This can be written as:
a+27=4(15-a)
now to work it out
a+27=4(15-a)
a+27=60-4a
4a+27=60
4a=33
a=8.25
<span>hope this helps :)</span>
20. Coefficients are always the number. The letters are variables
Answer:
The values of x are x= 2i and x= -2i
Step-by-step explanation:
We need to solve the equation:
2x^2 + 8 =0
Taking 2 common
2(x^2 +4) =0
Dividing both sides by 2
x^2+4 =0
Adding -4 on both sides
x^2 +4 -4 = 0-4
x^2 = -4
Taking square root on both sides we get
√x^2 = √-4
we know √4 = 2 and √-1 = i so answer is:
x = ± 2i
The values of x are x= 2i and x= -2i
The graph is shown in figure attached.
Answer: 6.5
<u>Step-by-step explanation:</u>

Cross multiply: 118(z) = 13(59)
z = 
= 6.5
Based on the given details above, here are the answers to your question.
If x represents the number of quarters in the jar, the equation that can be used to find the number of quarters is this <span>0.25x + 0.05(150 x) = 28.30.
Then, for the how many quarters and how many nickels are there, the answer is </span><span> 46 quarters; 104 nickels. Hope this answer helps. </span>