Hello,
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Answer B
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2x²+28x-5=2(x²+2*7x+49)-5-2*48
=2(x+7)²-103
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(x-5)(4x+1)
4x^2 times -5 is -20 the factors of -20 are -1x20, 1x-20... but to make the -19x you would add together the 1 and -20 because 1-20 is -19.
This then splits off to factorise 4x^2-20x, making this side 4x(1x-5) carry the brackets over to make it 1(1x-5) joining the brackets together to make (4x+1)(x-5)
X=32
Explanation: X/9-1=4
X/8=4
8x4=32
Answer:
48*F
Step-by-step explanation:
You know that the daytime high temp was 13 higher than the given low of 35.
Thus your equation would be as follows:
35 + 13 = x
35 + 13 = 48
x = 48
hope this helps you out.
good luck and god bless!
Jeremy
Answer:
58 minutes
Step-by-step explanation:
Kelvin and Ornella completed the course in 1 hour 52 minutes
60 minutes + 52 minutes
= 112 minutes
Kelvin time is 54 minutes
Kelvin time is 4 minutes less than ornella
Hence Ornella time is 58 minutes