Answer:
x=-5, y=-1
Step-by-step explanation:
Substitute x=-4+y into -2x-5y=15. So we have
-2(-4+y)-5y=15
8-2y-5y=15
-7y=7
y=-1
And x is -4+y so x= -4+(-1)= -5.
The entire figure could be taken as a trapezium
A=1/2h(a+b)
h=8, a=6 and b=10
A=1/2×8(6+10)
A=4×16
A=64sq Inch
Answer:
206.17
Key(s):
Substitute <em>d</em> for the actual diameter, 7.5, and <em>h</em> for the height, which is 5.
Step-by-step explanation:
≈ 206.17(2 DP)
Answer:
Divide each term by
5
and simplify.
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x
=
2
y
5
+
12
5
4
x
=
28
−
3
y
Replace all occurrences of
x
in
4
x
=
28
−
3
y
with
2
y
5
+
12
5
.
x
=
2
y
5
+
12
5
4
(
2
y
5
+
12
5
)
=
28
−
3
y
Simplify
4
(
2
y
5
+
12
5
)
.
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x
=
2
y
5
+
12
5
8
y
5
+
48
5
=
28
−
3
y
Move all terms in
8
y
5
+
48
5
=
28
−
3
y
to the left side and simplify.
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x
=
2
y
5
+
12
5
23
(
y
−
4
)
5
=
0
Solve for
y
in the second equation.
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x
=
2
y
5
+
12
5
y
=
4
Replace all occurrences of
y
in
x
=
2
y
5
+
12
5
with
4
.
x
=
2
(
4
)
5
+
12
5
y
=
4
Simplify
2
(
4
)
5
+
12
5
.
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x
=
4
y
=
4
The solution to the system of equations can be represented as a point.
(
4
,
4
)
The result can be shown in multiple forms.
Point Form:
(
4
,
4
)
Equation Form:
x
=
4
,
y
=
4
Step-by-step explanation:
Answer:
A) 4x+12y
B) 2(2x+6y) is one way to do it
Step-by-step explanation:
1+1+2 is 4 and 12y cannot be added to anything.
2 x 2 is 2 ans 6 x 2 is 12
