It is substitution. Because you are substituting 3=y into x+5=3
Answer:

Step-by-step explanation:
We are given that

Side of base=4 cm
l=w=4 cm
Height,h=12 cm
We have to find the rate at which the water level rising when the water level is 4 cm.
Volume of pyramid=


Substitute the value

Differentiate w.r.t t

Substitute the values


Answer:
I believe your answer is -7/54
Answer:
FD = 25.94
Step-by-step explanation:
13x - 16 = 4x + 11 (Tangents drawn from an external point are equal)
13x - 4x = 11 + 16
9x = 27
x = 3
substituting x in 4x + 11,
4(3) + 11
12 + 11
23
ΔFED is a right triangle,
FD² = FE² + DE²
FD² = 12² + 23²
FD² = 144 + 529
FD² = 673
FD = 25.94
Answer:
6*10^-6
Step-by-step explanation:
You need a whole number for the scientific notion, right? To find that number above 1 and under 10, you can move the decimal point over until you get that number. Count the amount of spaces you moved the decimal point, and that's your number for scientific notation. To get the negative sign, you have to determine whether for scientific notation you make your number bigger or smaller. If you make it bigger, you have to put a negative sign on the exponent. If the number becomes smaller, it is a positive number. Hope this helps!