4x+y+6z=7
3x+3y+2z=17
-x-y+z=19

Answers

Answer 1

Answer:

the 2nd one

Step-by-step explanation:


Related Questions

Pls help me slove this -2 1/3 - (-5) =

Answers

Answer:

4/3

Step-by-step explanation:

-2 1/3= -7/3

-5=-15/3

Answer:

If I'm reading this correctly, -2.33 or -2 1/3 - (-5) should equal to 2 2/3

Step-by-step explanation:

Since a minus sign is close to the minus sign inside the parantheses, you should turn the minus sign into a plus, giving you -2 1/3 + 5 which should equal to 2 2/3. Hope this helps

Solve for the missing value x 2 : 26 = 4 : x

Answers

Answer:

x=52

Step-by-step explanation:

2:26

2*2:26*2

4:52

Calculating the mean: data displays
Find the mean of the data in the bar chart below.
students
Size of each teacher's class
16
14
12
10
Number of students
8
6
4
SH
2.
0
Mr. Brehan
Mrs. Jones
Mr. Singh
Ms. Garcia

Answers

Answer:

Step-by-step explanation:

The answer is 12 students

Answer:12

Step-by-step explanation:

Select the best answer for the question.
9. What is 36:39 in simplest form?
O A. 36:39
O B. 13:12
O C. 1.3
O D. 12:13

Answers

Answer:

d

Step-by-step explanation:

12*3=36 and 13*3=39

4. These two triangles are scaled copies of one another. The area of the smaller triangle
is 9 square units. What is the area of the larger triangle? Explain or show how you
know.

Answers

Answer:the larger triangle could be any number more than 9 square units.so, for example, ten units is the least, and infinity is the max!

Step-by-step explanation:

Complete the table.
x=0 and 4
y=1/3x+2

Answers

Answer:

sorry man but I don't understand what we have to complete, is it x? and if x is what we have to find, what does the and 4 mean? if you can upload a photo it would be better.

Step-by-step explanation:

wish you luck

Write the interval as an inequality:
(-00, -8]

Answers

Answer:

[tex]x\leq -8[/tex]

Step-by-step explanation:

One night in January, the temperature in Alaska is -16℉. The next day, the temperature is half of what it was the night before. What is the temperature? One night in January, the temperature in Alaska is -16℉. The next day, the temperature is half of what it was the night before. What is the temperature?

Answers

Answer:

-8 degrees

Step-by-step explanation

Half of negative 16 would be negative 8.

Answer:

-8

Step-by-step explanation:

-16 ÷ 2 = -8

You could also do:

16 ÷ 2 = 8

and then put a negative in front of 8

And to prove it's true,

8 x 2 = 16

-8 x 2 = -16

choose the fraction that has not been reduced to simplest form

Answers

Answer: What are the fractions

Step-by-step explanation:

Answer:

um what are the fractions???

Step-by-step explanation:

Need help ASAP please! Simplify these.

Answers

Answer:

x³/2

8x³/7

5x²/3

3/4x³

Which number is a factor of 20 but not a multiple of 10

Answers

1,2,4, and 5 all are factors of 20 and not over/ multiples of 10

Answer:

4 is a factor of 20 but not a multiple of 10

Follow me welcome.

Solve each system of equations algebraically. For each one, explain what the solution (or lack thereof) tells you
about the graph of the system.

Solve A and B

PLEASE HELP ASAP!!!



Answers

Answer:

a: no solutions

b: (2, 3)

Step-by-step explanation:

a:

In both equations, the slope of x is the same, but the y-intercept is not, which means they are parallel. Therefore, this system of equations has no solutions.

b:

Since both of the equations are equal to y, we can set them equal to each other:

[tex]\frac{1}{2}x^2+1= 2x-1\\x^2 + 2 = 4x - 2\\x^2-4x+4=0[/tex]

We can solve by factoring (by finding a number that multiplies to 4 and adds up to -4):

(x-2)^2 = 0

x = 2

Now, to find y, plug-in x to any of the equations:

y = 2*2-1 = 3

Therefore, the solution to this system of equation is (2, 3)

I hope this helped.

