Answer:
y = 4x - 10
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Here m = 4 , thus
y = 4x + c ← is the partial equation
To find c substitute (3, 2) into the partial equation
2 = 12 + c ⇒ c = 2 - 12 = - 10
y = 4x - 10 ← equation of line
A professor has 125 students in her classes at the beginning of the semester, but 16 students withdraw from her classes before Test #3. If she has 1 classes in total and each class has an equal number of students, how many students are in each class? Round your answer to the nearest ones (i.e., one student).
Answer:
Students in her classes At the beginning of the semester, but 13 students withdraw from her classes before Test three. So now she has 150 students. If she has one classes in total, in each class has an equal number of students. How many students are in each class round your answer to the nearest ones? Well, first of all, if she only has one class, then there's 150 students in that class is or class, this is the middle school math teacher signing out.
lazyuser30
What is the value of the discriminant, b2-4ac, for the quadratic equation 0=x^2-4x+5, and what does it mean about the number of real solutions the equation has
Answer:
-4, no real solutions
Step-by-step explanation:
b^2 is 16 since b is -4
4ac = 4*1*5 = 20
16 - 20 is -4
no real solutions since you cant get the squareroot out of a negative number (at least not real numbers)
Answer:B
Step-by-step explanation: The discriminant is −4, so the equation has no real solutions.
Got it from EDG Its right trust
3. A rectangle has a length of 2x – 9 and a width of x2 + 3x – 4. What is the polynomial that models the area
of the rectangle?
Answer:
(C) 2x^3 - 3x^2 - 35x + 36
Step-by-step explanation:
First multiply 2x by x^2 + 3x - 4:
(2x)(x^2 + 3x - 4)
2x^3 + 6x^2 - 8x
Next multiply -9 by x^2 + 3x - 4:
(-9)(x^2 + 3x - 4)
-9x^2 - 27x +36
Now add the two polynomials by adding like terms:
(2x^3 + 6x^2 - 8x) + (-9x^2 - 27x +36)
2x^3 + 6x^2 - 9x^2 - 8x - 27x + 36
2x^3 - 3x^2 - 35x + 36
Hope this helps (●'◡'●)
help me for 20 points
Answer:
because its 5 squared, therefore, the first number can not be a sqaure number
Step-by-step explanation:
Answer:
see below
Step-by-step explanation:
5^9
The power is an odd number
To be a perfect square, the power has to be an even number
if p(x)=x^2+2x-5 and q(x)=-3, what is p(x)-q(x)?
Answer:
\( {x}^{2} + x - 2\)
Step-by-step explanation:
\(p(x)=x^2+2x-5 \: and \: q(x)=x-3 \\ \\ p(x) - q(x) \\ \\ = x^2+2x-5 - (x - 3) \\ \\ = x^2+2x-5 - x + 3 \\ \\ = {x}^{2} + 2x - x + 3 - 5 \\ \\ p(x) - q(x) = {x}^{2} + x - 2\)
Answer:c
Step-by-step explanation:
the heart is a four-chambered muscular pump. in one day, how many gallons of blood are pumped throughout the body?
Answer:
Step-by-step explanation:
6,000-7,500 liters (1,500-2,000 gallons) of blood daily. The average adult body contains about five quarts of blood, which continually circulates throughout the body. Hope this helps!
Find values of p for which the integral
∫10xpln(x)dx
converges and calculate the value of the integral for these values of p.
The integral ∫10x^p * ln(x) dx converges for all values of p except p = -1.
To determine the values of p for which the integral ∫10x^p * ln(x) dx converges, we need to consider the convergence of the integrand for different values of p. The integral will converge if the integrand is well-behaved and does not exhibit any divergence.
Let's analyze the integrand in two separate cases:
Case 1: p ≠ -1
When p ≠ -1, the integrand is well-defined for all x > 0. We can proceed with evaluating the integral.
∫10x^p * ln(x) dx = [x^(p+1) * ln(x)] / (p+1) + C
To calculate the value of the integral for a specific value of p, we can substitute the limits of integration into the antiderivative expression and evaluate the resulting expression.
