Select the correct answer.
What is the value of x in this linear system?
2x + 8y – z = -9
y + z = 7
-x– y + z = 8
A.0
B.-7
C.7
D.-1

Answers

Answer 1
I. Would go for B which is -7

Related Questions

Alex went to the grocery store and bought 1 pound of oranges, 0.75 pounds of bananas, and 1.255 pounds of apples. How much did all of his produce weigh?

Answers

Solontendras qie dividir  075  liego 1255 y tines que saber cuento. Pesa una libra

Write this polynomial in standard form:
x^5-6x^5+8x^4

Answers

Answer:

-6x^5+x^5+8x^4

Step-by-step explanation:

Answer:

-5x^5 + 8x^4

Step-by-step explanation:

you combine like terms with the ones that are to the 5th power and then add 8x^4

Manny's muffins sells 50 muffins each day. 12 of these are blueberry. If they sell a 150 muffins tomorrow, how many blueberry muffins can they expect to sell?

Answers

36 I do believe is the answer

Answer:

36 muffins

Step-by-step explanation:

[tex]\frac{12}{50} = \frac{x}{150}[/tex]

50 goes into 150 3 times so multiply 12 by 3 to get the value of x

12 · 3 = 36

What is the actual height of the building shown in the model?

Answers

Answer:

The actual height is 150ft

Step-by-step explanation:

Given

[tex]Width : Height = 2cm : 5cm[/tex]

[tex]Actual\ width = 60ft[/tex]

Required

Determine the actual height

Substitute 60ft for width in: [tex]Width : Height = 2cm : 5cm[/tex]

[tex]60ft:Height =2cm:5cm[/tex]

Express as fraction

[tex]\frac{60ft}{Height} =\frac{2cm}{5cm}[/tex]

[tex]\frac{60ft}{Height} =\frac{2}{5}[/tex]

Make height the subject

[tex]Height = \frac{5}{2} * 60ft[/tex]

[tex]Height = 5 * 30ft[/tex]

[tex]Height = 150ft[/tex]

Answer:

Step-by-step explanation:

1 cm represents 30 ft

height of building = 5 cm × 30 ft/cm = 150 ft

What was the temperature in the city with an elevation of -9?

Answers

Answer:

7(u will trace the _9 in x axis to y axis where the blue dot is the value there will be our answer and that is 7)

??????????????????????????

Answers

The answer is 12 if you want me to explain reply to this comment

Answer

I believe it is 1/12

Step-by-step explanation:

as it is 24 ft tall, and then the model is 2 ft tall

22 ft is subtracted

so basically for every 12 ft one is added to the model

so 1/12 should be the ans

Please help I will give brainliest:) hurry! Answer carefully plss

Answers

Y = -3x^2 +4 is the answer to this problem

How can I figure this out? What is |-9-3|?

Answers

Answer:

9-3

Subtract 3 from 9 and you get 6

Does Allena uses 1/2 gallon or less than 1/2 of water

Answers

Answer:

is there anything to add to that? or is that it

Find the sum of 5X +20 and the opposite of 20
________ _________ ________

Answers

Answer:

-5x

Step-by-step explanation:

im in middle school but imma try my best :)

5x+20= 25

25-20= -5x

Awnser: -5x

hope dis helped

In one survey, the sizes of women we distributed normally about the mean, the mean of the data is 7, and the standard deviation is 1.5. about what percent of the women are between a 5.5 and 8.5 shoe size?


68%
34%
80%
15%​

Answers

Answer:

it's 68%

just did the homework lol

Indicate whether the function represents an exponential growth or decay.

Answers

Answer:

1) decay

2) growth

3) growth

Step-by-step explanation:

A generic exponential function can be written as:

f(x) = A*(r)^x

Where:

A is the initial amount of something.

r is the rate of growth.

x is the variable, usually, represents time.

if r > 1, we have an exponential growth.

if r < 1, we have an exponential decay.

1) f(x) = (3/4)^x

in this case we have:

A = 1

r = (3/4) = 0.75

Clearly, r < 1.

