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

Answers

Answer 1

Step-by-step explanation:

[tex]1) \: \: - x + 2y + 2z = - 4 \\ 2z = - 4 + x - 2y \\ z = \frac{ - 4 + x - 2y}{2} \\ \\ 2) \: \: 4x + y - 3z = 13 \\ - 3z = 13 - 4x - y \\ z = \frac{13 - 4x - y}{ - 3} \\ \\ 3) \: \: x - 5y + z = - 23 \\ z = - 23 - x + 5y \\ [/tex]


Related Questions

102÷6 what is the Anser

Answers

Answer:

17 good luck

Step-by-step explanation:

the answer is 17

102/6= 17

Answer:

17

Step-by-step explanation:

it just is

hope this helps, I am writing because I need words

Hello! I'm in the 7th grade and I'm having trouble with math this year... Will someone please help me with this? :)

(the question is down below)

Answers

Answer: 66

Step-by-step explanation: 30 x 2 = 60... 30 / 5 = 6... 60 + 6 = 66 :D

i'm in seventh too hehe

will give brainliest to the correct answer
there are 192 candies. some are sour and some are sweet. for every 15 sour there is 1 sweet. how many candies are in the bag? how many are sweet?

Answers

there are 192 candies in the bag
13 are sweet and 179 are sour
i hope this helps and is the correct answer

Write a problem based on the given information.
7.) c = cost per pound of plain coffee beans
C + 3 = cost per pound of flavored coffee
beans 2c + (c + 3) = 21

Answers

4c+ 3 = the number of coins so therefore that is the equation you need to use

III
O SYSTEMS OF LINEAR EQUATIONS
At a basketball game, a vendor sold a combined total of 150 sodas and hot dogs. The number of sodas sold was 30 more than the number of hot dogs sold. Find
the number of sodas sold and the number of hot dogs sold.
Number of sodas sold:
Number of here

Answers

Creo que es multiplicando 4,500

If the sum of two integers are negative. Must both integers be negative

Answers

Answer:

Not necessarily. There are many ways to write a basic equation with a negative answer. For example, -3-4 = -7.

Step-by-step explanation:

No because if the negative has a bigger number than the positive cant over run it and make it positive
Ex. -10+5=-5
-19+15=4

*This problem is all about Multiplication Comparison*

How long is Pine Street?

Answers

Answer:

7

Step-by-step explanation:

Pine Street in x miles long.

Maple street is 3 times as long as Pine Street, so Maple street is 3x miles long.

Maple street is 21 miles long.

3x = 21

x = 7

Maple Street is 7 miles long.

One of the cutting machines is shut down for repairs. How many parts can the remaining machines cut in 4 1/2 hours?

Answers

Answer:

the answer is sike not telling you

Step-by-step explanation:

What plus what equals -8 ?

Answers

Answer:

-4+-4

Step-by-step explanation:

Two number whose sum equal to - 8 are - 11 and 4.

We have to given that,

To find two numbers whose sum equal to - 8.

Now, Let us asume that,

Two numbers are - 11 and 4.

Sum of both numbers are,

- 11 + 4

= - 8

Hence, Two number whose sum equal to - 8 are - 11 and 4.

Learn more about the addition visit:

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Can you please help :)

Answers

Answer:

6 in.

Step-by-step explanation:

plz help me I'm about to cry

Answers

Answer:

yyy i will help....... dont cry

The marksobtained by a group of students in science test are 90, 49, 87, 74,80, 85, 49
Find the
a) Median
b) Mode
c) Range

Answers

Answer:

1. Median refers to the central value of a collection of data

Therefore it is 73.4

2. Mode refers to the frequency of a value in a collection of data

It will be 49 as it is repeated 2 times

3. Range refers to The greatest number subtracted from the smallest number

Which will be 90-49=41

Hope this helps dude!

Please mark me as brainliest

PLEASE HELP ITS MATH THANK YOUUUU

Answers

Answer:

24 feet

Step-by-step explanation:

3x1=3 and 8x3=24

0.5x+2 is it a linear function? yes or no


pls help

Answers

Answer:

yes

Step-by-step explanation:

when graphed it is a non vertical line.

