Answer:
65/2
Step-by-step explanation:
3 1/4= 13/4
13/4(10)=65/2
Answer:
The bacterium expels oxygen, making room for
hydrogen peroxide and carbon dioxide. These elements are then combined with solar energy to produce fuel.
Step-by-step explanation:
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Answer:
The perimeter of both figures is equal to 
Step-by-step explanation:
step 1
we know that
The perimeter of a square is equal to
where
b is the side length of the square
we have
substitute
step 2
we know that
The perimeter of a rectangle is equal to
we have
substitute
step 3
Equate both perimeters and solve for x
step 4
Find the perimeter of both
<em>square</em>
<em>rectangle</em>
Substitution method
y = x + 3 (*)
y = 3x + 1 (**)
Substitute (*) to (**):
3x + 1 = x + 3 <em>subtract 1 from both sides</em>
3x = x + 2 <em>subtract x from both sides</em>
2x = 2 <em>divide both sides by 2</em>
<h3>x = 1</h3>
Put the value of x to (*):
y = 1 + 3
<h3>y = 4</h3><h3>Answer: x = 1 and y = 4 → (1, 4).</h3>
Answer:
x=-2,y=-4
Step-by-step explanation:
By dividing to lowest terms
5x – 5y = 10= x-y=2.......(1)
6x – 4y = 4=3x-2y=2........(2)
By elimination method
Multiply equation (1) by 3 so as to correspond with equation (2)
3(x-y)=3(2)
3x-3y=6..........(3)
Multiply equation (2) by 1 so as to correspond with equation (1)
1(3x-2y)=1(2)
3x-2y=2..........(4)
Then equation (3)-equation (4)
(3x-3y=6)
-
(3x-2y=2)
__________
-y=4
y=-4
Substitute y=-4 into equation(1)
x-(-4)=2
x+4=2
x=-2
Therefore x=-2,y=-4
