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tester [92]
2 years ago
8

What is the answer to 2.5d + 7.5 = 20

Mathematics
1 answer:
mina [271]2 years ago
3 0

Answer:

d=5 mark brainliest if satisfied

Step-by-step explanation:

Subtract 7.5 from both sides

2.5d=12.5

d=5

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Read 2 more answers
Solve the quadratic equation by using a numeric approach.
Sonja [21]

The solution to the quadratic equation by using a numeric approach

are x = 6.3 and x = -31.3

Given the quadratic function expressed as;

0.02x²+ 0.5x - 4 = 0

Multiply through by 100 to have;

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Using the general formula to solve:

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x = -50±√2500+3200/4

x = -50±75.49/4

x = -31.3 or 6.3

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