Which of the following describes a gerund and how it functions in a sentence? (1 point)
O A gerund is a noun that functions as the subject of a sentence.
O A gerund is a noun that functions as the direct object receiving the action in a sentence.
O A gerund is a verb ending in -ing that functions as a verb in a sentence.
O A gerund is a verb ending in -ing that functions as a noun in a sentence.

Answers

Answer:

a

Step-by-step explanation:

The accurate definition of the gerund and its purposes is "gerund is a verb ending in -ing that serves as a noun in a phrase." Thus, option fourth is correct.

What is sentence?

Sentence refers to a set of words that are appropriately ordered in a line and provide the sense or meaning. When the line imparts meaning to the words, it is considered to be a sentence.

A combination of words that may transmit a statement, question, exclamation, or demand on their own. Sentences generally include a subject and a predicate, as well as one main clause and one or more subsidiary clauses.

Gerund is a verb form that includes -ing at the end of the word and functions as a noun in the phrase. Gerunds, like the other two forms of verbals, are founded on a verb and hence reflect the verbal category.

Therefore, it can be concluded that option fourth is correct.

Learn more about gerund here:

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please help me with they math I wil lvote brainlyest

Answers

Answer:

Question no 3...

answer is 24

Question no 4

answer is 3.562*10^3

What is (23)(−98)(−45)(−1)

Answers

Answer:

(23)(−98)(−45)(−1)= -101430

Match the proper noun to the common noun.


1. Uncle Peter
automobile
2. January
president
3. Jesse Owens
relative
4. William Shakespeare
author
5. Sunday
athlete
6. Abraham Lincoln
month
7. Chrysler
day
X

Answers

uncle peter-relative

january-month

jesse owens-athlete

william shakespeare-author

sunday-day

chrysler-automobile

Find the value of y' when x
O if
xy^8 + e^y/5 =
= e.

Answers

It looks like the given equation says

[tex]xy^8 + e^{y/5} = e[/tex]

When x = 0, you have

[tex]0\cdot y^8 + e^{y/5} = e \\\\ e^{y/5} = e^1 \\\\ \dfrac y5 = 1 \\\\ y=5[/tex]

Differentiating both sides with respect to x gives

[tex]\left(xy^8 + e^{y/5}\right)' = e' \\\\ \left(xy^8\right)' + \left(e^{y/5}\right)' = 0 \\\\ x\left(y^8\right)' + x'y^8 + e^{y/5}\left(\dfrac y5\right)' = 0 \\\\ 8xy^7y' + y^8 + \dfrac15e^{y/5}y' = 0[/tex]

That is, the derivative operator distributes over sums, and the derivative of a constant is 0; apply the product rule on the first term and chain rule on the second; then use chain rule one more time.

Now plug in x = 0 and y = 5, and solve for y' :

[tex]8\cdot0\cdot5^7y' + 5^8 + \dfrac15e^{5/5}y' = 0 \\\\ 5^8 + \dfrac15e y' = 0 \\\\ \dfrac15e y' = -5^8 \\\\ y' = \boxed{-\dfrac{5^9}e}[/tex]

Hello! I would like some help. Thank you!
Find the length of the right triangles other leg. Round to the nearest tenth. Leg=10

A. 6.6 ft
B. 15.6 ft
C. 43.6 ft
D. 2ft

Thank you!!!

Answers

Answer:

A. 6.6 ft

Step-by-step explanation:

How much of the circle is shaded? Write your answer as a fraction in simplest form? 3/7 and 1/3 isn't shaded ​

Answers

Answer:

[tex]total = 1 \\ \frac{1}{2} + \frac{1}{7} + x = 1 \\ \frac{1}{7} + x = 1 - \frac{1}{2} \\ \frac{1}{7} + x = \frac{1}{2} \\ x = \frac{1}{2} - \frac{1}{7} \\ x = \frac{7 - 2}{7 \times 2} \\ x = \frac{5}{14} \\ \\ shaded \: portin \: = \frac{5}{14} \\ thank \: you[/tex]

Answer:

