Solve the system x+2z=30 y+z=12 z=1

Answers

Answer 1

Answer:

x=28 y=11 z=1

Step-by-step explanation:

plug in 1 for z in x+2z=30 to get x+2(1)=30. Then you should get x+2=30 which is x=28.

Then, plug 1 in for the second equation of y+z=12 so you get y+1=12. Then you should get y=11.


Related Questions

Plz help! Is this right? Question is below!

Answers

Plot each point then find the perimeter!

James decides to invest money in Wal-Mart. As a shareholder, he has the advantage of

(select all that apply)


A. limited liability


B. limited life


C. unlimited liability


D. double taxation


E. ease of start up

Answers

Answer:

A. limited liability

Step-by-step explanation:

Because James has become a shareholder by investing in Walmart, he has the advantage of limited liability. This basically means that he shares in both the gains and the losses of Walmart's business decisions but only up to the amount that he has invested into it. Meaning that if James invested a total of $2000 and Walmart goes under, then he will lose all $2000 but not more than that.

1-6. Indicate whether each table or graph represents a proportional
relationship or a non-proportional relationship.

pls answer! nobody answer right and I am sick of failing this is for a mastery

Answers

Answer:

Step-by-step explanation:

Proportional relationship means,

x ∝ y

x = ky

[tex]\frac{x}{y}=k[/tex] where 'k' is the proportionality constant.

From table (1),

[tex]\frac{1}{5}=\frac{2}{9}\neq \text{Constant}[/tex]

Therefore, relationship is not proportional.

From table (2),

[tex]\frac{1}{6}=\frac{3}{18}=\text{constant}[/tex]

True.

So the relationship will be proportional.

From table (3),

[tex]\frac{\text{hours}}{\text{Miles}}= \frac{2}{110}=\frac{5}{175}=\frac{1}{55}[/tex]

Which is constant.

Therefore, relationship will be proportional.

From table (4),

[tex]\frac{\text{Hours}}{\text{Paid}}=\frac{3}{29.25}=\frac{5}{48.75}=0.103[/tex]

Which is constant for every term.

Therefore, relationship will be proportional.

Write an equation to represent each statement
I
1. The product of 3 and a number increased by six is 24.1

Answers

Answer:

3x + 6 = 24.1

Step-by-step explanation:

The product of 3 and a number (x) increased (adding) by 6 is 24.1 (the result).

Simplify using the associative property.
(-4) • (-7.2) • (-5)

Answers

Answer: -144

Step-by-step explanation:

all you have to do is multiply -4 times -7.2 times -5.

The dots between the numbers are multiplication signs.

I need some help, please

Answers

Answer:

0

I hope this helps!

Just tell me why the answer is no ( Will give Brainliest)

Answers

Answer:

No, they are not. While they are similar terms, they do not have the same values within the terms. Like how 3 is not -2.

Answer:

No because there is no way

Step-by-step explanation:

What’s 3•-30+15

And the dot is multiplication!

Answers

Answer:

-75

Step-by-step explanation:

3(-30)=-90

-90+15 is -75

the sum of 17 and a number X is equal to 20

Answers

17+x=20, subtract 17 from both sides, x=3

Fifty-seven and 100 dollars as a numeral is which of the figures below?
a. $56.70
c. $34.50
b. $53.40
d. $57.50

Answers

Answer:

56.70

Step-by-step explanation:

Find the value of p. p − 1 = 5 p + 3p − 8

Answers

Answer:

p = 1

Step-by-step explanation:

[add like terms]

p - 1 = 8 p - 8

[add 8 to both sides]

p + 7 = 8 p

[subtract p from both sides]

7 = 7 p

[divide each side by 7]

p = 1

Answer:

P=1

Step-by-step explanation:

collecting like terms we have

p - 5p - 3p = -8 + 1

-7p = -7

divide both sides by -7

p = 1

FASTTTTTTTTT PLEASEEEEEEEEEEE

Answers

It’s the answer is 68

Will give major points! and brainliest answer! to someone who gives a good answer!

Answers

Answer:

A. 2(3x+15) + 2(6x+6) = 96

B. x=3

Step-by-step explanation:

A.  The original equation would be (3x+15) + (6x+6) + (3x+15) + (6x+6)

Step 1: you can simplify this to 2(3x+15) + 2(6x+6) because there are two of each of each equation.

Step 2: The question says that the perimeter equals 92, and because it is an equation, you should put =92 at the end.

B. Step 1: You should solve out each question separately, so                  2(3x+15) = 6x + 30. This is because 2 × 3x = 6x and 2 × 15 = 30.

2(6x+6) = 12x + 12 because 2 × 6x = 12x and 2 × 6 = 12.

Step 2: Add the two: 6x + 30 + 12x + 12

6x + 12x = 18x and 30 + 12 = 42.

Step 3: Now we have a new equation: 18x + 42 = 96

Solve this like a normal equation. (Subtract 42 from both sides to get         18x = 54. Then divide by 18 on each side. This will give you x=3)

give him brainliest pls

Solve the equation g+ (-20) = 9.

Answers

Answer:

g=29

Step-by-step explanation:

g+(-20) is the same as g-20.

