3 years ago

Solve this system of linear equations. separate the x- and y- values with a coma.

1 answer:

3 0

The solution is (2, -4).

We can solve this with the elimination method. Multiply the first equation by -2 and then add the two equations.

-20x + -12y = 8
20x + 10y = 0 Add the two equations

-2y = 8
y = -4

Now, just input -4 for y into either equation, you will get 2 for x.

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If a rectangular plot measures 33 feet by 44 feet, what is

andriy [413]

Answer:

55 feet

Step-by-step explanation:

If you draw it out, the diagnonal along wiht 2 sides of the rectangle make a rigth angles traingle.

Using pythagoras theoreom, $c^{2} =a^{2} +b^{2}$ , c is the length of the diagonal and a and b are 2 sides of rectangle.

So c= $\sqrt{a^{2} +b^{2} }$

= $\sqrt{33^{2} +44^{2} }$

put in alculator and get:

=55 feet

8 0

3 years ago

Nina can braid 48 inches of rope in 1 hour. what is her speed in feet per hour?

mr Goodwill [35]

There are 4 feet in 48 inches, so your answer should just be 4 feet per hour.

3 0

3 years ago

What is the product of 3x(x2 + 4)? O x² + 3x +4 O 3x3 + 4 O 3x3 + 12x 3x² + 12x

Svetradugi [14.3K]

Answer:

3x³ + 12x

Step-by-step explanation:

Given

3x(x² + 4) ← multiply each term in the parenthesis by 3x

= 3x³ + 12x

6 0

4 years ago

12 is 24% of what number

alexgriva [62]

The answer is 200
explanation:

6 0

3 years ago

Help pls ! i’ll mark brainliest to whoever answers it right first. thanks !

Bess [88]

About 90ft

step-by-step explanation: 1/2 (a+b) x h is area of trapezoid. So that would be 40
then area of circle is pi x radius squared. So that is 50.24 roughly.

so 50+40=90

and yeah

hope this helped :))

7 0

3 years ago