A quadratic equation has the general formula expressed as:<span>
ax^2 + bx - c = 0
This equation can be solved by the quadratic formula which is expressed as:
x = ( -b (+ or -) √(b^2 - 4ac) / 2a
From the given equation,
a = 9
b = -54
c = -19
x = ( -(-54) (+ or -) √((-54)^2 - 4(9)(-19)) / 2(9)
x1 = 19/3
<span>x2 = -1/3</span></span>
Answer:
30
Step-by-step explanation:
The value of y in rectangle QRST is 1
Step-by-step explanation:
A Rectangle is a quadrilateral with opposite sides equal and parallels among several of its other features. Its other features include opposite ends meet at right angle and diagonals are equal
In the given data the sides are "11y+9" "19y+28" and "20y"
Since for rectangle opposite sides are equal
hence 11y+9 must be equal to 20y
11y+9=20y -- equation 1
rearranging the equation we get,
9y=9 (transferring 11y to the right side of the equation)
Therefore y=1
Hence y=1 in the given rectangle QRST
724,804 rounded to nearest thousands place is 725,000.
Step-by-step explanation:
Given whole number is
724,804
Rounding to the nearest thousand means that we round the last three digits to a thousand number.
If the last three digits are 500 or more than that, then we round the thousands digits up and in case of less than 500, the digits are rounded down to thousand.
Therefore;
last three digits of given number is 804, which is greater than 500, therefore,
724,804 rounded to nearest thousands place is 725,000.
Keywords: digits, thousands
Learn more about digits at:
#LearnwithBrainly
Answer:
32 Pounds
Step-by-step explanation:
If your backpack wieghs 7 pounds less than your friend's backpack, then we will have to see what number you can subtract 7 from to get 25 pounds. What we can also do is add 7 to 25.
The answer is: