Donnell practiced for 7 hours while Marcus practices the piano for 4 hours.
Determine the known quantities and designate the unknown quantity as a variable while trying to set up or construct a linear equation to fit a real-world application.
In other words, an equation is a set of variables that are constrained through a situation or case.
Let's say the number of hours piano played by Donnell is D while by Marcus is M.
Then,
Since Donnell practiced the piano 3 hours longer than Marcus.
D = 3 + M ⇒ D - M = 3
And,
Together, Marcus and Donnelly practiced the piano for 11 hours.
D + M = 11
By adding
2D = 14
D = 7
And,
M = 11 - 7 = 4
Hence "Donnell practiced for 7 hours while Marcus practices the piano for 4 hours".
For more about the equation,
#SPJ2
(9c-8) + (2c-6)
Answer:
The sum is 11c - 14.
Answer:
m = (- 3, 3 )
Step-by-step explanation:
given endpoints (x₁, y₁ ) and (x₂, y₂ ) then the midpoint M is
M = ( , ) ← midpoint formula
let (x₁, y₁ ) = g (8, - 6 ) and (x₂, y₂ ) = h (- 14, 12 ) , them midpoint m is
m = ( , ) = ( , ) = (- 3, 3 )
a. Find the exact length of c in un-simplified radical form
b. Find the exact length of c in simplified radical form
c. Find c to the nearest hundredth.
Hello there!
Take 3(6+7)
. We can add within the parentheses, and then multiply:
3(6+7)=3(13)=39
Or, you can multiply each addend by the 3
, and then add.
3(6+7)=3(6)+3(7)=18+21=39
Either way, you get the same answer.
Hope this helped!
HyperZ ^_^
Explanation:
Distributive property: →
Multiply by the numbers from left to right.
Then, you can also divide into the numbers.
Product it's going to be multiply by the numbers, fractions, factors, and multiples.
Hope this helps!
Thanks!
Have a great day!