Solve the system: 2x – 6y + 4z = 3
-3x + 9y – 6z = -3
5x – 15y + 10z = 5

Answers

Answer 1

Answer:

7

Step-by-step explanation:

i hope this is right, I did the math


Related Questions

Graph the image of the given triangle after the transformation with the rule (x, y)→(x+3, y−5).

Select the "Polygon" button from the tool bar to plot your triangle. You may use the "Move" button to move the triangle after it is created.

Answers

Answer:

Step-by-step explanation:

The town of KnowWearSpatial, U.S.A. Operates a rubbish waste disposal facility that is overloaded if its 4749 households discard waste with weights having a mean that exceeds 27.21 lb/wk. For many different weeks, it is found that the samples of 4749 households have weights that are normally distributed with a mean of 26.86 lb and a standard deviation of 12.82 lb. What is the proportion of weeks in which the waste disposal facility is overloaded? P(M > 27.21) =

Answers

Answer:

0.48911

Step-by-step explanation:

The formula for calculating a z-score is is z = (x-μ)/σ,

where x is the raw score, = 27.21 Ib

μ is the population mean = 26.86 lb

σ is the population standard deviation. = 12.82 lb

z = 0.027301

Probability value from Z-Table:

P(x<27.21) = 0.51089

P(x>27.21) = 1 - P(x<27.21) = 0.48911

The proportion of weeks in which the waste disposal facility is overloaded is

0.48911

find the equation of the line. use exact numbers

Answers

Answer:

[tex]y = 0.5x + ( - 3)[/tex]

or

[tex]y = 0.5x - 3[/tex]

In the adjoining equilateral [tex] \triangle[/tex] ABC , AD ⊥ BC and AC = 2a units. Prove that sin 60° = [tex] \sf{ \frac{ \sqrt{ 3} }{2} }[/tex] .

Answers

Answer:

See Below.

Step-by-step explanation:

Since ΔABC is an equilateral triangle, this means that ∠A, ∠B, and ∠C all measure 60°.

Furthermore, all sides of the triangle measure 2a.

We know that AD⊥BC. Since this is an equilateral triangle, any altitude will be a perpendicular bisector. Therefore, BD = DC, ∠CAD = 30° and ∠C = 60°.

Additionally, the measures of the segments are: BD = DC = (2a) / 2 = a.

Let’s use the right triangle on the right. Here, we have that DC = a and AC = 2a.

Recall that sine is the ratio of the opposite side to the hypotenuse. Therefore, sin(C) or sin(60°) will be AD / AC. We can find AD using the Pythagorean Theorem:

[tex]a^2+b^2=c^2[/tex]

a is DC, b is AD, and c is AC.

Substitute in appropriate values:

[tex]a^2+(AD)^2=(2a)^2[/tex]

Solve for AD:

[tex]\displaystyle \begin{aligned} a^2+(AD)^2&=4a^2\\(AD)^2&=3a^2\\AD&=\sqrt{3a^2}=a\sqrt{3}\end{aligned}[/tex]

Sine is the ratio of the opposite to the hypotenuse:

[tex]\displaystyle \sin(C)=\sin(60\textdegree)=\frac{\text{opposite}}{\text{hypotenuse}}[/tex]

Substitute:

[tex]\displaystyle \sin(60\textdegree)=\frac{AD}{AC} = \frac{a\sqrt{3}}{2a}[/tex]

Simplify. Hence, regardless of the value of a:

[tex]\displaystyle \sin(60^\circ)=\frac{\sqrt3}{2}[/tex]

PLS HELP ASAP THANKS ILL GIVE BRAINLKEST PLS THANKS PLS

Answers

Answer:

( 1, -2)

step-by-step explanation:

original coordinates of C: (4, -2)

if reflected over y-axis: use the formula: (x,y) → (-x,y)

new coordinates: (-4, -2)

then if translated 5 units horizontally, there will be change in x axis:

new coordinates: (-4+5, -2) → ( 1, -2)

The total weight of 15
chairs is 45 pounds.
How many pounds
would 40 chairs weigh?

