Answer:
m=-5
Step-by-step explanation:
You first do distributive property:
(-m*-1)+(-1*-7)+(-3*4m)+(-3*-3)=71
that simplifies to:
16-11m=71
Next subtract 16 on both sides and you get:
-11m=55
Then divide by -11,
m=-5
Answer:
6 or 16
Step-by-step explanation:
math is math
Answer:
C.
Step-by-step explanation:
The formula for surface area is
LA + 2B
LA indicated Lateral Area and can be found multiplying perimeter of base by the height.
7 + 7 + 14 + 14 = 42 * 7 = 294
Multiply the LA from above with the area of base times 2.
98 * 2 = 196
294 + 196 = 490, so the surface area of the rectangular prism is 490 units.
Answer:
She changed the symbols in the first two problems because they were divided by a negative number whereas she shouldn't have changed the symbol in the last problem as it was not divided by a negative number and so the sign remains the same.