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s344n2d4d5 [400]

4 years ago

11

At a bake sale there were 72 raisin cookies sold. if the ratio of raisin cookies sold to oatmeal cookies sold was 9:1, what is t

he combined amount of raisin and oatmeal cookies sold?

1 answer:

konstantin123 [22]4 years ago

6 0

Answer:

Step-by-step explanation:

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What is the solution to the systen of equations y=1/2x+2 and y=-2x-3

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For this case we must solve a system of two equations with two unknowns, given by "x" and "y".

We have:

$y = \frac {1} {2} x + 2 (1)\\y = -2x-3 (2)$

We multiply (2) by -1:

$-y = 2x + 3 (3)$

We add (1) and (3):

$y-y = \frac {1} {2} x + 2x + 2 + 3\\0 = \frac {5} {2} x + 5\\-5 = \frac {5} {2} x$

Clearing x:

$-10 = 5x\\x = \frac {-10} {5}\\x = -2$

We substitute $x = -2$ in (2)

$y = -2 (-2) -3\\y = 4-3\\y = 1$

Thus, the solution of the system is $(x, y) = (- 2,1)$

Answer:

the solution of the system is $(x, y) = (- 2,1)$

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3 years ago

5) A cube has height of 3 cm. What is the volume of the cube?

ElenaW [278]

Answer:

V =27cm^3

Step-by-step explanation:

The volume of a cube is given by

V = s^3 where s is the side length

V = 3^3

V = 3^3

V =27cm^3

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Answer: C

Step-by-step explanation:

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en la librería habían 680 libros para el comienzo de clase pidieron a la editorial 125 más Cuántos libros hay ahora en total par

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A local club had a fundraiser to raise money for 15 different programs. They

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Step-by-step explanation:

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