i need help with this fast pls

Answer:

A, B, E

Step-by-step explanation:

The slope is the same (1/4x)

it is a translation given the y intercept moved it 5 units

they are both positive

The equation in standard form of the line that represents the number of rooms left to clean, y, after x hours is:

-4x + 7y = 28

Let's start by finding the rate at which Martin is cleaning the rooms. We can do this by dividing the number of rooms left to clean by the number of hours it takes to clean them:

rate = (number of rooms left) / (time to clean them)

rate = 4 / 7

Now we can use the point-slope form of the equation of a line to find the equation that represents the number of rooms left to clean, y, after x hours:

y - y1 = m(x - x1)

where m is the slope of the line and (x1, y1) is a point on the line.

We know that the slope of the line is equal to the rate at which Martin is cleaning the rooms, so m = 4/7. We also know that when x = 0, there are 4 rooms left to clean, so (x1, y1) = (0, 4).

Now we can substitute these values into the point-slope form of the equation to get:

y - 4 = (4/7)(x - 0)

Simplifying this equation, we get:

7y - 28 = 4x

Finally, we can rearrange this equation into standard form by moving the x term to the left side:

-4x + 7y = 28

Therefore, the equation in standard form of the line that represents the number of rooms left to clean, y, after x hours is 4x - 7y = -28.

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Step-by-step explanation:

A o option

-(-45)

hope it helps

(a) An Operating Characteristic (OC) curve is prepared for a single sampling plan with a lot size of 3,000, sample size of 89, and acceptance number of 2. The curve shows the probability of accepting a lot for different levels of incoming quality.

(b) To find the common point on the OC curve for a family of sampling plans that meet the Average Outgoing Quality Limit (AOQL) and 100% stipulation, specific values for AOQL and incoming quality need to be provided.

(a) To prepare the OC curve for the given single sampling plan, we calculate the probabilities of acceptance for various levels of incoming quality. The OC curve shows the relationship between the probability of accepting a lot and the fraction defective in the lot. This is done by calculating binomial probabilities based on the given lot size, sample size, and acceptance number.

(b) To find the common point on the OC curve for a family of sampling plans that meet the AOQL and 100% stipulation, we need to know the specific values for AOQL (Average Outgoing Quality Limit) and incoming quality. Without these values, it is not possible to determine the exact common point on the OC curve. The common point represents the level of incoming quality at which the AOQL requirement is met for all sampling plans in the family, while maintaining 100% stipulation. To find this point, one would need to calculate the probabilities of acceptance for different levels of incoming quality for each sampling plan in the family and identify the point at which the AOQL requirement is satisfied for all plans.

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Answer:

266.2

Step-by-step explanation:

area of triangle = 1/2bh

Area of side A = 1/2(13)(9.4) = 61.1

Area of side B = 1/2(6)(11) = 33

Area of base C = 78

There are 2 side As and 2 side Bs

Total surface area = 2A + 2B + C = 2(61.1) + 2(33) + 78 = 266.2

Answer:

The ? represents the number 38 because the average rate of change on every interval of the function is 3

Step-by-step explanation:

Firstly, we calculate the average rate of change over a function can be calculated using the formula below;

f(b) -f(a)/(b-a)

Now, over the interval [-2,2]

we have;

(17-5)/(2/(-2)) = 12/4 = 3

This is expected to be the blanket average rate of change

Thus, we have it that over the interval [5,9]; we have;

3 = f(b) - 26/9-5

3 = f(b) - 26/4

4(3) = f(b) - 26

12 = f(b) - 26

f(b) = 12 + 26

f(b) = 38

Answer: 0-10

1-9

2-8

Step-by-step explanation:

Answer:

C. The scale factor is less than one.

Step-by-step explanation:

By definition, similar triangles have equal angles and proportional corresponding side lengths. Thus, A, B, and D are all mutually exclusive, leaving C the only possible answer. Upon further inspection, the scale factor is indeed greater than one (each side length is scaled by a factor of two, which is large than one)

The required wrapping area will be used is 18 ft², as per the given conditions

The surface area of any shape is the area of the shape that is faced or the Surface area is the amount of area covering the exterior of a 3D shape.

