Use the linear combination method to solve this system of equations. What is the value of x?


-2.4 x - 3.6 y = 1.2. 2.4 x + 1.2 y = 1.2.


-1

0

1

-4.8

Answers

Answer 1

Answer:

So your answer for X all of them equals 2


Related Questions

PLEASE HELP QUICK
Solve 3/10n - 3 1/5= -1 1/5.

n = 8
n = - 6/25
n = 6 2/3
n = -12 2/3

Answers

Answer:

It is 6 and 2/3

Step-by-step explanation:

Hope this helps

Answer:

6 2/3

Step-by-step explanation:

Credits to the person above :)

plz answer this i need it asap!!!!!!!!!

Answers

Answer:

its a luv

Step-by-step explanation:

Find the measure of each angle. NEED HELP ASAP

Answers

Answer:

a = 105 sorry thats all I know

HELP it’s easy please?

Answers

Answer:

Obtuse and acute

Step-by-step explanation:

hope this helped

Answer:

Step-by-step explanation:

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The difference btwn 2 villages is over 24km Write this as an algebraic statement

*HELP*​

Answers

Answer:

|x - y| > 24

Step-by-step explanation:

The difference btwn 2 villages is over 24km Write this as an algebraic statement

To solve :

Let us represent the two villages with an alphabet :

Let:

Village 1 = x

Village 2 = y

The difference between the two villages : |Village 1 - Village |, that is x - y

The difference is more than 24 km, that is > 24

Hence,

Algebraically,

|x - y| > 24

Brittany has a recipe which yields 25 hamburgers, but she only needs to make 10. If the original recipe calls for nine pounds of ground beef, how much
ground beef will she need to use?
A- 10 pounds
B- 7.5 pounds
C- 54 pounds
D- 3.6 pounds

Answers

The answer is b
Because it makes sense

A unit rate is about finding the quantity of one unit at a rate of one of another given unit.

3.6 pounds of ground beef is needed to make 10 hamburgers.

Option D is the correct answer.

What is a unit rate?

A unit rate is about finding the quantity of one unit at a rate of one of another given unit.

We have,

Recipe:

25 hamburgers = 9 pounds of ground beef.

Divide both sides by 25.

1 hamburger = 9/25 pounds of ground beef.

Now,

The number of pounds of ground beef to make 10 hamburgers:

1 hamburger = 9/25 pounds of ground beef

Multiply 10 on both sides.

10 hamburgers = 10 x 9/25 pounds of ground beef

10 hamburgers = 3.6 pounds of ground beef.

Thus,

3.6 pounds of ground beef is needed to make 10 hamburgers.

Learn more about unit rates here:

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What is the simplified form of
of (-7xº+5x²-x+6)-(-8x2 + x +3)?
ОА.
-x + 4x2 - x+3
OBX + 4x² - x+3
ocx - 4x² – 2-3
D. -15x + 6x? - X+9
Please I need help immediately

Answers

Note: Your answer choices remain a little unclear. But, I have solved the concept and solution, so you can easily figure it out.

Answer:

[tex]\left(-7x^0+5x^2-x+6\right)-\left(-8x^2+x+3\right)=13x^2-2x-4[/tex]

Step-by-step explanation:

Given the expression

[tex]\left(-7x^0+5x^2-x+6\right)-\left(-8x^2+x+3\right)[/tex]

solving the expression

[tex]=-7x^0+5x^2-x+6-\left(-8x^2+x+3\right)[/tex]

apply the rule: [tex]a^0=1,\:a\ne \:0[/tex]

[tex]=-7+5x^2-x+6-\left(-8x^2+x+3\right)[/tex]

[tex]=-7+5x^2-x+6+8x^2-x-3[/tex]

simplify

[tex]=13x^2-2x-4[/tex]

Therefore, the simplified form is:

[tex]\left(-7x^0+5x^2-x+6\right)-\left(-8x^2+x+3\right)=13x^2-2x-4[/tex]

Note: Your answer choices remain a little unclear. But, I have solved the concept and solution, so you can easily figure it out.

I used 15 out of the 48 rolls of toilet paper that I bought. What percent did I use so
far? Round to the nearest tenths place and include the percent sign.

Answers

Answer:

Step-by-step explanation:

15 rolls................................? %

48 rolls................................100%

(15*100)/48=31.25% used

round to the nearest tenth is 31.30%

Kaitlin makes $13.15 per hour. If she works more than 40 hours in a week, she gets paid time and a half. Kaitlin gets a paycheck every two weeks. On her recent paycheck, she made $1209.84. How many overtime hours did Kaitlin work? Hint: For a two week pay period, 80 hours is considered regular pay.

