Answer:
B. 9 < 10,
C. 10 > 9,
D. 9 (is less than or equal to ) 10
Step-by-step explanation:
A.10 < 9, not true 10 is greater than 9
B. 9 < 10, true 9 is less than 10
C. 10 > 9, true 10 is greater than 9
D. 9 (is less than or equal to ) 10 true 9 is less than or equal to 10
A = 4,
we denote one side of the rectangle with
a
, and the other with
b
we can write, that:
a
⋅
b
=
16
so we can write, that
b
=
16
a
Now we can write perimeter
P
as a function of
a
P
=
2
⋅
(
a
+
16
a
)
We are looking for the smallest perimeter, so we have to calculate derivative:
P
(
a
)
=
2
a
+
32
a
P
'
(
a
)
=
2
+
(
−
32
a
2
)
P
'
(
a
)
=
2
−
32
a
2
=
2
a
2
−
32
a
2
The extreme values can only be found in points where
P
'
(
a
)
=
0
P
'
(
a
)
=
0
⇔
2
a
2
−
32
=
0
2
a
2
−
32
=
0
x
a
2
−
16
=
0
×
x
.
.
a
2
=
16
×
×
x
a
=
−
4
or
a
=
4
Since, length is a scalar quantity, therefore, it cannot be negative,
When
a
=
4
,
b
=
16
4
b
=
4
Answer:
2sqrt(10)
Step-by-step explanation:
Use the Pythagorean theorem.
x^2 + 3^2 = 7^2
x^2 + 9 = 49
x^2 = 40
x = sqrt(40)
x = 2sqrt(10)
Answer:
2/8 - 1/5x
1/4 - 1/5x
5/20 - 4/20x
*all possible answers listed above*
Step-by-step explanation:
Are there choices?
Alright, so the equation we have here is 22.75x+32=128.69
Now we just solve
-32 on both sides, we get
22.75x=96.69
divide by 22.75 on both sides we get
x=4.2501989
So 4 hours
You add the 4.25 hours
10, 11, 12, 1 is the hour
And .25 is a fourth, and a fourth of 60 minutes is 15 minutes
So he left at 1:15 pm
