Bianca wrote the steps for her solution to the equation 2.3 + 8(1.3x – 4.75) = 629.9. She left out the description for the last
step.
What is the missing step of her solution?
A: Add 10.4 to both sides.
B: Add negative 10.4 to both sides.
C: Multiply both sides of the equation by 10.4.
D: Divide both sides of the equation by 10.4.
What is the missing step of her solution?
A: Add 10.4 to both sides.
B: Add negative 10.4 to both sides.
C: Multiply both sides of the equation by 10.4.
D: Divide both sides of the equation by 10.4.
2 answers:
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Answer:
12
Step-by-step explanation:
a² + b² = c²
a² + 9² = 15²
a² + 81 = 225
a² = 225 - 81
a² = 144
a = 12