Answers

try 10 maybe because if there’s 45 it might be going up by 5 so if it’s 40 it would be 10

Someone help, 3x-5+23x-9

Answers

Answer:

26x - 14

Step-by-step explanation:

3x - 5 + 23x - 9

26x - 5 - 9

26x - 14

Answer:

26x - 14

Step-by-step explanation:

3x - 5 + 23x -9

3x +23x - 9 - 5

26x - 14

PLEASE HELP


Study the diagram of circle K, where JL and LM are tangent to circle K at points J and M, respectively. Also, JL=3x+10 and ML=7x−6.

What is the length of LM?


17.6

16

4

22

Answers

Answer:

LM = 22

Step-by-step explanation:

Tangents to a circle from an external point to the circle are congruent , that is

ML = JL , substitute values

7x - 6 = 3x + 10 ( subtract 3x from both sides )

4x - 6 = 10 ( add 6 to both sides )

4x = 16 ( divide both sides by 4 )

x = 4

Then

LM = 7x - 6 = 7(4) - 6 = 28 - 6 = 22

The cost of labor for servicing cars at B&B Automotive is $50 for each whole hour or for any fraction of an hour. There is a $25 additional charge to get the oil changed & fluid checked. What would be the cost of servicing a car that required 3.45 hours of labor if the owner requested that the oil be changed and the fluids be checked? a. $100 c. $225 b. $175 d. $250

Answers

Answer:

d. $250

Step-by-step explanation:

We can use the equation of a straight line to model the cost of servicing the car.

let the cost be y and the number of hours be x

and the charge per hour is m

y=mx+c

y=50x+25

given that the time is 3.45 hours it is assumed that the charge is for 4 hours since for a fraction of 0.45 hours we are charged $50

y=50(4)+25

y=200+25

y=$225

solve by substitution
y=-2x + 3
y=2x-1​

Answers

Answer:

Answer is in the picture bro.

Step-by-step explanation:

A car travels 60km/h and then a further 180km at 160km/h find the total time taken

Answers

Answer:

30

Step-by-step explanation:

Hi I am so not helpful do not use this answer

30 is your answer I’m pretty sure

Help please! Thank you!

Answers

The correct answer is 20, the other side went from 12-->48 meaning it was a x4 expansion, so the side that was 5 is now 20

Answer:

The answer would be x = 20. First, you must set up a proportion, since you know that the two polygons are similar: 12/48 • 5/x. Then, you have to do cross multiplication which would result in 12x = 240. Afterwards, you must divide both sides by 12, giving you x = 20.

Q1. Find the square root of the following by division method

i ) 9801

Answers

I'm not sure if this is how you want it to be done.

7. Find the value of x. Round to the nearest tenth of a unit. (2 points)
27°
work:
21
х
X =

Answers

Answer:

41.2

Step-by-step explanation:

By the alternate interior angles theorem, the angle of depression is congruent to the angle of elevation.

This means that tan(27)=21/x.

x(tan 27)=21

x=21/(tan 27), which is about 41.2

Kim and her mom have some items to donate to families in need for Christmas baskets. They have 100 rolls and 25 pumpkin pies. They want every basket to be exactly the same, and they don't want any leftover food. What is the largest number of baskets that they can make?

Answers

Answer:

There will be 25 baskets each container 4 rolls and 1 pumpkin

Step-by-step explanation:

Rolls = 100

Pumpkins = 25

To make every basket to be exactly the same number of rolls and pumpkins,

Find the highest common factor of 100 and 25

100 = 1, 2, 4, 5, 10, 25, 50, 100

25 = 1, 5, 25

The highest common factor of 100 and 25 is 25

Rolls = 100

= 100/25

= 4

Pumpkins = 25

= 25/25

= 1

Therefore,

There will be 25 baskets each container 4 rolls and 1 pumpkin


70% of the shoes in the UK are made abroad. if you survey 120 people about the shoes they are wearing, how many do we expect to have UK-made shoes?

Answers

Answer:

84

Step-by-step explanation:

70% of 120= 84

what is e( f + g) as a distributive property and in expanded form?

Answers

e(f + g) = ef + eg

This expression has distributive property shown above.
Distributive property = e(f+g)
= ef + eg

Expanded form = (e x f) + (e x g)

Someone please help me

Answers

Answer:

lemon pie is 7.5 and blueberry is 4.5

Step-by-step explanation:

Amanda has a bookcase with 30 books. There are 3 shelves in the bookcase. Each shelf has the same number of books. How many books does each shelf have?