Case 2: p = -1
When p = -1, the integrand becomes 10x^(-1) * ln(x), which poses a potential issue at x = 0. To determine if the integral converges for this case, we need to examine the behavior of the integrand near x = 0.
As x approaches 0, the expression ln(x) approaches negative infinity, which would cause the integrand to diverge. Therefore, for p = -1, the integral does not converge.
In summary, the integral ∫10x^p * ln(x) dx converges for all values of p except p = -1.
Please note that when evaluating the definite integral for specific limits of integration, you should substitute the limits into the antiderivative expression and then calculate the difference of the resulting expressions evaluated at the upper and lower limits.
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complete the table for each equation.
Help plz
Answer: (1, -2) (4, -8) (-5, 10) ( 3, -6)
Step-by-step explanation:
You solve all of them by inputting the x value's into the x in the equation
Here:
y= -2(1) x=1 y= -2
y= -2(4) x=4 y= -8
y= -2( -5) x= -5 y= 10
y= -2(3) x= 3 y= -6
determine the inteerval on which the following function is convave upor concave down. identify any inflection points. f(x)= x^4-4x^3 3
To determine the intervals on which the function \(f(x) = x^4 - 4x^3 + 3\) is concave up or concave down, we need to find the second derivative of the function and analyze its sign.
First, let's find the first derivative of f(x):
\(f'(x) = 4x^3 - 12x^2\)
Next, let's find the second derivative of f(x) by taking the derivative of f'(x):
\(f''(x) = 12x^2 - 24x\)
To determine the intervals of concavity, we need to find where f''(x) is positive (concave up) or negative (concave down). We can do this by analyzing the sign of f''(x).
Now, let's find the values of x for which f''(x) = 0, as these will give us potential inflection points:
\(12x^2 - 24x = 0\)
12x(x - 2) = 0
x = 0 or x = 2
The potential inflection points are x = 0 and x = 2.
To analyze the concavity of the function, we'll use test points within the intervals between the potential inflection points and beyond.
For x < 0, let's choose x = -1 as a test point:
\(f''(-1) = 12(-1)^2 - 24(-1) = 12 + 24 = 36\)
Since f''(-1) = 36 > 0, the function is concave up for x < 0.
For 0 < x < 2, let's choose x = 1 as a test point:
\(f''(1) = 12(1)^2 - 24(1) = 12 - 24 = -12\)
Since f''(1) = -12 < 0, the function is concave down for 0 < x < 2.
For x > 2, let's choose x = 3 as a test point:
\(f''(3) = 12(3)^2 - 24(3) = 108 - 72 = 36\)
Since f''(3) = 36 > 0, the function is concave up for x > 2.
In summary:
The function is concave up for x < 0 and x > 2.
The function is concave down for 0 < x < 2.
The inflection points are x = 0 and x = 2.
I hope this clarifies the concavity and inflection points of the given function. Let me know if you have any further questions!
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you need to paint office 143. if one gallon of paint covers 50 sf, how many gallons of pant will you need?
To determine the number of gallons of paint needed to cover office 143, we need to know the square footage of the office.
Once we have that information, we can divide the square footage by the coverage rate per gallon to calculate the required amount of paint.
Let's assume the square footage of office 143 is 800 square feet.
Number of gallons needed = Square footage / Coverage rate per gallon
Number of gallons needed = 800 square feet / 50 square feet per gallon
Number of gallons needed = 16 gallons
Therefore, you would need approximately 16 gallons of paint to cover office 143, assuming each gallon covers 50 square feet.
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A container built for transatlantic shipping is constructed in the shape of a right rectangular prism. Its dimensions are 7.5 ft by 7.5 ft by 6 ft. If the container is entirely full and, on average, its contents weigh 0.05 pounds per cubic foot, find the total weight of the contents. Round your answer to the nearest pound if necessary.
