Answer:
At a speed of 57 mph for 8 hr a driver will travel 456 mi
Step-by-step explanation:
Here we have a summary of the letters for each variable:
Speed ---> r (in units of mph)
Time ---> t (in units of hr)
Distance ---> d (in units of mi)
These three variables are related by the next formula:
d = rt
In the data they give to you: 57 mph and 8 hr, they are telling you the r and the t, respectively:
r = 57 mph
t = 8 hr
The only thing you have to do is replace the values:
d = rt ----> d = 57 mph x 8 hr
d = 456 mi
Answer:
Y=-4x+8
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
this is a rate of time, 60 must be multiplied by the hours to get the days
Answer: 90
Step-by-step explanation:
216/36 is 6. Then, on average, it's 15 weeks. So 6x15 is 90. There's your answer. I think.
So to find x we need to add both HI and IJ - which we know equals 7:
Then we need to combine like terms:
And then set equal to 0:
Then we can factor:
So then when we set each term equal to 0 individually and solve for x we get: x = -5 and x = -2.
So we have these two values - we need to test which one is correct. So if we go back to the HI segment, let's try plugging in x = -5:
This gives us a negative number, which we know that length cannot be negative. Let's try x = -2:
This gives us a positive length and therefore we can keep this value.
So the answer is: x = -2.
