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3 years ago

Is painting a wall a perimeter or a area

Mathematics

1 answer:

miskamm [114]3 years ago

8 0

Answer:

Area. Perimeter would be every room you'd paint.

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30, ______, 19, 13 1/2 find the missing number

Anika [276]

It's decreasing by 5 1/2 each time, so:
<u><em>24 1/2, or 24.5</em></u>

4 0

3 years ago

4. What error was made in the mapping of these arderet pairs2

xenn [34]

Answer:

znjdjshdnsh zjsnzne sxn zjsmma

4 0

3 years ago

2. Using Vièta's theorem, find the solutions to the equation. a) x^2 - 3x + 2 = 0 b) x^2 + 2x - 15 = 0.

olga_2 [115]

Given:

$\begin{gathered} x^2-3x+2=0 \\ x^2+2x-15=0 \end{gathered}$

Required:

We need to find the solution by Vièta's theorem.

Explanation:

Compare 1st equation with

$ax^2+bx+c=0$

we get

$\begin{gathered} a=1 \\ b=-3 \\ c=2 \end{gathered}$

Vièta's theorem is

$\begin{gathered} x_1+x_2=-\frac{b}{a} \\ x_1x_2=\frac{c}{a} \end{gathered}$

$\begin{gathered} x_1+x_2=3 \\ x_1x_2=2 \end{gathered}$

now solve this equation and we get

$\begin{gathered} x_1=1 \\ x_2=2 \end{gathered}$

because addition of 1 and 2 is 3 and multiplication is 2

Now for 2nd equation

$\begin{gathered} a=1 \\ b=2 \\ c=-15 \end{gathered}$

apply Vièta's theorem

$\begin{gathered} x_1+x_2=-2 \\ x_1x_2=-15 \end{gathered}$

by this

$\begin{gathered} x_1=3 \\ x_2=-5 \end{gathered}$

because addition of 3 and -5 is -2 and multiplication is -15

8 0

1 year ago

What is 285.39154 rounded by the whole number?

Anton [14]

285 since the tenth place is a 3

7 0

3 years ago

What is the length of the line segment with endpoints (11,−4) and (−12,−4) ?

Step2247 [10]

Length = √(y2-y1)² + (x2-x1)²
l = √(-4+4)² + (11+12)²
l = √23²
l = 23

In short, Your Answer would be 23 units

Hope this helps!

3 0

4 years ago