Answer:
The number of minutes should be 68.
Given information:A cell phone plan costs $23.70 monthly for 700 minutes of talk time. It costs an additional $0.06 per minute for each minute over 700 minutes.
Getting e-mail access costs 20% of the price for 700 minutes of talk time. The total cost for all 6 months is $195.12.Equation and number of minutes:The equation is 195.12=6(0.06m+23.70+0.20(23.70))195.12 = 0.36m + 142.2 + 28.4424.48 = 0.36mm = 68 minutes
Find the inverse of the following function. f(x) 8√ x for x > 0
Inverse function of f(x) 8√ x for x > 0 is f^-1(y)is 8√y for y > 0. The inverse of a function is a function that "undoes" the original function.
What is inverse of a function?In order for a function to have an inverse, it must be one-to-one, meaning that each input value must correspond to a.
if the original function maps input values to output values, the inverse function maps the output values back to the input values.
To find the inverse of the function f(x) = 8√x for x > 0, we can use the following steps:
Replace f(x) with y. This gives us y = 8√x for x > 0.
Replace x with f^-1(y). This gives us f^-1(y) = 8√y.
Solve for y. To solve for y, we can square both sides of the equation:
y^2 = (8√y)^2
y^2 = 64y
y^2 - 64y = 0
y(y - 64) = 0
This equation has two solutions: y = 0 or y = 64. However, the original function is only defined for x > 0, so the inverse function is only defined for y > 0. This means that the inverse function is f^-1(y) = 8√y for y > 0.
Therefore, the inverse of the function f(x) = 8√x for x > 0 is f^-1(y) = 8√y for y > 0.
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URGENT
pls answer soon
The measures of the angles are m ∠ 1 = 68°, m ∠ 2 = 126° and m ∠ 3 = 54°
What are parallel lines?Parallel lines are those straight lines that are always the same distance apart from each other. Parallel lines never meet, no matter how much they are extended.
Given is a figure, in which, lines d, e and lines f, g are parallel and h is a transversal.
In figure, (refer to figure attached)
ABC is a triangle,
Therefore, according to angle sum property of a triangle,
m ∠ 1 + 58° + 54° = 180°
m ∠ 1 = 180° - 112°
m ∠ 1 = 68°
Since, f║g
m ∠ 2 + 54° = 180° (consecutive angles between parallel line are supplementary)
m ∠ 2 = 126°
Similarly, d║e
m ∠ 2 + m ∠ 3 = 180°
m ∠ 3 = 180° - 126°
m ∠ 3 = 54°
Hence, The measures of the angles are m ∠ 1 = 68°, m ∠ 2 = 126° and m ∠ 3 = 54°
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or each table find if the y/x is a constant number or fraction Hints : A 6/2, 12/4, 18/6 and 24/8 all reduce to 3/1 so all are the same and all are good. B 5/8, 10/16, 15/24, 20/32 all reduce to 5/8 and all are the same so good. C 9/10, 10/11, 11/12, 12/13 none are the same so no D 0, 1, 9/3, 25/5 not the same so no
Answer:
"15" (and any subsequent words) was ignored because we limit queries to 32 words
Help i am confused
I don't know what this is
HELP ASAP
will mark brainllest if its the best answer.
Answer:
Below
Step-by-step explanation:
First one and third one and 4th one are true
which point could represent 5/3?
A
B
C
D
Answer:
C
Step-by-step explanation:
5/3 can be written as 1.6666667 in decimal form. C is the only option greater than 1
Select the correct answer from each drop-down menu. circle a has diameters ef and ih intersecting approximately at 90 degrees, radius ad with point d lies on minor arc hf, and chord bc intersecting diameter ef near point e at a right angle. point a is the center of this circle. the ratio of the lengths of and is 2 : 1.
Answer:EF to AD
Step-by-step explanation:
regression analysis invites us to think in terms of an independent variable resulting from or being caused by a dependent variable's actions. true false
The given statement , regression analysis invites us to think in terms of an independent variable resulting from or being caused by a dependent variable's actions is true.
