The easiest way to think of these is to put them in terms of percentages. Obviously, if you are SAVING 25%, you are SPENDING 75%. So if she SPENDS 13.50, we can easily use the 75% in an equation. $13.50 = .75x, with x being what the shoes cost originally. The .75 indicates that she is spending 75% of what the original cost is. You don't have any examples to pick from, but this is the best way to explain what one of the equations could be. You could also base it on money saved, but the equation is not quite as neat.
to write 98 as a product of its prime factors we have to first find the prime factors of 98
prime factors are prime numbers by which the given number can be divided by.
98 we have to keep dividing it by prime numbers
98 is an even number so we can first divide by 2
98 / 2 = 49
49 is a multiple of 7 which too is a prime number so we can divide 49 by 7
49/7 = 7
7 can be divided again by 1
7/7 = 1
98 is divisible by 2 and 7
so 98 written as a product of prime factors is
98 = 2 x 7 x 7
Answer:
Step-by-step explanation:
step 1
Alex’s printer
we know that
print 8 photos in 12 minutes
so
by proportion
Find how long will it take the printer to print 120 photos
step 2
Khalil’s printer
we know that
print 24 photos in 1 hour (60 minutes)
so
by proportion
Find how long will it take the printer to print 120 photos
step 3
Find the difference
Answer:
Turn your refrigerator down. ...
Use energy-efficient light bulbs. ...
Clean or replace air filters. ...
Do full loads. ...
Air-dry dishes and clothes. ...
Cook using the right-sized burner. ...
Cut down on air leaks in your home.
