7. What is the value of z in the solution to the systems of linear equations shown below?
-x+ 2y + 2z= -4
4x +y-3z=13
x- 5y +z = -23

Answer:

1st,2nd,4th,

Step-by-step explanation:

You have to divide the price by the numbers of items!

Answer:

It's A,B,D

Hence, 1 tote bag, 1 picture frame and 1 mug cost under $2.25.

Step-by-step explanation:

Answer:

=100.53

Step-by-step explanation:

Answer:

b) 20, a) 14, c) 28, d)10

Step-by-step explanation:

b) 2a +3b ; a=7 and b=2

   2(7) + 3(2)

  14 +6

  20

a) ab

   (7)(2)

   14

c)2ab

  2(7)(2)

   14(2)

   28

d) (a-b)2

   2a-2b

   2(7)-2(2)

   14-4

   10

I was a bit confused at the question, but those were the answers that I got and the work that follow. Hope this helps! Good luck.

Answer:

7 hours

Step-by-step explanation:

take the original distance traveled to find the speed traveled and take the new distance to travel devided by the speed 325÷5=65 455÷65=7

Answer:

10 headbands = $12.50

Step-by-step explanation:

1) The function equation that represents the relationship between the number of headbands sold (x) and the commission earned (S) is: S = 1.25 * x. For each headband sold, you earn a commission of $1.25.

2) The point (5, 6.5) is not a solution for the function. When you sell 5 headbands, the commission earned should be $6.25, not $6.5.

3) A solution that does not appear in the table is (10, 12.50). Selling 10 headbands would result in a commission of $12.50.

1.

To complete the table, we can use the given information that for each headband sold, you earn a commission of $1.25.

Function Rule (Commission S): The function equation that represents the relationship between the number of headbands sold (x) and the commission earned (S) is:

S = 1.25 * x

Now, we can use this function to fill in the table:

Number of Headbands Sold (x) | Commission (S)

0 | 0 * 1.25 = $0 (No commission earned for 0 headbands sold)

1 | 1 * 1.25 = $1.25

2 | 2 * 1.25 = $2.50

3 | 3 * 1.25 = $3.75

7 | 7 * 1.25 = $8.75

15 | 15 * 1.25 = $18.75

32.50 | 32.50 * 1.25 = $40.625 (The value in the table seems to be a typo, it should be 32.50 * 1.25 = $40.625)

2.

To check if (5, 6.5) is a solution for the function, we need to see if the commission earned (S) matches with the given number of headbands sold (x) for that point.

Given (x, S) = (5, 6.5)

Using the function rule: S = 1.25 * x

S = 1.25 * 5 = 6.25

The commission earned (S) is $6.25, not $6.5. Therefore, (5, 6.5) is not a solution for the function as the value of S does not match.

3.

To identify a solution that does not appear in the table, we can select any number of headbands sold (x) and calculate the corresponding commission (S) using the function rule.

For example, let's choose x = 10:

Using the function rule: S = 1.25 * 10 = $12.50

So, a solution that does not appear in the table is (10, 12.50), where 10 headbands sold results in a $12.50 commission.

Learn more about Function Rule from the link given below.

https://brainly.com/question/10705186

#SPJ2

Answer:

Step-by-step explanation:

A. Senators have to have been a U.S. citizens for nine years prior to being elected; members of the House of Representatives must be American citizens for seven years before being elected.

C. Senators and members of the House of Representatives must live in the state they represent.

D. Senators must be at least 30 years old; members of the House of Representatives must be at least 25.

First, according to the information, we build a linear model, and then, the model is used to find the information asked.

a) The linear model is:

[tex]V(t) = 224000 - 6800t[/tex]

b) The depreciated value of the boat after 10 years is of $156,000.

c) The depreciated value falls below $100,000 after 18.24 years.

d) The sketch is given at the end of the answer.

