Answer:
17 dimes and 21 nickels.
Step-by-step explanation:
Answer:
<h2>The easiest to solve for is x in the first equation</h2>
Step-by-step explanation:
Given the system of equation, x + 4 y = 14. and 3 x + 2 y = 12, to solve for x, we can use the elimination method of solving simultaneous equation. We need to get y first.
x + 4 y = 14............ 1 * 3
3 x + 2 y = 12 ............ 2 * 1
Lets eliminate x first. Multiply equation 1 by 3 and subtract from equation 2.
3x + 12 y = 42.
3 x + 2 y = 12
Taking the diffrence;
12-2y =42 - 12
10y = 30
y = 3
From equation 1, x = 14-4y
x = 14-4(3)
x = 14-12
x = 2
It can be seen that the easiest way to get the value of x is by using the first equation and we are able to do the substitute easily <u>because the variable x has no coefficient in equation 1 compare to equation 2 </u>as such it will be easier to make the substitute for x in the first equation.
Answer:
a triangle using 3 sides and 3m angle measure
<span>This problem can be easily
solved using algebra.<span>
Since
James wants to know how many months he will have $810, we need to simplify it in an equation.</span></span>
Let x = number of months
$360 + $90x = $810
We transfer $360 to the other
side and reverse operation
$90x = $810 - $360
Now it is simplified to this
$90x = $450
n order to find the value of
x, we divide 90 to both sides
$90x/90 = $450/90
…and arrive at the answer.
X = 5
<span>Therefore, it will take 5
months for James to save in order to get $810 in his bank account.</span>
Answer:
The positive integers are 8 and 4
Step-by-step explanation:
Let the bigger integer be x, and the smaller be y, then
The difference of their reciprocals is 1/8.
Multiply through the second equation by 8xy
Substitute the first equation into this last equation:
or
But y≠0, since division by zero is not defined.
Therefore y=4 and x=8
