I think the root of "3x + 1 = 7" is 2...
23 can round to 20 and 21 can also round to 20 so all u do is 20x20=400 so 400 is your estimated answer
Answer:
616
Step-by-step explanation:
The equation to find the area of a trapezoid is: A = ½ (b
+b²) h.
b1=43
b2=45
h=14
Plug the variables in and solve.
![A=\frac{1}{2} (43+45)14](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B1%7D%7B2%7D%20%2843%2B45%2914)
![A=\frac{1}{2} (88)14](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B1%7D%7B2%7D%20%2888%2914)
![A=\frac{1}{2} (1232)](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B1%7D%7B2%7D%20%281232%29)
![A=616](https://tex.z-dn.net/?f=A%3D616)
Answer:
12
Step-by-step explanation:
Use pythag to solve.
x^2+5^2=13^2
x=12
Step-by-step explanation:
you would do 3 ÷ .99 and then when you get the answer from that you would multiply it by 5.