30b + 100u = 900
5b + 25u = 200....multiply by -6
------------------
30b + 100u = 900
-30b - 150u = - 1200 (result of multiplying by -6)
------------------add
-50u = - 300
u = 6 <== upgrated phones sold
30b + 100u = 900
30b + 100(6) = 900
30b + 600 = 900
30b = 900 - 600
30b = 300
b = 10 <== basic phones sold
Answer:
8
Step-by-step explanation:
Since 24 is the original length, you would have to see what number to divide by to get 6.
24 divided by 4 is 6.
Now we know that 1/4 is the scale factor, so apply that to 32.
32 divided by 4 is 6
That's your answer!
Brainliest would v much be appreciated
Answer:
Step-by-step explanation:
step 1
Convert mixed numbers to an improper fractions
step 2
we know that
A teacher reviews 9/2 papers per hour
using proportion
Find how many papers will the teacher review in 19/3 hours
Let
x-----> the number of papers
Convert to mixed numbers
