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andreev551 [17]
3 years ago
8

What is the simplified form of the expression 7[63÷(5^2-2^2)-1]?

Mathematics
2 answers:
Oksanka [162]3 years ago
5 0
<span>What is the simplified form of the expression 7[63÷(5^2-2^2)-1]?

</span>7[63÷(5^2-2^2)-1]
= 7[63÷(25-4)-1]
= 7[63÷(21)-1]
= 7[3-1]
= 7 (2)
= 14

answer is <span>C. 14

</span><span>Which is a solution of the equation y=4x+3?

answer is 
C. (4,19)

</span>y=4x + 3
19 = 4(4) +3
19 = 16 +3
19 = 19
d1i1m1o1n [39]3 years ago
3 0
The second one is C. you plug in the first number for x and the second number for y. its saying 19 = 4(4) + 3. and 19 = 16 + 3 is 19 = 19 so C is the answer.
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