Answers

Answer: 8 hours

Step-by-step explanation:

The pay is for 2 weeks which means that she worked for 80 hours.

At 80 hours, the regular income she should make is:

= 80 * 13.15

= $1,052

The total she made from overtime is therefore:

= 1,209.84 - 1,052

= $157.84

When she works overtime, she gets paid at a rate of a time and half. This means she gets:

= 13.15 * 1.5

= $19.73

The hours of overtime she worked is therefore:

= 157.84/19.73

= 8 hours

if 3(x-1) -5(x-4)=8 find the value of x-5 whole 1/2​

Answers

Step-by-step explanation:

3(x-1) -5(x-4) = 8

3x-3 -5x+20 = 8

3x -5x -3 +20 = 8

-2x + 17 = 8

17 -8 = 2x

9 = 2x

2x = 9

x = 9/2

Answer:

3(x-1)-5(x-4)=8

We move all terms to the left:

3(x-1)-5(x-4)-(8)=0

We multiply parentheses

3x-5x-3+20-8=0

We add all the numbers together, and all the variables

-2x+9=0

We move all terms containing x to the left, all other terms to the right

-2x=-9

x=-9/-2

x=4+1/2

Can someone please help me. I am struggling with this question.

Answers

Answer:

d i think help someone confirm it

Step-by-step explanation:

1.What is the value of log3 729?

Answers

I believe the value of log3 729 is 6

Answer:

6

Step-by-step explanation:

Rewrite -  log 3  ( 729 )  =  x   in exponential form using the definition of a logarithm. If  x and b are positive and real numbers and b does not equal 1, then  log b  ( x )  =  y  is equivalent to   b^{y}    = x  .

3  x  =  729

Create equivalent expressions in the equation that all have equal bases.

3^{x} = {3^6}

Since the bases are the same, the two expressions are only equal if the exponents are also equal.

x  =  6

The variable x  is equal to  6

Higher Order Thinking Mr. Wing's class collected some cans to recycle on Tuesday. They collected 18 more cans on Wednesday. The class collected 44 cans in all. How many cans did the class collect on Tuesday?​

Answers

Answer:

26

Step-by-step explanation:

they collected 26 cans on Tuesday

Step-by-step explanation:

just subtract the amount on Wednesday to the total of 44 and it gives you the number before it was added all together which is 26

Number 11. I need help ??

Answers

Answer: answering in simplest radical form, x = 3 ± √3

help please? i don't know what to do if the base is X

Answers

Answer:

area = x^2 - 4x

Step-by-step explanation:

a = x(x-4)

a = x^2 - 4x (x times x is x^2, x times -4 is -4x)

A baker needs 8 1/2 cups of flour for a sheet cake recipe. He has 4 2/3 cups of flour in a canister and buys 5 1/4 cups more.

How much flour does he have left after he makes the sheet cake?

Enter your answer as a mixed number in simplest form.
I dont know if i asked this question already but, I cant find it, but i need help now!

Answers

Answer: 1 5/12 cups of flour leftover

Step-by-step explanation: First, add 4 2/3 + 5 1/4. This gives you 9 11/12. 9 11/12 - 8 1/2 = 1 5/12.

The baker has [tex]1\frac{5}{12}[/tex] cups of flour left after making the sheet cake.

What is Fraction?

A fraction represents a part of a whole.

Given that  baker needs [tex]8\frac{1}{2}[/tex] cups of flour for a sheet cake recipe.

Baker has  [tex]4\frac{2}{3}[/tex] cups of flour in a canister and buys [tex]5\frac{1}{4}[/tex] cups more.

The flour he has in total =  [tex]4\frac{2}{3}[/tex] +  [tex]5\frac{1}{4}[/tex]

=14/3 +21/4

=56+63/12

=119/12

To find how much flour the baker has left after making the sheet cake, we can subtract the amount needed from the total amount:

119/12 - 17/2 = (119 - 102) / 12 = 17/12

Therefore, the baker has [tex]1\frac{5}{12}[/tex] cups of flour left after making the sheet cake.

To learn more on Fractions click:

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(x^3- 5x² – 33x – 35) /(x+3)

Answers

Answer:

x^2-8x-9-8/x+3

Step-by-step explanation:

Look at this graph:

What is the slope?

Simplify your answer and write it as a proper fraction, improper fraction, or integer.

Answers

Answer: 1/2

Step-by-step explanation: u go up one and then go to the right two times

Slope is 1/2 go up one, two to the right

у = -3х2 – 12х – 8
Help!!

