The sales price for a sweater was $21. The sweater was 40% off. What was the originalprice of the sweater?

Answer:

1/4

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

ESPERO TE A YDUE :)

The value of the n is 1

In a direct variation, the relationship between two variables is of the form y = kx, where k is a constant of proportionality.

To find the constant of proportionality k in this problem, we can use the fact that the given points satisfy the equation for direct variation.

(2,18) is one of the given points, so we can substitute these values into the equation y = kx and solve for k:

18 = k(2)

k = 18/2

k = 9

Now that we have found the value of k, we can use it to find n when y = 9:

9 = 9n

n = 1

Therefore, the value of n is 1.

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Answer:

It will take 2.2 hours for the trains to meet.

Step-by-step explanation:

Given,

Distance between two trains = 396 miles

Speed of one train = 95 mph

Speed of other train = 85 mph

Combined speed of trains = 95+85 = 180 mph

Distance = Speed * Time

Time =

Time =

Time = 2.2 hours

It will take 2.2 hours for the trains to meet.

Keywords: speed, distance

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Step-by-step explanation:

The equivalent equation to the given one is:

h = A*t/(b - c)

We want to find an equation equivalent to the one below:

A = h*(b - c)/t

If we solve the equation for t, we would get:

t  = h*(b - c)/A

If we solve the equation for h, we will get:

h = A*t/(b - c)

If we solve the equation for b, we will get:

A = h*(b - c)/t

A*t/h = b - c

A*t/h + c = b

And if we solve it for c, we will get:

c = b - A*t/h

Then the correct option is the last one;

h = A*t/(b - c)

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Answer:

8 + X

Step-by-step explanation:

Answer:

To one decimal place,

y = 16.3 m

Step-by-step explanation:

Using SOHCAHTOA,

In this case we need to use CAH,

WE know the angle = 25 and the hypotenuse H = 18,

so,

y = adjacent

\(cos(angle) = y/H\\y = (18)(cos(25))\\y = 16.3135\\y = 16.3\)

Answer: 16.3 in.

Step-by-step explanation:

use SOH CAH TOA

cos x = adj/hyp

cos 25  = y/18

18 cos 25  = y

y= 16.3

Answer:

120

Step-by-step explanation:

I took the test

The maximum volume of the cylinder is approximately 1257 cubic centimeters.

The volume V of a right circular cylinder with radius r and height h is given by:

V = πr²h

Substituting the given expressions for the radius and height of the cylinder, we get:

V = πx²(800/πx - x)

Simplifying the expression, we get:

V = 800x - πx³

To find the maximum value of V, we need to find the value of x that maximizes V. We can do this by taking the derivative of V with respect to x, setting it equal to zero, and solving for x:

dV/dx = 800 - 3πx² = 0

3πx² = 800

x² = 800/3π

x ≈ 6.43

Substituting this value of x back into the expression for V, we get:

V ≈ 1257

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Answer:

it doesn't have any answer

Step-by-step explanation:

Answer:

14.1 inches

Step-by-step explanation:

The formula to be used to find the arc length is Ф = s(arc length) / r(radius)

First we rearrange the formula to find the arc length which would be s = Ф * r

This formula only works in radians so the first step is converting 135° to radians so we would do 135° * π radians/180° which would give us 3π/4

We would then multiply 3π/4 * 6 and get 18π/4,  plugging that value into a calculator returns us a value of ≈ 14.137

We then round to the nearest tenth and get an answer of 14.1 inches for the arc length of the circle below

Answer:

y=11x

Step-by-step explanation:

we use formula y2-y1/x2-x1 with 2 of the order pairs

22-11/2-1

11/1

11 is the slope

We find y intercept by finding when x is equal to zero and we subtract 11 until we find the 0 x unit since it goes down 11 every time

When x is zero y is zero so we write it like this

Y=11x

Hopes this helps please mark brainliest

The absolute value of the Rational number -474/513 is 474/513.

To find the sum of the rational numbers -8/9 and -2/57, you need to have a common denominator. The least common multiple (LCM) of 9 and 57 is 513. So, you can rewrite the fractions with a common denominator:

-8/9 = (-8/9) * (57/57) = -456/513

-2/57 = (-2/57) * (9/9) = -18/513

Now, you can add the fractions:

-456/513 + (-18/513) = (-456 - 18)/513 = -474/513

To find the absolute value of the rational number -474/513, you simply ignore the negative sign and take the value as positive:

| -474/513 | = 474/513

Therefore, the absolute value of the rational number -474/513 is 474/513.

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Answer:

No entiendo ingles perdon

The value of the piecewise function h(x) at x = 2 is (b) -1

From the question, we have the following parameters that can be used in our computation:

Part 1:

h(x) = x cubed for x less than negative 3

Part 2:

h(x) = 2 times x squared minus 9 for negative 3 is less than or equal to x which is less than 4,

Part 3

h(x) = 5 times x plus 4, for x greater than or equal to 4

When the above statements are represented properly, we have the following equations

Part 1: h(x) = x³ for x < -3

Part 2: h(x) = 2x² - 9 for -3 ≤ x < 4

Part 3: h(x) = 5x + 4, for x ≥ 4

To calculate the function h(2), we use the domain -3 ≤ x < 4

So, we have the following function

h(x) = 2x² - 9

Substitute the known values in the above equation, so, we have the following representation

h(2) = 2(2)² - 9

Evaluate the expression

h(2) = -1

Hence, the value is (b) -1

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Complete question

The piecewise function h(x) is shown on the graph.

the function is defined by part 1, which is x cubed for x less than negative 3, part 2, which is 2 times x squared minus 9 for negative 3 is less than or equal to x which is less than 4, and part 3 which is 5 times x plus 4, for x greater than or equal to 4

What is the value of h(2)?