Answers

Answer:10 books per shelf

Step-by-step explanation:

30 books

3 shelves

30x3=10

10 books per shelf

-3=2+a/11
pls pls pls help

Answers

Answer:

a=-55

Step-by-step explanation:

-3=2+a/11

-3=1/11 a+2 simplify

flip

1/11 a+2=−3

1/11 a+2−2=−3−2  subtract 2

1/11 a=−5

11*(1/11 a)=(11)*(−5) multpily both sides by 11

a=-55

Which is equivalent to represent by the table

Answers

Bar-charts are similar to tables and good for recording information and data sorry if it’s wrong i didn’t quite get what you meant hope this helped

A dessert has both fruit and yogurt inside.
Altogether, the mass of the dessert is 185g.
The ratio of the mass is 2:3.
What is the mass of the yoghurt?

Answers

Answer:

74g:148g

Step-by-step explanation:

If the yogurt portion is 3, then your answer is 148g.

You have a total of 5 portions (2+3=5). Since all portions must be equal, you can divide the total (185g) by 5. That means each portion is 37g each. To find the total weight of the yogurt, we multiply by the number of portions, either 2 or 3. That would be your result.

PLS HELP ME
Aisha divides 1/5 meter of ribbon into 2 equal pieces.

What is the length of each piece of ribbon?

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

⊆⊇ m
⊂⊃

Answers

Step-by-step explanation:

[tex] \frac{ \frac{1}{5} }{2} = \frac{ \frac{1}{5} }{ \frac{2}{1} } [/tex]

Multiply means by means and extremes by extremes to get;

[tex] \frac{1}{10} \: \: \: meters[/tex]

Let's divide

1/5÷21/5×1/21/5(2)1/100.1m

help would be greatly appreciated:)

Answers

Answer:

I have no idea

Step-by-step explanation:

Slope intercept form is defined as y=mx+b

Defining terms
Y is any y value on the the line
X is any x value in the line
M is the slope
B is the y intercept (0,b)

The problem is essentially asking you to find the value for b

To do this, we sub in the values we know

So, put the slope value in the formula

Y=(-1/4)x+b

From there, you can substitute the coordinate values provided and solve for b

-5=(-1/4)(-5)+b
-5=(5/4)+b
-6.25=b

So now we can rewrite the whole equation as

Y=(-1/4)x-6.25

Hope that helped!

Ian is trying to pick out an outfit for the first day of school. He can choose from 2 pairs of pants, 2 t-shirts, and 3 pairs of shoes. How many different outfits does Ian have to choose from?

Answers

Answer:

He has four outfits if he switches shirts once.

BRAINLIEST!!

please help!! i need this question/problem answered with a COMPLETE solution!!

giving brainliest to who answered completely!!

Answers

Answer:
perpendicular bisector: OP
drew it in the picture

Explanation:
perpendicular lines are lines that intersect at a right (90 degrees) angle.
so I drew the line segment AB with CD intersecting at point X at 4 cm from point A, OP intersecting at point Z at 5 cm, and LM intersecting at point Y at 7 cm.

perpendicular bisector is a line or a segment perpendicular to a segment that passes through the midpoint of the segment.
the midpoint of line AB is at 5 cm because the total length is 10 cm (it’s just the middle)
OP is the perpendicular bisector because it’s at the midpoint 5 cm

Which answer is the best estimate of the correlation coefficient for the variables in the scatter plot?

Answers

I think it’s A or c I don’t really know

The area of a rectangular door is given by the trinomial x2 – 14x + 45. The door's width is
(x - 9). What is the door's length?

Answers

Length = (x - 5)

Explanation:
Area
=
Width × Length

x
2

14
x
+
45
=
(
x

9
)
× Length

Length =
x
2

14
x
+
45
(
x

9
)


Length =
(
x

5
)
(
x

9
)
(
x

9
)


Length =
(
x

5
)
(
x

9
)
(
x

9
)


Length =
(
x

5
)

find x with reason(s)

Answers

Answer:

Well we know this is a parallelogram

-A theorem states that if both opposite side of a quadrilateral (4 sided shape) are congruent then it’s a parrlelogram.
-We also know this is a rhombus becuase all sides are congruent and has no right angle present. A theorem to support this is, If two consecutive sides of a parallelogram are congruent, then the parallelogram is a a rhombus.

So we’re trying to find x.

