the price of one apple after solving the simultaneous equations is $1.45.
Let's denote the price of one apple by "a" and the price of one banana by "b". We can then set up a system of two equations to represent the given information:
4a + 9b = 12.70 (equation 1)
8a + 11b = 17.70 (equation 2)
To solve for the price of one apple, we want to isolate "a" in one of the equations. One way to do this is to multiply equation 1 by 8 and equation 2 by -4, which will allow us to eliminate "b" when we add the two equations together:
(8)(4a + 9b) = (8)(12.70) --> 32a + 72b = 101.60 (equation 3)
(-4)(8a + 11b) = (-4)(17.70) --> -32a - 44b = -70.80 (equation 4)
Adding equations 3 and 4 gives:
28b = 30.80
Solving for "b" yields:
b = 1.10
Substituting this value of "b" into equation 1 gives:
4a + 9(1.10) = 12.70
Solving for "a" yields:
a = 1.45
Therefore, the price of one apple is $1.45.
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what is the slope of the line that passes through the point (-1,-10) and (-1,-2). answer needs to be in simplest form
Answer: m = undefined
Step-by-step explanation:
-2-(-10) = 8
-1-(-1) = 0
m = 8/0
Which is an undefined slope
Answer:
The slope is undefined
Step-by-step explanation:
Plug in the points to the formula for slope (Formula Found Below). You would get (-2 + 10)/(-1 + 1), which simplifies to 8/0. Anything divided by 0 is undefined, which means that the slope is undefined.
Furthermore, you could also tell this simply by the points given. If two points on a line have the same x - coordinate, it means that the slope is undefined and that the line formed by the points isn't a function.
Formula for Slope:
\(\frac{y1 - y2}{x1 - x2}\)
Usable with 2 points of the line given ((x1, y1) and (x2, y2))
A line includes the points (6,10) and (1,0) What is its equation in slope-intercept form?
Answer:
The slope-intercept is \(y = 2x -2\) .
Step-by-step explanation:
-First, you need to find the slope by using the slope formula:
\(m =\frac{y_{2}-y_{1}}{x_{2}-x_{1}}\)
-Second, use both points (6, 10) and (1, 0) for the formula:
\(m =\frac{0-10}{1-6}\)
-Third, you solve:
\(m =\frac{0-10}{1-6}\)
\(m = 2\)
-Fourth, after you found the slope, you need to use the Point-slope form equation:
\(y - y_{1} = m (x -x_{1})\) (where \(m\) represents the slope, and \((x_{1},y_{1})\) represents the first coordinate or the first point).
-Fifth, use the slope 2 and the first point (6, 10) for the Point-slope form equation:
\(y - 10= 2 (x -6)\)
-Sixth, you solve the equation to get the slope-intercept form:
\(y - 10= 2 (x -6)\)
\(y -10 = 2x -12\)
\(y -10 +10 = 2x -12 +10\)
\(y = 2x -2\)
So, therefore, the slope-intercept is \(y = 2x -2\) .
Find all the Missing Angles
Answer:
need more information
select all that apply, 7th grade math
Hi!
Your answer to this question would be every option except for 0.
This is because the question is saying: x is less than or equal to negative 3.
Thus, you answer, all options except 0
Have a wonderful/night!
God bless!
Please help a girl out:
Answer:
Look at the image.
Step-by-step explanation:
If 12 is 24%, then half of the percent is the actual number.
36% = 18
24% = 12
18% = 9
22% = 11
18 + 12 + 9 + 11 = 50
18 students would like to learn Spanish.
Consider the function f(x,y,z)=5+yxz+g(x,z) where g is a real-valued differentiable function. Find the directional derivative of f at the point (3,0,3) along the direction of the vector (0,4,0). Enter your answer symbolically, as in these
Given, the function is f(x,y,z)=5+yxz+g(x,z)Here, we need to find the directional derivative of f at the point (3,0,3) along the direction of the vector (0,4,0) . The directional derivative of f at the point (3,0,3) along the direction of the vector (0,4,0) is 0.
