Which of the following is quadratic equation?

xenn [34]

Answer:

Step-by-step explanation:

$-\dfrac{3n}{5}=-15\qquad\text{multiply both sides by (-5)}\\\\(-5\!\!\!\!\diagup^1)\left(-\dfrac{3n}{5\!\!\!\!\diagup_1}\right)=(-5)(-15)\\\\3n=75\qquad\text{divide both sides by 3}\\\\n=25$

5 0

3 years ago

Is this true? also will give brainliest

Alona [7]

The answer is true. The image shows an adjacent supplementary angle.
8x+140=180
8x=40
x=5

3 0

3 years ago

The quotient of m and 7

Serga [27]

Answer:

m divided by 7

5 0

4 years ago

How is 9/5 expressed as the sum of a whole number and fraction

MAXImum [283]

To do this, divide 9 by 5. it is one, with a remainder of 4. so the 4 goes over 5 as a fraction. the answer is then 1 4/5

3 0

3 years ago

What is the area of the figure below??? Giving first answer brainliest as long as they have an explanation! Worth 10pts!!

ANTONII [103]

<h3>Answer:</h3>

28inch^2

<h3>Step-by-step solution:</h3>

Rectangle:

[Length x Breadth]

5 + 3 = 8inch

8 x 2.5 = 20inch^2

Right Triangle:

[1/2 x Base x Height]

1/2 x 5 x 2 = 1/2 x 10

= 5inch^2

Left Triangle:

[1/2 x Base x Height]

1/2 x 3 x 2 = 1/2 x 6

= 3inch^2

20 + 5 + 3 = 28inch^2

3 0

3 years ago