A theorem states that “The diagonals of a rhombus bisects two angles of the rhombus.”

Bisect means cut in a way that both angles are equal.

That means the two angles given have to be equal to each other.

We can make an equation.

110-x = x

Now solve
2x= 110

X= 55

X would equal 55

x=55


HELP QUICKLY!!
10+(28-8)/4

Answers

Answer:

15

Step-by-step explanation:

The order of operations is the key to solving this problem.

The PEMDAS acronym stands for:


Parenthesis

Exponents

Multiply

Divide

Add

Subtract

10+(28-8)÷4

First, solve parenthesis.

[tex]\sf{10+(28-8)\div4}[/tex]

[tex]\sf{28-8=20}[/tex]

Rewrite the problem down.

[tex]\sf{10+20\div4}[/tex]

Then, divide.

20/4=5

Rewrite the problem down.

10+5

Add.

[tex]\sf{10+5=\boxed{\sf{15}}[/tex]

So, the correct answer is 15.

I hope this helps you! Please let me know if my answer is incorrect.

Answer:

[tex]\displaystyle 15[/tex]

Step-by-step explanation:

[tex]\displaystyle Grouping\:Symbols \hookrightarrow G \\ Exponents, Indices, or\:Radicals \hookrightarrow E \\ Multiplication\:and/or\:Division \hookrightarrow M \\ Subtraction\:and/or\:Addition \hookrightarrow S \\ \\ 10 + (28 - 8) \div 4 \hookrightarrow 10 + 20 \div 4 \\ \\ \boxed{15} = 10 + 5[/tex]

By using GEMS, the result is fifteen.

I am joyous to assist you at any time.

Other Questions
Write3.12 x 10^8 inStandard notation. The area A of a square is given. Find its side length.Which side lengths are whole numbers?a) A = 36 cm b) A = 49 m2 c) A = 95 cm? d) A = 108 m2 HELLLLPPPPPPPPPPPPPPTanya performed an experiment in which she randomly pulled a marble from a bag, recorded its color, put it back, and then repeated. The following table represents the number of times each color of marble was pulled. Color of Marble Frequency Green 25 Blue 35 Purple 40 If Tanya repeats the experiment 50 more times, how many of those times should she expect to pull a purple marble?Enter your answer as a number, like this: 42 On a game show, contestants shoot a foam ball toward a target. The table includes points along one path the ball can take to hit the target where x is the time that has passed since the ball was launched and y is the height at this time. Time (x) Height (y) 0 10 2 24 16 10 How high was the ball after 8 seconds? 20 feet 42 feet 96 feet 106 feet. is an example of a nation that uses a democratic republic type ofgovernment.A. North KoreaB. FinlandC. Saudi ArabiaD. The United States use this to help u with the other questions ANSWER ASAP In less than a decade, the growing bicycle craze created one of the largest industries in the country. In 1885, the heyday of the ordinary, there were only six cycle manufacturers in the United States, with a total annual output of 11,000 bicycles. Five years later, with the safety now available, there were 17 manufacturers, and they produced 40,000 bicycles. In 1895, the New York Times reported the existence of 126 manufacturers with an expected annual output of "nearly half a million machines in this country alone." And annual production reached one million bicycles in 1896.Wheels of Change,Sue MacyWhat is Sue Macys purpose for this paragraph?What type of evidence does Sue Macy use to support her purpose?How does the evidence develop Macys purpose? cul es la intencin del autor al llamar Bartolo Gris a uno de los personajes del cuento la calle prohibida A new car lost 20% of its value the first year it was owned and lost another 15% the next year. If the car had an original value of 15,000, how much was the car worth after 3 years? round off 6406 to the nearest thousand Do not be late for the meeting tonight.indicativesubjunctiveimperative Match These Please... with the correct definition The perimeter of a rectangle is 11cm and the length is 3cm more than half the width. Find the dimensions of the rectangle 3 things to say when your girlfriend is sad? What advances in storytelling were demonstrated in The Great Train Robbery? Can someone help me with this? "The Mechanical Hound slept but did not sleep"VOund24.What figurative language is this a company that makes automatic coffee machines must make a model that dispenses 354 mL + .006 mL of coffee per cup. Do all of the cups in the table fall within the specified tolerance? After a firm has determined its position in the global market, it will typically seek to meet the needs of global markets by ______. please help this is the last question