Regression analysis is a group of statistical procedures used in statistical modelling to determine the relationships between a dependent variable (often referred to as the "outcome" or "response" variable, or a "label" in machine learning jargon), and one or more independent variables (often referred to as "predictors," "covariates," "explanatory variables," or "features").
In linear regression, the most typical type of regression analysis, the line (or a more complicated linear combination) that most closely matches the data in terms of a given mathematical criterion is found.
When using the ordinary least squares method, for instance, the specific line (or hyperplane) that minimizes the sum of squared differences between the genuine data and that line is computed (or hyperplane).
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Which is an equation of a line that passes through the point (-1, -4 and has an undefined slope?
Write the answer in the blank.
What number is 280 more than 220?
Answer: 500
Step-by-step explanation:
280 + 220 is 500
Answer:
The number is 500.
Step-by-step explanation:
Let's assume that,
→ Missing number = x
Forming the equation,
→ x = 220 + 280
Now the value of x will be,
→ x = 220 + 280
→ [ x = 500 ]
Hence, the number is 500.
a plant cell had 5.8 x 10^-6 m and width 2.9 x 10^-6 m. what is the ratio of the plants cells length to its width
The ratio of the plant cell's length to its width is 2:1 (5.8 x 10^-6 m to 2.9 x 10^-6 m).
To calculate the ratio of the plant cell's length to its width, we first need to find the length and width of the cell. The given data states that the length of the cell is 5.8 x 10^-6 m and the width is 2.9 x 10^-6 m. To calculate the ratio, we divide the length by the width. In this example, we divide 5.8 x 10^-6 m by 2.9 x 10^-6 m, which equals 2. Thus, the ratio of the plant cell's length to its width is 2:1.
length / width = 5.8 x 10^-6 m / 2.9 x 10^-6 m = 2
length : width = 5.8 x 10^-6 m : 2.9 x 10^-6 m = 2:1
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if two vectors are perpendicular to each other, their cross product must be zero.
true
false
Answer: False
Step-by-step explanation: This is false because perpendicular mean that 2 lines cross to make a 90 degree angle. If a cross product is 0 the lines never touch meaning its parallel.
the standard error of the slope coefficient is 0.121855. calculate the lower limit of the 95% confidence interval of the slope coefficient for the regression of kinesthetic vark scores on the visual vark scores for biology students:
Lower limit = 0.45 - (1.96 * 0.121855) = 0.2209. This means that we can be 95% confident interval that the true slope coefficient lies between 0.2209 and 0.45.
1. The standard error of the slope coefficient can be calculated by dividing the sample standard deviation of the residuals (obtained from the regression output) by the square root of the sample size.
2. The lower limit of the 95% confidence interval of the slope coefficient can be calculated by subtracting 1.96 times the standard error of the slope coefficient from the coefficient itself.
Lower limit = 0.45 - (1.96 * 0.121855) = 0.2209
Interpretation
The lower limit of the 95% confidence interval for the slope coefficient of the regression of kinesthetic VARK scores on the visual VARK scores for biology students is 0.2209. This means that we can be 95% confident that the true slope coefficient lies between 0.2209 and 0.45.
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What is the interest earned in a savings
account after 12 months on a balance of
$3500 if the interest rate is 1.5% APY
compounded yearly?
Answer:
The interest earned on a savings account with a balance of $3500 and an interest rate of 1.5% per year compounded yearly would be $52.50 after 12 months.
Step-by-step explanation:
To calculate the interest earned on a savings account, you need to know the interest rate, the length of time the money is deposited, and the starting balance. Based on the information provided, it appears that the interest rate is 1.5% per year, the money is deposited for 12 months, and the starting balance is $3500.
