Answer:
19
Step-by-step explanation:
The triangle is an isosceles and so angle SRT and angle STR are equal
also:
Angle SRT and angle STU are supplementary so their sum is equal to 180
7x + 2x + 9 = 180 add like terms
9x + 9 = 180 subtract 9 from both sides
9x = 171 divide both sides by 9
x = 19
Answer:
15) 
16) 12 hours
Step-by-step explanation:
15) 
16) If Jim drove 168 mi in 4 hours, this means it takes him
this many hours to drive 1 mile. So if we multiply this by 504 mi:
Answer:
Celia can get 4 goldfish for $1.00.
Step-by-step explanation:
If you take 12 and divide it by 3 you get 4. I hope this helps.
Answer:
Step-by-step explanation:
let 25 % copper=x kg
75 % copper=(100-x) kg
0.25 x+(100-x)*0.75=100*0.61
25x+7500-75 x=6100
-50 x=-1400
50 x=1400
5x=140
x=28
25 % of Copper=28 kg
75 % of Copper=100-28=72 kg
