All categories

3 years ago

How would you describe your understanding of two- and three dimensional figures

Mathematics

1 answer:

nordsb [41]3 years ago

4 0

2 dimensional is flat three dimensional isnt flat

You might be interested in

In order to solve the following system of equations by addition, which of the

Pavlova-9 [17]

Answer:

Multiply the top equation by -3 and the bottom equation by 2

Step-by-step explanation:

Given system of equations:

$\begin{cases}4x-2y=7\\3x-3y=15 \end{cases}$

To solve the given system of equations by addition, make one of the variables in both equations sum to zero. To do this, the chosen variable must have the same coefficient, but it should be negative in one equation and positive in the other, so that when the two equations are added together, the variable is eliminated.

To eliminate the variable y:

Multiply the top equation by -3 to make the coefficient of the y variable 6:

$\implies -3(4x-2y=7) \implies -12x+6y=-21$

Multiply the bottom equation by 2 to make the coefficient of the y variable -6:

$\implies 2(3x-3y=15) \implies 6x-6y=30$

Add the two equations together to eliminate y:

$\begin{array}{l r r}& -12x+6y= &-21\\+ & 6x-6y= & 30\\\cline{1-3}& -6x\phantom{))))))} = & 9\end{array}$

Solve for x:

$\implies -6x=9$

$\implies x=-\dfrac{9}{6}=-\dfrac{3}{2}$

Substitute the found value of x into one of the equations and solve for y:

$\implies 3\left(-\dfrac{3}{2}\right)-3y=15$

$\implies -\dfrac{9}{2}-3y=15$

$\implies -3y=\dfrac{39}{2}$

$\implies y=-\dfrac{39}{2 \cdot 3}$

$\implies y=-\dfrac{13}{2}$

Learn more about systems of equations here:

brainly.com/question/27868564

brainly.com/question/27520807

3 0

1 year ago

Read 2 more answers

Find the value of x.

allochka39001 [22]

In order to find the value of x, you have to cross multiply both equations. 4x-10 is basically 4 times something subtract 10. Same thing as well for 3x-2. Now it says to find the value of x. X has to also be the same answer for both equation as well. By the way x doesn't have a given number so there is no specific answer.

3 0

3 years ago

2. What is the slope of the line that passes through the points M(-5,0) and N (6,8)?

Oxana [17]

Answer:

Hi how are you doing today Jasmine

6 0

2 years ago

How to draw and share 8 students share 5 Square pieces of cake equally

gayaneshka [121]

40 square pieces of cake equally of the 8 studentd

8 0

2 years ago

Nathan is buying a cell phone for his business. The regular price for the cell phone is $179. If he buys the phone in the next 2

stira [4]

He will spend 143.20 dollars

5 0

3 years ago