Erica earned 30,000 bonus points this week which is ten times more than she earned last week. Therefore, she must have earned 3,000 bonus points last week.
The question tells us that Erica earned 30,000 bonus points this week and that this is ten times as many points as she earned last week. In terms of mathematics, this forms an equation where the number of bonus points Erica earned last week multiplied by ten equals the points she earned this week. You can figure out how many points Erica made last week by dividing 30,000 by 10. So, Erica earned 3,000 bonus points last week.
#SPJ2
A quadratic equation is a second-order polynomial equation in a single variable x
The value of x for the quadraticequation x² - 9x + 3 is
x = (9 + √69) / 2
or
x = (9 - √69) / 2
A quadratic equation is a second-order polynomial equation in a single variable x as:
ax² + bx + c = 0. with a ≠ 0.
We have,
x² - 9x + 3 = 0
We will use the determinant formula to find the value of x.
The formula is given by:
x = [-b ± √(b² - 4ac)] / 2a
We have,
x² - 9x + 3 = 0
It is in the form of ax² + bx + c = 0
a = 1, b = -9 and x = 3
Now putting a, b, and c values in the formula we get,
x = [- (-9) ± √ ( (-9)² - 4 x 1 x 3 )] / 2 x 1
x = [ 9 ± √ (81 - 12) ] / 2
x = (9 ± √69) / 2
x = (9 + √69) / 2 or (9 - √69) / 2
Thus the value of x for the quadratic equation x² - 9x + 3 is
x = (9 + √69) / 2
or
x = (9 - √69) / 2
Learn more about quadraticequations here:
#SPJ2
A, 32 DAYS C, 96 DAYS
B,64 DAYS D, 63 1/2 DAYS
Answer:
800 yards
Step-by-step explanation:
80 x 4 + 12 x 4 = 800
Hope this helps!
19200! hope this helps! good luck
Answer:
The Third diagram because a function is the set of the form: (x, y) where x in the Domain and y = f(x) in the codomain meaning x can't be mapped to 2 values.
Answer:
Option A - 5 grams
Step-by-step explanation:
9 balls in one side
= 5 balls other side with 20 gram
5 + 4 balls one side
= 5 + 20 grams other side
5 + 4 balls
= 5 balls + 20/4
5 gm of I ball weight 9 * 5 = 45
5 * 5 + 20
= 45
Answer:
b = 5 grams
Step-by-step explanation:
Let b represent the weight of one ball.
Then 9b = 20 grams + 5b.
Solving for b, subtract 5b from both sides, obtaining 4b = 20 grams.
Then b = the weight of one steel ball = 5 grams.
Check: Does 9(5 grams) = 20 grams + 5(5 grams)?
Does 45 grams = 45 grams? YES