Then this is an exponential decay.

2) f(x) = (1/6)*4^x

In this case we have:

A = (1/6)

r = 4

Here we have r > 1.

Then this is an exponential growth.

3) f(x) = (1/4)*(5/2)^x

in this case we have:

A = 1/4

r = 5/2 = 2.5

here we have r > 1, then this is an exponential growth.

i know mia is right but what’s the explaining?

Answers

Answer:

Just explain why you chose mia..

Step-by-step explanation: Why do you think mias right?

Answer:

Mia is right

Step-by-step explanation:

But the reason is because y=4+6x mark is going over the line and he needs to make sure its accross.

i need a reduced mixed number from 12(x-6)=2(x-9)

Answers

Step-by-step explanation:

12×x-12×6=2×x-2×9

12x-72=2x-18

12x-2x= -18+72

10x = 54

x =54/10

x = (5)\4/10

Find the value of x in each diagram.

Answers

Answer:

4. 25 5. 80 6. 30

Step-by-step explanation:

All triangles add up to 180.

The triangle in #4 is right, so 90° + 65° = 155°

180° - 155° = 25°

x=25

#5.

50° + 50° = 100°

180° - 100° = 80°

x=80

In #4 the triangle is an equilateral, so all the angles will be equal. 2x + 2x + 2x = 180

6x = 180

x = 30

Step-by-step explanation:

The sum of interior angles in a triangle is equal to 180°

Two of the angle measures are given in each triangle so to find the third angle measurement we need to subtract the sum of two of the interior angles

4.

180 - (65 + 90) = x

180 - 155 = x

25 = x

5.

180 - (50+5) = x

180 - 100 = x

80 = x

For the 6th question all side lengths are equal so the angle measures also equal and 60 each

2x = 60

x = 30

Given: −3(a–b) < 0, which is the greater: a or b? Give numerical examples.

Answers

Answer:

a

Step-by-step explanation:

a = 3

b = 2

divide by -3, change the sign:

(a-b) > 0

a always has to be greater than be to be true

Answer: a > b

Start Learning and Start Growing

Help pls!!!! Pls explain how you got the answer if you can!!! Have a blessed day
Also if you don’t know the exact answer answer and comments. And pls don’t waste my points this assignment is very important

Answers

Step-by-step explanation:

for perimeter you just add up all of the sides so :

(x+4) +( 2x)+(4x-2)+(3x-1) = 10x +1

WHO WANTS BRAINLIEST FOR HELPING ME!
also can u explain how to solve ;[

Answers

Answer:

20

Step-by-step explanation:

The equation for area of a triangle is base times height divided by two.

Need a little help with this one problem! All help appreciated!

Answers

Answer:

A. Magic carpets

B. Carpet Brites

C. Carpet Brites

Step-by-step explanation:

70 x 15 = 1050 + 10 = 1060

60 x 15 = 900 + 30 = 930

PLEASE I NEED HELP I GOT A PUPPY AND IM EXHAUSTED HE DOESNT SLEEP AT NIGHT

Answers

Answer:

False

Step-by-step explanation:

It is false because the graph of [tex]y=x^{2}[/tex] does not passes through the point [tex](16,4)[/tex].

x = 16

y = 4

Substitute

[tex]4=16^{2}[/tex]

[tex]4=256[/tex]

Since 4 is not equal to 256, the answer is false.

Answer:

i hope this helps because i have a dog too and it is a husky that is one-years-old. oh and it is false

Step-by-step explanation:

4≠224. ∴The functions whose graphs include the point (16, 4) is y = x−12.


Stevie bought a bag of lollipops. The bag contained 30 lollipops and 6 of them were grape flavored. What percent of the lollipops were grape flavored?​

Answers

The answer to your question is 20%

In a baseball card collection, 40% of the cards are worth more than $100. If 12 cards in the collection are worth more than $100, how many total baseball cards are in the collection?

