Answer: a) 10
Step-by-step explanation:
Buscando en google, encuentro que la expresión es:
C(x) = 9*x^2 - 80*x - 100
Queremos encontrar el valor de x (positivo), tal que esa expresión sea igual a cero, entonces tenemos que resolver:
9*x^2 - 80*x - 100 = 0.
Para ello podemos recordar la ecuación de Bhaskara, que para una ecuación de la forma:
a*x^2 + b*x + c = 0
Las soluciones son:
[tex]x = \frac{-b +-\sqrt{b^2 - 4*a*c} }{2a}[/tex]
en este caso, tenemos:
a = 9
b = -80
c = -100
Entoces, las soluciones van a ser:
[tex]x = \frac{-(-80) +- \sqrt{(-80)^2 - 4*9*(-100)} }{2*9} = \frac{80 +- 100}{18}[/tex]
Entonces las dos soluciones son:
x = (80 - 100)/18 = -20/18 = -10/9
Esta solución la descartamos, pues es negativa. La otra solución es:
x = (80 + 100)/18 = 180/18 = 10
La opción correcta es a: 10
HELP IMMEDIATELY!!
Type the correct answer in the box. Use numerals instead of words.
The graphs of functions f and g are shown.
Function g is defined as . What is the value of c?
The value of c is __.
Answer:
The value of c is 3
Step-by-step explanation:
Here, we want to get the value of c
From the question, we can select a single x-point
when x = 16
f(x) = 2
g(x) = -1
Thus;
g(16) = f(16) - c
-1 = 2 - c
c = 2 + 1
c = 3
Answer:
- 3
(got it right on edmentum)
but for your assurance so you can get this question right please make sure to look at the picture below↓
HELP WILL GIVE BRAINLIEST AND 30 POINTS!!
Students went on a field trip. The destination was 7 miles away. In the first hour, the students walked three tenths of the distance. How far did they walk in the first hour?
ANSWER IS 2.1 miles PLEASE SHOW ALL WORK
The price of a video game was reduced from $60 to $45. By what percentage was the price of the video game reduced?
A.15%
B.25%
C.75%
D.40%
is it A?
im just not really good at math and I don't have much time left for the test im taking so PLEASE HELP!
Answer:
B. 25%
Step-by-step explanation:
You turn the 25% into a decimal so it would be .25 then you multiply by 60. After that you subtract the answer you have by 60.
brainliest answer to whoever verifies this correctly!!
Answer:
that looks right
Step-by-step explanation:
What is 3/4 divided 5/16 in its simplest form?
Step-by-step explanation:
3/4÷5/16
3/4×16/5
=12/5(2 2/5)
(3/4) divided by (5/16) in its simplest form is 12/5.
To divide two fractions, you can multiply the first fraction by the reciprocal of the second fraction. The reciprocal of a fraction is obtained by flipping the numerator and the denominator. So, to divide (3/4) by (5/16), you can multiply (3/4) by the reciprocal of (5/16):
(3/4) ÷ (5/16) = (3/4) * (16/5)
Now, multiply the numerators and denominators:
Numerator: 3 * 16 = 48
Denominator: 4 * 5 = 20
3/4) ÷ (5/16) = 48/20
To simplify this fraction, find the greatest common divisor (GCD) of the numerator and the denominator, and then divide both by the GCD:
GCD of 48 and 20 is 4.
(48/4) ÷ (20/4) = 12/5.
To know more about simplest form:
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Someone, please help me with this problem, please
someone do this plz ill pay u when im rich
Answer:
11307.19 rounded and exact is 11307.1875
Step-by-step explanation:
Answer:
Use a calculator but your answer is 11307.1875
Step-by-step explanation:
0.242296875 is what you get when the brackets are solved now multiply and divide.
848.039062 is what you get when multiplied and 11307.1875 is what you get when you divide.
What is the answer for A B and X (geometry)
Answer:
a=8
b=5
x=13
Step-by-step explanation:
Use Pythagoras's Theorem to find A
h²=y²+z²
10²=a²+6²
100=a²+36
∴a²=64
∴a=8
Use Pythagoras's Theorem to find A
h²=y²+z²
9²=b²+6²
81=b²+36
∴b²=45
∴b=3√5
x=a+b
=8+3√5
Answer:
a = 8
b = ∛5
x = 8 + ∛5
Step-by-step explanation:
I think here we have to do pythagorean theorem a² + b² = c² or c =√a² + b²
Now just plug in the numbers for 9, 6 and b
6² + b² = 9²
36 + b² = 81
b² = 45
b = 6.70820....
b = ∛5
∛5 = 6.70820..