Answer:
Step-by-step explanation:
V = w h l
V = 7.5 * 7.5 * 6
V = 337.5cubic feet * 0.05
V = 16.875Lbs
V = 17Lbs (Rounded to nearest pound)
A store sold 7 white chairs for $148.75. How much 10 white chairs cost at the same unit price?
Answer:
212.5
Step-by-step explanation:
7 chairs = 148.75
148.75 ÷ 7 = 21.25
21.25 x 3 = 63.75
148.75 + 63.75 = 212.5
Name the plane represented by each surface of the box.
the top
Answer:
Hello the required image is missing attached below is the missing box
answer : FHGE
Step-by-step explanation:
The plane representing the top surface of the box is FHGE. there are still other planes there but do not represent the entire top surface of the Box and they are : FGE, HGE, FHG and FHE. This is because a plane can be represented by three to four Noncollinear points on a solid like a box.
If f(1) = 1 and f(n) = 2f(n-1) then find the value of f(6).
The value of the function f (6) will be 32.
What is substitution method?
Find the value of any one of the variables from one equation in terms of the other variable is called the substitution method.
Given that;
The value of the function;
f (1) = 1
And, The function is;
f (n) = 2 f (n - 1)
Now, Find the value of the function f (6) as;
Since, The function is;
f (n) = 2 f (n - 1)
Substitute n = 2, we get;
f (n) = 2 f (n - 1)
f (2) = 2 f (2 - 1)
f (2) = 2 f (1)
f (2) = 2 x 1
f (2) = 2
And, Substitute n = 3, we get;
f (n) = 2 f (n - 1)
f (3) = 2 f (3 - 1)
f (3) = 2 f (2)
f (3) = 2 x 2
f (3) = 4
And, Substitute n = 4, we get;
f (n) = 2 f (n - 1)
f (4) = 2 f (4 - 1)
f (4) = 2 f (3)
f (4) = 2 x 4
f (4) = 8
And, Substitute n = 5, we get;
f (n) = 2 f (n - 1)
f (5) = 2 f (5 - 1)
f (5) = 2 f (4)
f (5) = 2 x 8
f (5) = 16
And, Substitute n = 6, we get;
f (n) = 2 f (n - 1)
f (6) = 2 f (6 - 1)
f (6) = 2 f (5)
f (6) = 2 x 16
f (6) = 32
Thus, The value of the function f (6) will be 32.
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Please answer this question now in two minutes
Answer:
IJK and KJM
Step-by-step explanation:
Vertical Angles are the angles opposite each other when two lines cross
they are always equal in measure and share a point (in this case J)
hope this helps
Work out the value of x.
Answer:
The value of x could be anything, so I don't know what you mean until you have some sort of equation or graph - or anything at that.
Step-by-step explanation:
Larry deposits $36,000 into each of two savings accounts.
Account I earns 2.6% interest compounded annually.
Account II earns 2.6% annual simple interest.
There are no additional deposits or withdrawals.
What is the sum of the balances of these accounts at the end of 9 years?
$89,779.37
$90,710.74
$90,958.61
$93,069.22
Answer:
$90,710.74
Step-by-step explanation:
Answer:
it's the 3rd one
Step-by-step explanation:
it's so easy
A company makes 150 bags.
43 of the bags have buttons but no zips.
38 of the bags have zips but no buttons.
34 of the bags have neither zips nor buttons.
A bag is selected at random.
What is the probability that the bag has buttons?
8. Alvin purchased $1,300,000 worth of videogame set and made a $150,000 down payment. He agreed to pay the balance by making equal payments at the end of each month for 20 years. What is the size of the monthly payment if the interest charged is 16% compounded quarterly?
We have a purchase of $1,300,000.
The downpayment is $150,000 and the rest is financed.
We can calculate the amount that is owed as:
\(\begin{gathered} C=1,300,000-150,000 \\ C=1,150,000 \end{gathered}\)This amount will be paid in equal amounts, monthly for 20 years.
The interest rate is 16% compounded quarterly.
We have to start by converting the interest rate in a monthly-compounded equivalent rate.
