Joline is solving the equation 0 = x2 – 5x – 4 using the quadratic formula. Which value is the negative real number solution to her quadratic equation? Round to the nearest tenth if necessary.
Answers
x1 = [-b + √(b²-4ac)] / 2a]
x2 = [-b - √(b²-4ac)] / 2a]
These formulas are used to solve for the values of the roots of the equation given. From the equation,
a = 1
b = -5
c = -4
Substituting the values, we have:
x1 = 5.70
x2 = -0.70
Therefore, the negative real number is -0.70.
The value -0.07 is the negative real number in the quadratic equation 0 = x² – 5x – 4
What is a quadratic equation ?
Any equation of the form where x is variable and a, b, and c are any real numbers where a ≠ 0 is called a quadratic equation.
As we know, the formula for the roots of the quadratic equation is given by:
We have a quadratic equation;
0 = x² – 5x – 4 or
x² – 5x – 4 = 0
Here a = 1, b = -5, and c = -4
After simplification:
x = 5.70 or x = -0.70
The value x = -0.70 is the negative real number.
Thus, the value -0.07 is the negative real number in the quadratic equation 0 = x² – 5x – 4
Learn more about quadratic equations here:
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In triangle NQL, point S is the centroid, NS = (x + 10) feet, and SR = (x + 3) feet. Triangle N Q L has centroid S. Lines are drawn from each point to the midpoint of the opposite side to form line segments N R, Q M, and L P. The length of line segment N S is x + 10 and the length of line segment S R is x + 3.What is RS?4 feet7 feet10 feet14 feet
Claire wants to find the mass of her suitcase. Which unit of measure would be best for her to use?A. TonsB. LitersC. MetersD. Kilograms
Will give Brainliest if u help me solve this problem
Answers
Answer: -1 < x < 1
Answers
-- Measure the length of the box.
-- Measure the width of the box.
-- Measure the height of the box.
-- Make sure all 3 measurements are in the same units.
-- Multiply (length) x (width).
-- Take that answer and multiply it by (height).
-- You now have the volume of the box.
Which relation is a function?
Answers
Answer:
The one on the bottom right corner
Step-by-step explanation:
The vertical line test would be used to find out if it's a function or not. In 3 out of the four graphs, it crosses the vertical line twice, unlike the bottom right option.
Answer: Choice D in the bottom right corner
Reason
If it is ever possible to pass a single vertical line through more than one point on the curve, then that curve fails the vertical line test. Furthermore, it would mean that curve isn't a function.
This happens with choices A, B, and C. In other words, the top row and the graph in the bottom left corner. Any vertical line will fail the vertical line test.
Choice D, in the bottom right corner, passes the vertical line test. It is impossible to draw a vertical line through more than one point on the curve. Any x input in the domain leads to exactly one output in the range. Therefore, choice D is a function.
Answers
79 % = 79/100 = 0.79
So 0.79 * 76 000 = 60 040
Answers
Answer:
11,180
Step-by-step explanation:
The usual assumption for organic growth is that it is exponential. Here, the number increased by a factor of 1000/200 = 5 in 8 hours. For t in hours, a model for population might be ...
b = (initial value)·(growth factor)^(t/(period of growth))
b = 200(5^(t/8))
Using t = 20, the predicted population is ...
b = 200(5^(20/8)) = 200·5^2.5 ≈ 11,180
There might be about 11,180 bacteria in 20 hours.
Time elapsed between start of Car 1 and start of Car 2 = 18 minutes.
How long before Car 2 overtakes Car 1?
A. 0.68
B. 0.53
C. 0.58
Answers
how long before car2overtakes car1,
since car2 is faster than car1, we assume that car1 left first
it left 18 minutes first
find how much distance that is
45 times hours=distance
60minsperhour
45 times 18/45=distance=13.5
headstart of 13.5miles
so
their distances are reprsetned by
45h+13.5=car1distance at h hours AFTER 18 minutes
65h=car2 disstance at h hours AFTER 18 minutes
when will distance be same?
set equal to each other
45h+13.5=65h
minus 45h both sides
13.5=20h
divide oth side by 20
0.675=h
0.675 hours
we round
0.68
answer is 0.68 hours
(note again, if you want to delete my answer or see something wrong with this answer, tell me what it is so I can improve and learn (or maybe I can show you where you are wrong))
A is answer