Now plug in 6, 10, a
a² + 6² = 10²
a² + 36 = 100 (subtract 36 on both sides)
a² = 64
√64 = 8
a = 8
NOW X
8 + √45 = 14.708203
8 + ∛5 = 14.708203
x = 8 + ∛5
Hope this helps ya!!!
[
1
Solve the equation.
y + 3 = y + 9
f
O y= 1
O y = 3
O y = 6
O y = 9
Complete the steps to find the value of x.
2xº
1282
PLZ HELP! WILL MARK BRAINLIEST!! The graphs of linear functions f and g are shown on the graph. Which function is best represented by the graph of g?
A. g(x) =f(x)-4
B. g(x) = 1/3 f(x)
C. g(x) = f(x)-2
D. g(x)=3f(x)
Answer:
B
Step-by-step explanation:
f(x)=x (slope is 1, y-intercept is zero)
g(x) = (1/3)x (slope is (1/3), y-intercept is zero)
(1/3)x = (1/3)f(x)
Answer:
B
Step-by-step explanation:
as u notice the slop of f function is higher than g function so g(x) is approximately one third of function f and there are no shifts in g(×) so no need for sum of subtract .
What is 2x+8x=6? Please answer accurately???
Answer:
x = 3/5
Step-by-step explanation:
2x + 8x = 6
10x = 6
x = 3/5
Leila and Jo are two of the partners in a business. Leila makes $3 in profits for every $4 that Jo makes. If Jo makes $60 profit on the first item they sell, how much profit does Leila make? pls help U_O
Answer:
54
Step-by-step explanation:
hi
Kain graphs the hyperbola (y+2)^2/64 − (x+5)^2/36 = 1 . How does he proceed? Drag a value, phrase, equation, or coordinates in the boxes to correctly complete the statements.
I just took the test
1st Box. (-5,-2)
2nd Box. up and down
3rd Box. 8
4th Box. (-5, 6), (-5,-10)
5th Box. 4/3
6th Box. y+2=+/-4/3(x+5)
Answer:
1st Box. (-5,-2)
2nd Box. up and down
3rd Box. 8
4th Box. (-5, 6), (-5,-10)
5th Box. 4/3
6th Box. y+2=+/-4/3(x+5)
are the correct choices. Here are screenshots for your convenience.
Step-by-step explanation:
The owner of a pet store sells 5 goldfish for $9 . What is the cost in dollars for one goldfish
Answer:
The answer is C.
Step-by-step explanation:
Took the lesson on edge 2021
3
V = 63 cm
Can someone please help with this?
Answer:
v=21cm
Step-by-step explanation:
v= 63/3
v= 21cm
You buy 2.6 pounds of grapes for $1.40 per pound. You hand the cashier a $5 bill. How much change will you receive?
If your breakfast costs $12 and you are
charged 9% sales tax, what is the total
cost of your meal?
Answer:
find 9% of 12
12 times 9 divided by 100
108/100
$1.08
12+1.08
Your mean costs $13.08
-Have a nice meal!
Anna wants to bake 2 1/2 dozen cookies for a party. However, the recipe she has only makes a dozen cookies. If the original recipe calls for 1 1/4 cups of sugar, how many cups of sugar does she need to make the cookies for her party? Express your answer as a mixed number.
Given :
Sugar required for 2 1/2 = 5/2 dozen of cookies is 1 1/4 = 5/4 cups.
To Find :
How many cups of sugar does she need to make the cookies for her party.
Solution :
Let, cups of sugar required to make cookies for her party is x.
So,
[tex]x = \dfrac{\dfrac{5}{4}}{\dfrac{5}{2}}\\\\\\x = \dfrac{1}{2}[/tex]
Therefore, 1/2 cup of cookies is required to make 1 dozen cookies.
Hence, this is the required solution.
Answer: 25/8
Step-by-step explanation:
We would first turn 2 1/2 and 1 1/4 into an improper fraction.
That leaves us with 5/2 and 5/4.
Then, because she needs to make 5/2 dozen cookies and needs 5/4 cups of sugar for every batch, we would multiply 5/2 and 5/4 together.
