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ryzh [129]
3 years ago
7

Please help! Brainliest, stars, and hearts! Explain please! I GIVE BRAINLIEST if CORRECT!

Mathematics
1 answer:
BlackZzzverrR [31]3 years ago
5 0

Answer:

x=31

Step-by-step explanation:

3x+25+2x=180°

=5x=155°

x=155/5

x=31

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In a class of 50 students, 40 students offered Physics and 30 offered Biology. How many offered both Physics and Biology?
N76 [4]

Answer:

20 students offered both physics and biology.

Step-by-step explanation:

n(Total) = 50

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Let n(Physics and Biology) = x

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