Answer:
8/15 or 0.53
Step-by-step explanation:
Please mark brainliest ty :)
Answer:
First, you have to form simultaneous equation for both of their ages in yerms of a and b :
b = 4a - 12 -------- ( 1 )
a + b = 28 -------- ( 2 )
Next, you will have to solve it by substituting ( 1 ) into ( 2 ) :
a + (4a - 12) = 28
5a - 12 = 28
5a = 28 + 12
5a = 40
a = 8
Then, substitute a = 8 into ( 1 ) :
b = 4(8) - 12
b = 32 - 12
b = 20
Answer:
he faked too much
Step-by-step explanation:
<span>2 11/100 you cannot simplify that anymore</span>The first, decimal place is the tenths place and the second is the hundredths place. Since the decimal goes out to two decimal places, the fraction must be over one hundred. To find the numerator, simply look at the value of the decimal, in this case, 11.
<span>That is your final answer, since 11 and 100 have no common factors besides 1, as 11 is a prime number.
</span>
The solution is (2, -4).
We can solve this with the elimination method. Multiply the first equation by -2 and then add the two equations.
-20x + -12y = 8
20x + 10y = 0 Add the two equations
-2y = 8
y = -4
Now, just input -4 for y into either equation, you will get 2 for x.
