The first way is to cross multiply
4/5 = 28/x
4x = 5*28
4x = 140
4x/4 = 140/4
x = 35 which is the answer
=============================================
The second method is to note the denominators 4 and 28, and to ask yourself "what times 4 gets me 28?". The answer being 7, so 7*4 = 28. If you multiply top and bottom of the fraction 4/5 by 7, then you end up with 7*4 = 28 up top and 7*5 = 35 down below. This is another way of seeing how 4/5 = 28/35
Either way, the answer is x = 35
Answer:
Step-by-step explanation:
Substitute m=(2x+1) and n=(6) in m+n=(9).
We are finding the value of the x variable.
Add the numbers on the left side of the equation.
Subtract 7 from both sides.
Divide both sides by 2.
The value of the x variable is 1.
Answer:
the student ate 1/2
Step-by-step explanation:
Each year the rent is multiplied by (1+0.055), so in 7 years, Natalie's rent will be
.. $900*1.055^7 = $1309.21
Answer:15
Step-by-step explanation: this is an equilateral triangle and 45-15-15=15 so no matter what it would be 15
