the answer to this system of linear equations is (54/5,8/5)
Combine like terms
6x + 9 - 16x
6x - 16x = -10x
-10x + 9 = -21
-9 -9
-10x = -30
-10x/-10 = -30/-10
x = 3
Answer: x = 3
Answer:
Julie would have 800 pens
Step-by-step explanation:
You would convert the fraction to a decimal which would be 0.8 and then you would multiply that by 1000 which would be 800. So Julie would have 800 pens.
4/5 = 8/10 = 0.8
0.8 * 1000 = 800
Answer: C. 31
Explanation:
Set A contains [50, 51, 52, … , 99, 100]. Set B contains [70, 71, 72, … , 136, 137]
Notice that Set B and Set A have an overlap from 70 to 100. So that is 31 elements in total. Hence the set A intersect B is [70, 71, 72, … , 99, 100] which is 31 elements.
Cheers.
Answer:
-8p + 7
n = --------------
8 - 5p
Step-by-step explanation:
Let's group the n terms in 5pn-8p=7n-7 .
Subtract 5pn from both sides. This results in -8p = 7n - 7 - 5pn
Now add 7 to both sides. This will group the n terms on the right side:
-8p + 7 = 7n - 5pn
Factor n out of 7n - 5pn:
-8p + 7 = n(7 - 5p)
Finally, divide both sides by (7 - 5n) to isolate n:
-8p + 7
n = --------------
8 - 5p