To calculate the interest earned, you would first need to convert the interest rate to a decimal by dividing it by 100. In this case, the interest rate would be 0.015. You would then multiply the interest rate by the starting balance to get the amount of interest earned in a year. In this case, the interest earned would be $3500 * 0.015 = $52.50.
Since the interest is compounded yearly, the total balance after one year would be the starting balance plus the interest earned. In this case, the total balance would be $3500 + $52.50 = $3552.50. Therefore, the interest earned on a savings account with a balance of $3500 and an interest rate of 1.5% per year compounded yearly would be $52.50 after 12 months.
true or false the effect size for a regression analysis will be equal to the coefficient of determination
The statement 'the effect size for a regression analysis will be equal to the coefficient of determination' is True
In this question we have been given a statement 'the effect size for a regression analysis will be equal to the coefficient of determination'
We need to state whether the given statement is true or false.
We know that the effect size measures the strength of the relationship between two variables on a numeric scale.
And the coefficient of determination(R²) measures how well a statistical model predicts an outcome. It is a number between 0 and 1.
R² is a measure of effect size
Therefore, 'the effect size for a regression analysis will be equal to the coefficient of determination' is True.
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4
Lee has 6 pygmy goats. Their weights, in kg, are listed below.
32 23 31 28 36
26
Two of the goats wander off and don't return. The remaining 4 goats have a mean
weight of 27.25 kg. Find the weights of the two goats who wandered off.
4
GR
Answer:
The weight of the two goats is 2.08 kg
Step-by-step explanation:
Total avg
32+23+31+28+36+26 = 176176/6 = 29. 33Avg of the two goats
29.33 - 27.25 = 2.08 kgAvg of one goat
2.08 /2 = 1.04 The avg of one goat 1.04kg11-14) if b to the power x, = 7 and b > 0, then 7 / b must equal which of the following:
a) b to power (x-1)
b) b to power (x+1)
c) 7 to power x
Answer:
Here is the answer
Step-by-step explanation:
If b to the power x is equal to 7 and b is a positive number, then 7 / b must equal b to the power (x-1).
We can see this by applying the definition of an exponent: b to the power x is equal to b multiplied by itself x times. For example, if b is 2 and x is 3, then 2 to the power 3 is equal to 2 * 2 * 2 = 8.
If we divide both sides of this equation by b, we get:
7 / b = (b * b * ... * b) / b = b * b * ... * b = b to the power (x-1)
Therefore, if b to the power x is equal to 7 and b is a positive number, then 7 / b must equal b to the power (x-1). The answer is therefore a) b to the power (x-1).
Find an equation that fits this question please
y = [tex]\frac{3}{4} x[/tex] is the relationship between two variables x and y.
What is a direct variation relationship?The relationship between two variables in which one is a constant multiple of the other is referred to as direct variation. For instance, two variables are said to be in proportion when one affects the other. b = ka is the equation if b is directly proportional to a. (where k is a constant).When one variable changes and the second variable varies proportionally while the ratio of the second variable to the first variable stays constant, the relationship is said to have direct variation. For instance, there is a constant, k, which is the ratio of y:x when y varies directly as x.from the Table x and y in the ratio 4 : 3
i. e
The equation related to x and y is :
y = [tex]\frac{3}{4} x[/tex].
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What is the area of a rectangle with a height of t ^ 2 + 7t + 6 and a width of 2t + 1
The area of a rectangle with given length and width is 2t³+15t²+19t+6 square units.
What is the area of a rectangle?The area occupied by a rectangle within its boundary is called the area of the rectangle. The formula to find the area of a rectangle is Area = Length × Breadth.
Given that, length of a rectangle =t²+7t+6 and width of rectangle =2t+1.
Here, area of a rectangle = (t²+7t+6)×(2t+1)
= t²(2t+1)+7t(2t+1)+6(2t+1)
= 2t³+t²+14t²+7t+12t+6
= 2t³+15t²+19t+6 square units
Therefore, area of a rectangle is 2t³+15t²+19t+6 square units.
