pleaseeeeeeeeeeee helpppppppp

Explain what method you would use to solve the following system:

3x + 4y – 5z = -3

-5x -2y + 6z = 5

4x – 8y + 3z = -10




thanks

Answers

Answer 1
simultaneous equation

Related Questions

if one box has a surface area of 240 inches what is the surface area of 5 boxes??
#answernowuwuplease

Answers

Answer:1200

1 box=240

so if you take 240 x5 you get 1200

Step-by-step explanation:

If one box has a surface area 240 inches and you have 5 boxes, multiply 240 by 5. The answer is 1200 inches of surface area.

You hang two strands of decorative lights.

a strand of red and blue decorative lights a strand of yellow and green decorative lights
Strand 1: changes color every 18 seconds Strand 2: changes color every 27 seconds
Both strands just changed color. After how many seconds will the strands change color at the same time again?

The strands will change color at the same time again after
seconds.

Answers

Answer:

The stands will change color at the same time after 54 seconds.

Step-by-step explanation:

Find the Lcm number of both number (18 and 27)

The answer will be 54

A square scarf has a side length of 3/4 yard on each side.

What is the area of the scarf?

Enter your answer in the boxes as a fraction in simplest form.

Answers

Answer:

[tex]\frac{9}{16}\ yd.^2[/tex]

Step-by-step explanation:

Area of a square: [tex]a^2[/tex] = [tex]a*a[/tex]

[tex]A = a^2\\\\A = \frac{3}{4}* \frac{3}{4}\\\\A = \frac{9}{16}[/tex]

Therefore, the answer of the scarf is [tex]\frac{9}{16}\ yd.^2[/tex]

Hope this helps!

hi everone can you help i will be sending more qusetions each one is 10 points thank you

Answers

Answer: 326

The blank space equals 326, 326 times 15 is 4890 as you’d start by multiplying 326 times 10 then multiply 326 times five then add the two sums and get your answer.


We can use inverse operations to find this question by dividing 4890 by 15. We can check our answer by multiplying 326 by 15.

Answer:

326

Step-by-step explanation:

We can use inverse operations to find this question by dividing 4890 by 15. We can check our answer by multiplying 326 by 15.

Hope this helps :)

Solve rational Equation

Please Show Full Steps Please!


Answers

Answer:

x=1

Step-by-step

Step 1:

Simplify x/x2

Dividing exponential expressions :  

1.1    x1 divided by x2 = x(1 - 2) = x(-1) = 1/x1 = 1/

Equation at the end of step 1:

  2    1         1

 (((—+1)-—)-1)-((2•—)-1)  = 0

    x    x         x

STEP 2:Rewriting the whole as an Equivalent Fraction:

2.1   Subtracting a whole from a fraction

Rewrite the whole as a fraction using  x  as the denominator :

        1     1 • x

   1 =  —  =  —————

        1       x  

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

Adding fractions that have a common denominator :

2.2       Adding up the two equivalent fractions

Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

2 - (x)     2 - x

——— = ———  

   x          x  

Equation at the end of step 2:

2    1     (2-x)

 (((—+1)-—)-1)-—————  = 0

    x    x       x  

STEP 3:

Simplify 1/x

Equation at the end of step 3:

2          1           (2 - x)

 (((— +  1) -  —) -  1) -  ———————  = 0

    x          x              x  

STEP4:

Simplify: 2/x

Equation at the end of step 4:

    2          1                 (2 - x)

 (((— +  1) -  —) -  1) -  ———————  = 0

    x          x                      x  

STEP 5:

Rewriting the whole as an Equivalent Fraction :

5.1   Adding a whole to a fraction

Rewrite the whole as a fraction using  x  as the denominator :

        1         1 • x

   1 =  —  =  —————

        1            x  

Adding fractions that have a common denominator :

5.2       Adding up the two equivalent fractions

2 + x                x + 2

—————  =  —————

  x                       x  

Equation at the end of step 5:

(x + 2)    1                                (2 - x)

 ((——————— -  —) -  1) -  ———————  = 0

      x       x                                  x  

STEP 6:Adding fractions which have a common denominator :

Adding fractions which have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

(x+2) - (1)                            x + 1

———————————  =  —————

     x                                       x

Equation at the end of step 6:

  (x + 1)                           (2 - x)

 (——————— -  1) -  ———————  = 0

     x                               x

STEP 7:

Rewriting the whole as an Equivalent Fraction :

7.1   Subtracting a whole from a fraction

Rewrite the whole as a fraction using  x  as the denominator :

        1     1 • x

   1 =  —  =  —————

        1       x  

Adding fractions that have a common denominator :

7.2       Adding up the two equivalent fractions

(x+1) - (x)                           1

———————————  =  —

     x                                   x

Equation at the end of step 7:

 1       (2 - x)

 — -  ———————  = 0

 x         x

STEP 8:

Adding fractions which have a common denominator :

8.1       Adding fractions which have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

1 - ((2-x))                              x - 1

———————————  =  —————

     x                                     x    

Equation at the end of step 8:

 x - 1

 —————  = 0

   x  

STEP 9:

When a fraction equals zero :

9.1    When a fraction equals zero ...

Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.

Here's how:

 x-1

 ——— • x = 0 • x

  x

Now, on the left hand side, the  x  cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

  x-1  = 0

.2      Solve  :    x-1 = 0

Add  1  to both sides of the equation :

                     x = 1

One solution was found :

x = 1

   

Andrew scores 79, 86, 63, and 82 on his recent tests, when measure of centeral tendency should he use to describe to his mom his his tests are going

Answers

Answer:

e

Step-by-step explanation:

Central tendency means “the statistical measure that identifies a single value as representative of an entire distribution." These measures include mean, median, and mode.

Andrew scores 79, 86, 63, and 82 on his tests.

63, 79, 82, 86

Mean: 79 + 86 + 63 + 82 = 77.5 or

Median: 79 + 82 = 80.5

(you have to add these numbers bc there is no exact median as none are repeating)

Mode: There is no exact mode since there is no repeating numbers.

He should use the mean bc the mean is a pretty good number.

I'm not sure if you would want to tell your mother that you're barely getting an average. or higher than failing.

either way, hope this helps :)

median if you want higher
mean if you want average

This is the graph of a polygon. What is the approximate perimeter of the polygon?
A:18.3 units
B:20.5 units
C:24.3 units
D:28.5 units

NO LINKS OR IMPROPER ANSWERS

Answers

The answer is 20.5 if you find the perimeter

Determine which is the better buy.
9 straps for ​$10.25 or 30 straps for ​$66.00

Answers

Answer:

9 straps for $10.25

Step-by-step explanation:

Price rate

9 straps for $10.25 = 10.25/9 = $1.14 per strap30 straps for $66 = 66/30 = $2.20 per strap

Better buy

9 straps for $10.25Less cost per strapbetter buy

Answer:

9 straps

Step-by-step explanation:

If you're selling 30 straps for $66 then you get a 2.2 per each

But 9 straps for $10.25 will get 1.139

So, the value that's smaller which is 9 straps for $1.139 is a better buy

Question belowwwwwww............................

Answers

Answer:

I think it's 4 ft.

Step-by-step explanation:

Answer:

i think it c

Step-by-step explanation:

Pls Help..............

Answers

Answer:

12

Step-by-step explanation:

V = l*w*h
V = 4*1.5*2
V = 12

Hope this helps :)

Make a bell curve for the data: (99, 60, 82, 78, 93, 71, 68, 86, 80, 95, 72, 64)

Answers

Answer:

Make a bell curve for the points 99, 60, 82, 78, 93, 71, 68, 86, 80, 95, 72, 64 · The variables x and y have a proportional relationship, and y=7 when x=2.

Step-by-step explanation:

giving brainliest!!!!!

Answers

Answer:

5.(4,6) 6. (2,9) 7. (0,4)

1-4 i dont know

1. The x axis is the horizontal line
2. The y axis is the vertical line.
4. 1,5 is the first square… 4,6 is the second.. and 5,1 is the third

i need helppppp can u explain this

Answers

Answer:

1. 2^5

2. 5^2

3. 3^4

4. 4^3

5. 6^3

6. 3^6

Please give brainliest!!

Answer:

1. 2^5

2. 5^2

3. 3^4

4. 4^3

5. 6^3

6. 3^6

Step-by-step explanation:

Please help as soon as possible

Answers

Answer:

1) 0.392

2) 0.395

3) 0.397

4) 0.393846294629468261456382648477982195862

Step-by-step explanation:

It is asking for 3 numbers greater than 0.39, with three in the tenth place (0.x000) that is less than 1. By adding a number in the thousandth place to 0.39, we automatically make it larger. Adding more digits will make it slightly larger, as long as it isn't a 0. All 4 answers I have provided are correct, however, I would just use the first 3 for your question.

Hope this helps! Have a great day!

A 38 -ounce bottle of juice drink contains 6 percent water. Than computed 6 percent of 38 . His work is shown below.


6 percent of 38 =0.6×38=22.8


Which statement explains Than’s error?


hurry i need it ASAP

Answers

Answer: Than did not move the decimal point three places to the left in the answer

Step-by-step explanation:

i need help on this how do i do this

Answers

answer: 4311/9900 = 0.4354 4936/990 = 4.985 530/900 = 0.58 674/990 = 0.680 8099/990 = 8.180 explanation: divide the numbers and select the answers.

Michael has 26 shirts to fold. Let N be the number of shirts he would have left to fold after folding F them. Write an equation relating N to F . Then use this equation to find the number of shirts he would have left to fold after folding 23 of them.

Answers

Answer:

N = 3 F = 26

Step-by-step explanation:

If there's 26 in total and Michael has folded 3 of them N would be 3. F will be the total after folding 'N' amount left of the clothes!

PLEASE HELP ME WITH MY MATH

Answers

Oh my gosh,

I need an answer for that as well..

Answer:

EYYRHEHF

Step-by-step explanation:

I HAVE NO IDEA PLEASE I NEED POINTS AND WANT TO BE BRAINLIEST I NEEEED ITTT !!!!11

Consider two circular swimming pools. Pool A has a radius of 28 feet, and Pool B has a diameter of 17.26
meters. Complete the description for which pool has a greater circumference. Round to the nearest
hundredth for each circumference. 1 foot-0.305 meters

Answers

Answer:  pool b

Step-by-step explanation:

the bigger the number then it the nearest to the tens and it smaller its easy i use common sense

solve for angle 1 i got an answer but i dont know if it’s right

Answers

Answer:

73

Step-by-step explanation:

72 - 35 = 107

180 - 107 = 73

107 + 73 = 180

I think it may be 73

Correct me if I’m wrong :))

HElp me?
Please? Yikes?

Answers

Answer:

A

Step-by-step explanation:

A, 5w^3 is the gcf of the expressy

Rebecca had these results when she drew 10 tiles from the bag. The bag has a total of 20 tiles. Her classmates got similar results. What is a good predication for the number of green and red tiles out of 20?

Answers

Answer:

10/20

Step-by-step explanation:

if she has 20 in total and there's only two colours I would assume it's an even chance,

For example a coin has two sides, = even chance of getting each side.

Good luck hope this helped

15 green 5 red that’s my prediction

The diameter of a circle is 14 in.
What is the radius of the circle?
A. 7 in
B. 21 in
C. 28 in
D. I don't know.

Answers

A. 7in

the radius is always half the diameter :))

branliest?

I believe the answer is 7

Step-by-step explanation:

The radius is like half of the diameter and 14/2=7

Hope this helps

PRACTICE PROBLEM

Find the area of the parallelogram


_____ Square units


KHAN ACADEMY

Answers

Answer:

18

Step-by-step explanation:

parellelogram area is b(vh), 6 x 3 = 18

18,
Bc i did the math

Hi everone can you help i will be sending more qusetions each one is 10 points thank you

Answers

Answer:

144 cubic inches

Step-by-step explanation:

volume = l x w x h. This = 8 x 6 x 3.

Hope this helps :)

Your answer would be 144 cubic inch.

I need help if anyone could help me solve these problems that would be very helpful!

(I'll give brainliest if you can solve all of them!)
Please lmk which ones you've solved so I know which question it is. thanks!

Answers

Answer:Q9 is 12.2. Q10 is C. Q11 is C. Q12 Is 2.8. The level 3-4 thing the hight is 24.

Step-by-step explanation: a^2+b^2=c^2 pythagoras theorem or whatever. Hope this helped.

What is 3/5 divided by (-4/9)?

Answers

Answer:

-1.35. As a fraction, it'd be -1 7/20

Step-by-step explanation:

1.35
= –
1.35 × 100
1 × 100
= –
135
100
= –
135 ÷ 5
100 ÷ 5
= –
27
20
= – 1
7
20

A rectangular prism has a length of 4 in., a width of 2 in., and a height of 212 in.

The prism is filled with cubes that have edge lengths of 12 in.

How many cubes are needed to fill the rectangular prism?



Enter your answer in the box.

To fill the rectangular prism, ___ cubes are needed.

Answers

Answer:

V = 1696 in3

Step-by-step explanation:

your asking how many cubes are needed to fill the rectangle which just means your asking for the volume, if you multiply L*W*H you'll get the answer

hope that helps

If It's CORRECT I will give BRAINLIEST!!!!!

Answers

Answer:

Im pretty sure its C... Step-by-step explanation: what im seeing here is 10 with the small numbers in front so it looks like scientific notation, Maria has 1 million because 1 x a number = that number, 10 multiplied by itself 6 times equals 1 million, 10 x10 = 100 x 10 = 1000 x 10 = 10,000 x 10 = 100,000 x 10 = 1,000,000. so from this we know what Larry's 10 to the power of 5 is, we need to know what 100,000 x whatever equals. If im doing this right, Larry's number is 1 million 2 hundred thousand which is greater than 1 million. (sorry if the explanation is wanky and sorry if it was wrong, im new to brainly.)

The population of a city was 60,000 in 2015 and 63,000 in 2016. The percent increase in the population from 2015 to 2016 was the same as it was from 2016 to 2017. What was the population of the city in 2017?

Answers

Answer:

The population will be 66150.

Step-by-step explanation:

3000 / 60000 = 0.05 (5% Increase)

60000 X 1.05 = 66150

Answer: Kentwood, Michigan had a population of 49,000 in the year 2013. The infrastructure of the city allows for a carrying capacity of 60,000 people. rmax ...

and the link mite help

Step-by-step explanation:Hope it helps you.

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