X=-2 and y=3.
The first step we take is to substitute the value for y from the second equation into the first equation:
4x+5(3x+9)=7
This is justified by substitution. The next step is:
4x+5*3x+5*9=7
4x+15x+45=7
This is justified by the distributive property. The next step is:
19x+45=7
This is justified by addition of like terms. The next step is:
19x+45-45=7-45
19x=-38
This is justified by the subtraction property of equality. The next step is:
19x/19 = -38/19
x=-2
This is justified by the division property of equality. The next step is:
y=3(-2)+9
y=-6+9
y=3
This is justified by substitution, multiplication and addition, in that order.
Answer:
x =(3-√37)/2=-1.541
x =(3+√37)/2= 4.541
Step-by-step explanation:
to long to explain sorry but trust me
Standard form of the polynomial is 
.
Degree of the polynomial is 7.
Solution:
Given polynomial:
<u>To write this polynomial in standard form:</u>
Standard form of the polynomial is writing x from highest power to lowest power.
Therefore, standard form of the polynomial is
<u>Degree of the polynomial:</u>
The highest power of x in the polynomial is the degree of the polynomial.
Here, the highest power is 7.
Hence the degree of the polynomial is 7.
Answer:
30%
Step-by-step explanation:
1/5 = 20%
so, 50 - 20 = 30
