<u>ANSWER </u>
and
<u>EXPLANATION</u>
Given;
and
The augmented matrix of the two linear equation is given by;
We now perform row operations;
.
This gives us
Hence and
X/0.4 = 10x/4
21/9÷31/6 = 21•6/31•9
so solving the equation gives
X=84/465
Answer:
Leo is 1 year old.
Step-by-step explanation:
Given:
Lily's age = 5
Leo's age =
we need to find the Leo's age.
Solution:
Leo's age =
where x ⇒ Lilly age
But Lilly's age = 5 years (given)
So we will substitute the value of x as 2 in Leo's age expression.
On Substituting we get;
Leo's age =
Hence Leo is 1 year old.
Answer:If Mary spent half of her allowance the equation will begin with 1/2x or 0.5x where x is her allowance and 0.5 is half of her allowance spent. Mary also earned 7 dollars by washing the car so this will be added to her allowance spent.
The problem says that after Mary has spent half of her allowance at the movies she was left with 18 dollars so that means that the equation must be equal to 18.
The equation you want to set up is
0.5x+7=18
Where, 18-7=11
0.5x=11
11/.5 = x
x = $22
Thus, Mary has a weekly allowance of 22 dollars.
Step-by-step explanation:
9514 1404 393
Answer:
domain: {3, 5, 7, 11, 13, 15}
range: {-18, -2, 0, 8, 14}
yes, it is a function
Step-by-step explanation:
The domain is the list of numbers in the x column: {3, 5, 7, 11, 13, 15}.
The range is the list of numbers in the y column. Usually duplicates are removed. It is often useful to order the numbers, but is not strictly necessary. The range is {-18, -2, 0, 8, 14}.
No x-value is repeated, so the relation IS A FUNCTION.