Here,
Bernie bought a roll of wrapping paper that contains 90 ft.²
he’s going to wrap five identical boxes for five nieces.
So as the boxes are identical implies that the total wrapping paper 90 ft.²  will be divided into 5 equivalent areas so,
= 90 / 5
= 18 ft²

Thus, the required wrapping area will be used is 18 ft².

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Answer:

20l 10w or it could be the other way around

The greatest area of water she can enclose is 2500 m².

A rectangle is a 2-dimensional quadrilateral with four right angles.

Perimeter of a rectangle = 2 x (length + width)

Area of a rectangle = length x width

In order to determine the greatest area of water the lifeguard can enclose, we have t determine the sum of the dimensions.

200m = 2( l + b)

l + b = 200m / 2

l + b = 100m

The second step is to determine the pair of dimensions that add up to 100.

90 x 10 = 900

80 x 20 = 1600

70 x 30 = 2100

60 x 40 = 2400

50 x 50  = 2500

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Answer:

x=15

Step-by-step explanation:

The cost of each item is $348 and $696 respectively

Let us assume that the cost of the coffee table is x

Then, the cost of the couch will be 2x

Since the total cost of both items is $1044, we can write:

x + 2x = 1044

Simplifying the equation, we get:

3x = 1044

Dividing both sides by 3, we get:

x = 348

This means that the cost of the coffee table is $348

The cost of the couch is twice that amount, which is $696.

Therefore, the cost of each item is $348 and $696 respectively.

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The mean of this sample of car prices can be calculated by adding all the prices and dividing by the total number of dealers:

($35,700 x 2) + ($35,900 x 1) + ($36,200 x 3) + ($37,400 x 2) + ($37,900 x 2) = $326,500

$326,500 / 10 dealers = $32,650 (mean price)

To calculate the standard deviation, we first need to find the variance:

1. Subtract the mean from each individual price:

($35,700 - $32,650) = $3,050
($35,700 - $32,650) = $3,050
($35,900 - $32,650) = $3,250
($36,200 - $32,650) = $3,550
($36,200 - $32,650) = $3,550
($36,200 - $32,650) = $3,550
($37,400 - $32,650) = $4,750
($37,400 - $32,650) = $4,750
($37,900 - $32,650) = $5,250
($37,900 - $32,650) = $5,250

2. Square each of these differences:

$3,050^2 = $9,302,500
$3,050^2 = $9,302,500
$3,250^2 = $10,562,500
$3,550^2 = $12,602,500
$3,550^2 = $12,602,500
$3,550^2 = $12,602,500
$4,750^2 = $22,562,500
$4,750^2 = $22,562,500
$5,250^2 = $27,562,500
$5,250^2 = $27,562,500

3. Add up all of these squared differences:

$9,302,500 + $9,302,500 + $10,562,500 + $12,602,500 + $12,602,500 + $12,602,500 + $22,562,500 + $22,562,500 + $27,562,500 + $27,562,500 = $167,052,500

4. Divide the total by the number of dealers minus 1 (this is called the sample variance):

$167,052,500 / 9 = $18,561,388.89

5. Take the square root of the sample variance to get the standard deviation:

√$18,561,388.89 = $4,307.17 (standard deviation)

So the mean price of this sample of car prices is $32,650 and the standard deviation is $4,307.17.

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The equation that he used to find n, the number of gallons of water he should remove is 3.52 / (22 - n) = 24 / 100. Option C is correct.

Functions are the relationship between sets of values. e g y=f(x), for every value of x there is its exists in a set of y. x is the independent variable while Y is the dependent variable.

Amount of ammonia in the solution 16%  x 22 gallons  =  3.52 gallons

The proportion of ammonia remains the same as the water evaporates, but the total composition of the solution is decreased by the amount of water that evaporates.

Quantity of ammonia = 3.52 gallons

Quantity of water after evaporation = 22 - n

Composition of ammonia after evaporation of water, 24% = 24/100

Now the percentage of ammonia after evaporates
Quantity of ammonia / Remaining water = 24%
3.52 / (22 - n) = 24 / 100

Thus, the equation that he used to find n, the number of gallons of water he should remove is 3.52 / (22 - n) = 24 / 100.

