2x−5y−z=17
x+y+3z=19
−4x+6y+z=−20

Answers

Answer 1
You want us to answer all 3??

Related Questions

What is the slope of AB shown in the graph Below? This will help a lot of students.

Answers

Answer:

Its simply undefined

Step-by-step explanation:

The run is 0 so undefined

WE FILL HIM WITH LEAD HE A PENCIL!!!!!!!!!!!​

Answers

Answer:

whoaaaaaaa

Step-by-step explanation:

Suppose that y varies directly with x and y=12 when x=-2. What is x when y=-6
Please help me!!

Answers

9514 1404 393

Answer:

  x = 1

Step-by-step explanation:

You can work this several ways.

1) Consider the factor that gets you from the y-value of the known pair to the y-value of the unknown pair. Here, that factor is -6/12 = -1/2.

Then the unknown value of x is the known value multiplied by that same factor:

  x = (-1/2)(-2)

  x = 1

__

2) You can write the equation for a "varies directly" relationship and solve for the constant of proportionality. Then you can use that equation to find the unknown value of x.

  y = kx . . . . . . . . . . . . . . y varies directly with x

  k = y/x = 12/-2 = -6

Now we know ...

  y = -6x

Filling in the new value for y, we have ...

  -6 = -6x

  1 = x . . . . . . divide by -6

__

3) You can write a proportion. Since we want to find a value for x, it is convenient to put that in the numerator.

  -2/12 = x/-6

Multiplying by -6, we get ...

  (-6)(-2)/12 = x = 1

HELP ME ITS MY LAST PROBLEM ITS PRECAL HELP MEEEE

Answers

Step-by-step explanation:

LHS = (tan β + Sec β)(1 - sin β)

= ((sin β / cos β) + (1/cos β))(1-sin β)

= ((1+ sin β)*(1- sin β))/cos β

= (1 - sin^2 β) / cos β

= cos^2 β / cos β

= cos β

= RHS

Hence proved

PLEASE HELP NOW ITS DUE IN 5 MIN ONLY ANSWER S4 PLEASEEE

Answers

Answer:

R1 subtraction  R2 distrivution S4 9x=61 R5 division

Step-by-step explanation:

please help me. the picture can help me..​

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Answer:

i'm too lazy 2 do this rn, but just divide each price by the amount of water per pack. which ever one is the least is ur answer :p

Step-by-step explanation:

Answer:

Store 3

Step-by-step explanation:

May i have brainiest

If A and B are independent events, which equation must be true?
Α.
P(B/A) = P(A)
B.
P(B/A) = P(B)
C.
P(B/A) = P(A) P(B)
D.
P(B/A) = P(A) + P(B)

Answers

Answer:

B. P(B/A)=P(B)

Write the expression using exponents.

a⋅a⋅c⋅c

Answers

The expression using exponents we can rewrite as [tex]a^2 . c^2[/tex] .

What are exponents ?The number of times a number is multiplied by itself is referred to as its exponent. For instance, 2 to the third (written as [tex]2^3[/tex] ) means: 2 x 2 x 2 = 8. 2 x 3 = 6 does not equal [tex]2^3.[/tex] Keep in mind that a number raised to the power of one is itself.Exponentiation is the process of expressing huge numbers in terms of powers. That is, exponent refers to the number of times a number has been multiplied by itself.The key distinction is that an exponential function has its variable in the exponent, but a power function has its variable in the base.

To learn more about   exponent refer,

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what is three blus six equal to



Answers

Answer:

Three plus six: 3 * 6

When we multiply x*y, we are summing x times the same number: y ory times the same number.(x)

In our case, we are summing three times six, so: 6 + 6 + 6 = 18

We could also say we are summing six times three: 3 + 3 + 3 + 3 + 3 + 3 = 18

Nowwe can say that 6 * 3 = 18

18
I hope this helps!!!!!!!!!!!

which situation is best described by this number line?

Answers

There isn’t a number line to the question :/

Answer:

Step-by-step explanation:

Where’s the number line

Hewwo! can anyone answer this? giving brainliest to whoever explains! tysm c:

Answers

Answer:

4

Step-by-step explanation:

Basically it's dividing the pounds of dog food to the bags of food by 4

Just one more question I need this in a step by step please

Answers

Answer:

2x+20+3x+40=90

5x+60=90

5x=30

x = 6

2x+20 = 2(6)+20

12+20

=32

3x+40 = 3(6)+40

18+40

=58

Answer:

Here we can first find the value of x simply by using the concept of corresponding angles.

As we know that angle with measurement 2x+20Degree and the right angle below are corresponding as we can consider the line (underlined in red) as a transversal intersecting lines underlined in green. {PLEASE SEE THE ATTACHMENT TO SEE THE HIGHLIGHTED LINES}

So, we get 2x+20 degree = 90 degree.

=  2x+20=90

=  2x=90-20

=  2x=70

=  x= 70/2

=  x=35 degree.

Now as we know the value of x we can find the other unknown angle by substituting it in the equation for the other angle.

