Answer:
4. x=10
5. x=15
6. x=20
7. x=4
Step-by-step explanation:
4. 50+4x=90
90-50=40
40/4=10
x=10
5. (2x+60)+6x=180
6x+2x=8x
8x+60=180
180-60=120
8x=120
120/8=15
x=15
6. 3x+30=90
90-30=60
60/3=20
x=20
7. (8x+120)+7x=180
8x+7x=15x
15x+120=180
180-120=60
15x=60
60/15=4
x=4
Answer:
h = 0.64 ft
Step-by-step explanation:
![s = \frac{14 + 12 + 6}{2} = \frac{32}{2} = 16 \: ft \\ \\ A = \sqrt{(s - 14)(s - 12)(s - 6)} \\ \\ A = \sqrt{(16 - 14)(16 - 12)(16 - 6)} \\ \\ A = \sqrt{(2)(4)(10)} \\ \\ A = \sqrt{80} \\ \\ A = 8.94427191\\ \\ A \approx 8.94 \: {ft}^{2}](https://tex.z-dn.net/?f=s%20%3D%20%20%5Cfrac%7B14%20%2B%2012%20%2B%206%7D%7B2%7D%20%20%3D%20%20%5Cfrac%7B32%7D%7B2%7D%20%20%3D%2016%20%5C%3A%20ft%20%5C%5C%20%20%5C%5C%20A%20%3D%20%20%5Csqrt%7B%28s%20-%2014%29%28s%20-%2012%29%28s%20-%206%29%7D%20%20%5C%5C%20%20%5C%5C%20A%20%3D%20%20%5Csqrt%7B%2816%20-%2014%29%2816%20-%2012%29%2816%20-%206%29%7D%20%20%5C%5C%20%20%5C%5C%20A%20%3D%20%20%5Csqrt%7B%282%29%284%29%2810%29%7D%20%20%5C%5C%20%20%5C%5C%20A%20%3D%20%20%5Csqrt%7B80%7D%20%20%5C%5C%20%20%5C%5C%20A%20%3D%20%208.94427191%5C%5C%20%20%5C%5C%20A%20%20%5Capprox%20%208.94%20%5C%3A%20%20%7Bft%7D%5E%7B2%7D%20)
A = 14h
8.94427191 = 14h
h = 8.94/14
h = 0.638571429
h = 0.64 ft
Answer: 24 cubic inches
Step-by-step explanation:
Answer: 5¹/₄ cups of dog food
Step-by-step explanation:
There are seven days in a week.
If she feeds the dog 3/4 every day, the amount she feeds Rusty every week is:
= 3/4 * 7
= 21/4
= 5¹/₄ cups of dog food