Task: Use the following situation to answer Parts A and B Instructions At noon, a tank contains 100 gallons of water. The table shows the input and output of water from pipes A, B, and C. The pipes begin operating simultaneously at noon. A B C Pipe Flow IN (gallons per minute) a (2) = 172 6(2) = 80 Flow OUT (gallons per minute) c (2)=30r Complete each of the 2 activities for this Task. Activity 1 of 2 Let T (2) represent the amount of water in the tank x minutes after all of the pipes A, B, and C are opened. Which of the following functions represents T (x)? O A T (2) = 100 + a(z) +b(2) - c(x) OCT (x) = 100 + a (x) +b(2) + c(2) OBT () = a (x) + b() +(2) ODT (2) = a (x) +b(x) - c(:) Activity 2 of 2 Using the equation, after how many minutes will the tank be empty?​

Answers

Answer:

1. Option C2. Never

Step-by-step explanation:

Refer to attached for the table and clearer version of the question

As per table A and B pipes feed the tank and C is the outlet

Considering initial volume of 100 gallons, the amount of water in the tank after x minutes is:

T(x) = 100 + a(x) + b(x) - c(x), this is option C.

We can calculate when tank is going to be empty:

0 = 100 + 25x + 10x - 30x0 = 5x + 1005x = -100x = -20

Since we got negative number, the tank is not going to be empty when all 3 pipes are open.

The function which represent T (x) for the tank which contains 100 gallons of water and input and output of water from pipes A, B, and C is,

[tex]T(x)=100+a(x)+b(x)-c(x)[/tex]

The tank will not be empty when all the three pipes are in operation.

What is a function?

If we have two sets A and B as:

[tex]A = \{a_1, a_2, ... \}\\B = \{b_1, b_2, ... \}[/tex]

Then, function

[tex]f:A \rightarrow B[/tex]

is a connection of elements of A to B such that one element of A is connected to only single element of B, and not many.

The connected pairs are then written as:

[tex]\{(a_i_1,b_j_1), (a_i_2, b_j_2), ... \}[/tex]

Under the function f.

The table shows the input and output of water from pipes A, B, and C.

Pipe                                        A                         B                        C

Flow In (gallons/minute)      a(x)=25x             b(x)=10x

Flow Out (gallons/minute)                                                       c(x)=30x

The pipes begin operating simultaneously at noon.  Let T (2) represent the amount of water in the tank x minutes after all of the pipes A, B, and C are opened.

At noon, a tank contains 100 gallons of water. In the above table A and B shows the inlet of water while C shows the out let of the water.

So, 100, A and B added in the function while C will be subtracted as,

[tex]T(x)=100+a(x)+b(x)-c(x)[/tex]

Thus, the function in option C represents T (x).

Now use this equation, to find the number of minutes for the tank be empty. For this equation, the equation equal to zero as,

[tex]T(x)=100+25x+10x-30x[/tex]

[tex]0=100+25x+10x-30x\\-100=5x\\x=-20[/tex]

This negative value of x tells that if all the three pipes are open, the tank is never become empty completely.

Thus, the function which represent T (x) for the tank which contains 100 gallons of water and input and output of water from pipes A, B, and C is,

[tex]T(x)=100+a(x)+b(x)-c(x)[/tex]

The tank will not be empty when all the three pipes are in operation.

Learn more about the function here;

https://brainly.com/question/13395697

The tank for a car holds 17 gallons. The gasoline gauge shows the tank is 1/4
full. How much gas is still in the tank? Give your answer as a whole number or as a mixed fraction reduced to the lowest terms.

Answers

Answer:

4 1/4 gallons

Step-by-step explanation:

The amount of gas in the tank is 1/4 of 17 gallons.

1/4 * 17 gallons = 0.25 * 17 gallons = 4.25 gallons = 4 1/4 gallons

4 1/4 or 17/4

What is a mixed fraction?

A fraction represented with its quotient and remainder is a mixed fraction. For example, 2 1/3 is a mixed fraction, where 2 is the quotient, 1 is the remainder. So, a mixed fraction is a combination of a whole number and a proper fraction.

Step 1: Multiply the denominator with the whole number. Step 2: Add the numerator to the product obtained from step 1. Step 3: Write the mixed fraction with the sum obtained from step 2 as the numerator and the denominator of the original fractional part of the mixed fraction.

Given,

Full tank capacity = 17 gallons

gasoline gauge shows = 1/4 of full tank

= 1/4 of 17 gallons

= 17/4 gallons

= 4 1/4 gallons

Read more about mixed fraction here:

https://brainly.in/question/2753661

#SPJ2

1. A pitched roof is built with a 1:3 ratio of rise to span. If the rise of the roof is 10 meters, what is the span

Answers

Answer:

The answer is B) the span of the roof is 4

Step-by-step explanation:

The span is 30 meters if the pitched roof is built with a 1:3 ratio of rise to span.

What is the ratio?

It is described as the comparison of two quantities to determine how many times one obtains the other. The proportion can be expressed as a fraction or as a sign: between two integers.

