Answer:
for #7, i think the degrees are both 56
Step-by-step explanation:
another good way to check is slader.com
you enter you math book and it has an explanation with the answer
The answer is f(2y) = 8y^2 - 8
In order to find this, we need to put 2y in where x was in the original equation. From there, we follow the order of operations to simplify.
f(x) = 2x^2 - 8
f(2y) = 2(2y)^2 - 8
f(2y) = 2(4y^2) - 8
f(2y) = 8y^2 - 8
Answer:
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Step-by-step explanation:
When using the Elimination method, you eradicate one pair of variables so they are set to zero. It does not matter which pair is selected:
{2x - 3y = 9
{⅖[−5x - 3y = 30]
------------------------------------------------------------------------------------------
{x - 2y = 10
{⅔[x + 3y = 5]
_______________________________________________
{y = −3x + 5
{−⅜[y = −8x + 25]
------------------------------------------------------------------------------------------
{y = −x + 1
{¼[y = 4x - 14]
_______________________________________________
I am joyous to assist you at any time.
Answer:
2275
Step-by-step explanation:
list price * discount rate = discount
3500 *35% = discount
Change to decimal form
3500 *.35 =1225
list price - discount = sale price
3500-1225 =2275
He will spend 2275
Answer:
X = 1
Step-by-step explanation:
To solve the system of equation by susbtitution:
3x + y = 9
y = –4x + 10
We can follow the steps thus:
<em />
<em>Substitute the value of y in the first equation:</em>
As in the second equation y = -4x + 10 we can substitute in the first equation as follows:
3x + y = 9
3x + -4x + 10 = 9
<em>Combine like terms: </em>
3x + -4x + 10 = 9
Like therms are the therms with X (3x - 4x = -1x):
-1x + 10 = 9
<em>Apply the subtraction property of equality: </em>
-1x + 10 = 9
As 10 is suming, it passes to subtracting the 9:
-1x = 9 - 10
-1x = -1
<em>Apply the division property of equality:</em>
-1x = -1
Dividing in -1:
x = -1 / -1
<h3>X = 1</h3>
