Given: -4x + 2y = 8
Prove: y = 4 + 2x​

Answer:

I cant figure it out, sorry :(

156 short sleeve shirts were sold in Emily's clothing store during the given period.

To determine the number of short sleeve shirts sold in Emily's clothing store, we need to calculate 3/10 of the total number of shirts sold, since the ratio of short sleeve to long sleeve shirts is 3:7.

We know that the total number of shirts sold is 520. To find 3/10 of 520, we multiply 520 by 3/10:

3/10 * 520 = (3/10) * 520 = (3 * 520) / 10 = 1560 / 10 = 156

Therefore, 156 short sleeve shirts were sold in Emily's clothing store in August.

Alternatively, we can solve this problem using proportions. If we set up the proportion:

(3/10) = x/520,

where x represents the number of short sleeve shirts sold, we can cross-multiply to find:

10x = 3 * 520,

10x = 1560,

x = 156.

Hence, 156 short sleeve shirts were sold in Emily's clothing store during the given period.

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Answer:

C - 10

Step-by-step explanation:

I did the quiz and this is what I got, it said I was right.

Answer:

Answer:

c-10

Step-by-step explanation

the person above's right

Answer:

k = 30

Step-by-step explanation:

an equation of proportionality has the form

y = kx ← k is the constant of proportionality

y = 30x ← is in this form

with k = 30

Answer:

Luna wanna play among us with me (sorry I’m bored) the code is: PXQMKF

Step-by-step explanation:

Answer:

m=3/5 rise:3 run:5

Step-by-step explanation:

Amount they will earn=Principal+Interest

Interest=$1200×0.12×7=$1008

Amount=$(1200+1008)=$2208

The compound inequality describes the possible lengths for the third side, x is -4< c< 14.

A triangle is a three-sided polygon that is sometimes (but not always) referred to as a trigon. Every triangle has three sides and three angles, with some of them being the same.

A triangle with A, B, and C vertices is symbolized by ΔABC

The Triangle Inequality Theorem states that given two triangle side lengths, the length of the third side must be greater than the difference and less than the sum of the two provided sides. The third side c of a triangle must be the same as the first two sides a and b:

(a - b) < c < (a + b)

As a result, let a = 5 and b = 9

(5-9) <c (5+9)

-4< c< 14

As a result, the third side of the triangle must follow the inequality, which is -4< c <14

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Answer: The area is 20

Answer:

Aoc+Box=180°{ supplementary angles}

or,120+Box=180°

or,Box=180-120

hEnCE Box= 60°

Answer:

150.09

Step-by-step explanation:

0.1  = 1/10 + 149.99=  150. the leftover of 0.09 then is finally added to 150 which then you get 150.09  


Please mark brainliest!

Answer:

The answer should be 150.09  

Step-by-step explanation:

Adding one tenth to 149.9 will equal 150. The remaining 0.09 will be added to 150 and the final answer is 150.09

Hope This Helps
Have A Great Day

~Zero~

Answer:

I think it is 420 people

Step-by-step explanation:

Answer:

10 ways

Step-by-step explanation:

Here, we want to calculate the number of ways in which the selection can be made

We have this as follows;

Since we have style starting line up already, it means a choice of 5 has been made from the 13 already. What is left is to make a selection of 3 from 5

To do this, we simply apply the combination formula

that would be;

5 C 3 = 10 ways

Answer:

\(y\geq 0\\y\geq \frac{3}{2}x-3\\ y\leq -x+3\)

Step-by-step explanation:

The region R is surrounded by 4 lines, the first one is y=x+1, the second one is y=0 or the axis x, and the third and fourth one need to be calcualted.

To find the equation of a line through the points (x1,y1) and (x2, y2) we can use the following equation:

\(y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)\)

Then, our third line is going to be the line that passes through the points (2,0) and (4,3), so the equation is:

\(y=\frac{3-0}{4-2}(x-2)\\y=\frac{3}{2}x-3\)

Our fourth line is the line that passes through the points (3,0) and (0,3), so the equation is:

\(y=\frac{3-0}{0-3}(x-3)\\y=-x+3\)

Then we can say that the other three inequalities are:

\(y\geq 0\\y\geq \frac{3}{2}x-3\\ y\leq -x+3\)

The domain of f(x,y) = \(e^(-x^2-2y^2)\) is all real numbers for x and y. The range of f is (0,1] because the function is always positive and approaches zero as x and y approach infinity.

