solve the system x+2y-5z=10, y+2z=2, z=-1

Answers

Answer 1

Answer:

x=-3,y =4 z=-1

Step-by-step explanation:

x+2y-5z=10

y+2z=2

z=-1

Since z = -1, substitute into the second equation

y + 2(-1)=2

y -2 =2

y = 2+2

y=4

We can substitute into the first equation

x+2(4) -5(-1) =10

x+8+5=10

x+13 = 10

x = 10-13

x=-3


Related Questions

convert 35cm to metres​

Answers

Answer:

35cm is 0.35 metres.

Hope this helps!

help with 5a, to find the values of x​

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not sure what it is but i love ur handwriting- u got this though

ANSWER FAST PLEASE identifying difrent slopes consider the line that passes through each pair of given points and decide what type of slope the line was

Answers

Answer:

(2/4) and (5,1) negative slope

(-7,8)and(-7,0) undefined slope

(3,5) and (-1,2) positive slope

(6,-3) and (-4,-3) zero slope

Step-by-step explanation:

took the assignment a while back <3 not sure if those are the ones that were provided in ur edge tho because there was no picture provided on this question

Write the equation of the vertical line that passes through the point (-4,-2).

Answers

The equation is x = -4.

pls mark me as brainliest!

solve pls brainliest

Answers

Answer:

y = 1.28

Step-by-step explanation:

Hi there!

[tex]10.24=8y[/tex]

To solve for y, divide both sides by 8:

[tex]\displaystyle \frac{10.24}{8} =\displaystyle \frac{8y}{8} \\\\1.28=y[/tex]

Therefore, y = 1.28.

I hope this helps!

Answer:

= 1 . 2 8

Step-by-step explanation:

10.24 =8y

10.24  =  8y

8              8

solve pls brainliest

Answers

Answer:

white

4 were sold

3 more gray were sold than white

3 colors sold 10 or more

Answer:

a) White

b) 3

c) 3

Step-by-step explanation:

a) White as it is the shortest bar (has the lowest height and only has 4 t-shirts sold)

b) According to the bar graph, 7 grey t-shirts were sold and 4 white t-shirts were sold. Subtracting 4 from 7 = 7-4 = 3

Hence, 3

c) At least 10 T-shirts sold, suggests that it was greater than or equal to 10. According to the graph, black has 12, tan has 11, and brown has 10. Hence,

3 colors had at least 10 t-shirts sold.

Hope this helps and be sure to have a wonderful time ahead at Brainly! :D

Feel free to mark this as brainliest!

solve pls brainliest

Answers

Answer:

0÷3= 0

0/5= 0

Step-by-step explanation:

sorry if I did it wrong

help please thank you

Answers

Part A: 5.868 * 10^6
Part B: 1.888*10^11
I don’t know the answer but I trying to figure out

what is the answer to 28.2 divided by 2

Answers

Answer:

14.1

Step-by-step explanation:

Given that lines a and b are parallel:
If m48 = (-x + 13), and
= +
m42 = (9x - 27),

Answers

Answer:

[tex]x= 9m+69​ ,m 48​ =− 9m​ + 316​[/tex]

 

 

 

An engine runs for 5.8 hours. How many seconds did it run?

Answers

Answer: 20880 seconds.

Step-by-step explanation:

An academy requires there to be 3 teachers for every 72 students and 5 tutors for every 60 students. How many students does the academy have per teacher? Per tutor? How many tutors does the academy need if it has 132 students?

Answers

For every 24 students there is one teacher. For every 12 students is one tutor. If the Academy had 132 students then you will need 11 tutors.

Question 1 (3 points)
CALCULATOR PERMITTED FOR SUBPART 3
At a bake sale, plates of cookies, p, are sold for $5 each. The amount of money
from the sale of cookies is expressed as dollars, d. Which equation represents the
earnings of the bake sale?
Plates of Cookies (p)
1
2
3
4
Earnings (d)
5
10
15
20
HN
o lol
O a
d = p + 5

d =P
=
5

Answers

done good job question giy

MATH WEEK 5 DISCUSSION

Answers

5 ————————————————————————-

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

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Answer:

Step-by-step explanation:

The answer is B brace in this image it shows the words that it says plz trust me and tell me if this is wrong it should not be tho

Facts about a linear relationship

Answers

Answer:

A linear relationship (or linear association) is a statistical term used to describe a straight-line relationship between two variables. Linear relationships can be expressed either in a graphical format or as a mathematical equation of the form y = mx + b

Step-by-step explanation:

if 126 base n =86 base ten, find the positive value of n​

Answers

Answer:

8

Step-by-step explanation:

help pls!!
#420hehsh

Answers

Answer:

It's gonna be probably A

solve pls brainliest

Answers

In coordinates, the first number is the x and the second one is y. In (4,2), 4 is the x and 2 is the y. The x axis goes from left to right and the y axis goes from up to down.

