S is sydney's age. devaughn's age is d. d=s-13. The total sum is 77=s+d OR 77=s+s-13. 77=2s-13. add 13 to both sides. 90=2s. sydney's age is 45. to check, substitute sydney's age in. d=45-13=32. 77=45+32=77.
Subtract 4x from both sides
4x +2 = 7x - 13 would then simplify to
3x - 13 = 2 ( you can switch the problem around as long as you dont switch the variables around )
then you have to + 13 which simplifies to
3x = 15
then you divide by 3 which equals
x=5
When the gradient of the slope is negative or positive, the slope is negative or positive respectively.
or if u wanna tell by looking at the straight line graph, then if it makes an acute angle with the x-axis it's positive, if it makes an obtuse angle with x-axis its negative.
the slope is zero when the graph is horizontal
then slope is undefined when eh graph is vertical.
hope this helps
Answer:
The answer is the option
Step-by-step explanation:
Let
x-------> the balance at the beginning of the month
y------> total amount in deposits this month
we know that
-----> equation A
------> equation B
Substitute
equation B in equation A
If u mean 62 times 45 on its own, then the answer is 2790. hope that helped!!
