Simplify 2/5+2/5-7/15

Step-by-step explanation:

Simplified:

Hope this helps

B)

Step-by-step explanation:

The given expression is -8g+3+5-7g

We regroup the terms to obtain;

We now combine the similar terms to obtain;

The correct option is B.

B)

Step-by-step explanation:

The given expression is -8g+3+5-7g

We regroup the terms to obtain;

We now combine the similar terms to obtain;

The correct option is B.

The answer is in the image 

y=2x+15

where y=Value of coin

x=Age in years

Value of coin after 19 years=2*19+15

=$53

Therefore, Value after 19 years=$53

F=ma

where F=force

m=mass

a=acceleration

Here,

F=4300

a=3.3m/s2

m=F/a

    =4300/3.3

    =1303.03kg

Salesperson will make 6% of 1800

=(6/100)*1800

=108

Salesperson will make $108 in $1800 sales

The solution is given in the image below

Speed=Distance/time

Here,

distance=15m

time=1sec

speed=15/1=15m/sec

Distance=Speed*time

time=15min=15*60sec=900sec

Distance travelled in 15 min=15*900=13,500m

=13500/1000 km=13.5Km

The wood before starting =12 feet

Left wood=6 feet

Wood used till now=12-6=6 feet

Picture frame built till now= 6/(3/4)

=8 pieces

Therefore, till now 8 pieces have been made.