Answer:
3 and - 4
Step-by-step explanation:
Let
The first number be "x", and
The second number be "y"
The sum of the 2 numbers is -1, so we can write:
x + y = -1
or
x = -1 - y
Twice the first and 4 times second SUMMED, gives us -10, so we can write:
2x + 4y = -10
Now, we put 1st equation in 2nd and find y first:
Now, finding x:
x = -1 - y
x = -1 -(-4)
x = -1 + 4
x = 3
So, the two number are:
3 and - 4
<span>100 textbooks increased by 99%
Do this:
First, make 99% a decimal, to do this, you must divide 99 by 100
you get 0.99
multiply 0.99 by 100
you get 99
then, add 99 to 100 and you get 199
so the total sum is 199!!
Hope this helped!
</span>
Answer:
the theater needs to sell at least 100 tickets
Step-by-step explanation:
wants to make at least $1000 and they already have $50, so you take the $9.50 per ticket and add that to the $50.
$1000=$9.50t+$50
1000/50=9.5t
950=9.5t
950/9.5=t
t=100
Answer:
Each side is 35.78 mm
Step-by-step explanation:
A square would have 4 equal sides. Since area of a square is x^2, where x is one side, we can write:
x^2 = 1280
x = 35.78 mm
Each side is 35.78 mm