Answers

Answer:

30

Step-by-step explanation:

Total number of cards = number of cards worth more than 100  divided by the rate of those cards among total cards = 12/40% = 30

Can someone help me? I'll reward points + brainalist

Answers

The answer for the following question is 12

as

Circumference of the circle = 2TTr

= 2 x 22/7 x 12

= 44 / 7 x 12

= 75.4285714286

Which of these is the domain and range
for the parent function of 2(x-5)° +3 ?

Answers

Domain:(-∞, ∞)
Range:{y|y=5}

Chloe wants to give her apartment a more elegant look, so she decides to make drapes for her 6 windows. She plans to make 2 drapes for each window. Each drape will be 84 inches long. How many yards of fabric should she buy for her new drapes?​

Answers

Answer:

84 yards

Step-by-step explanation:

1008 inches converts to 84 yards

If θ is an angle in standard position whose terminal side lies in quadrant III and sin θ=-√3/2, find the exact value of the tan θ

Answers

Answer:

C) √3

tanθ = √3

Step-by-step explanation:

Step:-1

Given that  θ be an angle in standard position whose terminal side

Given that the angle

                 sinθ = [tex]\frac{-\sqrt{3} }{2}[/tex]

Given that the Opposite side  AB = [tex]\sqrt{3}[/tex]

                        Hypotensue     AC = 2

Step(ii):-

By using Pythagoras theorem

                        AC² = AB² +BC²

                        BC² = AC² - AB²

                       BC²  = 4 - (√3)²

                               = 4-3

                         BC = 1

    Adjacent side(BC)  = 1

Step(iiI):-

Given that 'θ' lies in the third quadrant so tanθ is positive

                     tanθ = [tex]\frac{AB}{BC} = \frac{\sqrt{3} }{1}[/tex]

                       

Answer:

b. -1/2

Step-by-step explanation:

:)

felixs total credit card balance is described by the following function f(p)=p(1.30). if felix owes 2500, what is the total bill plus interest

Answers

Given:

Felix's total credit card balance is described by the following function

[tex]f(p)=p(1.30)[/tex]

To find:

The total bill plus interest if Felix owes 2500.

Solution:

We have,

[tex]f(p)=p(1.30)[/tex]

Where [tex]p[/tex] is the amount Felix owes.

Putting [tex]p=2500[/tex] in the given function, we get

[tex]f(2500)=2500(1.30)[/tex]

[tex]f(2500)=3250[/tex]

Therefore, the total bill plus interest is 3250.

Solve the equation. 7x = 3x^2 - 1

Answers

Answer:

Step-by-step explanation:

Answer:

If you still need help search up Mathaway it gives u the answer to all your problems and it gives a step by step explination

Step-by-step explanation:

Subtract

3

x

2

from both sides of the equation.

7

x

3

x

2

=

1

Add

1

to both sides of the equation.

7

x

3

x

2

+

1

=

0

Use the quadratic formula to find the solutions.

b

±

b

2

4

(

a

c

)

2

a

Substitute the values

a

=

3

,

b

=

7

, and

c

=

1

into the quadratic formula and solve for

x

.

7

±

7

2

4

(

3

1

)

2

3

Simplify.

Tap for more steps...

x

=

7

±

61

6

The final answer is the combination of both solutions.

x

=

7

+

61

6

,

7

61

6

The result can be shown in multiple forms.

Exact Form:

x

=

7

+

61

6

,

7

61

6

Decimal Form:

x

=

2.46837494

,

0.13504161

a fruit company delivers its fruit in two typed of boxes: large and small. A delivery of 2 large boxes and 3 small boxes has a total weight of 72 kilograms. A delivery of 6 large boxes and 5 small boxes has a total weight of 162 kilograms. How much does each type of box weigh?

Answers

A fruit company delivers its fruit in two types of boxes: large and small. A delivery of
2
large boxes and
3
small boxes has a total weight of
83
kilograms. A delivery of
4
large boxes and
8
small boxes has a total weight of
197

What are 2 factors of 72y + 108z?

Answers

72y+108z Factored is 36(2y+3z). So I guess the 2 factors will be 2y and 3z??
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