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3 years ago

I need help with geometry on finding the area of the triangle or trapezoid with these three problems

Mathematics

1 answer:

rjkz [21]3 years ago

7 0

Answer:

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Determine the solution of the system. Show your work. Y = 5x – 9 Y = 2x + 6

snow_tiger [21]

Both define y, so they are equivalent.

5x-9=2x+6
3x-9=6
3x=15
x=5

Then plug in x into any of the equations
y=2(5)+6
y=10+6
y=16

Final answer: (5,16)

5 0

3 years ago

Read 2 more answers

Josh wants to buy enough fruit punch for each guest at his birthday party to

Nikolay [14]

Answer:

C. 9

Step-by-step explanation:

He is going to have 12 people including himself, and each is going to have 750 mL

12*750

9000 mL

There are 1000 mL in each liter, so divide 9000 by 1000

9000/1000=9

So he needs to buy 9, 1 liter containers of fruit punch

Hope this helps :)

6 0

4 years ago

Read 2 more answers

Find the missing term of the following sequence.

lakkis [162]

A because when you add 34 + 155 you get 189.5 then if you add 155 to that you get 345.

7 0

3 years ago

un refresco tiene una concentración de 3.8 x 10-4 de iones H+. determina el valor de PH de ese refresco

kifflom [539]

Answer:

El pH del refresco es 3.42.

Step-by-step explanation:

Se puede calcular el pH del refresco usando la siguiente fórmula:

$pH = -log([H^{+}])$

En donde:

[H⁺]: es la cocentración de los iones H⁺ de la solución

Entonces, el pH es:

$pH = -log([H^{+}]) = -log(3.8\cdot 10^{-4}) = 3.42$

El resutlado obtenido nos permite concluir que ese refresco es ácido.

Por lo tanto, el pH del refresco es 3.42.

Espero que te sea de utilidad!

4 0

3 years ago

Use the change of variables s=x+3y, t=y to find the area of the ellipse x2+6xy+10y2≤1.

MArishka [77]

$t=y\implies s=x+3t\implies x=s-3t$

Then

$x^2+6xy+10y^2=(s-3t)^2+6(s-3t)t+10t^2=s^2+t^2\le1$

which is a disk of radius 1, hence with area $\pi$ .

5 0

3 years ago