Using the formula of the directional derivative, the directional derivative of f at the point (3,0,3) along the direction of the vector (0,4,0) is given by
(f(x,y,z)) = grad(f(x,y,z)).v
where grad(f(x,y,z)) is the gradient of the function f(x,y,z) and v is the direction vector.
∴ grad(f(x,y,z)) = (fx, fy, fz)
= (∂f/∂x, ∂f/∂y, ∂f/∂z)
Hence, fx = ∂f/∂x = 0 + yzg′(x,z)fy
= ∂f/∂y
= xz and
fz = ∂f/∂z = yx + g′(x,z)
We need to evaluate the gradient at the point (3,0,3), then
we have:fx(3,0,3) = yzg′(3,3)fy(3,0,3)
= 3(0) = 0fz(3,0,3)
= 0 + g′(3,3)
= g′(3,3)
Therefore, grad(f(x,y,z))(3,0,3) = (0, 0, g′(3,3))Dv(f(x,y,z))(3,0,3)
= grad(f(x,y,z))(3,0,3)⋅v
where, v = (0,4,0)Thus, Dv(f(x,y,z))(3,0,3) = (0, 0, g′(3,3))⋅(0,4,0) = 0
The directional derivative of f at the point (3,0,3) along the direction of the vector (0,4,0) is 0.
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Simplify √14q times 2√4q
Answer:
\(4\sqrt{14} q^{2}\)
Step-by-step explanation:
Simplify the radical by breaking the radicand up into a product of known factors, assuming positive real numbers.
Select all of the true statements.
A. π is the area of a circle of radius 1
B. π is the area of diameter 1
C. π is the circumfrence of a circle of radius 1
D. π is the circumfrence of a circle of diameter 1
E. π is the constant of proportionality relating the diameter of a circle to its circumfrence
F. π is the constant of proportionality relating the radius of a circle to its area
The statements that are true are:
π is the area of a circle of radius 1.
π is the circumference of a circle of diameter 1.
π is the constant of proportionality relating the diameter of a circle to its circumference.
What is a circle?A circle is a two-dimensional figure with a radius and circumference of 2 x pi x r.
The area of a circle is given as:
We have,
Circumference of a circle = 2πr
Area of a circle = πr²
π is the area of a circle of radius 1.
Area = πr² = π x 1 = π
π is the area of diameter 1.
2r = 1
r = 1/2
Area = πr² = π x 1/4 = π/4
π is the circumference of a circle of radius 1.
Circumference of a circle = 2πr = 2 x π x 1 = 2π.
π is the circumference of a circle of diameter 1.
Circumference of a circle = 2πr = 2 x π x 1/2 = π.
π is the constant of proportionality relating the diameter of a circle to its circumference.
Diameter ∝ Circumference
2r = 2πr
2r = π (2r)
π is the constant of proportionality relating the radius of a circle to its area.
r = (πr)r
Thus,
π is the area of a circle of radius 1 is true.
π is the circumference of a circle of diameter 1 is true.
π is the constant of proportionality relating the diameter of a circle to its circumference is true.
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How do you write 10 more than a number?
The algebraic expression for 10 more than a number is x + 10 or 10 + x.
The x in the expression is called a variable, which can be represented by any letter in the alphabet.
An algebraic expression is a mathematical expression that consists of numbers, variables and operators, and its value can change.
Some basic mathematical operators are +, -, x and /.
The given phrase states that a result can be obtained by adding 10 more to the variable.
The variable x can be replaced by any number.
If x equals 2, then the expression x + 10 has a value of 12.
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55 divided by 11 * 7 x (2 + 14)
560
1) PEMDAS so 2+14=16
2)55/11=5
3)5x7=35
4)35(16)=560
would you use SIN,COS, or TAN? and solve
\(\rm sin\theta = \frac{10}{x} \ , cos \theta = \frac{\sqrt{10^2-x^2}}{x} ,\ \rm tan \theta =\frac{10}{\sqrt{10^2-x^2}}\) are the obtained values.
