Solve the following equation systems using the elimintation mathod
2y - x = 8
-3x + 2y = -12

Answer:

$9.10

Step-by-step explanation:

you just need to multiply 6.50 by 2 and then take 30% off of it which is 9.10

Answer:

The mean absolute deviation is 4

Interpertation: The average distance between each data value and the mean is 4 which is the variation in the data set so you can understand how "spread out" each data point is from each other

Step-by-step explanation:

The mean absolute deviation is a measure of how much a data set varies.

Step 1: Compute the mean

mean = the sum of all the terms / number of terms

mean = 94 + 86 + 95 + 99 + 88 + 90 / 6

        = 552 / 6

        = 92

The mean is 92

Step 2: Finding the absolute deviation

You would take each number in the data set and subtract it from the mean, take the absolute value. After you take the sum of the absolute data values

|data set #1 - mean| + |data set #2 - mean| + ... + |data set #6 - mean|

= |94 - 92| + |86 - 92| + |95 - 92| + |99 - 92| + |88 - 92| + |90 - 92|

= |2| + |- 6| + |3| + |7| + |- 4| + |- 2|

= 2 + 6 + 3 + 7 + 4 + 2

= 24

To find the mean absolute deviation you divided the sum by total number of terms...

24/6 = 4

The average (mean) is equal to the sum of all the data values divided by the count of values in the data set (which was step 1)

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Answer:

Step-by-step explanation:

To find the circumference of a circle, we use the formula:

Circumference = 2 * π * radius

Let's calculate the circumferences for the given options

1. Circumference = 2 * 3.14 * 53 ≈ 333.64 cm

2. Circumference = 2 * 3.14 * 227 ≈ 1428.28 cm

3. Circumference = 2 * 3.14 * 20 ≈ 125.6 cm

4. Circumference = 2 * 3.14 * 27 ≈ 169.56 cm

now, rounding each value to the nearest unit , we get

1. Circumference ≈ 334 cm

2. Circumference ≈ 1428 cm

3. Circumference ≈ 126 cm

4. Circumference ≈ 170 cm

Answer:

1872 ft.²

Step-by-step explanation:

First lets figure out all of the easy shapes:

The bottom one: 8 * 7 = 56

The one on the left: 5 * 8 = 40

The one of top: 8 * 3 = 24

The slanted rectangle: 5 * 8 = 40

The small rectangle below that : 2 * 8 = 16

Now we just have the polygon facing toward us. It can be broken up into 2 parts:

The lower half: 2 * 7 = 14

Imagine a line going from the top of the line marked "2" straight across to the other side. That is the bottom half. Now we are left with a trapezoid. The formula for the area of a trapezoid is as follows:

A = ((a + b) / 2) * h

What this means is that we had the top and bottom of the figure, divide that by 2, and multiply it by the height. That can be shown here:

(3 + 7) / 2 = 5 * 3 = 15

15 is the area of the trapezoid. Now we can combine that with 14 to get the total area of the polygon:

14 + 15 = 29

Then do the same again for the other identical figure

14 + 15 = 29

Now we have all the areas of our shapes. Let's add them up:

56 + 40 + 24 + 40 + 16 + 29 + 29 = 234

234 is the total surface area of the box. Since there are 8 boxes, multiply this by 8 to get your final answer:

234 * 8 = 1872 ft.²

Don't forget to include units!

The solution is : 1872 ft.² of the new material is needed to build all 8 containers.

Area is the measure of a region's size on a surface. The area of a plane region or plane area refers to the area of a shape or planar lamina, while surface area refers to the area of an open surface or the boundary of a three-dimensional object.

here, we have,

given that,

First lets figure out all of the easy shapes:

The bottom one: 8 * 7 = 56

The one on the left: 5 * 8 = 40

The one of top: 8 * 3 = 24

The slanted rectangle: 5 * 8 = 40

The small rectangle below that : 2 * 8 = 16

Now we just have the polygon facing toward us. It can be broken up into 2 parts:

The lower half: 2 * 7 = 14

Imagine a line going from the top of the line marked "2" straight across to the other side. That is the bottom half. Now we are left with a trapezoid. The formula for the area of a trapezoid is as follows:

A = ((a + b) / 2) * h

What this means is that we had the top and bottom of the figure, divide that by 2, and multiply it by the height. That can be shown here:

(3 + 7) / 2 = 5 * 3 = 15

15 is the area of the trapezoid. Now we can combine that with 14 to get the total area of the polygon:

14 + 15 = 29

Then do the same again for the other identical figure

14 + 15 = 29

Now we have all the areas of our shapes. Let's add them up:

56 + 40 + 24 + 40 + 16 + 29 + 29 = 234

234 is the total surface area of the box.

Since there are 8 boxes, multiply this by 8 to get your final answer:

234 * 8 = 1872 ft.²

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Answer:

Try this formula: length x width x height then you will find the answe. Hope this helps!  