Item a:

[tex]m = \frac{115200 - 224000}{16} = -6800[/tex]

Then, the linear model is:

[tex]V(t) = 224000 - 6800t[/tex]

Item b:

The value after 10 years is V(10), so:

[tex]V(10) = 224000 - 6800(10) = 156000[/tex]

Then, the depreciated value of the boat after 10 years is of $156,000.

Item c:

This is t for which: V(t) = 100000. So

[tex]V(t) = 224000 - 6800t[/tex]

[tex]100000 = 224000 - 6800t[/tex]

[tex]6800t = 224000 - 100000[/tex]

[tex]6800t = 124000[/tex]

[tex]t = \frac{124000}{6800}[/tex]

[tex]t = 18.24[/tex]

The depreciated value falls below $100,000 after 18.24 years.

Item d:

The sketch is appended at the end of this answer.

A similar problem is given at https://brainly.com/question/24978772

Answer: 15 stickers

Step-by-step explanation: 5*5=25         40-25=15

Answer:

522.87

Step-by-step explanation:

15*40=600

22.5*10=225

825*24.5%=202.13

825-100-202.13=522.87

Answer:

Hello! I can help you with it :)

Well, I do not know where you live, so I do not know what nooks and crannies your hm could be hiding.

9514 1404 393

Answer:

  x = 57

Step-by-step explanation:

Where parallel lines are crossed by a transversal, all obtuse angles are congruent and supplementary to all acute angles, which are also congruent.

  x = 180 -123

  x = 57

Answer:

y=-2/5x-1

Step-by-step explanation:

I started by looking for the y-intercept of the line, where the line intersects with the y-axis and saw it was -1.

Then I looked at the slope of the line and used the rise/run strategy. From the y-intercept to the point it was 2 units down and 5 units across (2/5) and since it is going down it's negative

Plugging it in: y=mx+b

m=slope

b=y-intercept

y=-2/5x-1

Hope this helps :)

Answer:

876

Step-by-step explanation:

2 3 - 3  / 23- sa

9514 1404 393

Answer:

  3x +4

Step-by-step explanation:

Polynomial long division is done the same way numerical long division is done.

The next quotient term is found by dividing the highest-degree dividend term by the highest-degree divisor term. The result is the exact quotient term. There is no need to go back and make an adjustment as there sometimes is with numerical long division.

Once you have the quotient term, you multiply that by the divisor and subtract from the dividend. This is the same procedure as is used with numerical long division. The difference is the new dividend, and the process repeats.

When the dividend is lower-degree than the divisor, that dividend is the remainder. For this division, the remainder is zero, so the quotient has no fractional part.

__

Both the quotient and the divisor can have any degree and any number of terms. It is useful to write both so all powers of the variable are accounted for, using 0 as a coefficient where necessary. This helps keep things straight when you're multiplying and subtracting. As you know, only "like" terms (terms of the same degree) can be combined by addition or subtraction.

[tex]1 \times \frac{3}{5} + ( \frac{7}{10} )[/tex]

Answer:

1 \times \frac{3}{5} + ( \frac{7}{10} )

Answer:

Second and Fifth answers

Step-by-step explanation:

The negative is being multiplied by a negative so the 7/10 should be positive.

Answer:

A

Step-by-step explanation:

[tex]log_{10}x=-5\\10^{-5}=x\\x=\frac{1}{10^5}[/tex]

Answer:

124/ 225

see photos for step to step solution

No, 42,497,365 is not divisible by 6.

Hope it helps you! :)

[tex]GraceRosalia[/tex]

Answer:

Since our angle is greater than 270 and less than or equal to 360 degrees, it is located in Quadrant IV

In the fourth quadrant, the values for cos are positive only.

317 is an obtuse angle since it is greater than 90°

cos(317) = 0.73135369730756

Step-by-step explanation:

Answer:

Since VYU is 73 and angle from v to w is 180 then WYU =180-73 =107

Answer:

The answer is A. when you compress horizontally you take it by a factor of 1/a. in this case a=5. 12 is your k value and k decides whether or not you shift up or down, because k is positive or is upward by 12

Step-by-step explanation:

Please Mark Brainliest

Answer:

No

Step-by-step explanation:

Draw a vertical line.  If a vertical line passes through two or more points on the graph, it is not a function.  Since it passes through 2 points, it is not a function

Answer: -14.5

What I did was Subtract 3.5 from -11.

