7+3+8+3=21 fishes in total
8/21 fishes are healthy
8/21 = 0.4 => 40%
Answer:
17-33i
Step-by-step explanation:
Multiply using the foil method than combined the real and imaginary parts of the expression
Answer:
120
Step-by-step explanation:
15*8=120
Answer:
The answer is -77
Step-by-step explanation:
Ok, so assuming by x2 you mean x squared, I will solve this. So basically when you have a function, f(-7) would mean that you would have to replace all the x's in the equation with -7. So let's write that out. that would be f(-7) = -7^2 + (-7*4). So now according to PEMDAS, you would solve the exponent first, and -7^2 is equal to -49, because when you solve it you would do -(7^2), which is -(49), which is then -49. So now you have f(-7)= -49+ (4*-7). Solving for (4*-7), you get -28. This leaves you with -49 + (-28), which is -49 - 28. Simplifying that, you get the answer, which is -77.
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The answer is 17. 72
Step by step
0.02x^2 = 6.28
x^2 = 6.28 / 0.02
x^2 = 314
x= square root of 314
x = 17. 72