To find the domain of f(x,y), we need to identify any values of x and y that would make the function undefined. However, since f(x,y) is defined for all values of x and y, the domain is all real numbers for x and y.

Next, to find the range of f, we need to determine the set of possible output values of the function. Notice that \(e^(-x^2-2y^2)\) is always positive since e raised to any power is positive and \(x^2\) and \(2y^2\) are non-negative. Also, as x and y approach infinity, the function approaches zero. Therefore, the range of f is (0,1] because the function can take any positive value less than or equal to 1 but cannot reach zero.

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Answer:

Given ABCD ~ EFGH

FG = BC(EF/AB)

FG = 7(9/6)

FG = 63/6

FG = 10.5

GH = CD(EF/AB)

GH = 11(9/6)

GH = 99/6

GH = 16.5

EH = AD(EF/AB)

EH = 12(9/6)

EH = 108/6

EH = 18

Answer:

.

Step-by-step explanation:

.

Answer:

b = 9 cm

Step-by-step explanation:

the area (A) of a triangle is calculated as

A = \(\frac{1}{2}\) bh ( b is the base and h the height )

here h = 2b , then

\(\frac{1}{2}\) × b × 2b = 81

\(\frac{1}{2}\) × 2b² = 81

b² = 81 ( take square root of both sides )

b = \(\sqrt{81}\) = 9 cm

Answer:16

Step-by-step explanation:

The shape of the cross section is a triangle. It is always triangle if the triangular pyramid sliced from any side perpendicularly to its base. See the picture in the attachment!

A pyramid is a polyhedron that has one base and lateral faces with the vertex at the top of the pyramid. The shape of lateral faces is always a triangle. While, the shape of the base varies and is used to name the pyramid.

A triangular pyramid is a pyramid with a triangular base. It has three lateral faces.

If a triangular pyramid is sliced by a plane from any side that is perpendicular to its base, the cross section formed will be a triangle. One line is at the base and two lines are at the lateral faces. See the picture in the attachment!

Hence, the cross section formed by the slicing is a triangle.

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Answer:

162

Step-by-step explanation:

8x 12 + 6x 11 = 162

Answer:

The ratio of apples to oranges in the basket is 2:5.

Step-by-step explanation:

the answer is D

Step-by-step explanation:

Total fruit (apples + oranges ) = 125

only oranges = 7/25 of total fruit = (7/25)× 125

7×5= 35 (orange)

then only apples = 125 - 35 = 90

2:5

answer:

the question is confusing but the answer is 2010

step-by-step explanation:

because in the year 2000 it was

260

then increased by

60

over 5 years making the next class

320

then in 2010 it was

400

and 320 + what is 400?

80

so the answer is:

2010

In the year 2010 the high school graduating class experience the greatest experience of change.

Finding the difference between two numbers is done using the subtraction technique. The size of a group of things decreases if any of the objects are removed.

For instance, at your birthday celebration, you purchased 9 cupcakes, of which your friends consumed 7. There are only 2 cupcakes remaining for you now. Nine minus seven equals two, which may be represented as the subtraction expression 9 - 7 = 2. (9 - 7) = 2 is the result of subtracting 7 from 9.

According to the question, the given values are :

There are 260 people in the graduating class in 2000, then it increased by 60.

5 years later the people class in the class was 320.

Then in the year 2010, it was 400.

So, the difference between 400 and 320 is 80.

Hence, this concludes that the greatest change will occur in 2010.

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Answer: $262.50

Step-by-step explanation:

MSE = ((Actual - Forecast)^2) / Number of Observations = ((13 - 17)^2 + (17 - 11)^2 + (11 - 6)^2 + (6 - 5)^2 + (5 - 4)^2 + (4 - 16)^2 + (16 - 14)^2 + (14 - 18)^2 + (18 - 3)^2) / 9 = 382 / 9 ≈ 42.44.