What is trigonometry?Trigonometry deals with the relationship between the sides and angles of a right-angle triangle.
From ΔABC it is obtained that;
From the pythogorous theorem;
h²=p²+b²
x²=10²+b²
b=√(10²-x²)
h=x
p=10
\(\rm sin \theta =\frac{p}{h} \\\\ sin\theta = \frac{10}{x}\)
\(\rm cos \theta =\frac{b}{h} \\\\ cos \theta = \frac{\sqrt{10^2-x^2}}{x}\)
\(\rm tan \theta = \frac{p}{b} \\\\ tan \theta =\frac{10}{\sqrt{10^2-x^2}}\)
Hence for the given triangle, the sinΘ,cosΘ, and tanΘ value is obtained above.
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the line of best fit for a set of data is y = 0.25 + 12 . the point ( 4 , 15 ) is a point in the data set . what is the residual value when x = 4 ?
a. -3
b. -2
c. 2
d. 3
Answer:
2: C
Step-by-step explanation:
To get the residual value, we have to subtract the predicted value from the real value
The predicted value is the one we get through the line of best fit
In this case, we have this as;
y = 0.25(4) + 12
y = 1 + 12 = 13
The real value as it can be seen is 15
So the difference between the values would be;
15-13 = 2
PLEASE HELP! I WILL MARK BRAINLIEST IF TWO PEOPLE WILL ANSWER!
Answer = 5.5
You just have to add all the numbers together to get the answer
what is the general term of the sequence: 7; 2;-3 ; -8
6(2x²-5) = [?]
X = -3
Answer:
78
Step-by-step explanation:
Since x=-3
6(2×(-3)^2-5)
6(2×9-5)
6(18-5)
6×13=78
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Identify all properties being shown: (5x^3 + 2) + 7x^2 = (7x^2 + 5x^3) + 2
Answer:
No solutions
Step-by-step explanation:
5x^3 + 2 + 7x^2 = 7x^2 + 5x^3 +2
125x + 2 + 49x = 49x + 125x + 2
-125x -125x
2 + 49x = 49x + 2
-2 -49x -49x -2
0 = 0
Hope this helped :)
Siri earns $6 a day for house sitting. She spends $10 to replace a vase she accidentally broke. Alexa has $50 from her birthday and she spends $4 a day on coffee. How many days, d will it take until the girls have the same amount of money?
Answer:
6
Step-by-step explanation:
siri=6x-10
alexa= 50-4x
im making a table which is an easy way to tell or you can guess and check
X S A
--------------------
2 | 2 |42
3 | 8 |38
4 | 14 |34
5 | 20 |30
6 | 26 |26
Aaron has 47 m of fencing to build a three-sided fence around a rectangular plot of land that sits on a riverbank. (The fourth side of the enclosure would be the river.) The area of the land is 266 square meters. List each set of possible dimensions (length and width) of the field.
The possible dimensions (length and width) of the field are:(10 m × 13 m) or (13 m × 10 m) and (11 m × 12 m) or (12 m × 11 m).
Given that Aaron has 47m of fencing to build a three-sided fence around a rectangular plot of land that sits on a riverbank. The fourth side of the enclosure would be the river.
The area of the land is 266 square meters.To find the possible dimensions (length and width) of the field, we can use the given information.The length of fencing required = 47 m.
Since the fence needs to be built on three sides of the rectangular plot, the total length of the sides would be 2l + w = 47.1. When l = 10 and w = 13, we have:
Length of the field, l = 10 m Width of the field, w = 13 mArea of the field = l × w = 10 × 13 = 130 sq. m2. When l = 11 and w = 12,
we have:Length of the field, l = 11 m
Width of the field, w = 12 m
Area of the field = l × w = 11 × 12 = 132 sq. m
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Simplify completely quantity 12 x plus 36 over quantity x squared minus 4 x minus 21 and find the restrictions on the variable.
Therefore, the expression is undefined when the value of x = 7 or x = -3.
