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3 years ago

I need help getting started

Mathematics

2 answers:

swat323 years ago

6 0

The answer the to the question would be 18.00

zmey [24]3 years ago

4 0

The answer is

   15.39
- 12.78
------------
   2.61

15.39
+ 2.61
----------
   18.00

The answer is 18.00. That is what I think. I am pretty sure it is correct.

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If O N = 8 x − 8 , L M = 7 x + 4 , N M = x − 5 , and O L = 3 y − 6 , find the values of x and y for which LMNO must be a paralle

posledela

Answer:

$x=12\\y=\frac{13}{3}$

Step-by-step explanation:

For it to be a parallelogram, opposite sides have to be of same length.

OL = NM, and
ON = LM

Using the expressions given, we can make 2 equations:

Equation 1:

$OL=NM\\3y-6=x-5\\-x+3y=1$

Equation 2:

$ON=LM\\8x-8=7x+4\\$

Solving equation 2, we have x:

$8x-8=7x+4\\8x-7x=4+8\\x=12$

Plugging this value of x into equation 1, we can solve for y:

$-x+3y=1\\-(12)+3y=1\\-12+3y=1\\3y=13\\y=\frac{13}{3}$

So,

$x=12\\y=\frac{13}{3}$

7 0

3 years ago

Please help me. It's urgent

siniylev [52]

Answer:

a) 7/5

Step-by-step explanation:

$y-\frac{y-1}{2}=1-\frac{y-2}{3} \\Through\ the\ butterfly\ method\ of\ resolving\ denominators\ ,\\\frac{2y-(y-1)}{2} = \frac{3-(y-2)}{3} \\\frac{2y-y+1}{2} = \frac{3-y+2}{3} \\\frac{y+1}{2} =\frac{5-y}{3} \\3(y+1)=2(5-y)\\3y+3=10-2y\\3y+2y=10-3\\5y=7\\y=\frac{7}{5}$

5 0

3 years ago

Multiply and solve for x: x(x + 12) – 8x = 14 + x(x – 4)

erik [133]

Using the distribution method:

x^2 + 12x - 8x = 14 + x^2 - 4x

x^2 + 4x = x^2 - 4x + 14

Now, I'm isolating x by moving all the x's onto one side of the equation:

x^2 - x^2 + 4x + 4x = 14

Combine like terms (x^2 cancels out):

8x = 14

x = 14/8

Simplified: x = 7/4

6 0

3 years ago

Simplify (12x^3-8x^2)-(3x^3+9x^2+x-7)

Taya2010 [7]

Answer: 9x3-17x2-x+7

7 0

2 years ago

What is the volume of a square pyramid with a base area of 36 and a height of 9 cm?

Dmitrij [34]

Answer:

108cm

Step-by-step explanation: