The value of x where the expression –4x – 8 will be equivalent to –9x –1 will be 7/13.
<h3>How to calculate the value?</h3>
It should be noted that we are simply to find the value of x where the expression –4x – 8 will be equivalent to –9x –1.
This will be:
= +4x - 8 = -9x - 1.
4x + 9x = -1 + 8
13x = 7
Divide
x = 7/13
The value is 7/13.
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5 is correct and 6 is 1/2
You are not right on #46. Since he is going 50 miles in 50 minutes, that means that he is going a mile a minute. That means in an hour, he will have gone 60 miles. That means he will have been going 60 mph, so the correct answer is (4)
I cannot help you with 47 because you did not include the picture it shows.
Represent Age of Time Traveler =========> X
Solve:
x = 3(x - 20 )
Step 1: Simplify Both sides of equation:
x = 3(x - 20 )
x = (3) (x) + (3) ( - 20 ) (Distribute ):
x = 3x + - 60
x = 3x - 60
Step 2: Subtract 3x from both sides:
x - 3x = 3x - 60 - 3x
- 2x = - 60
Step 3: Divide both sides by -2:
- 2x / - 2 = - 60 / - 2
x = 30
Answer: Our Time Traveler is 30 years old.
Hope that helps : )
Answer:
sum: 7.3 difference:2.7
Step-by-step explanation:
