Will some one help me please will friend

Answers

Answer 1

Answer: Add the equations,just the way they appear there.

-- Add the top 'x' to the bottom 'x'. Write the sum under the 'x's.
-- Add the '+y' and the '-y'. Write the sum under the 'y's.
-- Add the '2' and the '4'. Write the sum under them, with n " = " sign
before it.

You should now have an equation with only 'x' in it and no 'y'.
You can easily solve that one and find out the value of 'x'.

Once you know the value of 'x', go back to either one of the original
equations, and plug the number-value of 'x' in place of 'x'.

You'll then have an equation with only 'y' in it and no 'x'.
You can easily solve that one and find out the value of 'y'.

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How do you do this, can someone help please?

Write 120% as a fraction.

Answers

6/5 because each 1 equals 20%. so 1/5=20%, 2/5=40%, 3/5=60% and so 5/5=100% so 6/5=120%. hopefully that helps.

120% as a fraction in simplest form is 6/5.

What is a fraction?

In Mathematics and Geometry, a fraction simply refers to a numerical quantity (numeral) which is not expressed as a whole number. This ultimately implies that, a fraction is simply a part of a whole number.

In this exercise and scenario, we would convert the given percentage 120% into a fraction by dividing as follows;

120% = 120/100

By dividing both the numerator and denominator by 20, we have:

Fraction: 120/100 = 6/5.

Read more on fraction here: brainly.com/question/29367657

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What is the square root of 864

Answers

There are two ways to evaluate the square root of 864: using a calculator, and simplifying the root.

The first method is simplifying the root. While this doesn't give you an exact value, it reduces the number inside the root.

Find the prime factorization of 864:

$√(864) = √(2 \cdot 2 \cdot 2 \cdot 2 \cdot 2 \cdot 3 \cdot 3 \cdot 3)$

Take any number that is repeated twice in the square root, and move it outside of the root:

$√(864) = √((2 \cdot 2) \cdot (2 \cdot 2) \cdot 2 \cdot (3 \cdot 3) \cdot 3)$

$√(2 \cdot 2) = √(4) = 2$

$√(3 \cdot 3) = √(9) = 3$

$√((2 \cdot 2) \cdot (2 \cdot 2) \cdot 2 \cdot (3 \cdot 3) \cdot 3) = √((4) \cdot (4) \cdot 2 \cdot (9) \cdot 3)$

$√((4) \cdot (4) \cdot 2 \cdot (9) \cdot 3) = (2 \cdot 2 \cdot 3) √(2 \cdot 3) = \boxed{12 √(6)}$

The simplified form of √864 will be 12√6.

The second method is evaluating the root. Using a calculator, we can find the exact value of √864.

Plugged into a calculator and rounded to the nearest hundredths value, √864 is equal to 29.39. Because square roots can be negative or positive when evaluated, this means that √864 is equal to ±29.39.

Here goes problem 4 i need help

Answers

The only tricky thing about this problem is that you have to know
the formula for the area of a triangle. The formula is

   Area of a triangle = (1/2) times (length of the base) times (the height) .

In this picture, 'x' is the base, and 'h' is the height. That's all you need
in order to find the area. You don't need to know 'y' or 'z' at all.

   Area = (1/2) x (base) x (height)

   = (1/2) x (13) x (6)

   = (1/2) x ( 78 ) = 39 inches²

multiply 13*6=78 then multiply with .5 (78*.5=39)

HELP PLEASEDory and Nemo go to Taco Bell for lunch. Dory orders three soft tacos and three double deckers for $11.25. Nemo pays $10.00 for four soft tacos and two Double Deckers. Write a system of equations that represents the lunch orders for Dory and Nemo. Use x to represent soft tacos and y to represent Double Deckers.

Answers

x = soft tacos
y = double deckers

Dory:
3x + 3y = 11.25

Nemo:
4x + 2y = 10.00

---Now to solve for x and y---
---We find LCM of either x or y then make them cancel each other---
Dory multiply by 2:
6x + 6y = 22.50

Nemo multiply by 3:
12x + 6y = 30.00

--eliminate y---
Nemo subtract Dory:
6x = 7.50
Therefore x = 7.50 ÷ 6 = 1.25
---Now substitute x = 1.25 in either equation.---

Dory:
3.75 + 3y = 11.25
Therefore 3y = 11.25 - 3.75
therefore 3y = 7.50
there fore y = 2.50

y = 2.50 , x = 1.25

Sorry, that this is so long, I hope you understand. This is called simultaneous equations, you can read up on it.

Answer:

Dory: 3x+3y=11.25

Nemo: 4x+2y=10.00

Step-by-step explanation:

Have a good day :)

Liam had $250. Then, he and his classmates bought a present for their teacher, evenly splitting the $120 among the e of them. How much money does Liam have left? Write your answer as an expression.

Answers

Answer:

$250-(120)/(e)$

Step-by-step explanation:

We have been given that Liam and his classmates bought a present for their teacher, evenly splitting the $120 among the 'e' of them.

This means that number of all students is 'e'. To find the cost of present for each student, we will divide 120 by e.

$\text{Cost of present for each student}=(120)/(e)$

Since Liam had $250, so we need to subtract $(120)/(e)$ from 250 to get amount Liam has left:

$\text{Amount Liam has left}=250-(120)/(e)$

Therefore, our required expression would be $250-(120)/(e)$ .

Liam Splits $40 With The 3 Of Them Out Of $120 And Liam Has 130 Because 250-120=130

WILL MARK BRAINLIEST!The multipliers of this system of equations have been determined to create opposite terms of the y-variable.

4 (one-fourth x minus three-fourths y = 34) right-arrow x minus 3 y = 136
24 (three-fourths x + one-eighth y = negative 12) right-arrow 18 x + 3 y = negative 288

Answers

Answer:

thus, x=-34 and y=170/-3

Step-by-step explanation:

4((1/4)*x-(3/4)*y)=34

x-3y=136

24((3/4)*x+(1/8)*y)=12

18x+3y=-288

4x-3y=34⇒x-3y=136

18x+3y=12⇒18x+3y=-288

lets solve 4x-3y=34⇒x-3y=136 first:

4x-3y=34

x-3y=136

4x-3y=34

-x+3y=-136

3x=-102

x=-102/3

x=-34

lets plug in x to one of the equations, since both equations are equal to each other:

4x-3y=34

4(-34)-3y=34

-136-3y=34

-3y=170

y=170/-3

now lets solve: 18x+3y=12⇒18x+3y=-288

18x+3y=12

18x+3y=-288

18x+3y=12

-18x-3y=288

0 $\neq$ 300

so, this system doesn't work

thus, x=-34 and y=170/-3

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PLEASE HELP WILL MARK BRAINLIEST

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The base area of a prism is 120 square feet. Its height is 5 feet. What is the volume of the prism?A. 3000 ft B. 125 ft C. 600 ft D. 200 ft