Answer:
3) 11x+3
4) 8x³+2x²+2x+8
Step-by-step explanation:
To work out the surface area of a triangular prism:
Base: l x w
= 4 x 7
= 28 feet
Top: l x w
= 5 x 7
= 35 feet
Two sides: 1/2 x b x h
= 1/2 x 4 x 3
= 6 + 6 (for the other side)
= 12 feet
Left side: l x w
= 3 x 7
= 21
Add all of them up:
= 28 + 35 + 12 + 21
= 96 square feet
Answer:
18 inches²
Step-by-step explanation:
The formula for the area of a rectangle is: 
Substitute the given values for the variables.

Therefore, the area of the rectangle is 18 inches².
Answer:
If the null hypothesis were true, the probability of getting the results I got in my study would be 0.0001, which is really small.
Step-by-step explanation:
In hypothesis test, the conditions in null hypothesis is<em> assumed true </em>and the <em>probability</em> of the results in the study are being evaluated.
If this probability is <em>smaller</em> then the significance level, then the null hypothesis is <em>rejected</em>.
Answer:
10 divided by 4
Step-by-step explanation:
/= devide