<span>9-25x^2= (3 - 5x)(3 + 5x)
---------------------------</span>
The answer you are looking for is .1
Answer:
r=7
d=14
Step-by-step explanation:
You need to divide and then you need to you the symbol pie.
Hey there!
To find this, we should figure out what 1/18 can be multiplied by to get 5/6, because when we end up adding them together after multiplying, 5/6x - 5/6x eliminates x.
One thing that would make this easier is to make 1/18 and 5/6 have the same denominator.
6 goes into 18 3 times, so what we could do is multiply both the numerator and denominator of 5/6 by 3.
That gives us 15/18.
Now that we have the denominators the same, we can see that 1/18 goes into 15/18 15 times by comparing the numerators.
This means the first equation should be multiplied by 15.
Hope this helps!
Answer:
74
Step-by-step explanation:
The mean of any set of numbers is simply the sum of the numbers divided by however many numbers you have. Because of this you can write the following equation
Mean = (sum of numbers)/(number of numbers)
Let's say that the missing test score is called x:
Mean = 80 = (80 + 85 + 73 + 78 + 90 + x)/6
80(6) = 80 + 85 + 73 + 78 + 90 + x
480 = 80 + 85 + 73 + 78 + 90 + x
x = 480 - 80 - 85 - 73 - 78 - 90
x = 74