DEG is an quadrilateral triangle so they have the same length on all 3 sides.
hope that helped
question 1: 36x25
Answer: B. 900 square yards
Question 2: 231
question 3: 309,058,304
Answer:
45.2
Step-by-step explanation:
Explanation:
The idea here is that you need to use the mass of water, the heat added to the sample, and the specific heat of water to find the resulting change in temperature.
The equation that establishes a relationship between heat absorbed and change in temperature looks like this
q
=
m
⋅
c
⋅
Δ
T
, where
q
- heat absorbed
m
- the mass of the sample
c
- the specific heat of water, equal to
4.18
J
g
∘
C
Δ
T
- the change in temperature, defined as final temperature minus initial temperature
Plug in your values and solve for
Δ
T
- do not forget to convert the added heat from kilojoules to Joules
q
=
m
⋅
c
⋅
Δ
T
⇒
Δ
T
=
q
m
⋅
c
Δ
T
=
1.0
⋅
10
3
J
50.0
g
⋅
4.18
J
g
∘
C
=
4.785
∘
C
So, if the temperature of the water changed by
4.785
∘
C
, and its final temperature is now
50.0
∘
C
, it follows that its initial temperature was
Δ
T
=
T
f
−
T
i
⇒
T
i
=
T
f
−
Δ
T
T
i
=
50.0
∘
C
−
4.785
∘
C
=
45.2
∘
C
Answer:
The system determinant is 18.
Step-by-step explanation:
Given Equation are:
4x - 2y = 5 (1)
3x + 3y = 7 (2)
The determinant of the two equations, ax - by = X and cx - dy = Y can be written as:
(iii)
<u>In this case,</u>
<u />
a = 4
b = -2
c = 3
d = 3
By putting these value in the equation iii, we get:
=> (4)(3) - (-2)(3)
=> 12 - (-6)
=> 12 + 6
=> 18
Therefore, the system determinant is 18.