Therefore, 3x+40degree= 3*35+40

105+40

=  145 degrees.

find the value of 9+p when p=19​

Answers

Answer:

28

Step-by-step explanation:

9+19=28

The answer is 28 because 9+ 19 equals 28

Find the balance in the account after the given period. $4000 principle earning 3% compounded annually 6 years

Answers

Answer: it would be 3000 that’s what it is

Step-by-step explanation:

what is the answer to this question

Answers

Answer:

i think i am going to pick a random letter because i cant see it ts blocked so i guess c

Step-by-step explanation:

Pls help it’s due todY

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HAHA it was due yesterday! Hopefully you can still use my help *muffles cry laugh* answer is 2 tell me if im wrong bc im not 100% sure on this one. plz mark me brainliest, give me 5 stars, and thank meeee

some wanna look at this and help me ?​

Answers

21x+1+14x+4=180
35x+5=180
35x=175
X=5
21(5)+1
105+1
Answer

a + 4 = 6, when a = 2. true false open

Answers

True
Pls mark brainliest

Answer:

True.

Step-by-step explanation:

[tex]a+4=6[/tex]

[tex]a=2[/tex]

To see if the equation would be correct given the value of [tex]a[/tex], we have to substitute:

[tex]2+4=6[/tex]

[tex]6=6[/tex]

Since both sides of the equation are equal, the statement is true.

I need help with this question

Answers

Answer:

1/3

Step-by-step explanation:

i hope this helps you! :)

Answer:

1/3

Step-by-step explanation:

When you are subtracting frations with the same denominator, you would only subtract the numerator and keep the denominator the same.

Can someone please help, ty!! (Will mark brainliest)

Answers

Answer:

x - y = 4

Step-by-step explanation:

Hope this helped! :)

A grocery store sells cheese for $0.48 a pound. What would be the price for 6 pounds of cheese?

Answers

Answer:

$2.88

Step-by-step explanation:

0.48×6=2.88

os the right answer

$0.48 x 6 pounds = $2.88

To which subsets of the real numbers does the numbers -57 belongs?

Answers

Answer:

integer, rational number

Step-by-step explanation:

-57 is an integer because integers include negative and positive numbers that are not decimals or fractions. it is also a rational number because it can be converted into a fraction. these are subsets of the real numbers category.

what s the probality that the first card is a king and the second card is a king if the smapling is done withot replacement

Answers

Answer:

Total Probability = 1 / 221

Step-by-step explanation:

Total number of cards = 52

Total number of kings = 4

Probability (first card is a king) = 4 / 52

Probability (Second card is a king) without replacement = [4-1] / [52-1]

Probability (Second card is a king) without replacement = 3 / 51

Total Probability = [Probability (first card is a king)][Probability (Second card is a king) without replacement]

Total Probability = [4/52][3/51]

Total Probability = 12 / 2652

Total Probability = 1 / 221

explain how you would use the communitive property of multiplication to aswer 7x3. ​

Answers

Answer:

since 7 times 3 is 21

Step-by-step explanation:

it would be 7+7+7 becuase you do seven times 3

hope that helped!

Help me on these questions

Answers

2) 5:3=15:25
3)18:12=27:8

Given the formula A = pi r squared, how does the A vary in relation to the square of the radius?
a.
varies inversely
c.
varies jointly
b.
varies directly
d.
no relationship

Answers

I think it’s the third one. As the radius increases, so does the area.

Sanju wants to sell his artwork at a local fair. He has created 10 pieces of artwork and has spent $44 in creating them. He wants to make a profit of $300 at the fair. What is the price he needs to sell each piece to make that profit?

Answers

Answer:

30 dollars

Step-by-step explanation:

Sice he has to make a profit of 300 dollars if you divide 100 by to you get 30.If Sanju sells the artwork at 30 dollars he will make 300 dollars

The price Sanju needs to sell each piece to make a profit of $300 overall is $34.4.

What is profit?

The profit is the difference between the selling price and the cost price of an item.

The cost of 10 pieces of artwork is,

Cost of producing 1 piece = $44/10 = $4.4

The Profit on 10 pieces of artwork is,

Profit of each piece = $300/10 = $30

The selling price of each piece of artwork is,

Selling price of each piece = Cost of production + Profit

                                             = $30 + $4.4

                                             = $34.4

Hence, the price Sanju needs to sell each piece to make a profit of $300 overall is $34.4.

Learn more about Profit:

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Lindy owes her friend Amanda$3. If she borrows another $6, how much will she owe altogether?

Answers

Answer:

9

Step-by-step explanation:

add 3 and 6

3+6 = $9 :) hope this helps

ASAP PLZ HELP WITH THIS QUESTION I WILL MARK U AS BRAINLIST

Answers

Answer 35 cubic ft Explanation: 3.5•5•2 3.5 is the width, 5 is the heigh, and 2 is the heigh only including the sand

Answer:

............................

Step-by-step explanation:

James wants to buy a phone card for international calls when he travels to Paris this summer. He can buy a 200-
minute card for $10.50 or a 300-minute card for $18.25. Which card is cheaper to buy per minute? (2pts) Write the
number of minutes card on the answer line.

Answers

Answer:eoeould say 18.25 because for 300 minutes only for 18.25 is cheap.And yes the other one is cheaper but for the money but its only 200.Tell me would YOU want only 200 instead of 300 because 300 costs a lot more than 18.25 so that person must be getting it on sale lol HOPE THIS HELPS AND IS RIGHT!!!!! ;)

Step-by-step explanation:

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