X equals -1.
y equals -9
simply plug 5x-4 into 7x-3y=20.
which is 7x-3(5x-4)=20
Answer:
69.5%
Step-by-step explanation:
A feature of the normal distribution is that this is completely determined by its mean and standard deviation, therefore, if two normal curves have the same mean and standard deviation we can be sure that they are the same normal curve. Then, the probability of getting a value of the normally distributed variable between 6 and 8 is 0.695. In practice we can say that if we get a large sample of observations of the variable, then, the percentage of all possible observations of the variable that lie between 6 and 8 is 100(0.695)% = 69.5%.
<span>y=-40x+100 This equation says your friend lives 100 miles away and travels 40 miles per hour. He takes 2.5 hours to get there.
y = -40x + 100 If y=0 then x = 100/40 = 2.5 hours and if x=0 then y=100.
You are 150 miles away and it takes you 2.5 hours to get there so your equation is:
0 = -2.5v + 150 You are solving for velocity.
v = 150/2.5 = 60 miles per hour. Now we can write the answer to the problem.
y = -60x + 150 Compare that to the original statement.
y = -40x + 100 Your buddy's speed is 40 and yours is 60. He has 100 miles to go and you have 150. Otherwise it's the same equation.</span><span>
</span>
Answer: 
Step-by-step explanation:
Group like terms:
Simplify the arithmetic:
Add 7 to both sides:
Simplify the arithmetic:
Simplify the arithmetic:
Divide both sides by 3:
Simplify the fraction:
Find the greatest common factor of the numerator and denominator:
Factor out and cancel the greatest common factor and the answer will be:
