Answer:
1
Step-by-step explanation:
9x+5=4(x-2)+8
9x+5=4x-8+8
9x-4x=5
5x=5
x=1
Answer:
169
Step-by-step explanation:
(19×3)+(8×5)+(9×8)=169
Answer: 47.5 seconds
Step-by-step explanation:
380=2x+6x
8x=380
x=47.5 s
Hope this helped!
Answer:
Eighth graders have the greater median
Step-by-step explanation:
In box-and-whisker plots, the median is the line in the middle of the box. The median for the seventh graders is about 3.5 and the median for the eighth graders is 4. Therefore, the eighth graders have a greater median.
Answer:
Step-by-step explanation:
Cross section is the isosceles trapezoid.
<u>Area of trapezoid:</u>
We have one of the bases and the height.
Let the difference of the base lengths is x.
<u>We have:</u>
- (x/2)/h = cot θ ⇒ x = 2h cot θ
<u>The area is:</u>
- A = 1/2(w + w + 2h cot θ)h = (w + h cotθ)h