We have:

A pitched roof is built with a 1:3 ratio of rise to span

rise/span = 1/3

rise = 10 meters

10/span = 1/3

span = 3×10 = 30 meters

Thus, the span is 30 meters if the pitched roof is built with a 1:3 ratio of rise to span.

Learn more about the ratio here:

brainly.com/question/13419413

#SPJ2

Finding area of rectangle

Answers

Answer:

A=wl

w=width

l=length

Step-by-step explanation:

Answer:

a=lw

Step-by-step explanation:

If you have a rectangle that was 2 inches wide, and 4 inches long, you would multiply the length(l) by the width(w) to get the area(a).

If anyone solves this question, I'll give 10pts.

THE QUESTION:-
Which no. is equivalent to
3⁴/3² ?

OPTIONS:-

A. 2
B. 9
C. 81
D. 728


Answers

Answer:

9

Step-by-step explanation:

It’s “B” I got it right on my test!

On a number line, how are the locations of 9 and -9 related?
A.
The two numbers are opposites in value and lie in opposite direction on the number line.
B.
The two numbers are opposites in value and they lie in the same direction on a number line.
C.
The two numbers are equal in value and lie in opposite direction on the number line.
D.
The two numbers are equal in value and they lie in the same direction on a number line.

Answers

Answer:

none.

Step-by-step explanation:

how can you like put a subtract sign next to a number like lol!! how does it make sence!?!? i think the CORRECT answer is apple bobbing. i think this because when you apple bob for 9 apples it like subtracts it from the apple water!! currently crying because your question doesnt make sence like its obv apple bobing

The set of all numbers greater than -1 and less than 0.

Answers

Answer:

I would just think that it is 0

Step-by-step explanation:

0 is greater then -1 and it is the exact same thing and not less than 0

Answer:

-0.5

Step-by-step explanation:

<________-1_-0.5_0__1_________>

its greater than -1 and less than 0

15. Which of the following is an equation for the line that passes through
(-4,-3) and (-2, 3)?

Answers

Answer:

An equation for the question above is y = 3x + 9.

the ratio of lily's programing to tina's programing speed is 3:5. lily can write six programs per day. if lily and tina work together to write 240 programs, how many days are needed

Answers

Answer:

which principle prevents a brach from abusing  its power

Step-by-step explanation:

PLSSSS What is the smallest positive number that can be added to 55 so that the resulting number and 45 have 9 as their greatest common factor?

Answers

Answer:

8

Step-by-step explanation:

Answer:

8

Step-by-step explanation:

       

If the vertex of an absolute value function is (1.-2) and another point on the
graph is (0,2), find a and write the function in the form of g(x)=a/x-h1+k

Answers

Answer:

Maybe its y= b-x

Step-by-step explanation:

Consider this simplified algebraic expression:
12y - 5x + 15
Which of the following could be the original expression? Check all that apply.
12y – 20x + 15x + 15
U 10 – 5x + 5+ 6g - 6g
O 15x + 12y - 10x + 15
2xy + 10y - 7x + 15
14 - 4x + 15y - x +1-3y

Answers

Answer:

it is the first one and the last one

Step-by-step explanation:

Please help ASAP !!!!!!

Answers

Answer:

7 or 8

Step-by-step explanation:

7 when each member does at least one of the three,and 8 when some do neither of the three.


Which of the following is an obtuse triangle?
Triangle A
Triangle B
Triangle C
Triangle D

Answers

Answer:

triangle B

Step-by-step explanation:

It is the only triangle with an angle wider than 90

5 2/5 as a mixed number

Answers

Answer:

Mixed numbers have a whole number followed by the fraction (2 1/2). You would say "two and one half." The other format is an improper fraction where the numerator is greater than the denominator (5/2). Mathematicians would say that is five halves.

Answer:

27/5 I think um I have to fill out the question so ya

Stacey and her friend went to Outback Steakhouse and spent $45. They wanted to leave a 20% tip, because the service was terrific. What was the total cost of the bill with tip?

Answers

Answer:

$54

Step-by-step explanation:

20% of $45 is $9. (45 * 2/10)

Add 9 to 45 and you get 54

Please mark brainliest thank you!!

I need help ASAP please

Answers

A circle is 360 degrees so 360 = b + 96 + 209

360 = b + 305

b = 55 degrees.

5 = w/2.2 (This means w is divided by 2.) *

Answers

Answer: w = 11

Step-by-step explanation: 5x2.2=11 so 11/2.2=5.

Answer:

11

Step-by-step explanation:

khan said so

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