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Answer:

Step-by-step explanation:

See image

Answer:

- 5 41 /41

it is A

Step-by-step explanation:

This is the answer for plato users, I took the test btw

The value of sin(θ) is -5√41/41 because sin is negative in the fourth quadrant option (A) -5√41/41 is correct.

Trigonometry is a branch of mathematics that deals with the relationship between sides and angles of a right-angle triangle.

We have:

cos(θ) = 4√41/41

As we know cos is the ratio of the side adjacent to the angle to the hypotenuse.

cos(θ) = adjacent/hypotenuse

From the Pythagoras theorem:

hypotenuse² = opposite² + adjacent²

41² = opposite² + (4√41)²

After calculating:

opposite = √1025

opposite = -5√41  (because sin is negative in the fourth quadrant)

sin is the ratio of the opposite to hypotenuse:

sin(θ) = -5√41/41

Thus, the value of sin(θ) is -5√41/41 because sin is negative in the fourth quadrant option (A) -5√41/41 is correct.

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Answer:

(Answer

Step-by-step explanation:

deleted)

The amount of money in Iris's checking account can be modeled by a linear function of the form:

y = mt + b

where y is the amount of money in the account, t is the time (measured in years), m is the rate of interest, and b is the initial amount in the account.

In this case, we have m = 0.04 (since the interest rate is 4% per year) and b = 180 (since that's the initial amount in the account). Therefore, the linear function that models the amount of money in Iris's checking account at any time t is:

y = 0.04t + 180

For example, if t = 5 (years), then the amount of money in Iris's checking account is 0.04 * 5 + 180 = 198 dollars.

Answer:

2(4)-3+5

Step-by-step explanation:

8-3+5

13-3

10

Answer:

i would say a

Step-by-step explanation:

Answer:

Answer would be 18

Step-by-step explanation:

Dilation simply means to get bigger or larger. So in this case from point Y to point z is 6. We would take 6 and dilate it with a factor of 3 (which also means to multiply). When you multiply 6*3 you will end up with 18, and that is your answer

The cross product of the unit vectors j and k is i.

The cross product of two vectors a and b is defined as:

a x b = |a| |b| sin(theta) n

where |a| and |b| are the magnitudes of vectors a and b, theta is the angle between the two vectors, and n is a unit vector perpendicular to both a and b, with a direction given by the right-hand rule.

Here, j and k are unit vectors in the y and z directions, respectively. Since j and k are perpendicular to each other, the angle between them is 90 degrees, and the sin(theta) term in the cross product formula is equal to 1.

Thus, we have:

j x k = |j| |k| sin(90) n

Since j and k are unit vectors, their magnitudes are both equal to 1. Substituting these values into the equation above, we get:

j x k = 1 x 1 x 1 n = n

Therefore, the cross product of j and k is a unit vector n that is perpendicular to both j and k.

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Answer:

y = x + 2

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, 1) and (x₂, y₂ ) = (- 1, 2) ← 2 points on the line

m = \(\frac{2-1}{-1-(-2)}\) = \(\frac{1}{-1+2}\) = \(\frac{1}{1}\) = 1

The line crosses the y- axis at (0, 2 ) ⇒ c = 2

y = x + 2 ← equation of line

The total surface area of a cylinder of radius 4 cm and height of 8cm in terms of pie is 96π cm².

Surface area of cylinder  = 2πr(r + h)

where

Therefore,

height  = 8 cm

radius = 4 cm

Hence,

Surface area of cylinder  = 2 × π × 4 (4 + 8)

Surface area of cylinder  = 8π(12)

Surface area of cylinder  = 96π cm²

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Answer:

x = 4

Step-by-step explanation:

To find the zero let f(x) = 0 and solve for x , that is

- 12x + 48 = 0 ( subtract 48 from both sides )

- 12x = - 48 ( divide both sides by - 12 )

x = 4 ← zero of f(x)

Answer:

7

Step-by-step explanation:

7x-6=43

    +6  +6

7x=49

/7   /7

x=7

Answer: x=7

is the answer

In linear equation , A tree that is 50m tall and is transpiring roughly 90liters of water each day. So  0 calorie will the tree use to transpire this quantity of water .

What is linear equation explain with example?

What makes an equation linear?

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Answer:

look at the picture

Step-by-step explanation: