Which statement is true about the polynomial
–10m4n3 + 8m2n6 + 3m4n3 – 2m2n6 – 6m2n6 after it has been fully simplified?

the simplified version is -7m^4n^3, assuming the numbers after m and n are supposed to be exponents.

(a monomial with a degree of 7).

Step-by-step explanation:

The polynomial  consists of 5 monomials of form  and

To simplify this polynomial, group terms that are of the same form:

1.-10m^4n^3+ 3m^4n^3=m^4n^3(-10+3)=-7m^4n^3.

2.8m^2n^6-2m^2n^6-6m^2n^6=m^2n^6(8-6-2)=m^2n^6\cdot 0=0.

Then the simpliest form of the polynomial  is  You can see that only one monomial left and this monomial has a degree of 4+3=7.

three-fourths of an hour

36÷48=0.75

0.75=

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles