Hi there!
To solve this using substitution, we substitute the value of y in the equation.
5x + 8 = 8x + 9
Now, we simplify.
8 = 3x + 9
-1 = 3x
x = -1/3
We plug the value of x in,
y = 5 (-1/3) + 8
y = -1 2/3 + 8
y = 6 1/3
Hope this helps!
For one day he eats 3/4 cup of doog foods. For 7 days he eats 5 cup and 1/4 cup of food.
1/4×3=(1×3)/4=3/4
3/4×7=(3×7)/4=21/4
21/4=5 1/4.
Answer:
The formula to find the speed(s) of an object is s = d/t (d-distance, t-time)
=> d = s x t
Frank drove his car at an average speed of 43 mph for 2.5 hours
=> the distance he drove: d = 43 x 2.5 =107.5 miles
Hope this helps!
:)
Her brother is 9.
Because she is 3 years older than half his age, subtract 3 - 21. This gives 18. Then divide 18 / 2. This gives 9.
Answer:
x = -11
Step-by-step explanation:
5x + 2 = 4x - 9
-2 -2
5x = 4x - 11
-4x -4x
x = -11