A rate of 16% compounded quarterly (m=3) will be equivalent to a monthly rate r. We can calculate r as:
\(\begin{gathered} (1+r)^{12}=(1+\frac{0.16}{3})^3 \\ (1+r)^4=1+\frac{0.16}{3} \\ (1+r)^4\approx1+0.05333 \\ 1+r\approx1.0533^{\frac{1}{4}} \\ r\approx1.013-1 \\ r\approx0.013 \end{gathered}\)We then can calculate the payments as an annuity with r = 0.013 and 20*12 = 240 payments.
We can calculate the amount he will pay each month as:
\(\begin{gathered} P=\frac{r\cdot PV}{1-(1+r)^{-n}} \\ P=\frac{0.013\cdot1150000}{1-(1+0.013)^{-240}} \\ P=\frac{14950}{1-1.013^{-240}} \\ P=\frac{14950}{1-0.045} \\ P=\frac{14950}{0.955} \\ P=15654.45 \end{gathered}\)Answer: the monthly payment is approximately $15654.45.
In 2005, the total waste generated in a certain country was 8.618 x 10^8 pounds. Also in 2005, the country's population was 2.76 x 10 ^5 people. Determine the garbage per capita (per person) in that
country in the year 2005.
(use scientific notation to answer this question)
Answer:
To determine the garbage per capita, we need to divide the total waste generated by the population. In 2005, the total waste generated was 8.618 x 10^8 pounds and the population was 2.76 x 10^5 people, so the garbage per capita in that country in 2005 was 3.12 pounds per person. This can be calculated as follows:
8.618 x 10^8 pounds / 2.76 x 10^5 people = 3.12 pounds/person
Alternatively, we can rewrite the population in scientific notation to make the calculation easier:
8.618 x 10^8 pounds / (2.76 x 10^5) people = 8.618 x 10^8 pounds / (2.76 x 10^3 x 10^2) people
Now we can cancel out the common factors of 10^2 from the numerator and denominator to get the final result:
8.618 x 10^8 pounds / (2.76 x 10^3 x 10^2) people = 8.618 x 10^8 pounds / (2.76 x 10^3) people
= 8.618 x 10^5 pounds / (2.76) people
= 3.12 pounds/person
This shows that in 2005, the garbage per capita in that country was 3.12 pounds per person.
What is the equation of the line, in standard form, connecting points (2, -3) and (4, 4)?
Responses
7x−2y−26=07 x minus 2 y minus 26 is equal to 0
7x+y−13=07 x plus y minus 13 is equal to 0
7x−2y−20=07 x minus 2 y minus 20 is equal to 0
2x−2y−7=02 x minus 2 y minus 7 is equal to 0
3x−y+10=0
Answer:
7x - 2y - 20 = 0
Step-by-step explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
calculate m using the slope formula
m = \(\frac{y_{2}-y_{1} }{x_{2}-x_{1} }\)
with (x₁, y₁ ) = (2, - 3 ) and (x₂, y₂ ) = (4, 4 )
m = \(\frac{4-(-3)}{4-2}\) = \(\frac{4+3}{2}\) = \(\frac{7}{2}\) , then
y = \(\frac{7}{2}\) x + c ← is the partial equation
to find c substitute either of the 2 points into the partial equation
using (4, 4 )
4 = \(\frac{7}{2}\) (4) + c = 14 + c ( subtract 14 from both sides )
- 10 = c
y = \(\frac{7}{2}\) x - 10 ← in slope- intercept form
multiply through by 2
2y = 7x - 20 ( subtract 2y from both sides )
0 = 7x - 2y - 20 , that is
7x - 2y - 20 = 0 ← required equation
Suppose 's planet A diameter is approximately 10 times 's planet B and both bodies are spheres. What is the ratio of their volumes?
The ratio of the volumes of two spheres is proportional to the cube of their radii (or diameters), hence it is 125:1.
Since planet A has a diameter that is approximately 10 times that of planet B, its radius is 5 times that of planet B.
