-10| = -2

The absolute value is negative so there are no solutions.