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A window company makes two square windowpanes. Windowpane A
has an area of 176 square inches. Windowpane B has an area of 275
square inches. How much longer is a side of Windowpane B than a
side of Windowpane A? Study the pictures.
Answer: 99.
If you take 275 and subtract it by 176, it should be 99, if I’m correct.
If three hens can lay 3 eggs in 3 days how many days can 7 hens lay 7 eggs? Pls help!!
Answer:
3 days
Step-by-step explanation:
Karissa begins to solve the equation StartFraction one-half EndFraction left-parenthesis x minus 14 right-parenthesis plus 11 equals StartFraction one-half EndFraction x minus left-parenthesis x minus 4 right-parenthesis.. Her work is correct and is shown below.
Three lines of math. The first line, StartFraction one-half EndFraction left-parenthesis x minus 14 right-parenthesis plus 11 equals StartFraction one-half EndFraction x minus left-parenthesis x minus 4 right-parenthesis. The second line, StartFraction one-half EndFraction x minus 7 plus 11 equals StartFraction one-half EndFraction x minus x plus 4. The third line StartFraction one-half EndFraction x plus 4 equals negative StartFraction one-half EndFraction x plus 4.
StartFraction one-half EndFraction x minus 7 plus 11 equals StartFraction one-half Endfraction x minus x plus 4.
StartFraction one-half EndFraction x plus 4 equals negative StartFraction one-half Endfraction x plus 4.
When she subtracts 4 from both sides, Startfraction one-half EndFraction x equals negative StartFraction one-half EndFraction x. results. What is the value of ?
–1
–negative StartFraction one-half EndFraction
0
StartFraction one-half EndFraction. BRAINIEST
When she subtracts 4 from both side of the equation, then she gets the value of x is 0.
What is expression?Expressions means the idea of expressing numbers using letters or alphabets without specifying their actual values, the expression is the statement consisting variable, numbers, and arithmetical operation.
Given that, Karissa begins to solve the equation,
1/2(x-14)+11 = 1/2x-(x-14)
1/2x-1/2(14)+11 = -1/2x-x+4
1/2x-7+11 = -1/2x+4
1/2x+4 = -1/2x+4
1/2x+1/2x = 4-4
x = 0
Hence, When she subtracts 4 from both sides, then x = 0
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I Agree With The Other Person
PLEASE EXPLAIN AND SHOW YOUR WORK THANK YOU!!
Solve as a MIXED NUMBER:
-2.25 + 0.4x = -2.8
THANK YOU!
Answer:
-1 3/8
Step-by-step explanation:
-2.25 + 0.4x = -2.8
-2.25 + 2.25 + 0.4x = -2.8 + 2.25 ==> add 2.25 on both sides to isolate x
0.4x = -0.55
(0.4x = -0.55)*20 ==> multiply the equation by 20 to remove decimals
8x = -11
x=-11/8
x=-(3+8)/8 ==> turn x into a mixed number
x=-3/8 - 8/8
x=-3/8 - 1 ==> simplify
x=-1 - 3/8
x=-(1 + 3/8)
x=-1 3/8
Write a recursive formula for an, the nth term of the sequence 2,-6,18,-54
Answer: The recursive formula for the sequence 2, -6, 18, -54 is given by the following:
a(n) = (-3) * a(n-1)
where a(n) is the nth term of the sequence and a(n-1) is the previous term in the sequence.
This means that each term in the sequence is equal to -3 times the previous term, with the first term being 2. For example, the third term of the sequence (a(3)) would be equal to (-3) * a(2), which is (-3) * (-6) = 18. The fourth term of the sequence (a(4)) would be equal to (-3) * a(3), which is (-3) * 18 = -54. And so on.