Answer:

20

Step-by-step explanation:

10 + 8 + 2 = 20

Answer:

20 calls before 6 pm

10 + 2 +8 = 20

Step-by-step explanation:

Answer:

m > 1

Step-by-step explanation:

m+6 > 7

m > 7-6

m > 1

A: (4,-2)

B: (1,-1)

C: (1,-4)

Hope this helps! Just graph it.

if 3 apples cost 45 rupees

1 apple costs 45 : 3 = 15 rupees

how much with 5 apples cost? ​

5 x 15 = 75 rupees

Answer:

75 rupees

Step-by-step explanation:

Given:

3 apples cost 45 rupees

To Find:

How much with 5 apples cost

Solve:

if 3 apples cost 45 rupees

Since 3 apple cost 45

Thus, Find the cost of 1.

45 ÷ 3 = 15 rupees

Now,

5 x 15 = 75

Thus, 5 apples cost 75 rupees.

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The joint relative frequency of students who use a mobile device in an online class is approximately 32%.

The joint relative frequency of students who use a mobile device in an online class, we need to divide the frequency of the intersection of the "Mobile device" and "Online" categories by the total number of students (200 in this case) and express it as a percentage.

From the given two-way frequency table, we can see that the frequency for the intersection of "Mobile device" and "Online" is 64.

The joint relative frequency can be calculated as:

Joint Relative Frequency = (Frequency of intersection / Total number of students) × 100

Joint Relative Frequency = (64 / 200) × 100

Joint Relative Frequency ≈ 32%

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Answer:

whats the problem

Step-by-step explanation:

Answer:

yup

Step-by-step explanation:

Answer:

69

_______________

Answer: C

Step-by-step explanation:

Point D is at -14 on the number line.

In Mathematics, the midpoint of a line segment with two end points can be calculated by adding each end point on a line segment together and then divide by two (2).

Since E is the midpoint of line segment CD, we can logically deduce the following relationship:

Line segment CD = Line segment C + Line segment D

Midpoint E = (point C + point D)/2

By substituting the given points into the equation above, we have the following:

-3 = (8 + D)/2

-6 = 8 + D

D = -6 - 8

D = -14

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Answer:

it's 3. how could u not know that 0.4 x 3 = 1.2 duh

The value of the expression is 3.

An expression contains one or more terms with addition, subtraction, multiplication, and division.

We always combine the like terms in an expression when we simplify.

We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.

Example:

1 + 3x + 4y = 7 is an expression.

3 + 4 is an expression.

2 x 4 + 6 x 7 – 9 is an expression.

33 + 77 – 88 is an expression.

We have,

1.2 ÷ 0.4

= 1.2 / 0.4

The decimal point gets canceled.

= 12/4

= 3

Thus,

The value of the expression is 3.

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Answer:

1) n = 24

2) m = 18

3) x = 15

4) m = 30

y = 3

m = 2

k = 45

x = 4

k = 80

Step-by-step explanation:

Brainliest pls

Answer:

Sorry I dont have time to put all the answers but here is the answers for 1-4

1. n=24

n-8=16

using opposite rule

n=16+8

n=26

2. m=18

2m=36

opposite rule

m=36÷2

m=18

3. x=15

x+5=20

opposite rule

x=20-5

4. m=30

\( \frac{m}{5} = 6\)

m=6×5

m=30

Answer:

x=2

Step-by-step explanation:
Part 1:

\(\sqrt{4x-3}=5\)
First we can square both sides to remove the square root symbol:

\((\sqrt{4x-3})^{2} =(5)^{2}\)

Simplify:

\(4x-3=5\)

Add 3 to both sides and simplify:

\(4x=8\)

Divide both sides by 4 and simplify to find x:

x=2

Part 2:

Extraneous solutions are values that we get when solving equations that aren't really solutions to the equation.

If we substitute 2 into the equation we get:

\(\sqrt{4(2)-3} =5\)

Simplify to get:

\(\sqrt{8-3} =5\)

\(\sqrt{5} =5\) WHICH IS INCORRECT

Therefore the solution is extraneous

From the remainder theorem, the remainder will be -2 and the relationship between f(x) and x + 2 is an inverse relationship.

The remainder theorem is used to determine the remainder where a polynomial is divided by a binomial.

The remainder theorem states that if a polynomial p(x) is divided by a binomial x - a, the remainder of the division is p(a).

Given the following division, f(x)/ x + 2

We can rewrite the binomial in this form:

x + 2 = x - (-2)

The division then becomes:

f(x)/ x - (-2)

From the remainder theorem, the remainder will be -2.

Therefore, the relationship between f(x) and x + 2 is an inverse relationship such that f(2) = -2

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