T) -7x+10y=20. M) -3x+y=-2 - ,
2(8x-5y)=35(2) -1(x+y)=-6(-)
-7x+10y=20. -3x+y=-2
16x-10y=70. -x-y=6
9x=90. -4x=4
[x=10] [x= -1]
-7(10)+10y=20. -3(-1)+y=-2
-70+10y=20. 3+y=-2
10y=90. [y= -5]
[y=9]
Answer:
<h2>
![{7}^{3} (as \: a \: single \: power \: of \: 7)](https://tex.z-dn.net/?f=%20%20%7B7%7D%5E%7B3%7D%20%28as%20%5C%3A%20a%20%5C%3A%20single%20%5C%3A%20power%20%5C%3A%20of%20%5C%3A%207%29)
</h2>
Step-by-step explanation:
<em><u>Given</u></em><em><u> </u></em><em><u> </u></em>
![{7}^{4} \div 7](https://tex.z-dn.net/?f=%20%7B7%7D%5E%7B4%7D%20%20%5Cdiv%207)
<em><u>Since</u></em><em><u>,</u></em>
![{a}^{x} \div {a}^{y} = {a}^{x - y}](https://tex.z-dn.net/?f=%20%7Ba%7D%5E%7Bx%7D%20%20%5Cdiv%20%20%7Ba%7D%5E%7By%7D%20%20%3D%20%20%7Ba%7D%5E%7Bx%20-%20y%7D%20)
<em><u>Hence</u></em><em><u>,</u></em>
![= {7}^{4 - 3}](https://tex.z-dn.net/?f=%20%3D%20%20%7B7%7D%5E%7B4%20-%203%7D%20)
![= {7}^{3} (ans)(as \: a \: single \: power \: of \: 7)](https://tex.z-dn.net/?f=%20%3D%20%20%7B7%7D%5E%7B3%7D%20%28ans%29%28as%20%5C%3A%20a%20%5C%3A%20single%20%5C%3A%20power%20%5C%3A%20of%20%5C%3A%207%29)
Answer:
Step-by-step explanation:
A and E are congruent T and P are congruent the other one is T and S and the other A and B
Answer:
The horsepower required is 235440 watt.
Step-by-step explanation:
To find : What horsepower is required to lift an 8,000 pound aircraft six feet in two minutes?
Solution :
The horsepower formula is given by,
![W=\frac{mgh}{t}](https://tex.z-dn.net/?f=W%3D%5Cfrac%7Bmgh%7D%7Bt%7D)
Where, W is the horsepower
m is the mass m=8000 pound
g is the gravitational constant g=9.81
t is the time t= 2 minutes
h is the height h=6 feet
Substitute all values in the formula,
![W=\frac{8000\times 9.81\times 6}{2}](https://tex.z-dn.net/?f=W%3D%5Cfrac%7B8000%5Ctimes%209.81%5Ctimes%206%7D%7B2%7D)
![W=\frac{470880}{2}](https://tex.z-dn.net/?f=W%3D%5Cfrac%7B470880%7D%7B2%7D)
![W=235440](https://tex.z-dn.net/?f=W%3D235440)
Therefore, The horsepower required is 235440 watt.