<h2>
Answer: 12 (B)</h2>
Step-by-step explanation:
If x + 5 = 13
then x = 13 - 5
x = 8
∴ 4 ( x - 5 ) = 4 ( 8 - 5)
= 12 (B)
1/x+x/(x+2)=1
take LCM
x+2+x^2=x(x+2)
x=2
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2)
(x+1)(x+3)=0
x= - 1, x= - 3
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3)
after solving both side u will get
3x=2x+2
x=2
--------------------------------
1/(x-1)(x+1)=2/(x-1)(x+2)
u will get same will cross out each other
1/(x+1)=2/(x+2)
(x+2)=2(x+1)
x+2=2x+2
x=0
we are given
To find x-intercept means we have to find zeros
and for finding zeros , we will use quadratic formula
and we have it has two x-intercepts
so, it's discriminant must be greater than 0
so, we will find discriminant
now, we can compare with
and then we can find a , b and c
now, we can find D
It has two x-intercepts
so,
now, we can solve for m
............Answer
Considering the described changes, the temperature at 6 pm was of -14.5ºF.
<h3>How to find the temperature at 6 pm?</h3>
We look at the temperature for each interval, as follows:
- At 9 am, the temperature was -8.4°F.
- Between 9am and noon, the temperature increased by 2.6°F, hence, at noon, the temperature was of -8.4ºF + 2.6ºF = -5.8ºF.
- Between noon and 3pm, the temperature rose 1.2°F, hence, at 3 pm, the temperature was of -5.8ºF + 1.2ºF = -4.6ºF.
Between 3pm and 6pm, the temperature went down 9.9°F, hence at 6 pm, the temperature was given as follows:
-4.6ºF - 9.9ºF = -14.5ºF.
The temperature at 6 pm was of -14.5ºF.
A similar problem, involving change of temperatures, is given at brainly.com/question/3066572
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