Answer:
x=5
Step-by-step explanation:
Well all i did was guess a random number from 1-10 so I could see what numbers make the equation bigger than -18 and the fist thing I guessed was 5 so this is what I did
8-6*5=-22
And them I said let me see if any multiples equal -18 so I went to for and did this
8-6*4=-16
That's when I guessed the answer if i looked at the sign correctly!
It's asking you to work out how many minutes it will take to drive to a school if you're driving at a speed of 35 miles per hour (mph).
But there's a problem with the question because it doesn't tell you how far away the school is.
But this is how you are supposed to do it:
Distance ÷ 35 = answer (in hours)
Answer (in hours) × 60 = Final answer (in minutes).
It's like this because time = distance ÷ speed, and the question asks for the answer in minutes, but the unit is in miles per hour, so you multiply by 60 to get the answer in minutes.
Hope I helped :)
Answer:
Option C.
Step-by-step explanation:
Let 
be a quadratic function
Then we do the function 
Where b is a real number.
If 
then the function 
represents a horizontal compression of the function 
If 
Then the function represents a horizontal expansion compression of the function by a factor of 
In this case, the equation is:
Then:
Thus
is a horizontal expansion of the function by a factor of 
.
The correct option is: Option C
Answer:
1/20
Step-by-step explanation:
3/10 - 1/4
First, convert the fractions to a common denominator:
3/10 *2/2 = 6/20
1/4 * 5/5 = 5/20
Now put them back into the equation and solve:
6/20 - 5/20 = 1/20
Another way to do this:
3/10 - 1/4
Convert the fractions into decimals:
3/10 = 0.3
1/4 = 0.25
substitute back into the equation and solve:
0.3 - 0.25 = 0.05
convert back into fractions:
0.05 = 1/20
So basically, the first question after the word problem is asking you to write an equation to represent the value of Mama's car after a certain amount of years (t). Since the value of her car decreases by 3% each year, you could multiply 3% by the original value of her car, to find what 3% is, OR you could subtract 19,400 (the value of her car after 1 year) from 20,000 INSTEAD of multiplying 20,000 by 3%.
Equation: value=20,000 - 600t
To answer the next question, just plug it into the equation you created.
500<20,000 - 600t
-19500< -600t
32.5>t
Final Answer: It would take at least 32 and 1/2 years for the value of Mama's car to be less than $500.
Hope this helps!! :)
