Answer:
48
Step-by-step explanation:
you can do 25 minus 18.76 then you get 6.24 then divide that by .13 and you get 48
Answer:175
Step-by-step explanation:
1. Turn 28% into a decima: 0.28
2. Multiply 1250 by 0.28 to get the amount of ninth grade students:350
3. Half the amount of ninth grade students:175
Answer:
x = 19
Step-by-step explanation:
1. add 31 on both sides (you wanna get the "x" by itself)
ex: 2x - 31 = 7
+31 +31
2. the 31s cancel each other out so now you add 31 + 7
2x = 7
+31
___________
38
3. divide 2 on both sides so the 2s cancel each other out and only the x is left
ex: 2x / 2 = x 38 ( the 38 stands alone)
4. now divide 38/2 and you have your answer
X= 19
Answer:
q=26.92 p=31.13
Step-by-step explanation:
![p^{2} +16q=1400\\\\q=\frac{1400-p^{2} }{16} ;\\\\700-p^{2} +10q=0\\\\q=\frac{p^{2}-700 }{10} ;\\\\](https://tex.z-dn.net/?f=p%5E%7B2%7D%20%2B16q%3D1400%5C%5C%5C%5Cq%3D%5Cfrac%7B1400-p%5E%7B2%7D%20%7D%7B16%7D%20%3B%5C%5C%5C%5C700-p%5E%7B2%7D%20%2B10q%3D0%5C%5C%5C%5Cq%3D%5Cfrac%7Bp%5E%7B2%7D-700%20%7D%7B10%7D%20%3B%5C%5C%5C%5C)
![q=q\\\\\frac{1400-p^{2} }{16} =\frac{p^{2}-700 }{10} \\\\10(1400-p^{2})=16(p^{2}-700)\\\\14000-10p^{2}=16p^{2}-11200\\\\14000+11200=16p^{2}+10p^{2}\\\\25200=26p^{2}\\\\p^{2}=\frac{25200}{26} \\\\p=+\sqrt{\frac{25200}{26}} \\\\p=31.13](https://tex.z-dn.net/?f=q%3Dq%5C%5C%5C%5C%5Cfrac%7B1400-p%5E%7B2%7D%20%7D%7B16%7D%20%3D%5Cfrac%7Bp%5E%7B2%7D-700%20%7D%7B10%7D%20%5C%5C%5C%5C10%281400-p%5E%7B2%7D%29%3D16%28p%5E%7B2%7D-700%29%5C%5C%5C%5C14000-10p%5E%7B2%7D%3D16p%5E%7B2%7D-11200%5C%5C%5C%5C14000%2B11200%3D16p%5E%7B2%7D%2B10p%5E%7B2%7D%5C%5C%5C%5C25200%3D26p%5E%7B2%7D%5C%5C%5C%5Cp%5E%7B2%7D%3D%5Cfrac%7B25200%7D%7B26%7D%20%5C%5C%5C%5Cp%3D%2B%5Csqrt%7B%5Cfrac%7B25200%7D%7B26%7D%7D%20%5C%5C%5C%5Cp%3D31.13)
replace p in any equation and
![q=\frac{1400-p^{2} }{16} \\\\q=\frac{1400-(31.13)^{2} }{16}\\\\q=26.92](https://tex.z-dn.net/?f=q%3D%5Cfrac%7B1400-p%5E%7B2%7D%20%7D%7B16%7D%20%5C%5C%5C%5Cq%3D%5Cfrac%7B1400-%2831.13%29%5E%7B2%7D%20%7D%7B16%7D%5C%5C%5C%5Cq%3D26.92)
Answer: -20/3
Step-by-step explanation: