Answer:
3/10 = x or 0.3 = x
Step-by-step explanation:
2.1 / x + 1 4/5 = 3 / 10x
<em>1. first cross multiply and solve it normally:</em>
3 (x + 1 4/5) = (2.1) 10x
3x + 5 2/5 = 21x
-3x -3x
5 2/5 = 18x
3/10 = x or 0.3 = x
these questions are kind annoying to solve because of the fractions, so if you can, use a calculator to solve them! its much easier!
hope this helps!
Answer: The answer is x=0
Step-by-step explanation:
Rewrite the equation as a trinomial.
x
2
+
12
x
+
0
Move 0 to the right-hand side.
x
2
+
12
x
=
0
Divide the coefficient of the x
-term by 2, then square the result. Add the result to both sides.
12
/2
=
6
;6^2
=
36
x
2
+
12
x
+
36
=
36
Factor the perfect square trinomial
x
2
+
12
x
+
36
on the left-hand side.
(
x
+
6
)
2
=
36
Take the square root of both sides and solve for x
.
√
(
x
+
6
)^
2
=
±
√
36
=
x+
6
= ±
6
x
= −
6
+
6
=
0
x
= −
6 −
6
=
−
12
Check
If x
=
0
:
(
0
)
^2
+
12
(
0
)
=
0
0
=
0
If x
=
−
12
:
(
−
12
)
^2
+
12
(
−
12
)
=
0
144
−
144
=
0
0
=
0
Answer:
6,200 divided by 4 = 1500
Step-by-step explanation:
The constant number or term here is 7<span />
<span>The equation would be y=(2/5)x+50.
Explanation:
Slope-intercept form is given by y=mx+b, where m is the slope and b is the y-intercept. The original $50 donated has nothing to do with the profits; if the profits are $0, they will still donate $50. This is the y-intercept, b.
Since they are donating 2/5 of their profits x, this means that the rate of change, or slope, of the line will be 2/5 of a dollar donated per dollar profit; this is m. Plugging these in gives us the equation above.</span>