What is equation?An equation is a mathematical statement that asserts the equality of two expressions. It typically involves one or more variables and can be written using mathematical symbols such as addition, subtraction, multiplication, division, exponents, and roots. The goal of solving an equation is to find the values of the variables that satisfy the equation.
Here,
To simplify the expression, we first factor the denominator:
x² - 4x - 21 = (x - 7)(x + 3)
Now, we can rewrite the expression as:
(12x + 36) / (x - 7)(x + 3)
We can simplify the numerator by factoring out 12:
12(x + 3) / (x - 7)(x + 3)
The (x + 3) terms cancel out, leaving:
12 / (x - 7)
So the simplified expression is 12 / (x - 7).
The restrictions on the variable come from the fact that the denominator cannot be equal to zero. So we set the denominator equal to zero and solve for x:
(x - 7)(x + 3) = 0
x = 7 or x = -3
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A tanker truck fills the gas station’s reservoir at the rate of 12 1/2 gallons per minute.
If the reservoir was empty and it is now 35 gallons full, how long has the tanker been filling the reservoir?
Answer: 2.8 minutes
Step-by-step explanation:
If it takes 12.5 gallons per minutes to fill the reservoir, then we have to divide 35 and 12.5.
35 ÷ 12.5 = 2.8 minutes
Since it takes 12.5 gallons per minutes to fill the reservoir, it will take 2.8 minutes to fill the reservoir.
hope this helps!
Answer:
A submarine descends at a rate of 2.6 kilometers per hour.
If the ocean floor is 6.24 kilometers below sea level, how long will it take the submarine to descend to the ocean floor?
Round your answer to the nearest tenth. Enter your answer in the box.
answer:
2.4
hours
Step-by-step explanation:
For want of a nail, the shoe was lost,
For want of a shoe, the horse was lost,
For want of a horse, the rider was lost,
For want of a rider, the battle was lost,
For want of a battle, the kingdom was lost,
And all for the want of a horseshoe nail.
From the above poem, we can deduce that the lack of one horseshoe could be either inconsequential or it could indirectly cause the loss of a war. Some systems are quite sensitive to their starting conditions, so a small change may cause a big difference in the outcome.
Keeping the above in mind, look at the following polynomials:
⦁ y = x
⦁ y = x2
⦁ y = x3
Does a slight change in the degree of the polynomials affect their graphs? If yes, show your results graphically, taking values of x as -3, -2, -1, 0, 1, 2 and 3 in every case.
The poem For Want of a Nail is a warning about how small things can have large and unforeseen consequences. The lack of a horseshoe could lead to the loss of a horse, which could result in the loss of a rider, which could lead to the loss of a battle.
This shows that a small change can cause a big difference in the outcome. We can see a similar phenomenon in the world of mathematics, where small changes in a function can lead to significant changes in its behavior. For example, the degree of a polynomial can have a dramatic effect on its graph. Let's consider the function y = x². This is a second-degree polynomial, which means that its graph is a parabola. If we change the degree of this polynomial to 1, then we get the function y = x, which is a straight line. If we change the degree of this polynomial to 3, then we get the function y = x³, which is a cubic curve. If we graph these functions for the values of x from -3 to 3, we can see how the slight change in the degree of the polynomial affects their graphs. The graph of y = x² is a parabola that opens upward. TThe graph of y = x is a straight line that passes through the origin. The graph of y = x³ is a cubic curve that passes through the origin and has two turning points. These graphs show that a small change in the degree of the polynomial can have a significant effect on its graph.For such more question on polynomial
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No links please! And I need this math answer quick
Answer:
2r-3(r+7)-8r=10(r-1)
2r-3r-21-8r=10r-10
-9r-10r=-10+21
-19r=11
-19/11=r
Step-by-step explanation:
Evaluate using spherical coordinates
∫ ∫T ∫ dxdydz
T : 0 ≤ x ≤ 1, 0 ≤ y ≤ √(1 − x^2), √(x^2 + y^2)≤ z ≤ √(2 − (x2 ^+ y^2)).
The final value is (1/3)(√2 - 1).
