Let's solve for x.
x
+
4
y
=
(
14
)
(
3
)
x
+
7
y
Step 1: Add -42x to both sides.
x
+
4
y
+
−
42
x
=
42
x
+
7
y
+
−
42
x
−
41
x
+
4
y
=
7
y
Step 2: Add -4y to both sides.
−
41
x
+
4
y
+
−
4
y
=
7
y
+
−
4
y
−
41
x
=
3
y
Step 3: Divide both sides by -41.
−
41
x
−
41
=
3
y
−
41
x
=
−
3
41
y
Answer:
x
=
−
3
41
y
45 minutes equal to 2700 seconds.
Answer:
See below.
Step-by-step explanation:
Let x equal each of the values on the table, and find the value of the function for that value of x.
f(x) = 5x - 5
x = -4
f(-4) = 5(-4) - 5
f(-4) = -20 - 5
f(-4) = -25
x = 0
f(0) = 5(0) - 5
f(0) = 0 - 5
f(0) = -5
x = 1
f(1) = 5(1) - 5
f(1) = 5 - 5
f(1) = 0
x = 3
f(3) = 5(3) - 5
f(3) = 15 - 5
f(3) = 10
x = 5
f(5) = 5(5) - 5
f(5) = 25 - 5
f(5) = 20
x f(x)
-4 -25
0 5
1 0
3 10
5 20
This statement is true.
Examples:
5.5/-1.1= -5
3.6/-1.2= -3
If dividing by a negative decimal, the sign of the answer will be opposite to the dividend.
When dividing by a positive, the sign of the answer will be the same as the dividend.