Therefore, the ratio of the volumes of planet A to planet B can be calculated as follows:
(Volume of A) / (Volume of B) = (4/3)πrA³ / (4/3)πrB³
where rA is the radius of planet A and rB is the radius of planet B.
Since rA = 5rB, we can substitute this into the equation above:
(Volume of A) / (Volume of B) = (4/3)π(5rB)³ / (4/3)πrB³
Simplifying the equation by canceling out the common terms, we get:
(Volume of A) / (Volume of B) = 5³
Therefore, the ratio of the volumes of planet A to planet B is 125:1. In other words, planet A has a volume that is 125 times greater than that of planet B.
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Work out the area of this semicircle. Take pi to be 3.142 and give your answer to 2 decimal places.
The area of the semicircle is 39.275 square cm
How to determine the area of the semicircle?From the question, we have the following parameters that can be used in our computation:
Diameter = 10 cm
Start by calculating the radius of the semicircle
So, we have the following representation
radius = Diameter/2
This gives
radius = 10/2
Evaluate
radius = 5
The area of the semicircle is then calculated as
Area = πr²/2
So, we have
Area = 3.142 * 5²/2
Evaluate
Area = 39.275
Hence, the area is 39.275 square cm
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Use the slope-intercept form to write a equation of the line that passes through the given points. Use function notation where y = f(x).
(10, 2) and (8, 10)
The slope of a line is given.
a. Determine the slope of a line parallel to the given line, if possible.
b. Determine the slope of a line perpendicular to the given line, if possible.
the equation of the line is f(x) = -4x + 42.
To find the equation of the line that passes through the points (10, 2) and (8, 10) using the slope-intercept form, we first need to determine the slope of the line.
a. To determine the slope of a line parallel to the given line, we can use the fact that parallel lines have the same slope. So, we need to find the slope of the given line passing through (10, 2) and (8, 10).
Slope (m) = (y2 - y1) / (x2 - x1)
= (10 - 2) / (8 - 10)
= 8 / (-2)
= -4
Therefore, the slope of any line parallel to the given line is also -4.
b. To determine the slope of a line perpendicular to the given line, we can use the fact that perpendicular lines have negative reciprocal slopes. So, the perpendicular slope would be the negative inverse of the given slope.
Perpendicular slope = -1 / (-4)
= 1/4
Therefore, the slope of any line perpendicular to the given line is 1/4.
The equation of the line passing through the points (10, 2) and (8, 10) using the slope-intercept form (y = f(x)) can be found using the point-slope form:
y - y1 = m(x - x1)
Taking (10, 2) as (x1, y1), we have:
y - 2 = -4(x - 10)
y - 2 = -4x + 40
y = -4x + 42
Hence, the equation of the line is f(x) = -4x + 42.
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Widmer Company had gross wages of $350,000 during the week ended June 17. The amount of wages subject to social security tax was $350,000, while the amount of wages subject to federal and state unemployment taxes was $52,500. Tax rates are as follows:
Line Item Description Percentage
Social security 6. 0%
Medicare 1. 5%
State unemployment 5. 4%
Federal unemployment 0. 8%
The total amount withheld from employee wages for federal taxes was $70,000
The tax rate for social security is 6.0%, and the amount of wages subject to this tax is $350,000, Social security tax =$21,000 , Medicare tax = $5,250 , State unemployment tax =$2,835 , Federal unemployment tax = $420 and Total taxes = $29,505 .
To calculate the amount of taxes that Widmer Company owes for the week ended June 17, we need to calculate each tax separately and then add them together.