To calculate the forecast accuracy measures, we need to use the naive method, which assumes that the forecast for the next week is equal to the most recent observed value. Given the time series data: Week: 1 2. Value: 3 18 14 16 4 5 6 11 17 13 A. Mean Absolute Error (MAE): The MAE is calculated by finding the absolute difference between the forecasted value and the actual value, and then taking the average of these differences. MAE = (|Actual - Forecast|) / Number of Observations = (|13 - 17| + |17 - 11| + |11 - 6| + |6 - 5| + |5 - 4| + |4 - 16| + |16 - 14| + |14 - 18| + |18 - 3|) / 9 = 60 / 9 ≈ 6.6. B. Mean Squared Error (MSE): The MSE is calculated by finding the squared difference between the forecasted value and the actual value, and then taking the average of these squared differences. MSE = ((Actual - Forecast)^2) / Number of Observations = ((13 - 17)^2 + (17 - 11)^2 + (11 - 6)^2 + (6 - 5)^2 + (5 - 4)^2 + (4 - 16)^2 + (16 - 14)^2 + (14 - 18)^2 + (18 - 3)^2) / 9 = 382 / 9 ≈ 42.44.

C. Mean Absolute Percentage Error (MAPE): The MAPE is calculated by finding the absolute percentage difference between the forecasted value and the actual value, and then taking the average of these percentage differences. MAPE = (|Actual - Forecast| / Actual) * 100 / Number of Observations = (|13 - 17| / 13 + |17 - 11| / 17 + |11 - 6| / 11 + |6 - 5| / 6 + |5 - 4| / 5 + |4 - 16| / 4 + |16 - 14| / 16 + |14 - 18| / 14 + |18 - 3| / 18) * 100 / 9 ≈ 116.69. D. Forecast for Week 7: Since the naive method assumes the forecast for the next week is equal to the most recent observed value, the forecast for Week 7 would be 13 (the value observed in Week 6).

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This means that the average cost of selected automobiles has increased by 16% between the two years.

Given data: The average cost of selected automobiles in 2019 = $15,000

The average cost of selected automobiles now (current year) = $17,400

Let's calculate the rate of increase in the average cost of the automobile between the two years.

To find the rate of increase, use the following formula;
rate of increase = increase in value / original value * 100

To get the increase in the value of selected automobiles, subtract the current year's average cost of selected automobiles from the previous year's average cost of selected automobiles.

i.e. increase in value = current year's average cost - previous year's average cost

= $17,400 - $15,000

= $2,400

Now put the values in the formula to get the rate of increase;

rate of increase = increase in value / original value * 100

= 2400 / 15000 * 100

= 16

Therefore, the rate of increase for selected automobiles between the two time periods is 16%.

It's essential to note the rate of increase or decrease in the value of products or services. It helps in decision making, future predictions, etc.

The above question deals with finding the rate of increase in the cost of selected automobiles. To get the rate of increase, the formula rate of increase = increase in value / original value * 100 is used.

To get the increase in the value of selected automobiles, subtract the current year's average cost of selected automobiles from the previous year's average cost of selected automobiles. i.e. increase in value = current year's average cost - previous year's average cost.

The value of selected automobiles was $15,000 in 2019, and now it is $17,400.

Now, the rate of increase in the average cost of automobiles can be found using the formula rate of increase = increase in value / original value * 100.

Put the values in the formula to get the rate of increase.

Therefore, the rate of increase for selected automobiles between the two time periods is 16%.

It indicates that if a person had bought an automobile in 2019 for $15,000, he has to pay $17,400 for the same automobile now.

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Answer:

Rectangle.

Step-by-step explanation:

The 2 dimensional section would be a rectangle.

Answer:

rectangle

Step-by-step explanation:

Answer:

18

Step-by-step explanation:

18 is the correct answer

Answer:  -6/5

Step-by-step explanation:  Graph the ordered pairs, then count the squares directly underneath until you get to the -6 point. When you are on the line of -6 the go right until you reach the -6 point. Count how many squares you hit doing that and put the up or down number on top and then put the left or right number on bottom.  (If you go down on the rise part of the equation then it would be negative, if you go left on the run part of the equation then it would also be negative, everything else is positive.)