Answer:
x=-15
Step-by-step explanation:
x+70=55° (bcz a || b)
x=55-70
x=-15°
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Answer:
Jim's error is " He did not multiply Three-fifths by 2 before applying the power "
Step-by-step explanation:
Jim's evaluating expression is 
To verify Jim's error :
Jim's steps are
Therefore 
Jim's error is " He did not multiply Three-fifths by 2 before applying the power "
That is the corrected steps are
( using the property 
)
Answer:
r = 39/10 or 3.9
Step-by-step explanation:
Answer:
48 ft³
Step-by-step explanation:
To find the height, you can use the slant height and the base.
Using the Pythagorean Theorem and 3 as the triangle's base,
a²+b²=c²
3²+b²=5²
9+b²=25
b²=16
b=4
The height of the pyramid is 4.
Volume formula for the pyramid is 
Inserting our measurements:
If you know how to set up the format for long division, the answer is 9.5 because 4 goes into 3 zero times, and you don't necessarily need to write down the zero on top since it equals nothing in a whole number. then, 4 goes into 38 nine times. (yes 38 because you didn't do anything with the 3 so you just make it 38) 4 × 9 = 36. it doesn't exactly make 38, so you take away 36 from 38 and you are left with a remainder of 2. then to get no remainder, add a zero to the end of 38. so it would look something like 4/380 so you take down the zero next to the 2 so it makes 20, 4 × 5 = 20 and you are left with a remainder of 0 and the answer: 9.5 ( P.S.: added the decimal because it wasn't exactly equal when doing 4 × 9 so we had to add a zero)