This recursive formula can be used to calculate the nth term of the sequence for any value of n.
with an is + Un object is thrown vertically upward from a height of hift. initial speed of Vof +/sec It's height h (in feet) after + seconds is given by h = -16+² + vot h Given this, if it thrown vertically upward from the ground with an initial speed of: A, 64 Ful sec.A) it what time will the height of the object be Is F₁ (two answers) B, how long will it take for the object to reach 63 f1
The time to reach 15 feet is 3.75 seconds and the times to reach 63 feet are 1.75 and 2.25 seconds
Time to reach 15 feetFrom the question, we have the following parameters that can be used in our computation:
h= -16t² + v₀t + h₀
Also, we have
v₀ = 64
h₀ = 0
So, the function becomes
h= -16t² + 64t
At a height of 15 feet, we have
-16t² + 64t = 15
So, we have
-16t² + 64t - 15 = 0
Factorize the equation
So, we have the following representation
(4t - 1)(4t - 15) = 0
Expand the equation
4t - 1 = 0 or 4t - 15 = 0
So, we have
4t = 1 or 4t = 15
This gives
t = 1/4 or t = 15/4
Express as decimals
t = 0.15 or t = 3.75
Time to reach 63 feetHere, we have
h= -16t² + v₀t + h₀
Also, we have
v₀ = 64
h₀ = 0
So, the function becomes
h= -16t² + 64t
At a height of 63 feet, we have
-16t² + 64t = 63
So, we have
-16t² + 64t - 63 = 0
Factorize the equation
So, we have the following representation
(4t - 7)(4t - 9) = 0
Expand the equation
4t - 7 = 0 or 4t - 9 = 0
So, we have
4t = 7 or 4t = 9
This gives
t = 7/4 or t = 9/4
Express as decimals
t = 1.75 and t = 2.25
Hence, the time is 2.25 seconds
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Complete question
An object is thrown vertically upward from a height of h₀ ft with an initial speed of v₀ ft/sec. Its height h (in feet) after t seconds is given by
h= -16t² + v₀t + h₀. Given this, if it is thrown vertically upward from the ground with an initial speed of 64 ft/sec,
(a) At what time will the height of the ball be 15 ft? (two answers)
(b) How long will it take for the ball to reach 63 ft?
answer for ten points!
Answer:
try 1239128981441231241
Step-by-step explanation:
myra
divide 6 by b, then double the result
Answer:
it is 12/2b
Step-by-step explanation:
answeranswer
What is the value of x?
Find the slope and the y-intercept.
Then use them to graph the line. -2x + 5y = -15
Answer:
Step-by-step explanation:
this is easy
Evaluate 7 Σ n=1 2(-2)^n-1.
Answer:
86
Step-by-step explanation:
I assume the question is [tex] \sum_{n=1}^{7} 2(-2)^{n-1} [/tex]
7: 2(-2)^6 = 128
6: 2(-2)^5 = -64
5: 2(-2)^4 = 32
4: 2(-2)^3 = -16
3: 2(-2)^2 = 8
2: 2(-2)^1 = -4
1: 2(-2)^0 = 2
128 - 64 + 32 - 16 + 8 - 4 + 2 = 86
you have a rectangular piece of wood that is 16 in by 8 in. a small length, x, is cut from each of the 4 sides yielding a surface area of 48 2 in . find the value of x.
After solving the equation, the value obtained for x will be equal to 20 in².
What is the area?An object's area is how much space it takes up in two dimensions. It is the measurement of the number of unit squares that completely encompass the surface of a compact figure.
The squared unit, which is frequently expressed as inches, square feet, etc., is the accepted unit of area.
As per the given information in the question,
Let the length of the rectangular wood, l = 16 in and,
The width of the rectangular wood, w = 8 in.
Use the area of a rectangle,
A = lw
A = (16)(8)
A = 128 in².
Let the area cut from each side be x.
If the area is cutting from all sides, then it will be 4x.
The surface area left after cutting the board = 48 in²
Then, the equation will be,
128 in² - 4x = 48 in²
4x = 128 in² - 48 in²
4x = 80
x = 80/4
x = 20 in²
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