We can solve this using spherical coordinates where:
ρ is the distance from the origin to the point.
θ is the angle between the x-axis and the projection of the point onto the xy- plane.
φ is the angle between the z-axis and the line segment from the origin to the point.
The limits of integration for ρ, θ, and φ are:
0 ≤ ρ ≤ √2
0 ≤ θ ≤ π/4
arctan(√(1-x²)/y) ≤ φ ≤ arctan(√(2-x²-y²)/z)
We can set up the integral as follows:
∫∫∫T dV = ∫₀^π/4 ∫₀^√(1-x²) ∫√(x²+y²)^(2) √(2-x²-y²)ρ^2sin(φ) dρ dθ dφ
After solving this integral, we get the answer to be (1/3)(√2 - 1).
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The radius of circle F is 19 cm.
What is the length of its diameter?
Radius of Circle F is 19 cm. What is the diameter?
We know that,
r = 19 cm
d = 2r (Since diameter is equal to double of the radius) = 19 * 2 = 38 cm
So option d) 38 cm is the correct option.
sfdshjkjresahjklkuyresdcvbhjiuyr
Answer:
Zero slope is the answer
1. A shuttle service charges each customer $10.00 for a ride from the airport to the hotel. It costs $45.00 each time the shuttle driver must fill up the gas tank. The shuttle company wants to make a profit of at least $6,000.00. (1) Designate variables for any unknown values. (2) Write an appropriate constraint to represent this scenario.
Step-by-step explanation:
Let's say x = number of customers, and y = number of tanks of gas.
The revenue is 10x.
The cost is 45y.
The profit is the revenue minus the cost. We want the profit to be at least $6000.
10x − 45y ≥ 6000
The following table represents a proportional relation. Find the missing values:
x 0 1 2 3 4
y
13.2
Answer:16288.xy
Step-by-step explanation:
(a) Attendance at the Accra Sports Stadium was alysed by the General Secretary, Prosper Harrison Addo. The analysis demonstrated that spectators consisted of 70% males. If seven people are randomly selected from the spectators during a football match, What is the probability that 4 of them are males? (3 marks) i 11. Find the probability that at most 5 of them are females (4 marks)
a) The probability of randomly selecting 4 males out of 7 spectators, given that 70% of the spectators are males, can be calculated using the binomial probability formula.
b) To find the probability that at most 5 of the randomly selected spectators are females, we need to calculate the cumulative probability of selecting 0, 1, 2, 3, 4, and 5 females from the total number of selected spectators.
a) To calculate the probability of selecting 4 males out of 7 spectators, we can use the binomial probability formula:
P(X = k) = C(n, k) * p^k * (1 - p)^(n - k)
Where:
- n is the total number of trials (number of people selected)
- k is the number of successful trials (number of males selected)
- p is the probability of success in a single trial (probability of selecting a male)
- C(n, k) is the binomial coefficient, calculated as C(n, k) = n! / (k! * (n - k)!)
In this case, n = 7, k = 4, and p = 0.70 (probability of selecting a male). Therefore, the probability of selecting 4 males out of 7 spectators is:
P(X = 4) = C(7, 4) * (0.70)^4 * (1 - 0.70)^(7 - 4)
b) To find the probability that at most 5 of the selected spectators are females, we need to calculate the cumulative probability of selecting 0, 1, 2, 3, 4, and 5 females. This can be done by summing the individual probabilities for each case.
P(X ≤ 5 females) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) + P(X = 4) + P(X = 5)
To calculate each individual probability, we use the same binomial probability formula as in part a), with p = 0.30 (probability of selecting a female).
Finally, we sum up the probabilities for each case to find the probability that at most 5 of the selected spectators are females.
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help me with this please
Answer:
Here is the sample space:
(1, 1), (1, 2) (1, 3), (2, 1), (2, 2), (2, 3), (3, 1),
(3, 2), (3, 3)
Write an equation of a vertical line that contains the point (-2,5)
Answer:
x=-2
Step-by-step explanation:
The line is vertical and/or undefined and it passes through the point (-2,5).