[tex]\frac{5}{14}[/tex]

Step-by-step explanation:

Half the circle ( to the left ) is partly shaded

shaded part = [tex]\frac{1}{2}[/tex] - [tex]\frac{1}{7}[/tex] = [tex]\frac{7}{14}[/tex] - [tex]\frac{2}{14}[/tex] = [tex]\frac{5}{14}[/tex]

√6⋅√11⋅√5
simplify to radical form

Answers

Hey! Your answer to this would be [tex]\sqrt{330}[/tex]

Combine Like Terms:

12 + 16 + 9x^2

Answers

28+9x^2

12+16=28. This is the only adding you have to do since unlike 9x there is no variable or other terms so you leave the 9x^2 alone

1:50000
What distance is represented by Tem?
18cm
D
E
6.25cm
X
B
8cm
Jane Nane serigre ines
OP para
с
Net Groen
6cm
P
a
M
A
Som
N
Gom
15cm

Answers

Answer:

explain better

Step-by-step explanation:

I do not understand

It is 8383838

Select the only true statement from the following.



Opposite numbers have different signs and are different distances from zero.


Opposite numbers have the same sign and are the same distance from zero.


Opposite numbers have different signs but are the same distance from zero.


Opposite numbers have the same sign but are different distances from zero.

Answers

Answer:

the third one

Step-by-step explanation:

please help my teacher make me do all of this
Review Directions: Solve each of the following equations. 1. 2x - 12 = 6 1. 2x - 12 = 6 2. 2x + 6= 8 3. 12s - 12=12 4. 14s + 6 = 35 5. 3s - 12 = 6 6. 18t + 9 = 34 7. 21x + 7 = 28 8. 50y + 5 = 105 9. 1/4x - 6 = 24 10. 13x + 2 = 18 11. 6 - 3x = 18 12. 14 + s = 21 13. 16x - 4 = 28 14. 19x - 1 + 3 = 40 15. 10t = 194 16. 400x + 100 = 1100 17. 40 - 3x + 3 = 113 2. 2x + 6= 8 3. 12s - 12=12 4. 14s + 6 = 35 5. 3s - 12 = 6 6. 18t + 9 = 34 7. 21x + 7 = 28 8. 50y + 5 = 105 9. 1/4x - 6 = 24 10. 13x + 2 = 18 11. 6 - 3x = 18 12. 14 + s = 21 13. 16x - 4 = 28 14. 19x - 1 + 3 = 40 15. 10t = 194 16. 400x + 100 = 1100 17. 40 - 3x + 3 = 113

Answers

Doing it now. It may take a minute, but i got you :)

Kari has x green apples and y red apples. Which statement explains why x + y and y + x will each find the total number of apples that Kari has?

Question 10 options:

In addition, the order of the variables matters in the expression.


In addition, the order of variables does not matter in the expression.


The first expression has a greater value than the second expression.


The expressions are not equivalent because there are two variables.

Answers

x+y and y+x are the same as stated by the commutative law.
This is because let’s say x=2 and y=3,
2+3=5 and 3+2=5

2 divided by 2348=? plz help

Answers

Answer:

0.00085

                   

Hope this helps

Answer:

0.00085

Step-by-step explanation:

2/2348= 0.00085

A dairy needs 357 gallons of milk containing 5% butterfat. How many gallons each of milk containing 7% butterfat and milk containing 1% butterfat must be used to obtain the desired 357 gallons?

Answers

9514 1404 393

Answer:

238 gallons 7%119 gallons 1%

Step-by-step explanation:

Let h represent the number of gallons of high butterfat content milk. Then 357-h will be the number of gallons of 1% milk. The total amount of butterfat in the mix is ...

  0.07h +0.01(357 -h) = 0.05(357)

  0.06h = 14.28 . . . . . . . . . . subtract 3.57, collect terms

  h = 238 . . . . . . . . . .  divide by 0.06

  357-h = 357 -238 = 119

238 gallons of 7% and 119 gallons of 1% are needed.

NEED HELP ASAP....................

Answers

Answer:

not equivalent

Step-by-step explanation:

i believe this should be right

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