When you add them together, you get 14.5, but 14.5 isn't correct, as that's a very large number compared to -11.

Answer:

-14.5

Step-by-step explanation:

-11 - 3.5

Because 11 is already negative, when you subtract a number from a negative, think of -11 becoming "smaller" (smaller being -14, or -25).

When doing -11 - 3.5, think if it as adding 11 and 3.5 together !

When you add them together, you get 14.5, but 14.5 isn't correct, as that's a very large number compared to -11.

You add a negative sign to said -14.5, and that's your answer !

Subtracting from a negative is confusing, so I taught myself to think of it as adding the numbers as if they were positive and adding a negative sign !

Answer:

82 - 2i

Step-by-step explanation:

(5 - 2i) + (-4 + 81)

5 - 2i + 77

= 82 - 2i

1 + 6i

we open the brackets to give us

5 - 2i - 4 + 8i

collecting like terms, we have,

-2i + 8i + 5 - 4

6i + 1

or

1 + 6i

Answer:

They can invite at max 112 people.

Step-by-step explanation:

4000 - 50 = 3950

3950 / 35 = 112.85 (Can't round up to 113 because then it will go over their budget), so you will get 112 people.

Answer:

carbonic acid

Step-by-step explanation:

this is a compound called carbonic acid

Answer:

Step-by-step explanation:

10

You are rotating the the triangle 180 degrees about the origin. The rule for that is (x,y) ----> (-x,-y)

So X starts at (-4,1) and rotates until it hits (- - 4, -1 or (4,-1). Question is that where X' is? Yes.

Now try the next two points

W(-3,-4) ------> W'(- - 3, - -4) = W'(3,4)

Y(-1,-2) =====> y'(- - 1 , - - 2) = Y'(1,2)

Is that where these points are? Yes it is

12

This given triangle GFH rotates 90 anticlockwise. The rule for that (x,y) ===>(-y,x)

This means that you interchange x and y and make the y value minus. All you have to do is obey the rule.

F(-3,0) becomes F'(0,-3)

G(4,0) becomes G'(0,-4)

H(-3,3) becomes H'(-3,-3)

Answer:

  10) (x, y) ⇒ (-x, -y) . . . . rotation 180° about the origin

  12 (x, y) ⇒ (-y, x) . . . . . rotation 90° CCW about the origin

Step-by-step explanation:

10) The order of the points WXY is CW in both figures, so no reflection (or an even number of reflections) across a line will be involved. Each image point is the same distance from the origin as its preimage point, so no dilation is involve. Those distances are in opposite directions, so rotation 180° about the origin is indicated.

The transformation describing that is ...

  (x, y) ⇒ (-x, -y)

__

12) The order of points GHI is CW in both figures, so reflection across a line is not involved. Each image point is the same distance from the origin as its preimage, so no dilation is involved. The direction from the origin is different by 90°, so there has apparently been a 90° CCW rotation about the origin. This transformation is described by the rule ...

  (x, y) ⇒ (-y, x)

there would be a $21,000 profit.

this is because of the equation:[tex]40,000(.75) + 60,000(.45)+80,000(.30)+(-20,000)(1)= 21,000[/tex]

I would expect a $21,000 profit if I sign with all 3 companies.

Given that my business is looking into three contracting firms, and based on previous research, there is a 75% chance that company 1 will earn me $ 40,000, there is a 45% chance that company 2 will earn me $ 60,000, while Company 3 has a 30% chance of earning me $ 80,000, and it costs $ 20,000 to draw up legal paperwork for each company, to determine how much profit or loss would I expect after this deal is done if I sign with all 3 companies, the following calculation must be performed:

Therefore, I would expect a $21,000 profit if I sign with all 3 companies.

Learn more in https://brainly.com/question/22097128