We need to get the g by itself, so we then add twenty to both sides to get g=29

Hope this helps :-)

Answer:

29

Step-by-step explanation:

g+(-20)=9

g-20=9

g=9+20

g29

IND 11. Kim is arranging magazines on shelves. She has 18 sports magazines and 24 news magazines. Each shelf will have the same number of sports and news magazines. If Kim must place all of the magazines on shelves, what are all the possible numbers of shelves Kim can use?​

Answers

Find the multiples of each number:

18: 1 , 2 , 3 , 6 , 9 , 18

24: 1, 2, 3, 4, 6 , 8, 12, 24

Now find the matching numbers:

1 , 2, 3 , 6

NEED HELP ASAP (timed test)
chase drew the graph of f(x)=x. he translated the graph 5 units up to get the graph of g(x).next he translated the graph 7 units to the left to get the graph of h(x).which of the following is an equation of h(x)? A.h(x)=(x+7)+5 B.h(x)=(x-7)+5 C.h(x)=(x+7)-5 D.h(x)=(x-7)-5
please explain too thank you! :)

Answers

Answer:

b

Step-by-step explanation:

the awnser is b

Which transformation will create a similar and a congruent triangle?
Rotation
Reflection
Dilation
Translation

Answers

I believe it’s translation

what is -19/20 as a decimal

Answers

Answer:

-0.95

Step-by-step explanation:

Answer:

-0.95 in decimal

Step-by-step explanation:

Will mark BRAINLYLIST if you help plzzzzz!!!!!

Answers

Answer. x- 56
Explanation. The top two angles are the same, therefore, 62+62= 124. Since we know a triangle MUST be 180°, 180-124= 56. I hope this is correct and good luck :))

Does anyone know What 0.6 divided by 36 is

Answers

36/ 0.6 is 60 ex: use a calculator

Answer:

1/60

Step-by-step explanation:

0.6/36 = 0.0166666667

1/60= 0.0166666667

Solve 3x−5 = 9. (1 point) a x = −3 b x = 2 c x = 7 d x = 8

Answers

Answer:
d) x = 8

Explanation:
3x - 5 = 9
(3x / 3) - 5 = 9/3
x - 5 = 3
x (- 5 + 5) = 3 + 5
x = 8

Answer:

x=7

Step-by-step explanation:

x 3^(x-5)=9 (Original Question)

Check attatched image for explanation

11. Kevin started a ping pong club at his school,
and the table shows the number of participants
in the club over several years. Find the rate of
change in the number of participants.

Answers

Answer:

16

Step-by-step explanation:

Add 16

Answer:

16

Step-by-step explanation:

(-4,7) (-6,-3) determien the slope of the linePLEASE iM bad At MATH

Answers

Answer:

7-(-3)/-4-(-6)

10/2

y=5x

Step-by-step explanation:

Answer:

the slope is 5.

Step-by-step explanation:

the equation for slope is y2-y1/x2-x1

the points are (-4,7), (-6, -3)

label the points:

x1: -4

y1: 7

x2: -6

y2: -3

Now, plug it into the equation

-3-7/-6--4

-10/-2

the slope is 5

Hope this helps!

Can you guys help me please.

y+2=-3(×-4)
complete the missing value in the solution to the equation.

____,-2)​

Answers

Answer: 4

Step-by-step explanation:

Hope this helps

Answer:

(2.666667, -2)

Step-by-step explanation:

y+2 = -3x+12

(-4 times -3 = positive 12)

subtract 2 from both sides

y=-3x-10

-2=-3x-10

add ten to both sides

8=-3x

8/-3=

2.666667

Someone help I really need it.

Answers

Answer:

c

Step-by-step explanation:

C

12 = x

12 times 12 = 144

if y=24 when x=6, find y when x=-4.

Answers

Answer:

[tex]\huge\boxed{y=-16}[/tex]

Step-by-step explanation:

We have to note that this represents a proportional relationship. This means that every time x increases by 1, y will increase by a proportional value.

In order to solve for proportions, we can create a proportion fraction which basically puts two variables over each other. Let's put x over y.

[tex]\frac{x}{y}[/tex]

We know that in the first fraction, x=6 and y=24.

[tex]\frac{6}{24}[/tex]

And we know that x=-4 but we have an unknown y value.

[tex]\frac{-4}{y}[/tex]

We can now set these proportions equal to each other and solve for the missing y using cross products.

[tex]\frac{6}{24}=\frac{-4}{y}[/tex] [tex]y = (24 \cdot -4) \div 6[/tex] [tex]y = -96 \div 6[/tex] [tex]y = -16[/tex]

Hope this helped!

will mark brainles if answered quickly

Answers

Answer:

A {-3, -2, -1, 0, 1, 2, 3}

Answer:

A

Step-by-step explanation:

Rational numbers are whole numbers

If x<0 and y=0 where is the point (x,y) located

Answers

Answer: Anywhere along the negative x axis

For example, the point could be (-1,0) or (-2,0)

All that matters is that x is negative and y = 0

Any point is on the x axis when y = 0

The negative portion of the x axis is to the left of the y axis.

WILL GIVE BRAINLIEST
The image of the point (7, -2) under a reflection across the x axis is (-7,2) true or false

Answers

Answer:

no it is(7,2)

Step-by-step explanation:

Please help me !! 20 POINTS.

Answers

Answer:

699 + 329 = 1,028

1,028 × 3 = 3,084

Step-by-step explanation:

you add the prices together and and tha answer you get, you multiply by 3.

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