solve using substitution.
2x-3y
x+y=9

just so you know, I know the answer its (3,6). I just need the explanation on how to get that answer using substitution.

Answer:

Median = 0.67 Oz

Step-by-step explanation:

Answer:

3*8 = 24 and 5*4 = 20.

Step-by-step explanation:

Answer:31

Step-by-step explanation:

Answer:

Step-by-step explanation:

\(-12u-\left(-11u\right)-4u+7u-5u=14\\\\\mathrm{Apply\:rule}\:-\left(-a\right)=a\\-12u+11u-4u+7u-5u=14\\\\\mathrm{Add\:similar\:elements:}\:-12u+11u-4u+7u-5u=-3u\\-3u=14\\\\\mathrm{Divide\:both\:sides\:by\:}-3\\\frac{-3u}{-3}=\frac{14}{-3}\\\\Simplify\\u=-\frac{14}{3}\\\\u = -4\frac{2}{3}\)

Answer:

a. 66c per oz of cheese bought

b. 66x

Step-by-step explanation:

a. Looking at the graph you can see that the price of 1 oz of cheese is 66 cents. As the graph is a straight line it is seen that the price rises by 66 cents per oz bought.

b. We use the answer of 66 cents per oz of cheese and change the cents out for x, to be able to a y = mx + b equation and since it starts at 0 the b = 0.

Answer:

28

Step-by-step explanation:

What value of p makes both sides equal the same? P = 3

37 - 9 = 28

21 + 7 = 28

So line KE and BE both equal 28

Hope this helps, and have a good day :)!

The length line KE and BE both equal 28.

Option (B) is correct.

Find the length of KE.

Figure which is formed by two rays or lines that shares a common endpoint.

Given that:

Let the value of

P = 3

Put the value of P

37 - 9 = 28

21 + 7 = 28

So, line KE and BE both equal 28

Learn more about angle here:

https://brainly.com/question/17157680

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Answer:

Mean = 33.7

Median = 34.5

Mode = 34

Range = 33

After adding 26....

mean decreases by 0.7

median decreases by 0.5

mode is 34

range is 33

Step-by-step explanation:

mean = sum of all the data values/number of data values

= (18 + 19 + 20  + 34 + 34 + 35 + 37 + 42 + 47 + 51)/10
= 337/10
= 33.7

To find median arrange the values in increasing order, find the mid value

If the number of data points is even, find the average of the mid 2 data values

Arranging data values we get:
18, 19, 20, 34, 34, 35, 37, 42, 47, 51

Since there are 10 data values, take the average of the middle two:
(34 + 35)/2 = 34.5

The mode is the value that occurs most often. We see that there are two instances of 34 whereas the other values appear only once

Mode = 34

The range is highest - lowest = 51 - 18 = 33

After we add 26, we get the following data set arranged

18, 19, 20, 26, 34, 34, 35, 37, 42, 47, 51

we can calculate the stats using the same technique as above

We get the following values

mean = )(18 + 19 + 20 + 26 + 34 + 34 + 35 + 37 + 42 + 47 + 51)/11
= 33  

median = 34

mode = 34

range = 51-18 = 33

To find the decrease in mean and median subtract from the first set of values

Answer: See the diagram below

==========================================================

Explanation:

She starts off finding the mean of the data. So she adds up the values to get 48+54+57+62+69 = 290, and then divides by 5 to get the mean of 290/5 = 58. That explains why there's a 58 in the first row of the second column.

---------------------

For the next step, she subtracts 58 from each data item. If the result is negative, then go with the positive version (ie apply the absolute value)

This leads to the list 10,4,1,4,11 which goes in the first slot labeled "drag and drop an item here". This is the list of distance values each item is from the mean.

---------------------

The last thing to do is find the mean of the set {10,4,1,4,11}

add: 10+4+1+4+11 = 30

divide by five: 30/5 = 6

The mean absolute deviation (MAD) is 6

This represents the average distance each data value is from the mean.  The MAD tells us how spread out the data is. It's similar to the standard deviation.

Answer:Since the data values have a spread of 69 cm, intervals with a range of 10 to 20 cm are reasonable

Step-by-step explanationl:The data values have a range of 70 centimeters. Intervals with a range of 10-20 centimeters should be reasonable.

Answer:

\(5x^2 - x - 17\)

Step-by-step explanation:

Distribute the terms inside the first set of parentheses:

\((2x - 7)(x + 3) = 2x^2 + 6x - 7x - 21\)

Combine like terms:

\(= 2x^2 - x - 21\)

Simplify by adding the second part:

\(2x^2 - x - 21 - (-3x^2 - 4)\)

Subtracting a negative is the same as adding the positive equivalent:

\(= 2x^2 - x - 21 + 3x^2 + 4\)

Combine like terms:

\(= 5x^2 - x - 17\)

(2x-7)(x+3)-(-3x^[2] - 4)

====

5x^[2] -x -17

To begin simplifying this expression, we will foil the first half of it:

(2x-7)(x+3)

2x*x + 2x*3 - 7*x - 7*3

2x^[2] + 6x - 7x - 21

With this, we combine like terms:

2x^[2]-x-21

We now have

2x^[2]-x-21-(-3x^[2]-4)

We can now do the binomial distribution in the second half of the expression. Remember, the - sign in front of the parentheses means we are negating everything inside. In other words, we are multiplying -1 by everything inside the parentheses. Following this:

-(-3x^[2]-4) becomes

-1*-3x^[2] + -1*-4 = 3x^[2]+4

We have now simplified the first and second half of our expression, so we have:

2x^[2]-x-21+3x^[2]+4

And combining like terms we get

2x^[2]+3x^[2]-x-21+4 =

5x^[2] -x -17

We can use the quadratic expression to determine if the trinomial can be factored evenly, but it cannot so we have our final simplifed expression!