Two dice are rolled. Determine the probability of the following. ("Doubles" means both dice show the same number.)
rolling a 4 or doubles

Answers

Answer:

The answer is 2/9

Step-by-step explanation:

I got it right on the test

The nurses of a local hospital pledged of the following donations, in pesos, to the
Philippine Red Cross.
50 100 75 80 40 60 50 20 25 30 42
Find the:
(b) Mean
(c) MAD (in one decimal place only)

Answers

Answer:

Mean = 52  MAD = 47.3

Step-by-step explanation:

mean  = 50 + 100+ 75 + 80 + 40 + 60+ 50+ 20 +25 +30 +42  / amount of data = 572 / 11 = 52    MAD = rearrange numbers = 100+ 80+75+ 60 + 50 + 50+ 42 + 40+30+ 25+20 = 25 + 5 +15+10+8+2+10+5+5 = 85  / amount of data = 85/9= 9.44 then distance on number line each way = 9.44/2 = 4.72  = MAD =52-4.72 = 47.28

The mean and the MAD (mean absolute deviation) of the given data are 52 and 19.4.

What is mean and MAD?

Mean is the average number of the given terms and can be calculated as the ratio of the sum of the terms to the total number of terms.

mean = sum of the terms / total number of terms

MAD refers to the Mean absolute deviation which is the average distance between each data and the mean.

MAD =  [tex]\frac{1}{n} \rm |X_{i} - X|[/tex]

mean = sum of the terms / total number of terms

[tex]= \frac{50 + 100 + 75 + 80 + 40 + 60 + 50+ 20+ 25+ 30+ 42 }{11}[/tex]

[tex]=\frac{572}{11}[/tex]

= 52

Mean = 52

MAD =  [tex]\frac{1}{n} \rm |X_{i} - X|[/tex]

         =  2+ 48 + 23 +28+ 12+8+2+32+27+22+10 / 11

         =  214 / 11

Mean absolute deviation = 19.45

Therefore, the mean and the MAD (mean absolute deviation) of the given data are 52 and 19.4.

Learn more about Mean absolute deviation here:

https://brainly.com/question/10528201

Was the HOA president right for doing so? What other factors could have contributed to both the rise in ice cream sales and murders? Is this an example of correlation or causation?

Answers

Answer:

No, the HOA president was wrong because both murder and ice cream sales spiked during the summer months but slowly decreased during months in the spring, fall and winter times. This is an example of causation.

Step-by-step explanation:

I wouldn't put exactly that because i put that on mine but here's an idea!

Hope this helps! <3

Have a nice day/night!

Second angle of a triangle is 10 degree larger than first angle. Third angle is 10
larger than second angle. Find the smallest angle of the triangle.

Answers

Let’s make a equation for each angle of triangle
Angle 1 = x
Angle 2 = x+10
Angle 3 = (x+10)+10

Angle 2 and 3 are both adding to the value of angle x so angle 1 is the smallest angle of the triangle.
Hope this helped :)

Can anyone help me solve these ?

Answers

Answer:

try using demos its a great app for creating and reading maps

Charlie rented a truck for one day. There was a base fee of $16.95, and there was an additional charge of 93 cents for each mile driven. Charlie had to pay
205.74 when he returned the truck. For how many miles did he drive the truck?

Answers

Answer:

Charlie drove 203 miles

Step-by-step explanation:

205.74-16.95=188.79

188.79/.93=203

Have a happy day <3 Miss Hawaii

find the value of x and y

Answers

Answer:

x = 8, y = 27

Step-by-step explanation:

Since both opposite lines are equal in length to each other, these opposite lines are parallel to each other.  The top line is parallel and same length as the bottom line and the left and right lines are also parallel and equal in length.

Based on that, the two left side angles must equal 180 and the right side two angles must equal 180.

(2y + 24) + (3y + 21) = 180

That's the same as 2y + 24 + 3y + 21 = 180

Simplify to 5y + 45 = 180

Subtract 45 from both sides

5y = 135

y = 27

(16x - 26) + (9x + 6) = 180

16x - 26 + 9x + 6 = 180

25x - 20 = 180

25x = 200

x = 8

Which term best describes the geometric figure?

Line
Point
Ray
Segment

Answers

Answer:

point

Step-by-step explanation:

the dot has no connectives or no paths

The best describes the geometric figure is a point. SO option B is correct.

What is a line segment?

A line segment is a part of a line that connects two points which are considered to be its endpoints.

If points A and B are connected by a series of points that extended infinitely in opposite direction then AB is a line.

Therefore, The best describes the geometric figure is a point. SO option B is correct.

Find out more information about line segment here;

brainly.com/question/25727583

#SPJ5

Which expression is equal to x + 5 + 5x + 10 + 2y? *

Answers

Answer:

x + 5 + 5x + 10 + 2y = 6x + 2y + 15

Step-by-step explanation:

Group like terms

= x + 5x + 2y + 5 + 10  

Add the number 5 + 10 = 15  

= x + 5x + 2y + 15

Add similar elements x + 5x = 6x  

= 6x + 2y + 15

Have a good day :)

Can someone please show a piece of paper or ex’s plum how you do h point?

Answers

Answer:

(-1,-1)

Step-by-step explanation:

well a square has four sides and they are all equal so it would have to be (-1,-1) for the sides to be equal

6 = 2n + 10
Please help

Answers

Answer:

6 = 2n + 10

6-10=2n

-4/2=n

-2=n

6=2n+10
-2n=18-6
-2n=12
n=-6
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