Answer:
Part 1) Subtraction Property of Equality
Part 2) This property can be used , because addition and subtraction have inverse relationships
Step-by-step explanation:
we know that
The<u><em> subtraction property of equality</em></u> tells us that if we subtract from one side of an equation, we also must subtract from the other side of the equation to keep the equation the same
so
we have

Solve for y
Applying Subtraction Property of Equality
subtract 10.50 both sides


Remember that this property can be used , because addition and subtraction have inverse relationships.
Answer:
It required 3 cones to fill up the cylinder with the same height and diameter.
Step-by-step explanation:
Let the radius of the cone and cylinder be r.
Let the height of the cone and cylinder be h.
As we know that
....(1)

It can be observed that the volume of a cone is
rd the volume of the cylinder. so, multiply the volume of the cone by 3.


(From equation 1 )
Hence, It required 3 cones to fill up the cylinder with the same height and diameter.
Answer:
She needs $30.
Step-by-step explanation:
170 minus 140 is 30.
I think maybe 3) would make the most sense because she wants a random sample of students and the other options are specific on the type of students.
The function F(t) = 34000(.98)^t, since b = 0.98 < 1, hence the function is decaying and the initial value of the expression is 34,000.
<h3>Exponential equation</h3>
The inverse of exponential equation is logarithmic equation. The standard exponential equation is expressed as;
y = ab^x
where
a is the initial value
b determine the growth rate or decay.
If the value if b < 1, then it is a decay otherwise it is growth.
Given the function F(t) = 34000(.98)^t, since b = 0.98 < 1, hence the function is decaying and the initial value of the expression is 34,000.
Learn more on exponential function here: brainly.com/question/12940982
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