Answer:
Part 22) The area is and the perimeter is
Part 24) The area is and the perimeter is
Part 26) The area is equal to
Step-by-step explanation:
Part 22) Find the perimeter and area
step 1
The area of a rectangle is equal to
we have
Remember that
When multiply exponents with the same base, adds the exponents and maintain the base
substitute in the formula
step 2
The perimeter of a rectangle is equal to
we have
substitute in the formula
Part 24) Find the perimeter and area
step 1
The area of triangle is equal to
where
Remember that
When multiply exponents with the same base, adds the exponents and maintain the base
substitute the given values
step 2
Find the perimeter
I will assume that is an equilateral triangle (has three equal length sides)
The perimeter of an equilateral triangle is
where
substitute
Part 26) Find the area
The area of a circle is equal to
where
Remember the property
substitute in the formula the given value
Answer:
y
=
4
(
1
2
)
x
Explanation:
An exponential function is in the general form
y
=
a
(
b
)
x
We know the points
(
−
1
,
8
)
and
(
1
,
2
)
, so the following are true:
8
=
a
(
b
−
1
)
=
a
b
2
=
a
(
b
1
)
=
a
b
Multiply both sides of the first equation by
b
to find that
8
b
=
a
Plug this into the second equation and solve for
b
:
2
=
(
8
b
)
b
2
=
8
b
2
b
2
=
1
4
b
=
±
1
2
Two equations seem to be possible here. Plug both values of
b
into the either equation to find
a
. I'll use the second equation for simpler algebra.
If
b
=
1
2
:
2
=
a
(
1
2
)
a
=
4
Giving us the equation:
y
=
4
(
1
2
)
x
If
b
=
−
1
2
:
2
=
a
(
−
1
2
)
a
=
−
4
Giving us the equation:
y
=
−
4
(
−
1
2
)
x
However! In an exponential function,
b
>
0
, otherwise many issues arise when trying to graph the function.
The only valid function is
y
=
4
(
1
2
)
x
28% of 1.00 = 28
To get your answer, multiply .28 * 100.
28% of $1.00 = 28 cents.
Answer:
I believe the answer is 20 and 30
Answer:
Step-by-step explanation:
Let the number be .
The number is 5.