Answers

Answer:

y= -12x-14

or if it was x, x=-4/12-7/6

45 PTS!!! please help! Place the correct inequality interval in the appropriate blank. All intervals are listed with the variable (x) regardless of the variable in the problem. There is one answer for each question.

Answers

Answer:

See attached

Step-by-step explanation:

The answer is attached, refer to picture below

-12a + 13b - 32
please help me

Answers

Answer: 12a+ 13b

Step-by-step explanation:

Answer:

12a+13b

Step-by-step explanation:

The expression cannot be further simplified as there are no like terms.

Which of the following does not have a measure of 40 degrees? ∠AOX ∠DOA ∠COA

Answers

am pretty sure it DOA

1. In Line AC, B is the midpoint between Point A and Point C. If AB = 4x + 5 and BC = 3x +12, what is x?

Answers

The correct answer is X equals 7


6. You have 324 coins and divide them into two piles, in the ratio of 1:2. The smaller of the two piles is then divided into two additional piles which are in the ratio of 3:1. How many coins are in the smallest of the piles?
A 27 B 54 C 81 D 108 E 216

Answers

Answer:

Your answer is B or 54.

Step-by-step explanation:

Answer:

the answer is 54

Step-by-step explanation:

if you have a ratio of 1:2 you divide 324 by three

108     and      216

if you take 108 and divide it again into two more piles you get 54  

Work out the volume of this hemisphere?

Answers

Step-by-step explanation:

[tex]the \: volume \: of \: hemisphere = \frac{2}{3} \pi {r}^{3} \\ v = \frac{2}{3} \pi {18}^{3} = 12214.5122 \\ = 12214.5 \: {cm}^{3} [/tex]

Answer:

1072.3

Step-by-step explanation:

Which expression is 3 times 10 to the power of 7 times as great as 2 times 10 to the power of -4

Answers

Answer:

6 times 10 to the 3rd power or 6 • 10^3

Step-by-step explanation:

On this problem, you are multiplying numbers that are in scientific notation.

3 • 10^7 multiplied by 2 • 10^-4.

To do it, you multiply the first part of each number (the mantissas) and you multiply the powers of ten part (the ordinates) of the two.

So.... 3 times 2 is....

right... 6

Then...

10 to the seventh power    times    10 to the -4 power...

When you multiply the same base, you add the exponents...

So it is 10 to the "seven plus negative four" power.

That is 10 to the 3rd power.

So the final answer is

6 times 10 to the 3rd power.

Or

6 • 10^3

6 × 10³ is the multiplication of 3 × 10⁷ and 2 × 10⁻⁴.

What is the law of indices?

Index (indices) in Maths is the power or exponent which is raised to a number or a variable.

For example, 5³ = 5²5 here we break 5³ into 5² and 5, so it is called the law of indices.

Given that 3x10⁷ times as great as 2x10⁻⁴

Let x is 3 × 10⁷ times as great as 2 × 10⁻⁴.

Then,

x = (3 × 10⁷) × (2 × 10⁻⁴)

x = (3 × 2) × (10⁷ × 10⁻⁴)

x = 6 × 10⁷⁻⁴

x = 6  × 10³

Hence, "6 × 10³ is the multiplication of 3 × 10⁷ and 2 × 10⁻⁴".

To learn more about indices,

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6 builders can build 10 houses. How many number of houses can 18 builders build?

Answers

Answer:6 x 30 =18 x ex

180= 18 ex

ex =180/18

number of days = 10

Step-by-step explanation:


Apply the distributive property using the greatest common factor to write an equivalent expression.
Enter your answers in the boxes.
0.3x – 2.7 =T0-0)

Answers

Step-by-step explanation:

0.3x = (0.3)(x).

2.7 = (0.3)(9).

Between the 2 terms, the GCF is 0.3.

Hence,

0.3x - 2.7

= (0.3)(x) - (0.3)(9)

= 0.3(x - 9).

What’s the answer? It’s my last ?

Answers

Answer:

B

Step-by-step explanation:

it should be 120 degrees

What is the EP unit cost of bell pepper if the AP unit cost is 1.10 per pound and the yield percent is 85%?

Answers

Answer:

1.30

Step-by-step explanation:

The formula for EP cost is given as:

EP cost = AP cost / yield

From the Question,

AP unit cost = 1.10 per pound

The yield percent = 85%

EP cost = 1.10/85%

EP cost = 1.2941176471

Approximately

The EP unit cost of bell pepper = 1.30

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