Answer: 5

Step-by-step explanation:

If the sides of A is (8,4) and the coordinates of D is (8-1), the same value in both coordinates are 8 and the different values are 4 (A) and -1 (D). We will take the absolute values (AV) of both when added: |4 + -1|.

The answer will be 5 grids (or whatever measurements the question uses).

Answer:

32.137 cm squared **Answer varies on how you round for step 2**

Step-by-step explanation:

**THIS ONLY WORKS IF DIAMETER IS ALSO 6 CM**

If the diameter is also 6 cm then the triangle would be isosceles .

1. Find the area of the triangle.

            Formula: (Base x Height) / 2

            = 6X6/2 = 18 cm squared

2. Find area of half-circle.

            Formula:  (πR^2)/2

            = (π X 3^2)/2 = 9π/2 which is about 14.137 cm squared

3. Add the areas.

            18 + 14.137 = 32.137 cm squared.

Answer:

37.5

Step-by-step explanation:

cosФ = \(\frac{A}{H}\)

cos(33°35') = \(\frac{m}{45}\)

m = 45 × cos(33°35')

m = 37.5 (1d.p.)

Answer: if you study and research you would be able to find the question yourself and not have people tell you which is cheating and not learning to your best.

- the truth is told

Step-by-step explanation: read that again

Answer:

Step-by-step explanation:

A

Answer: its A its the awnser A.

Answer:

Coefficients: 8

Constants: 2

Variables: m and n

Step-by-step explanation:

Sarah had made no errors-

A number on its own is called a Constant.

A coefficient is a number used to multiply a variable.

Answer:

true

Aristocracy is a form of government in which political power is held by a select few privileged people called aristocrats or nobles. Coming from a Greek word meaning “rule by the best,” aristocrats are considered the most qualified to rule because of their moral and intellectual superiority.

Answer:

16p-100

Step-by-step explanation:

All we have to do is evaluate this expression.

The first step is to distribute -10 among the numbers in the parenthesis:

20p-100

We got 20p-100 from first multiplying -10 to -2p, which the negatives would cancel out and get 20p, and -10 multiplied by 10, which gets you -100

The next step is to subtract the 4p from the entire expression:

20p-100-4p

Or, we can rearrange this expression to make it clearer: 20p-4p-100

=16p-100

Hope this helps :)

Answer:

\(y=\frac{5}{2}x\)

Step-by-step explanation:

\(\frac{rise}{run}\)

The point is up 5 and went 2 to the right. We can use the equation rise over run to solve for the slope.

Answer:

multiply each number together

Answer:

2t³

Step-by-step explanation:

For this problem, we are dividing 16t⁴ by 8t. First, we should separate both of these terms into parts we can work with individually. So, we can easily divide 16 by 8, and we can also easily divide t⁴ by t. After solving each of these smaller problems we can get our solution.

First, 16 divided by 8 is 2. This is the first part of our answer. t⁴ divided by t is t³; this is because when dividing terms with the same base, we can subtract the exponents to get the final exponent. The exponent for t⁴ is 4, and the exponent for t is an invisible 1 (t = t¹). 4 - 1 = 3, so t⁴ divided by t is t³.

Putting those two answers together gives us 2t³.

Answer:

$93.75

Step-by-step explanation:

The formula for finding original prices is o = s over 1 - d, in which o is the original price, s is the sale price, and d is the discount. Let’s go ahead and plug our numbers in: o = 75 over 1 - 0.2. (Remember 20% equals 20 ÷ 100.)

75 over 1 - 0.2 equals 75 over 0.8. Now we find out how much that is in whole numbers. 75 ÷ 0.8 = 93.75, o.

Answer:

c. 2/13

Step-by-step explanation:

The bag starts with 8 red marbles, 4 green marbles, and 2 yellow marbles. Since he draws a red marble from the bag and does not replace it, there will be one less marble.

So now there are 7 red marbles, 4 green marbles, and 2 yellow marbles. Add the number of marbles together and then find the probability of drawing a yellow marble.

7+4+2 = 13

2/13

So the probability of Bill drawing a yellow marble would be 2/13.

Answer:

f(3) = -10

Step-by-step explanation:

The formula given is f(n) = f(n − 2). f(n - 1)

For the first term in the quotient:

if n = 3 then substitute the result of f(3 − 2) = f(1) spot, which is given by the number -2.

for the second term in the quotient:

if n = 3 then substitute the result of f(3 − 1) = f(2) spot, which is given by the number 5.

Now combine this and you get:

f(3) = -2 * 5

f(3) = -10

Color 5 - 2 Black-and-White

Color 10 - 4 Black-and-White

Color 15 - 6 Black-and-White

Color 20 - 8 Black-and-White

Color 25 - 10 Black-and-White

Color 30 - 12 Black-and-White

Answer:

Colored photo           I           Black photo

5                                                               2

10                                                              4

15                                                              6

20                                                             8

25                                                            10

30                                                            12

35                                                            14

40                                                            16

45                                                            18

50                                                           20

Answer:

v=-1/2

Step-by-step explanation:

v=u+at

v=2+(-5*1/2)

v=2-5/2

v=4-5/2

v=-1/2

Answer:

D... I think it seems less likely to happen.

Step-by-step explanation:

Answer:

C is the answer

Step-by-step explanation:

Answer A has 7 possibilities

Answer B has 7 possibilities

Answer C has 5 possibilities

Answer D has 8 possibilities

It is least likely to happen.

For question 6 the answer is 91 just add the numbers

Answer:

only 1

Step-by-step explanation: I just did the test and i got an A+!!

You are so very welcome!!

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