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2 years ago

La Base de un triangulo mide 28 cm y su altura es correspondiente, 3/7 cm de la base. calculen el area del triangulo

Mathematics

1 answer:

nikklg [1K]2 years ago

5 0

Answer:

168 cm²

Step-by-step explanation:

altura = 3/7 × 28 = 12 cm

area = ½×28×12 = 168 cm²

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If M is the midpoint of XY, find the coordinates of X if M(-3,-1) and Y(-8,6)

vova2212 [387]

$\bf \textit{middle point of 2 points }\\ \quad \\
\begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
% (a,b)
X&({{ a}}\quad ,&{{ b}})\quad 
% (c,d)
Y&({{ -8}}\quad ,&{{ 6}})
\end{array}\qquad
% coordinates of midpoint 
\left(\cfrac{{{ x_2}} + {{ x_1}}}{2}\quad ,\quad \cfrac{{{ y_2}} + {{ y_1}}}{2} \right)$

$\bf \left( \cfrac{-8+a}{2}~,~\cfrac{6+b}{2} \right)=\stackrel{M}{(-3,-1)}\implies 
\begin{cases}
\cfrac{-8+a}{2}=-3\\\\
-8+a=-6\\
\boxed{a=2}\\
----------\\
\cfrac{6+b}{2}=-1\\\\
6+b=-2\\
\boxed{b=-8}
\end{cases}$

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3 years ago

Multiple {5 0 3-5}×[2-1 2-2]

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Do you by any chance have a photo of the problem?

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3 years ago

Tickets cost $6.50 for students and $9.25 for adults. If sales total $2968.75. How many tickets were sold?

hjlf

There were 188,49 tickets that were sold

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3 years ago

The question states: <br> Factor. <br><br> 9v+18.

Evgen [1.6K]

9(v+2)
When you factor you are essentially dividing by 9 when you take it out and add parenthesis

4 0

3 years ago

Read 2 more answers

Solve the equation - <img src="https://tex.z-dn.net/?f=%5Cfrac%7Bw%7D%7B5%7D" id="TexFormula1" title="\frac{w}{5}" alt="\frac{w}

Tatiana [17]

Answer:

w = -20

Step-by-step explanation:

- $\frac{w}{5}$ + 9 = 13

Shift the (+9) to the other side of the equation. (+9) will turn into (-9).

- $\frac{w}{5}$ = 13 - 9

= 4

Shift the (÷5) to the other side of the equation. (÷5) will turn into (×5).

-w = 4 × 5

= 20

Multiply both sides of the equation by (-1) so that -w will turn into w.

w = (-1) × 20

w = -20

5 0

3 years ago