First, let's calculate the social security tax. The tax rate for social security is 6.0%, and the amount of wages subject to this tax is $350,000. So:
Social security tax = 6.0% x $350,000 = $21,000
Next, let's calculate the Medicare tax. The tax rate for Medicare is 1.5%, and the amount of wages subject to this tax is also $350,000. So:
Medicare tax = 1.5% x $350,000 = $5,250
Now let's calculate the state unemployment tax. The tax rate for state unemployment is 5.4%, and the amount of wages subject to this tax is $52,500. So:
State unemployment tax = 5.4% x $52,500 = $2,835
Finally, let's calculate the federal unemployment tax. The tax rate for federal unemployment is 0.8%, and the amount of wages subject to this tax is also $52,500. So:
Federal unemployment tax = 0.8% x $52,500 = $420
Now let's add up all of the taxes:
Total taxes = Social security tax + Medicare tax + State unemployment tax + Federal unemployment tax
Total taxes = $21,000 + $5,250 + $2,835 + $420
Total taxes = $29,505
This means that Widmer Company owes $29,505 in taxes for the week ended June 17.
Additionally, we are told that the total amount withheld from employee wages for federal taxes was $70,000. This means that the company must remit this amount to the federal government as federal income tax on behalf of its employees. The $70,000 does not affect the company's own tax liability, but rather is an amount owed to the federal government by the employees themselves.
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Which equation matches the graph?
y=-2x
Step-by-step explanation:
it can't be y=2x and y=-½ because it passes by the opposite side of the given graph
The resistance, R, of a wire varies directly as its length and inversely as the square of its diameter. If the resistance of a wire 4900ft long with a diameter of 0.02 inches is 18737 ohms, what is the resistance of 3900ft of the same type of wire with a diameter of 0.06 inches? (Leave k in fraction form or round to at least 3 decimal places. Round off your final answer to the nearest hundredth.)
We know that the resistance R varies proportionally to the wire's length L and inveresly to the square of its diameter D.
We can express this as:
\(R=k\cdot\frac{L}{D^2}\)where k is a constant.
We can calculate the value of k using the expression above and knowing that R = 18,737 ohms when L = 4,900 ft and D = 0.02 in.
We replace with the values and calculate k as:
\(\begin{gathered} R=k\cdot\frac{L}{D^2} \\ k=\frac{R\cdot D^2}{L} \\ k=\frac{18737\cdot0.02^2}{4900} \\ k=\frac{18737\cdot0.0004}{4900} \\ k=\frac{7.4948}{4900} \end{gathered}\)We then can calculate the resistance for a wire with length L = 3900 ft and diameter D = 0.06 as:
\(\begin{gathered} R=0.00153\cdot\frac{L}{D^2} \\ R=0.00153\cdot\frac{3900}{(0.06)^2} \\ R=0.00153\cdot\frac{3900}{0.0036} \\ R=1657.5 \end{gathered}\)Answer: the resistance is R = ohms.
Which of the following expressions would simplify to be the multiplicative identity? 2 3 · 3 2 2 3 · 2 3 2 1 2 0
Answer:
2^1 i think
Step-by-step explanation:
Answer: 2^1
Step-by-step explanation:
The multiplicative identity is any numbers times one is that number.
Solve for x:
5x−29>−34 OR 2x+31<29
A. x<−1 OR x>−1
B. x<−1
C. There are no solutions
D. All values of X are solutions
The solution for the inequalities is x > - 1 OR x < -1.
What is linear inequality?The mathematical expression for inequality states that neither side is equal. In mathematics, inequality occurs when the relationship results in a non-equal comparison between two expressions or numbers. Any of the inequality symbols, such as greater than (>), less than (<), greater than or equal to (≥), less than or equal to (≤), or not equal to (≠).
Given : 5x - 29 > -34 OR 2x + 31 < 29.
to solve the equations,
5x - 29 > -34 OR 2x + 31 < 29.
For 5x - 29 > -34
On adding both sides by 29.
5x > - 34 + 29 .
5x > -5
On dividing both sides by 5.
x > - 1 .
For 2x + 31 < 29.
On subtracting both sides by 31
2x < 29 -31
2x < - 2
On dividing both sides by 2.
x < -1
So , x > - 1 OR x < -1 .
Therefore, option A is correct.
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someone pls help me t-t
Answer:
35+62 = 97
50 - 97 = -47
you are 47 dollars in debt