Therefore x, or the amount of sugar she needs, is 25/8
I need help fast... if answered Correctly I will mark brainliest
Choose the ordered pair which is the solution to: -2x + 7y = 17 and 3x - 4y = -19.
O (0,17/7)
O (-1,-2)
O (-5,1)
O (-1,3)
9514 1404 393
Answer:
(-5,1)
Step-by-step explanation:
To eliminate x, multiply the first equation by 3 and add 2 times the second equation.
3(-2x +7y) +2(3x -4y) = 3(17) +2(-19)
-6x +21y +6x -8y = 51 -38
13y = 13
y = 1 . . . . . matches the third answer choice
(x, y) = (-5, 1)
1) In a survey, Eric, the team manager, asked all 120 soccer players in the league which drink they preferred during
and after the game.
Drink During Game After Game
Sports Beverage 70
10
Juice
10
80
Water
40
30
Directions: For each statement below, tell if it accurately represents the information from the survey AND
explain how you made each decision. (SHOW YOUR THINKING)
a. During the game, players prefer juice to water by a ratio of 4 to 1.
b. 25% of the players prefer water after the game.
c. More than half of the players prefer a sports drink during the game.
Help please, thanks :)
Answer:
60°
Step-by-step explanation:
Angle 1 is a vertical angle to 60° by the definition of a vertical angle.
Answer:
∠1 = 60°
Step-by-step explanation:
Brad had 10 crickets in his pet lizard’s cage. After one day, Brad’s lizard has eaten 20% of the crickets he had put in the cage. By the end of the next day, the lizard had eaten 25% of the remaining crickets. how many crickets were left in the cage at the end of the second day?
DO NOT GIVE ME THE ANSWER! Please just tell me how I can find the answer!
Answer:
9x$1.92
Step-by-step explanation:
A line has a slope of Negative three-fourths and passes through the point (–5, 4). Which is the equation of the line?
y = negative three-fourths x + one-fourth
y = negative three-fourths x + 4
y = negative three-fourths x minus 2
y = negative three-fourths x minus one-fourth
The answer is A. y=-3/4x+1/4
The required equation of the line is y = (-3/4)x - 2 which passes through the point (–5, 4). The correct answer would be an option (C).
What is the slope of the line?The slope of a line is defined as the gradient of the line. It is denoted by m
Slope m = (y₂ - y₁)/(x₂ -x₁ )
Let the required equation of the line would be as:
y - y₁ = m(x - x₁)
Since the line passes through the point (–5, 4) and slope m = -3/4
So substitute the values in the above equation, and we
y - (-5) = (-3/4)(x - 4)
y + 5 = (-3/4)x - (-3/4)4
y + 5 = (-3/4)x + 3
y = (-3/4)x + 3 - 5
y = (-3/4)x - 2
Thus, the required equation of the line is y = (-3/4)x - 2.
Learn more about the Slope of the Line here:
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hey there peeps! I usually don't ask for this much help but today I need it so...
3 1/5 x5/8
Answer:2
Step-by-step explanation: follow pemdas
write any algebraic eqaution.
Answer:
(y4x2 + 2xy – y)/(x – 1) = 12
Step-by-step explanation:
Answer:
x3 + 1
Step-by-step explanation:
Please walk me through how to solve this. I've already graphed it, just need to know how to solve. Thanks!
Graph ABCD with B(0,6), C(2,-5), and D(-8, -1),
then order the angle measures from least to
greatest.
Answer:
Get a protractor
Step-by-step explanation:
You should have a protractor if you're doing this type of work. Measure the angles with it, and than order them from least to greatest. If you dont have a protractor, ask your parents to get you one ASAP
‼️Help please‼️
A tank full of water is leaking at a constant rate for 30 minutes. The equation y= -7x + 300 gives the amount of water in the tank, where y is the number of liters and x is the number of minutes since the tank began to leak. Which statement is true?
Answer: A
The answer should be A. you probably answered the questoion alr so sorry if you got it wrong
Step-by-step explanation:
it should be A because its not C and D, and B doesnt make sense because it never mentioned anything about 20 minutes.
A crew of highway workers paved 1/3 mile in 1/4 hour. If they work at the same rate, how much will they pave in one hour?
Answer:
1 and 1/3 of a mile
Step-by-step explanation:
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