Answer:

189

Step-by-step explanation:

volume = length × width × height

volume = 9 in. × 7 in. × 3 in.

volume = 189 in.³

Answer:

B) [tex]45\pi cm^{2}[/tex]

Step-by-step explanation:

[tex]A=\frac{\pi r^{2}(central. Angle) }{360} =\frac{\pi (9)^{2}(200) }{360} =\frac{\pi (81)(200)}{360}=45\pi cm^{2}[/tex]

Hope this helps

7 because it's the opposite of -7 hope it helped

Answer:

|7|

Step-by-step explanation: Hopefully that is the correct answer and give brainliest to the other people that answer first.

Answer: 72

Step-by-step explanation:

I counted one of the sides then took all of the answers and divided it by 12

Answer: 70

Step-by-step explanation: so first you cout all of the whole squares and then you add up all the portions of squares. hope this helps/ let me know if wrong

Answer:

gamma

Step-by-step explanation:

Answer: H- The sum of any number and its opposite is 0

Step-by-step explanation:

Answer:

the answer is F

Step-by-step explanation:

because the absolute value of 32 is larger

you imagine 32+9= 41 yeah?

now imagine -32+4=-28

Answer:

It’s the last one b=50v

Step-by-step explanation:

Answer:

v = 50b

Step-by-step explanation:

The only other answer that could be correct is b = 50v. It is wrong because it's saying the number of bottles equals 50 times the number of vitamins, which doesn't make sense. v = 50b makes sense because it's saying the number of vitamins are 50 times the amount of bottles.

Answer:

Mean is 43.8

Step-by-step explanation:

add all of the numbers to get 1314. then divide by 30, the amount of numbers shown on the plot. Once divided, you'll get 43.8

Answer:

x = 3

(3, 13)

Step-by-step explanation:

Given equations:

Solve by substitution:

⇒ y = y

⇒ 7x - 8 = 5x - 2

Subtract 5x from both sides:

⇒ 7x - 8 - 5x = 5x - 2 - 5x

⇒ 2x - 8 = - 2

Add 8 to both sides:

⇒ 2x - 8 + 8 = - 2 + 8

⇒ 2x = 6

Divide both sides by 2:

⇒ 2x ÷ 2 = 6 ÷ 2

⇒ x = 3

To find the y-value of the point of intersection, substitute the found value of x (from part A) into one of the equations:

⇒ y = 7(3) - 8

⇒ y = 21 - 8

⇒ y = 13

Therefore, the point at which the lines intersect is (3, 13)

Answer:

the first box

fourth box

fifth box and last box

Step-by-step explanation:

Answer:

option C and D are correct.

Step-by-step explanation:

A rectangle and a parallelogram has two pairs of parallel sides

A rectangle and a parallelogram also has two pairs of sides with equal lenght

Answer:

By selling a watch in Rs 150 and Rs 200, loss and profit are seen respectively. If the loss and profit are equal, find its cost price.

Answer:

F. 1080

Step-by-step explanation:

Just like any shape, we get to do base x height! If you haven't located the base yet it's the right triangles. So first we have to find the area of the triangle and then multiply by the height (20). Lets find the area of the triangle first. To get the area you do (length x width)/2. 9*12/2=54. Now 54*20=1080

Answer:

51

Step-by-step explanation:

x+14=65

65-14=x

x=51

She used 51 inches of wire

Answer:

A represents exponential decay since it's the only answer with an exponent greater than 1.

The inequalities (x≥-13)\ ,(x ≤25)  ,(x < 85) ,(x > -65) ,( x > 180) in the graph.

The relation between two expressions that are not equal, employing a sign such as ≠ ‘not equal to’, > ‘greater than’, or < ‘less than’.

Here we have the different graphs which shows the inequality and the some inequaliies are not shown in the graph.

The inequality not shown in the graph are:-

(x≥-13)

(x ≤25)

(x < 85)

(x > -65) ,

( x > 180)

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Answer: Mary makes $1160, Steven makes $142.50

Step-by-step explanation:

Facts

MARY

8% commision on everything she sells

She sells a car for $14,500

The first question about Mary asks how much commision she makes. To find that, lets find 8% of 14,500

8% of 14,500= 0.08x14,500= 1160

Therefore, Mary makes $1,160 in commision.

STEVEN

Facts

He makes 15% in commision for the supplies he sells

He sells $950 in supplies

Money made =?

15% of 950=0.15x950=$142.50

Answer:I’m pretty sure it’s 95 I’m sorry if that’s wrong

Step-by-step explanation:

Using it's concept, it is found that there is a 0.96 = 96% probability of the next elk caught being unmarked.

A probability is given by the number of desired outcomes divided by the number of total outcomes.

In this problem, 5625 - 225 = 5500 elks out of a total of 5625 are unmarked, hence the probability is given by:

p = 5500/5625 = 0.96.

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